CELEX: 51986PC0273
Language: en
Date: 1986-06-19
Title: PROPOSAL FOR A COUNCIL DIRECTIVE ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO THE MEASURES TO BE TAKEN AGAINST THE EMISSION OF GASEOUS POLLUTANTS FROM DIESEL ENGINES FOR USE IN VEHICLES

31.7.86                                    Official Journal of the European Communities                              No C 193/3
                                                                   II
                                                           (Preparatory Acts)
                                                     COMMISSION
               Proposal for a Council Directive on the approximation of the laws of the Member States
               relating to the measures to be taken against the emission of gaseous pollutants from diesel
                                                       engines for use in vehicles
                                                          COM(86) 273 final
                                   (Submitted by the Commission to the Council on 23 June 1986)
                                                            (86/C 193/03)
THE COUNCIL OF THE EUROPEAN COMMUNITIES,                                Whereas it is desirable to follow the technical
                                                                        requirements adopted by the United Nations Economic
                                                                        Commission for Europe (ECE) in its Regulation No 49
 Having regard to the Treaty establishing the European                  (Uniform provisions concerning the approval of diesel
 Economic Community, and in particular Article 100                      engines with regard to the emission of gaseous
thereof,                                                                pollutants), which is annexed to the Agreement of 20
                                                                        March 1958 concerning the adoption of uniform
                                                                        conditions of approval and reciprocal recognition of
Having regard to the proposal from the Commission,                      approval for motor vehicle equipment and parts (3),
Having regard        to  the    opinion    of   the    European
Parliament,                                                             HAS ADOPTED THIS DIRECTIVE:
Having regard to the opinion of the Economic and                                                 Article 1
Social Committee,
                                                                        For the purposes of this Directive, Vehicle' means any
                                                                       vehicle propelled by a diesel engine, intended for use on
Whereas the technical requirements which motor vehicles                 the road, with or without bodywork, having at least four
must satisfy pursuant to national laws relate, inter alia, to          wheels and a maximum design speed exceeding 25 km/h,
the emission of gaseous pollutants from diesel engines                 with the exception of vehicles of category Mj as defined
for use in vehicles;                                                    in point 0.4 of Annex I to Directive 70/156/EEC, having
                                                                        a total mass not exceeding 3,5 tonnes, and vehicles
                                                                       which run on rails, agricultural tractors and machines
Whereas those requirements differ from one Member                       and public works vehicles.
State to another; whereas these differences could restrict
the free movement of the products in question; whereas
it is therefore necessary that all the Member States adopt
the same requirements either in addition to or in place of                                       Article 2
their existing rules, in order, in particular, to allow the             No Member State may refuse to grant EEC type-
implementation of the EEC type-approval procedure                       approval or national type-approval of:
which was the subject of Council Directive 70/156/EEC
of 6 February 1970 on the approximation of the laws of
the Member States relating to the type-approval of                     — a vehicle type in respect of its diesel engine, or
motor vehicles and their trailers (*), as last amended by
Directive 80/1267/EEC ( 2 );
                                                                       — a type of diesel engine,
(») OJ No L 42, 23. 2. 1970, p. 1.                                     (3) Doc. E/ECE/324 — E/ECE/TRANS/505, Rev 1/add 48,
O OJ No L 375, 31. 12. 1980, p. 34.                                         5. 4. 1982.
 ---pagebreak---  No C 193/4                             Official Journal of the European Communities                                  31.7.86
 on grounds relating to the gaseous pollutants emitted by                                    Article 5
 such an engine if:
                                                                   Where the procedure laid down in this Article is
— the vehicle type is propelled by a diesel engine for             followed, the Commission shall decide after consulting
    which type-approval of a separate technical unit               the Committee set up by Directive 70/156/EEC, herein-
    within the meaning of Article 9a of Directive                  after referred to as 'the Committee'. The Committee
     70/156/EEC has been granted in accordance with                shall deliberate on requests for its opinion formulated by
    the requirements as laid down in the Annexes to this           the Commission. The Commission, in seeking the
     Directive,                                                    opinion of the Committee, may fix a time limit within
                                                                   which that opinion must be given. The deliberations of
— such a diesel engine regarded as a separate technical            the Committee shall not be followed by a vote.
    unit within the meaning of Article 9a of Directive             However, each member of the Committee may require
    70/156/EEC satisfies the relevant requirements as              that his opinion be entered in the minutes.
    laid down in the Annexes to this Directive.
                          Article 3                                                          Article 6
 1.   The Member State which has granted type-
                                                                    1.    Member States shall bring into force the laws, regu-
approval of a type of diesel engine shall take the
                                                                   lations and administrative provisions necessary in order
necessary measures to ensure that it is informed of any
                                                                   to comply with this Directive by 1 April 1988. They shall
modification of a part or characteristic referred to in
                                                                   forthwith inform the Commission thereof.
point 2.3 of Annex I. The competent authorities of that
Member State shall decide whether fresh tests should be
carried out on the modified engine and a fresh report
drawn up. Where the tests reveal failure to comply with            2.    Until 30 September 1990 Member States shall apply
this Directive, the modification shall not be approved.            those provisions only to those vehicle types for which
                                                                   type-approval in accordance with Directive 72/306/EEC
2.    The Member State which has granted type-                     is also being sought.
approval of a vehicle type in respect of its diesel engine
shall take the necessary measures to ensure that it is
informed of any modification of such vehicle type as               3.    Furthermore, once notification of this Directive has
regards the engine installed. The competent authorities            been effected Member States shall ensure that the
of that Member State shall decide whether after a                  Commission is informed, in time for it to submit its
modification measures in application of Directive                  comments, of the most important laws, regulations and
70/156/EEC, especially of Article 4 or of Article 6                administrative provisions which they envisage adopting in
thereof, must be taken.                                            the field covered by this Directive.
                         Article 4
The amendments necessary for adapting the Annexes so                                         Article 7
as to take account of technical progress shall be adopted
in accordance with the procedure laid down in Article 5.           This Directive is addressed to the Member States.
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                                                                  ANNEX          I
        SCOPE, DEFINITIONS A N D ABBREVIATIONS, APPLICATION FOR EEC TYPE-APPROVAL
                       SPECIFICATIONS A N D TESTS A N D CONFORMITY O F P R O D U C T I O N
        1.              SCOPE
                        This Directive applies to the gaseous pollutants from all motor vehicles equipped with
                        compression-ignition engines as specified in Article 1 with the exception of those vehicles of
                        category Nj for which type-approval has been granted under Directive 70/220/EEC (a) as
                        amended by 8 / . . ./EEC.
