This document is meant purely as documentation tool and the institutions do not assume any liability for its contents
"BCOUNCIL DIRECTIVE
of 16 December 1980
on the approximation of the laws of the Member States relating to the engine power of motor vehicles
(80/1269/EEC)
(OJ L 375, 31.12.1980, p. 46)
Amended by:
Official Journal
No page date
"M1 Commission Directive 88/195/EEC of 24 March 1988 L 92 50 9.4.1988
"M2 Commission Directive 89/491/EEC of 17 July 1989 L 238 43 15.8.1989
Corrected by:
"C1 Corrigendum, OJ L 105, 26.4.1988, p. 34 (88/195/EEC)1980L1269 — EN — 25.07.1989 — 002.001 — 1
COUNCIL DIRECTIVE
of 16 December 1980
on the approximation of the laws of the Member States relating to
the engine power of motor vehicles
(80/1269/EEC)
THE COUNCIL OF THE EUROPEAN COMMUNITIES,
Having regard to the Treaty establishing the European Economic
Community, and in particular Article 100 thereof,
Having regard to the proposal from the Commission (1),
Having regard to the opinion of the European Parliament (2),
Having regard to the opinion of the Economic and Social Committee (3),
Whereas the technical requirements which motor vehicles must satisfy
pursuant to certain national laws relate inter alia to the method of
measuring engine power which must be used to indicate the engine
power of a vehicle type;
Whereas those requirements differ from one Member State to another;
whereas this results in technical barriers to trade which must be
eliminated by all Member States adopting the same requirements either
in addition to or in place of their existing rules, in order in particular to
allow the EEC type-approval procedure 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 motor
vehicles and their trailers (4), as last amended by Directive
80/1267/EEC (5), to be introduced in respect of each type of vehicle,
HAS ADOPTED THIS DIRECTIVE:
Article 1
For the purposes of this Directive, ‘vehicle’ means any motor vehicle
intended for use on the road, with or without bodywork, having at least
four wheels and a maximum design speed exceeding 25 km/h, with the
exception of vehicles which run on rails and of agricultural tractors and
machinery.
Article 2
No Member State may refuse to grant EEC type-approval or national
type-approval in respect of a vehicle, or refuse or prohibit the sale,
registration, entry into service or use of a vehicle, on grounds relating to
its engine power if this has been determined in accordance with Annexes
I and II.
Article 3
Any amendments necessary for adapting the requirements of the
Annexes to take account of technical progress shall be adopted in
accordance with the procedure laid down in Article 13 of Directive
70/156/EEC.!B
(1) OJ No C 104, 28. 4. 1980, p. 9.
(2) OJ No C 265, 13. 10. 1980, p. 76.
(3) OJ No C 182, 21. 7. 1980, p. 3.
(4) OJ No L 42, 23. 2. 1970, p. 1.
(5) See page 34 of this Official Journal.1980L1269 — EN — 25.07.1989 — 002.001 — 2
Article 4
1. Member States shall bring into force the provisions necessary in
order to comply with this Directive within 18 months of its notification.
They shall forthwith inform the Commission thereof.
2. Member States shall ensure that the texts of the main provisions of
national law which they adopt in the field covered by this Directive are
communicated to the Commission.
Article 5
This Directive is addressed to the Member States.!B1980L1269 — EN — 25.07.1989 — 002.001 — 3
ANNEX 1
DETERMINATION OF ENGINE POWER
1. EEC TYPE-APPROV AL
1.1. Application for EEC type-approval
The application for EEC type-approval for a vehicle type in respect of
the engine power is submitted by the vehicle manufacturer or hisauthorized representative.
1.1.1. It must be accompanied by three copies of the document mentioned
below and of the following:
1.1.1.1. Information sheet duly completed,
1.1.1.2. Information required in Appendix 1 or 2.
1.1.2. If the technical service responsible for the type-approval tests carries
out the tests itself, a vehicle representative of the vehicle type to beapproved must be provided.
1.2. Documents
Where an application within the meaning of 1.1 is accepted, the
competent authority must prepare the document, the model for which
is contained in Annex II. In order to draw up this document, the
competent authority of the Member State conducting the EECtype-approval tests may use the report prepared by an approved orrecognized laboratory pursuant to the provisions of this Directive.
2. SCOPE
2.1. This method applies to internal-combustion engines used for the
propulsion of category M and N vehicles as defined in Annex I to
Directive 70/156/EEC, belonging to either of the following types.
2.1.1. Internal-combustion piston engines (positive ignition or compression
ignition), excluding free-piston engines;
2.1.2. Rotary-piston engines.
2.2. This method applies to naturally aspirated or supercharged engines.
3. DEFINITIONS
For the purposes of this Directive,
3.1. ‘Net power’ means the power obtained on the test-bed at the end of the
crankshaft or its equivalent at the corresponding engine speed with the
auxiliaries listed in Table 1. If the power measurement can be carried
out with a mounted gearbox only, the efficiency of the gearbox is to betaken into account.
3.2. ‘Maximum net power’ means the maximum value of the net power
measured at full engine load.
3.3. ‘Standard-production equipment’ means equipment provided by the
manufacturer for a particular application.
4. ACCURACY OF THE MEASUREMENTS OF FULL LOAD POWER
4.1. Torque: ± 1 % of measured torque (
1).
4.2. Engine speed
The measurement must be accurate to within ± 0,5 %. Engine speed
must be measured preferably with an automatically synchronizedrevolution counter and chronometer (or counter-timer).!
M1
(1) The torque measuring system shall be calibrated to take friction losses into account. The
accuracy in the lower half of the measuring range of the dynamometer bench may be ± 2
% of measured torque.1980L1269 — EN — 25.07.1989 — 002.001 — 4
4.3. Fuel consumption: ± 1 % of measured consumption.
4.4. Fuel temperature: ±2K .
4.5. Engine inlet air temperature: ±2K .
4.6. Barometric pressure: ± 100 Pa.
4.7. Pressure in inlet manifold: ± 50 Pa (see note 1a to Table 1).
4.8. "C1 Pressure in vehicle exhaust pipe: ± 200 Pa 3(see note 1b to
Table 1).
5. TEST FOR MEASURING NET ENGINE POWER
5.1. Auxiliaries
5.1.1. Auxiliary equipment to be fitted
During the test, the auxiliary equipment necessary for the engine
operation in the intended application (as listed in Table 1) shall be
installed on the test bench as far as possible in the same position as theintended application.
5.1.2. Auxiliary equipment to be removed
Certain vehicle accessories necessary only for the operation of the
vehicle and which may be mounted on the engine shall be removed for
the test.
The following non-exhaustive list is given as a sample:
— air compressor for brakes,
— power-steering compressor,— suspension compressor,— air-conditioning system.
Where accessories cannot be removed, the power absorbed by them in
the unloaded condition may be determined and added to the measuredengine power.!
M11980L1269 — EN — 25.07.1989 — 002.001 — 5
TABLE 1
Auxiliary equipment to be included for the test to determine net power of engine
No Auxiliary equipment Fitted for net power test
1 Intake system
Intake manifold
Y es, standard-production equipmentAir filter (1a)
Intake silencer (1a)
Crankcase emission control system9
>>>>=
>>>>;
Speed-limiting device (1a)
2 Induction-heating device of intake manifold Y es, standard-production equipment (if
possible it shall be set in the