        2.              DEFINITIONS A N D ABBREVIATIONS
                        For the purposes of this Directive:
        2.1.             'Approval of an engine' means the approval of an engine type with regard to the level of the
                        emission of gaseous pollutants;
        2.2.             'diesel engine'means   an engine which works on the compression-ignition principle;
        2.3.             'engine type' means a category of engines which do not differ in such essential respects as
                        engine characteristics as defined in Annex II to this Directive;
        2.4.             'gaseous pollutants' mentis carbon monoxide, hydrocarbons (assuming a ratio of CiHjgs) and
                        oxides of nitrogen, the last-named being expressed in nitrogen dioxide (NO2) equivalent;
        2.5.             'net power' means the power in EEC kW obtained on the test bench at the end of the
                        crankshaft, or its equivalent, measured in accordance with the ECE method of measuring
                        power as set out in Directive 80/1269/EEC (b);
        2.6.             'rated speed' means the maximum full-load speed allowed by the governor as specified by the
                        manufacturer in his sales and service literature;
        2.7.             'per cent load' means the fraction of the maximum available torque at an engine speed;
        2.8.             'intermediate speed' means the speed corresponding to the maximum torque value if such
                        speed is within the range of 60 to 75 % of rated speed; in other cases it means a speed equal
                        to 60 % of rated speed;
        2.9.            Abbreviations and units
                        p                kW                 net power output non-corrected (a)
                        CO               g/kWh              carbon monoxide emission
                        HC               g/kWh              hydrocarbon emission
                        NO x             g/kWh              emission of oxides of nitrogen
                        cone             ppm                concentration (ppm by volume)
                        mass             g/h                pollutant mass flow
                        WF                                 weighting factor
                        GEXH             kg/h               exhaust gas mass flow rate on wet basis
                        VEXH             mVh                exhaust gas volume on dry basis
                        VEXH             mVh                exhaust gas volume on wet basis
                        GAIR             kg/h               intake air mass flow rate
                        VAIR             mVh                intake air volume flow rate
                        GFUEL            kg/h               fuel mass flow rate
                        FID                                 flame ionization detector
                        NDUVR                               non-dispersive ultra-violet resonance absorption
                        NDIR                                non-dispersive infrared
                        CLA                                 chemiluminescent analyzer
        (a) OJ No L 76, 6. 4. 1970, p. 1.
        (b) OJ No L 375, 31. 12. 1980, p. 46.
        (c) As described in Annex I to Directive 80/1269/EEC (OJ No L 375, 31. 12. 1980, p. 49).
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             3.              APPLICATION FOR EEC TYPE-APPROVAL
             3.1.            Application for EEC type-approval for a type of engine as a separate technical unit.
             3.1.1.          The application for approval of an engine type with regard to the level of the emission of
                              gaseous pollutants shall be submitted by the engine manufacturer or by a duly accredited
                              representative.
             3.1.2.           It shall be accompanied by the undermentioned documents in triplicate and the following
                             particulars:
             3.1.2.1.         a description of the engine type comprising the particulars referred to in Annex II to this
                              Directive which conform to the requirements of Article 9a of Directive 70/156/EEC,
             3.1.2.2.        drawings of the combustion chamber and of the upper face of the piston.
             3.1.3.          An engine conforming to the 'engine type' characteristics described in Annex II to this
                             Directive shall be submitted to the technical service responsible for conducting the approval
                             tests defined in paragraph 5 below.
             3.2.            Application for EEC type-approval for a vehicle type in respect of its engine.
             3.2.1.          The application for approval of a vehicle with regard to emission of gaseous pollutants by its
                             engine shall be submitted by the vehicle manufacturer or a duly accredited representative.
             3.2.2.          It shall be accompanied by the undermentioned documents in triplicate and the following
                             particulars:
             3.2.2.1.        a description of the vehicle type comprising the particulars referred to in Annex II to this
                             Directive, along with the documentation required in application of Article 3 of Directive
                             70/156/EEC,
                             or
             3.2.2.2.        a copy of the EEC Type-Approval Certificate (Annex VIII to this Directive) for the engine
                             as a separate technical unit which is installed in the vehicle type, along with the documen-
                             tation required in application of Article 3 of Directive 70/156/EEC.
             4.              EEC TYPE-APPROVAL
            4.1.             A certificate conforming to the model specified in Annex VIII shall be issued for approvals
                             referred to under 3.1.
            4.2.             A certificate conforming to the model specified in Annex IX shall be issued for approval
                             referred to under 3.2 to complete the documentation in relation to Articles 4 and 10 of
                             Directive 70/156/EEC.
             5.              MARKINGS
             5.1.            The engine approved as a technical unit must bear:
            5.1.1.          — the trademark or trade name of the manufacturer of the engine,
            5.1.2.          — the manufacturer's commercial description,
            5.1.3.          — the EEC type-approval number preceded by the distinctive letter(s) of the country
                                 granting EEC type-approval (').
            5.2.            These marks must be clearly legible and indelible.
            (') B = Belgium; D = Federal Republic of Germany; DK = Denmark; E = Spain; F = France; GR = Greece; I =
                Italy; IRL = Ireland; L = Luxembourg; NL = Netherlands; P = Portugal; UK = United Kingdom.
 ---pagebreak--- 31.7.86                          Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s                               N o C 193/7
        6.       SPECIFICATIONS AND TESTS
        6.1.     General
                 T h e ' components liable to affect the emission of gaseous pollutants shall be so designed,
                 constructed and assembled as to enable the engine, in normal use, despite the vibration to
                 which it may be subject, to comply with the provisions of this Directive.
        6.2.     Specifications concerning the emission of gaseous pollutants
                 The emission of gaseous pollutants by the engine submitted for testing shall be measured by
                 the method described in Annex III to this Directive. Other methods may be approved if it is
                 found that they yield equivalent results.
        6.2.1.   The mass of the carbon monoxide, the mass of the hydrocarbons and the mass of the oxides
                 of nitrogen obtained shall not exceed the amounts shown in the table below:
                   Mass of carbon monoxide (CO)            Mass of hydrocarbons (HC)               Mass of nitrogen oxides (NO x )
                           (grams per kWh)                      (grams per kWh)                          (grams per kWh)
                                 11,2                                   2,4                                     14,4
        7.       INSTALLATION O N T H E VEHICLE
        7.1.     The engine installation on the vehicle shall comply with the following characteristics in
                 respect to the type-approval of the engine:
        7.1.1.   — intake depression shall not exceed that of the type-approved engine,
        7.1.2.   — exhaust back pressure shall not exceed that of the type-approved engine,
        7.1.3.   — exhaust system volume is within ± 40 % of the type-approved engine.
        8.       CONFORMITY OF P R O D U C T I O N
        8.1.     Every engine bearing an EEC type-approval number pursuant to this Directive shall conform
                 to the engine type-approved.
        8.2.     In order to verify conformity as prescribed in point 8.1, an engine bearing an EEC type-
                 approval number shall be taken from the series.
        8.3.     As a general rule, conformity of the engine with the approved type shall be verified on the
                 basis of the description given in the type-approval certificate and its annexes and, if
                 necessary, an engine shall be subjected to the test referred to in point 6.2 above.
        8.3.1.   For verifying the conformity of the engine in a test, the following procedure is adopted:
        8.3.1.1. An engine is taken from the series and subjected to the test described in Annex III.
        8.3.1.2. If the engine taken from the series does not satisfy the requirements of point 6.2.1 above, the
                 manufacturer may ask for measurements to be performed on a sample of engines taken from
                 the series and including the engine originally taken. The manufacturer shall determine the
                 size (n) of the sample, in agreement with the technical service. Engines other than the engine
                 originally taken shall be subjected to a test. The arithmetical mean (x) of the results obtained
 ---pagebreak--- No C 193/8                                     Official Journal of the European Communities                                            31. 7. 86
                             with the sample shall then be determined for each gaseous pollutant. The production of the
                             series shall then be deemed to conform if the following condition is met:
                                                                         T + k.S < L (a)
                             where:
                             L is the limit value laid down in point 6.2.1 for each gaseous pollutant considered, and
                              k is a statistical factor depending on n and given in the following table:
                                   n           2         3          4         5         6       7          8         9          10
                                   k        0,973      0,613     0,489      0,421     0,376   0,342     0,317      0,296      0,279
                                   n          11         12        13         14        15      16         17        18         19
                                   k        0,265     0,253      0,242      0,233     0,224  0,216      0,210      0,203      0,198
                             I f n > 2 0      k-0,860
            8.3.2.           The technical service responsible for verifying the conformity of production shall carry out
                             tests on engines which have been run-in partially or completely, according to the manufac-
                             turer's specifications.
           (a) s>   = fe^ZJ!
                          n— 1
                 where x is any one of the individual results obtained with the sample n.
                                                                     ANNEX II
           ESSENTIAL CHARACTERISTICS OF THE VEHICLE AND THE ENGINE AND INFORMATION
                                              CONCERNING THE CONDUCT OF TESTS (a)
            1.               DESCRIPTION OF ENGINE
            1.1.             Make:
            1.2.             Type:
            1.3.             Cycle: four-stroke/two-stroke (b)
            1.4.             Bore:                            mm
            1.5.             Stroke:                            mm
           1.6.              Number and layout of cylinders and firing order:
           1.7.              Cylinder capacity:                              cm'
           (a) In the case of non-conventional engines and systems, particulars equivalent to those referred to here shall be supplied
                by the manufacturer.
           (b) Strike out what does not apply.
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         1.8.            Compression ratio (c):
         1.9.            Drawings of combustion chamber and piston crown
         1.10.           Minimum cross-sectional area of inlet and outlet ports:
         1.11.           Cooling system
         1.11.1.          Liquid
                         Nature of liquid:                                               Circulating pumps: yes/no (b)
                         Characteristics or make(s) and type(s):
                         Drive ratio:         '.
                         Thermostat: setting:
                         Radiator: drawing(s) or make(s) and type(s):
                         Relief valve and pressure setting:
                         Fan: characteristics or make(s) and type(s):
                         Fan drive system:                                      Drive ratio:
                         Fan cowl:
         1.11.2.         Air
                         Blower: characteristics or make(s) and type(s):
                         Drive ratio:
                         Air ducting (standard production):
                         Temperature regulation system: yes/no (b) Brief description:
         1.11.3.         Temperatures permitted by the manufacturer
         1.11.3.1.       Liquid cooling: Maximum temperature at outlet:
         1.11.3.2.       Air cooling: Reference point:
                                        Maximum temperature at reference point:
         1.11.3.3.       Maximum outlet temperature of the inlet intercooler:
         1.11.3.4.       Maximum       exhaust   temperature  at  the   point  in  the  exhaust    pipe(s) adjacent to
                         the outlet flange(s) of the exhaust manifold(s):
         1.11.3.5.       Fuel temperature: min                           max
         1.11.3.6.       Lubricant temperature: min                           max
         (b) Strike out what does not apply.
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            1.12.            Supercharger: with/without (b) Description of the system:
                             Make:                                                Type:
            1.13.            Intake system
                             Intake manifold:                                     Description:
                            Air filter:                           Make:                            Type:
                            Intake silencer:                      Make:                       Type:
                            ADDITIONAL ANTI-SMOKE DEVICES
                             (if any, and if not covered by another heading)
                            Description and diagrams:
           3.               AIR INTAKE AND FUEL FEED
           3.1.             Description and diagrams of air intakes and their accessories (heating device; intake silencer,
                            etc.):
           3.2.             Fuel feed
           3.2.1.           Feedpump
                            Pressure (c):                         or characteristic diagram (c):
           3.2.2.           Injection system
           3.2.2.1.         Pump
           3.2.2.1.1.       Make(s):
           3.2.2.1.2.      Type(s):
           3.2.2.1.3.       Delivery                                                         mm3 (c) per stroke at pump speed
                            of                         rpm at full injection, or characteristic diagram (b) (c)
                            Mention the method used: On engine/on pump bench (b)
           3.2.2.1.4.       Injection advance (c):
           3.2.2.1.4.1.     Injection advance curve:
          3.2.2.1.4.2.     Timing:
          3.2.2.2.         Injection piping
          3.2.2.2.1.       Length:
          3.2.2.2.2.       Internal diameter:
          (b) Strike out what does not apply.
          (c) Specify the tolerance.
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         3.2.2.3.         Injector(s)
         3.2.2.3.1.      Make(s):
         3.2.2.3.2.      Type(s):
         3.2.2.3.3.      'Opening pressure':                        bars (c)
                         or characteristic diagram (b) (c):
         3.2.2.4.        Governor
         3.2.2.4.1.      Make(s):                                                      '.
         3.2.2.4.2.      Type(s):
         3.2.2.4.3.      Speed at which out-off starts under full load:                    rpr
         3.2.2.4.4.      Maximum no-load speed:                            rpm
         3.2.2.4.5.      Idling speed:                       rpm
         3.3.            Cold-start system
         3.3.1.          Make(s):
         3.3.2.          Type(s):
         3.3.3.          Description:
         4.              VALVE T I M I N G
         4.1.            Maximum lift of valves and angles of opening and closing in relation to dead centres or
                         equivalent data:
         4.2.            Reference and/or setting ranges (b)
         5.              EXHAUST SYSTEM
         5.1.            Description of exhaust manifold: ....
         5.2.            Description of other parts of the exhaust equipment if the test is made with the complete
                         exhaust equipment provided by the manufacturer, or indication of the maximum back-
                         pressure at maximum power specified by the manufacturer:
         6.              LUBRICATION SYSTEM
         6.1.            Description of system:
         6.1.1.          Position of lubricant reservoir:
         (b) Strike out what does not apply.
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             6.1.2.          Feed system (pump, injection into intake, mixing with fuel, etc.):
             6.2.            Pump (b)
             6.2.1.          Make:                                                                        ....
             6.2.2.          Type and characteristics:
             6.2.3.         Air-cooled, engine pump characteristics (b)
             6.3.            Mixture with fuel (b)
             6.3.1.          Percentage:
             6.4.            Oil cooler: with/without (b)
             6.4.1.          Drawing(s) or make(s) andtype(s):
                            ELECTRICAL EQUIPMENT
                            Generator/alternator (b): characteristics or make(s) and type(s):
                            O T H E R ENGINE-DRIVEN E Q U I P M E N T
                            (Enumeration and brief description if necessary):
            9.               TRANSMISSION
            9.1.            Moment of inertia of engine flywheel:
            9.2.            Additional moment of inertia with no gear engaged:
             10.            ADDITIONAL INFORMATION O N TEST C O N D I T I O N S
             10.1.          Lubricant used:
             10.1.1.        Make:
            10.1.2.         Type:
                            (State percentage of oil in mixture if lubricant and fuel are mixed)
            (b) Strike out what does not apply.
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         11.              ENGINE PERFORMANCES
         11.1.            Idling speed:                          rpm (c)
         11.2.            Power:                       kW at an intermediate engine speed of                                rpm (c)
         11.3.            Maximum power:                               kW at                              rpm (c)
         11.4.           Power at the six points of measurement referred to in Directive 72/306/EEC, Annex III,
                         point 2.1 and measured in accordance with the provisions of Directive 80/1269/EEC (')
                         (Test carried out by the manufacturer) (b)
                         (Test carried out by the technical service conducting approval tests) (b)
                                Measurement points                    Engine speed (n)                        Measured power (P)
                                                                                                                     kW
                                      in
                                      2
                                      3
                                      4
                                      5
                                      6 (**)
                         Point of greatest
                         measurement
                         (*)   Corresponds to the highest of the two values:
                               45 % of the engine speed corresponding to maximum power, 1 000 rpm.
                         (**) Corresponds to maximum n permitted by governor at full regulation load.
        (') OJ No L 375, 31. 12. 1980, p. 46.
        (b) Strike out what does not apply.
        (c) Specify the tolerance.
                                                                  ANNEX       III
                                                           TEST PROCEDURE
        1.               INTRODUCTION
        1.1.             This Annex describes the method of determining emissions of gaseous pollutants from the
                         engines to be tested.
        1.2.             The test shall be carried out with the engine mounted on a test bench and connected to a
                         dynamometer.
                         MEASUREMENT PRINCIPLE
                         The gaseous emissions from the exhaust of the engine include hydrocarbons, carbon
                         monoxide and oxides of nitrogen. During a prescribed sequence of warmed-up-engine
                         operating conditions the amounts of the above gases in the exhaust shall be examined
                         continuously. The prescribed sequence of operations consist of a number of speed and power
                         modes which span the typical operating range of diesel engines. During each mode the
                         concentration of each pollutant, exhaust flow and power output shall be determined and the
                         measured values weighted and used to calculate the grams of each pollutant emitted per
                         kilowatt hour, as described in this Annex.
        3.               EQUIPMENT
        3.1.             Dynamometer and engine equipment
                        The following equipment shall be used for emission tests of engines on engine dynamo-
                        meters :
        3.1.1.          an engine dynamometer with adequate characteristics to perform the test cycle described in
                        paragraph 4.1 of this Annex;
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             3.1.2. measuring instruments for speed, torque, fuel consumption, air consumption, temperature of
                    coolant and lubricant, exhaust gas pressure and section flow resistance, exhaust gas
                    temperature, air inlet temperature, atmospheric pressure, fuel temperature and humidity. The
                    accuracy of these instruments shall satisfy the EEC method of measuring the power of the
                    internal combustion engines of road vehicles;
             3.1.3. an engine cooling system with sufficient capacity to maintain the engine at normal operating
                    temperatures for the duration of the prescribed engine tests;
             3.1.4. a non-insulated and uncooled exhaust system extending at least 0,5 m past the point where
                    the exhaust probe is located, and presenting an exhaust backpressure within ± 650 Pa
                    ( ± 5 mm Hg) of the upper limit at the maximum rated power, as established by the engine
                    manufacturer's sale and service literature for vehicle application;
             3.1.5. an engine air inlet system presenting an air inlet restriction within ± 300 Pa (225 mm H2O)
                    of the upper limit for the engine operating condition which results in maximum air flow, as
                    established by the engine manufacturer for an air cleaner, for the engine being tested. When
                    an engine is tested for exhaust emissions, the complete engine shall be tested with all
                    standard accessories which might reasonably be expected to influence emissions to the
                    atmosphere installed and functioning.
            3.2.    Analytical and sampling equipment
                    The system shall comprise one FID analyzer for the measurement of the unburned hydro-
                    carbons (HC), and NDIR analyzer for measurement of carbon monoxide (CO) and a CLA
                    or N D U V R analyzer for measurement of oxides of nitrogen (NO x ). Due to the heavy
                    hydrocarbons present in the diesel exhaust, the FID system shall be heated and maintained at
                    a temperature between 423 and 473 K (150 and 200 °C).
                    The accuracy of the analyzers shall be ± 2,5 % of full-scale deflection or better. The scale
                    of measurement of the analyzers shall be selected appropriately in relation to the values
                    measured.
                    The following span and zero gases may be used:
                    Analyzer               Span gas                   Zero gas
                    CO                     C O in N 2                 nitrogen or dry purified air
                    NOx                    N 0 2 in N 2               nitrogen or dry purified air
                    HC                     C3H8 in air                dry purified air
                    Annex V describes the analytical systems recommended. Other systems or analyzers which
                    have proved to give equivalent results may be used.
            4.      TEST PROCEDURE
            4.1.    Test Cycle
                    The following 13-mode cycle shall be followed in dynamometer operation on the test
                    engine:
                    Mode No           Engine speed                                          Per cent load
                      1               idle
                      2               intermediate                                                    10
                      3               intermediate                                                    25
                      4               intermediate                                                    50
                      5               intermediate                                                    75
                      6               intermediate                                                   100
                      7               idle
                      8               rated                                                          100
                      9               rated                                                           75
                     10               rated                                                           50
                     11               rated                                                           25
                     12               rated                                                           10
                     13               idle
 ---pagebreak--- 31.7.86                           Official Journal of the European Communities                                  No C 193/15
        4.2.     Measurement of exhaust gas flow
                 For calculation of the emission it is necessary to know the exhaust gas flow (see paragraph
                 4.8.1.1 below). For determination of exhaust flow either of the following methods may be
                 used:
                 (a) direct measurement of the exhaust flow by flow nozzle or equivalent metering system;
                 (b) measurement of the air flow and the fuel flow by suitable metering systems and calcu-
                       lation of the exhaust flow by the following equations:
                                                GEXH = G A I R -I- GpuEL
                                                or
                                                V E X H = V A I R — 0,75 GpuEL
                                                or
                                                V"EXH = V A I R + 0,77 G F U E L
                 The accuracy of exhaust flow determination shall be ± 2,5 % or better. The concentration
                 of carbon monoxide and nitric oxide are measured in the dry exhaust. For this reason the
                 C O and N O x emissions shall be calculated using the dry exhaust gas volume V E X H -
                 However in the case of an analytical system with heated sampling line, the N O x emissions
                 shall be calculated using the exhaust gas volume V"EXH- ^ t ^ ie e x n a u s t mass flow rate
                 (GEXH) is used in the calculation the C O and N O x concentrations shall be related to the wet
                 exhaust. Calculation of the H C emission shall include G E X H a n d V E X H according to the
                 measuring method used.
        4.3.     Operating procedure for analyzers and sampling system
                 The operating procedure for analyzers shall follow the start-up and operating instructions of
                 the instrument manufacturer. The following minimum requirements shall be included:
        4.3.1.    Calibration procedure
                 The calibration procedure shall be carried out within one month preceding the emission test.
                 The instrument assembly shall be calibrated and calibration curves checked against standard
                 gases. The same gas flow rates shall be used as when sampling exhaust.
        4.3.1.1. A minimum of two hours shall be allowed for warming up the analyzers.
        4.3.1.2. A system leakage test shall be performed. The probe shall be disconnected from the exhaust
                 system and the end plugged. The analyzer pump shall be switched on. After an initial stabil-
                 ization period all flow meters and pressure gauges should read zero. If not, the sampling
                 line(s) shall be checked and the fault corrected.
        4.3.1.3. The N D I R analyzer shall be tuned, where appropriate, and the flame combustion of the FID
                 analyzer optimized.
        4.3.1.4. Using purified dry air (or nitrogen), the C O and N O x analyzers shall be set at zero; dry air
                 shall be purified for the H C analyzer. Using appropriate calibrating gases, the analyzers shall
                 be reset.
        4.3.1.5. The zero setting shall be rechecked and the procedure described in paragraph 4.3.1.4 above
                 repeated, if necessary.
        4.3.1.6. The NDIR analyzers shall be calibrated with calibrating gases that are approximately 25, 50,
                 75 and 90 % of each range used; the CLA and FID analyzers shall be calibrated at approx-
                 imately 50 % and 90 % of each range used. The concentration of the standards shall be
                 obtained to within ± 2,5 % accuracy.
        4.3.1.7. The calibration results shall be compared with previous data. Any significant change may
                 reflect a system fault which shall be located, corrected and recalibrated. The best fitting
                 calibration curve shall be selected, taking into account the accuracy of the calibration of
                 standard gases.
        4.3.2.   Pre-test checks
                 A minimum of two hours shall be allowed for warming up the infrared N D I R analyzers, but
                 it is preferable that power be left on continuously in the analyzers. The chopper motors may
                 be turned off when not in use.
        4.3.2.1. The H C analyzer shall be set at zero on dry air or nitrogen and a stable zero obtained on
                 the amplifier meter and recorder.
 ---pagebreak--- N o C 193/16                          Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s             3 1 . 7 . 86
             4.3.2.2. Span gas shall be introduced and the gain set to match the calibration curve. The same flow
                      rate shall be used for calibration, span and exhaust sampling to avoid correction for sample
                      cell pressure. Span gas having a concentration of the constituent that will give a 75 to 95 %
                      full-scale deflection shall be used. Concentration shall be obtained to ± 2,5 %.
             4.3.2.3. Zero shall be checked and the procedures described in paragraphs 4.3.2.1 and 4.3.2.2 above
                      repeated, if required.
             4.3.2.4. Flow rates shall be checked
             4.4.     Fuel
                      The fuel shall be the reference fuel specified in Annex IV to this Directive.
             4.5.     Test laboratory
             4.5.1.   The absolute temperature (T) of the laboratory expressed in degrees Kelvin and the dry
                      atmospheric pressure (ps) expressed in kilopascals shall be measured and the parameter F
                      shall be determined by the formula
                                                                   0,65                                       0,5
                                          '- ( 5 )                                  *                     (&)
             4.5.2.   For a test to be recognized as valid, the parameter F shall be such that
                                                                   0,96 < F < 1,06
             4.6.     Test run
                      During each mode of the test cycle the specified speed shall be held to within ± 50 rpm and
                      the specified torque shall be held to within ± 2 % of the maximum torque at the test speed.
                      The fuel temperature at the injection pump inlet shall be 311 ± 5 K (38 ± 5 °C). The
                      governor and fuel system shall be adjusted as established by the manufacturer's sales and
                      service literature. The following steps shall be taken for each test:
             4.6.1.   instrumentation and sample probes shall be installed as required;
             4.6.2.   the cooling system shall be started;
             4.6.3.   the engine shall be started and warmed up until all temperatures and pressures have reached
                      equilibrium;
             4.6.4.   the torque curve at full load shall be determined by experimentation to calculate the torque
                      values for the specified test modes;
             4.6.5.   the emission analyzers shall be set at zero and spanned;
             4.6.6.   the test sequence shall be started (see paragraph 4.1 above). The engine shall be operated for
                      six minutes in each mode, completing engine speed and load changes in the first minute. The
                      responses of the analyzers shall be recorded on a strip chart recorder for the full six minutes
                      with exhaust gas flowing through the analyzers at least during the last three minutes. The
                      engine speed and load, intake air temperature and depression exhaust back pressure, fuel
                      flow and air or exhaust flow shall be recorded during the last five minutes of each mode,
                      with the speed and load requirements being met during the last minute of each mode;
             4.6.7.   any additional data required for calculation shall be read and recorded (see paragraph 4.7);
             4.6.8.   the zero and span settings of the emission analyzers shall be checked and reset, as required,
                      at least at the end of the test. The test shall be considered satisfactory if the adjustment
                      necessary after the test does not exceed the accuracy of the analyzers prescribed in
                      paragraph 3.2 above.
             4.7.     Chart reading
                      The last 60 seconds of each mode shall be located, and the average chart reading for H C ,
                      C O and N O x over this period shall be determined. The concentration of H C , C O and N O x
                      during each mode shall be determined from the average chart readings and the
                      corresponding calibration data. However a different type of registration can be used if it
                      assures an equivalent data acquisition.
 ---pagebreak--- 3 1 . 7 . 86                         Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s                  N o C 193/17
             4.8.     Calculations
             4.8.1.   The final reported test results shall be derived through the following steps:
                                                                        or
             4.8.1.1. the exhaust gas mass flow rate G E X H                  V E X H and V E X H shall be determined (see
                      paragraph 4.2 above) for each mode;
             4.8.1.2. when applying G E X H the measured carbon monoxide and oxides of nitrogen concentration
                      shall be converted to a wet basis according to Annex VI. However in the case of an
                      analytical system with heated sampling line, the N O x emissions shall not be converted
                      according to Annex VI;
             4.8.1.3. the N O x concentration shall be corrected according to Annex VII;
             4.8.1.4. the pollutant mass flow for each mode shall be calculated as follows:
                           (1) N O x  mass   - 0,001587 x N O x c o n c x G E X H
                           (2) C O m a s s   = 0,000966 x C O c o n c x G E X H
                           (3) H C m a s s   - 0,000478 x H C c o n c x G E X H
                           or
                           (1) N O x m a s s = 0,00205 x N O x c o n c x V E X H
                           (2) C O m a s s   - 0,00125 x CO c o n t ; x V E X H
                           (3) H C m a s s   = 0,000618 x H C c o n c x V E X H '
             4.8.2.   The emissions shall be calculated in the following way:
                                                                    £ NOx         mass x WF
                                                        NOx                 £PxWF
                                                                     £ CO m a s s      x WF
                                                        CO                 Y P x WF
                                                                     £    HCmass       x WF
                                                        HC                 J] P x WF
                      The weighting factors used in the above calculation are according to the following table:
                      Mode No                                  WF
                            1                                0,25/3
                           2                                 0,08
                           3                                 0,08
                           4                                 0,08
                           5 .                               0,08
                           6                                 0,25
                           7                                 0,25/3
                           8                                 0,10
                           9                                 0,02
                          10                                 0,02
                          11                                 0,02
                          12                                 0,02
                          13                                 0,25/3
 ---pagebreak--- N o C 193/18                                Official J o u r n a l of t h e E u r o p e a n C o m m u n i t i e s                 31.7.86
                                                                    ANNEX          IV
             SPECIFICATIONS O F REFERENCE FUEL PRESCRIBED FOR APPROVAL TESTS A N D T O
                                             VERIFY CONFORMITY OF P R O D U C T I O N
             CEC REFERENCE FUEL RF-03-A-80
            Type: Diesel fuel
                                                                        Limits and Units                          ASTM method (')
             Density at 15 °C                                           min. 0,835                                1298
                                                                        max. 0,845
             Cetane index                                               min. 51                                    976
                                                                        max. 57
             Distillation (2)                                                                                        86
                50 % Vol. point                                         min. 245 °C
                90 % Vol. point                                         330 ± 10 °C
                Final boiling point                                     max. 370 °C
            Viscosity, 40 ° C                                           min. 2,5 cSt ( mmVs)                       445
                                                                        max. 3,5
             Sulphur content                                            min. 0,20 % mass                          1266, 2622
                                                                        max. 0,50                                 or 2785
             Flash point                                                min. 55 °C                                 93
             Cold filter plugging point                                 max. — 5 ° C                              C E N Draft pr
                                                                                                                  EN116orIP309
             Conradson carbon residue on 10 % distillation
             residue                                                    max.   0,30    % mass                     189
            Ash content                                                 max.   0,01    % mass                     482
            Water content                                               max.   0,05    % mass                      95 or 1744
             Copper corrosion test at 100 ° C                           max.   1                                   130
             Neutralization (strong acid) number                        max.   0,20    mg K O H / g                974
             Note 1:                Equivalent ISO methods will be adopted when issued for all properties listed above.
             Note 2:                The figures quoted show the total evaporated quantities (% recovered 4- % loss).
             Note 3:                This fuel may be based on straight run and cracked distillates; desulphurization is
                                    allowed. It must not contain any metallic additives.
             Note 4:                The values quoted in the specification are 'true values'. In establishment of their limit
                                    values the terms of ASTM D 3244 Defining a Basis for Petroleum Product Quality
                                    Disputes have been applied and in fixing a maximum value, a minimum difference of
                                    2 R above zero has been taken into account; in fixing a maximum and minimum
                                    value, the minimum difference is 4 R (R = reproducibility).
                                    Notwithstanding this measure, which is necessary for statistical reasons, the manu-
                                    facturer of a fuel should nevertheless aim at a zero value where the stipulated
                                    maximum value is 2 R and at the mean value in the case of quotations of maximum
                                    and minimum limits.
                                    Should it be necessary to clarify the question as to whether a fuel meets the
                                    requirements of the specification, the terms of ASTM D 3244 should be applied.
             Note 5:                If it is required to calculate the thermal efficiency of an engine or vehicle, the
                                    calorific value of the fuel can be calculated from:
                                    Specific energy (calorific value) (net) MJ/kg
                                    (46,423-8,792d 2 + 3,170d) I 1 — (x + y + s) I + 9,420s — 2,449x where:
                                    d is the density at 15 ° C,
                                    x is the proportion by mass of water (°/o divided by 100),
                                    y is the proportion by mass of ash (°/o divided by 100),
                                    s is the proportion by mass of sulphur (°/o divided by 100).
 ---pagebreak--- 3 1 . 7 . 86                              Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s           N o C 193/19
                                                                   ANNEX       V
                                                       ANALYTICAL SYSTEMS
             Three analytical systems are described based on the use of:
             — FID analyzer for the measurement of hydrocarbons,
             — NDIR analyzer for the measurement of carbon monoxide and nitrogen oxides, or, as an alternative
                 choice,
             — NDIR analyzer for the measurement of carbon monoxide and CLA analyzer with or without heated
                 sampling line for measurement of nitrogen oxides.
             System 1
             A schematic diagram of the analytical and sampling system using the chemiluminescent analyzer for
             measuring N O x is shown in Figure 1.
             SP                    — Stainless-steel sample probe, to obtain samples from the exhaust system. A
                                      closed-end multihole static probe extending at least 80 % across the exhaust pipe
                                      is recommended. The exhaust gas temperature at the probe shall be not less than
                                      343K(70°C).
             HSL                   — Heated sampling line, temperature shall be kept between 423 and 473 K (150 and
                                      200 °C); the line shall be made in stainless steel or PTFE.
             Fj                    — Heated pre-filter, if used; temperature shall be the same as HSL.
             Tj                    — Temperature readout of sample stream entering oven compartment.
             V!                    — Suitable valving for selecting sample, span gas or air gas flow to the system. The
                                      valve shall be in the oven compartment or heated to the temperature of the
                                      sampling line.
             V2, V3                — Needle valves to regulate calibration gas and zero gas.
             F2                    — Filter to remove particulates. A 70-mm-diameter glass-fibre-type filter disc is
                                      suitable. The filter shall be readily accessible and changed daily or more
                                      frequently, as needed.
             Pi                    — Heated sample pump.
             G\                    — Pressure gauge to measure pressure in sample line.
             V4                    — Pressure regulator valve to control pressure in sample line and flow to detector.
             FID                   — Heated flame ionization detector for hydrocarbons. Temperature of oven shall be
                                      kept between 423 and 473 K (150 and 200 °C).
             FLj                   — Flow meter to measure sample by-pass flow.
             Ri, R 2               — Pressure regulators for air and fuel.
             SL                    — Sample line. The line shall be made in PTFE or in stainless steel. It may be heated
                                      or unheated.
             B                     — Bath to cool and condense water from exhaust sample. The bath shall be main-
                                      tained at a temperature of 273 to 277 K (0 to 4 °C) by ice or refrigeration.
             C                     — Cooling coil and trap to condense and collect water vapour. A coiled 2,5- to
                                      3-mm stainless-steel line attached to 25-mm-diameter 150-mm-length trap would
                                      be typical.
             T2                    — Temperature readout of bath temperature.
             V5, Vfc               — Toggle valves to drain condensate traps and bath.
 ---pagebreak--- No C 193/20                             Official Journal of the European Communities                                   31.7.86
           Vy                    — Three-way valve.
           F3                    — Filter for removing particulate contaminants from sample prior to analysis. A
                                    glassfibre type of at least 70 mm diameter is suitable.
           P2                   — Sample pump.
           Vg                    — Pressure regulator to control sample flow.
           V9, Vjo, V n , V12    — Three-way ball valves or solenoid valves to direct sample, zero gas or calibrating
                                    gas streams to the analyzers.
           V,3, V14              — Needle valves to regulate flows to the analyzers.
           CO                    — NDIR analyzer for carbon monoxide.
           NOx                   — CLA analyzer for nitric oxides.
           FL-2, FL3, FL4        — By-pass flowmeters.
           System 2
           A schematic diagram of the analytical and sampling system using the NDUVR analyzer for measuring N O
           is shown in Figure 2.
           SP                    — Stainless-steel sample probe, to obtain samples from the exhaust system. A
                                    closed-end muhihole static probe extending at least 80 % across the exhaust pipe
                                    is recommended; the temperature at the probe shall be at least 343 K (70 °C) (in
                                    accordance with Directive 72/306/EEC). The probe shall be located in the
                                    exhaust line at a distance of 1 to 5 m from the exhaust manifold outlet flange or
                                    the outlet of the turbocharger.
           HSL                   — Heated sampling line, temperature shall be kept between 423 and 473 K (150 and
                                    200 °C); the line shall be made in stainless steel or PTFE.
           Fi                    — Heated pre-filter, if used; temperature shall be the same as the HSL.
           Tj                    — Temperature readout of sample stream entering oven compartment.
           Vj                    — Suitable valving for selecting sample, span gas or air zero gas flow to the system.
                                    The valve shall be in the oven compartment or heated to the temperature of the
                                    sampling line.
           V2, V 3               — Needle valves to regulate calibration gas and zero gas.
           F2                    — Filter to remove particulates. A 70-mm-diameter glass-fibre-type filter disc is
                                    suitable. The filter shall be readily accessible and changed daily or more
                                    frequently, as needed.
           Pi                    — Heated sample pump.
           Gj                    — Pressure gauge to measure pressure in sample line.
           V4                    -— Pressure regulator valve to control pressure in sample line and flow to detector.
           FID                   — Heated flame ionization detector for hydrocarbons. Temperature of oven shall be
                                    kept between 423 and 473 K (150 and 200 °C).
           FLi                   — Flowmeter to measure sample by-pass flow.
           Ri, R-2               — Pressure regulators for air and fuel.
           SL                    — Sample line. The line shall be made in PTFE or in stainless steel.
           B                     — Bath to cool and condense water from exhaust sample. The bath shall be main-
                                    tained at a temperature of 273 to 277 K (0 to 4 °C) by ice or refrigeration.
 ---pagebreak--- 31.7.86                             Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s          N o C 193/21
        C                   — Cooling coil and trap to condense and collect water vapour. A coiled 2,5- to
                                3-mm stainless-steel line attached to 25-mm-diameter 150-mm-length trap would
                                be typical.
        T2                  — Temperature readout of bath temperature.
        V5, V6              — Toggle valves to drain condensation trap and bath.
        V7                  — Three-way valve.
        F3                  — Filter for removing particulate contaminates from sample prior to analysis. A
                                glassfibre type of at least 70 mm diameter is suitable.
        P2                  — Sample pump.
        Vg                  — Pressure regulator to control sample flow.
        V9                  — Ball or solenoid valve to direct sample, zero gas or calibrating gas streams to the
                                analyzers.
        VJQ, V11            — Three-way valve to by-pass drier.
        D                   — Drier to remove moisture in the sample stream. If a drier is used before N O x
                                analyzer it shall have minimum effect on N O x concentration.
        V12                 — Needle valve to regulate flow to the analyzers.
        G2                  — Gauge to indicate inlet pressure to the analyzers.
        CO                  — NDIR analyzer for carbon monoxide.
        NOx                 — NDIR analyzer for nitric oxides.
        FL2, FL33
        System              — By-pass flowmeter.
        A schematic diagram of the analytical and sampling system is shown in Figure 3 to this Annex.
        SP                  — Stainless-steel sample probe, to obtain samples from exhaust system. A closed-end
                                multihole straight probe extending at least 80 % across the exhaust pipe is
                                recommended. The exhaust gas temperature at the probe shall be not less than
                                343K(70°C).
        HSLj                — Heated sampling line, temperature shall be kept between 453 and 473 K (180 and
                                200 °C); the line shall be made in stainless steel or PTFE.
        Fi                  — Heated pre-filter, if used; temperature shall be the same as HSLj.
        Tj                  — Temperature readout of sample stream entering oven compartment.
        V!                  — Suitable valving for selecting sample, span gas or air gas flow to the system. The
                                valve shall be in the oven compartment or heated to the temperature of the
                                sampling line HSLj.
        V2, V3              — Needle valves to regulate calibration gas and zero gas.
        F2                  — Filter to remove particulates. A 70-mm-diameter glass-fibre-type filter disc is
                                suitable. The filter shall be readily accessible and changed daily or more
                                frequently, as needed.
        Pi                  — Heated sample pump.
        Gj                  — Pressure gauge to measure pressure in sample line H C analyzer.
        R3                  — Pressure regulator valve to control pressure in sample line and flow to detector.
        FID                 — Heated flame ionization detector for hydrocarbons. Temperature of oven shall be
                                kept between 453 and 473 K (180 and 200 °C).
 ---pagebreak--- N o C 193/22                    Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s             31.7.86
             FLi          — Flow meter to measure sample by-pass flow.
             Ri, R.2      — Pressure regulators for air and fuel.
             HSL2         — Heated sampling line, temperature shall be kept between 368 and 473 K (95 and
                            200 °C): the line shall be made in stainless steel or PTFE.
            T2            — Temperature readout of sample stream entering CL analyzer.
            T3            — Temperature readout of N O j to N O converter.
            V9, V10       — Three-way valve to by-pass N 0 2 to N O converter.
            Vn            — Needle valve to balance flow through NO2 to N O converter and by-pass.
             SL           — Sample line. The line shall be made in PTFE or in stainless steel. It may be heated
                            or unheated.
             B            — Bath to cool and condense water from exhaust sample. The bath shall be main-
                            tained at a temperature of 273 to 277 K (0 to 4 °C) by ice or refrigeration.
             C            — Cooling coil and trap to condense and collect water vapour. A coiled 2,5- to
                            3-mni stainless-steel line, outside diameter 6 mm, attached to 25-mm-diameter
                            150-mm-length trap would be typical.
            T4            — Temperature readout of bath temperature.
            V5, Vfc       — Toggle valves to drain condensate traps and bath.
            R4, R5        — Pressure regulator to control sample flow.
            V7, Vg        — Ball valve or solenoid valves to direct sample, zero gas or calibrating gas streams
                            to the analyzers.
            VI2J V J 3    — Needle valves to regulate flows to the analyzers.
            CO            — NDIR analyzer for carbon monoxide.
            NOx           — CL analyzer for nitric oxides.
            FL2, FL3, FL4 — By-pass flowmeters.
            FL5           — By-pass flowmeter.
            V4, V14       — Three-way ball or solenoid valves. The valves shall be in an oven compartment or
                            heated to the temperatures of the sampling line HSL t
 ---pagebreak---    31.7. 86             Official Journal of the European Communities No C 193/23
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 ---pagebreak---     No C 193/24            Official Journal of the European Communities 31.7. 86
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 ---pagebreak---          31. 7. 86                                  Official Journal of the European Communities                                N o C 193/25
                         Flow diagram of exhaust gas analysis system for CO, NO x and HC (analysis by CLA and heated sample line)
                                                                              HC (FID)                         Air   Fuel
                                                             Air zero gas
                                                                >              4*             0G< +4
                                                                                                                              Vent
                 Span gas
                                                      r.                      4*                                   HC       —>
                                                                                                                    FL,      Vent
       SP                  V.     rn                         Calibration gas
       =^®T1H£>                                                                    Zero gas            NO (CL) heated
                                                        HSL2
     ^t* f                                                                                  0G2                 ^ 3
                                                                   ff
                                                                      V*lT,
                        Back flush
    Exhaust
                                                                                                                  £2<^-                             I
             Key
                                                      I                       J
     0       Sample probe (SP)
                                                                                     *
                                                                                                      E&3
                                                                                                       Vo
                                                                                                                NOr-NO         C&3
                                                                                                                                Vm
                                                                                                                                       >*<— I N O
                                                                                                                                        V«   Li
     Hf]     Heated airfilter (F)
    2*~.'    Heated sample line (HLS)
     0       Temperature gauge (T)                                                                         FL2
                                                                                  Calibration fl
     (3      Pressure gauge (G)                                                   span gas
             Bath cooler (B)                     SL
                                                                                                        J
     E       Filter (F)
    Q        Sample pump (P)
      - -
  r* * 1
  |       i Heated oven
                                                                                                                          CO (NDIR)
  I     J    Converter
                                                            Zero gas
                                                                                                                                               —>
  U    J     Analyzer
                                                                                                                          O
                                                                                                                                                FL4
 "^5^"       Drain valve (V)                                                                                                    G3
 -C*3-       Needle valve (V)
                                                                                                                                       CO
-C^<1-       Pressure regulator (R)
 -t>3<l-    Three-way valve (V)
 -CJkj-     Selecting valve (v)
    r        Flometer (FL)                             Calibration span gas
                                                                            Figure 3
 ---pagebreak--- No C 193/26                                   Official Journal of the European Communities                              31.7.86
                                                                  ANNEX VI
                          CONVERSION OF CO AND NO x CONCENTRATION TO A WET BASIS
           The CO and NO x exhaust gas concentrations as measured in this procedure are on a dry basis. To convert
           the measured values to the concentrations present in the exhaust (wet basis), the following relationship may
           be employed:
           ppm (wet basis) = ppm (dry basis) x
                                                             1 — 1,85  ( G
                                                                           FUEL
                                                                          GAIR
                                                                                \
                                                                                /
           where:
           GFUEL = is the fuel flow (kg/s) (kg/h),
           (JAIR    = is the air flow (kg/s) (kg/h).
                                                                  ANNEX VII
                                NITROGEN OXIDES OF HUMIDITY CORRECTION FACTOR
           The values of the oxides of nitrogen shall be multiplied by the following humidity correction factor only
           when the sampling line is not heated. In the case of an analytical system with heated sampling line no
           correction factor is applicable.
                                   1
            1 + A (7m — 75) + B x 1,8 (T — 302)
          where:
                                          FW
                            0,044             *- — 0,0038
                                         GAIR
                            0,116       - ^ ^       + 0,0053
                                         ^AIR
          m          = humidity of the inlet air in grams of water per kilogram of dry air,
          T          = temperature of the air in K,
             ~       _ fuej a j r ratj0  ^ j y a j r basis).
            GAIR
 ---pagebreak--- 31.7.86                                  Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s                 N o C 193/27
                                                                 ANNEX       VIII
                                                                   MODEL
                                               Maximum size: A 4 (210 mm X 297 mm)
                                                                                                  Name of administration
        EEC TYPE-APPROVAL CERTIFICATE IN RESPECT OF A SEPARATE TECHNICAL U N I T
        (Article 9a of the Council Directive of 6 February 1970 on the approximation of the laws of the Member
        States relating to the type-approval of motor vehicles and their trailers.)
        Separate technical unit: Diesel engine. Emission of gaseous pollutants.
        EEC type-approval number of the technical unit ('):
             1. Trade name or mark of the engine:
            2. Engine type:
            3. Manufacturer's name and address:
            4. If applicable, name and address of manufacturer's representative:
            5. Emission levels:
                13 mode emission test values:
                CO                             g/kWh,
                HC                             g/kWh,
                NOx                            g/kWh.
            6. Any restrictions on use or conditions for fitting:
            7. Date on which the model was submitted for the issue of EEC type-approval:
            8. Technical service conducting tests:
            9. Date of the test report issued by that technical service:
        10. Number of test report issued by that technical service:
        11. EEC type-approval of the separate technical unit is hereby granted/refused (a)
        12. Place:
         13. Date:
         14. Signature:
         15. The following documents bearing the abovementioned type-approval number of the separate technical
                unit in question are attached to this Annex (to be completed if necessary):
                One copy of Annex II duly completed together with the drawings and diagrams referred to;
                      photograph(s) of the engine.
        16. Remarks:
        (a) Preceded by the distinctive letter(s) of the country granting type-approval: B = Belgium, D = Federal Republic of
               Germany; DK = Denmark; E = Spain; F = France; GR = Greece; I = Italy; IRL = Ireland; L = Luxembourg;
               NL = Netherlands; P = Portugal; UK = United Kingdom.
        ( l ) Delete whichever does not apply.
 ---pagebreak--- N o C 193/28                               Official J o u r n a l of the E u r o p e a n C o m m u n i t i e s             31.7.86
                                                                   ANNEX        IX
                                                                                                    Name of administration
            A N N E X T O T H E EEC T Y P E - A P P R O V A L CERTIFICATE O N T H E EMISSION O F GASEOUS
                                                POLLUTANTS BY DIESEL ENGINES
            (Article 4 (2) and Article 10 of the Council Directive of 6 February 1980 on the approximation of the laws
            of the Member States relating to the type-approval of motor vehicles and their trailers.)
            EEC type-approval number:
            1.    Tade name or mark of the vehicle:
            2.    Vehicle type:
            3.    Manufacturer's name and address:
            4.    If applicable, name and address of manufacturer's representative:
            5.    Engine:
            5.1. Trade name or mark:
            5.2. Type:
            5.3. EEC type-approval number as a separate technical unit:
            6.    Engine submitted for approval tests on: ...„
            7.   Technical service conducting approval tests:
            8.    Date of test report issued by that service:
            9.    Number of test report issued by that service:
            10.  Approval granted/refused (')
            11.  Site of approval mark on the vehicle:
            12.   Place:
            13.  Date:
            14.  Signature:
            15.  The following documents, bearing the approval number shown above, are annexed to this communi-
                 cation :
                 One copy of Annex II duly completed together with the drawings and diagrams referred to and a
                 copy of the EEC engine type-approval certificate.
           (') Delete whichever does not apply.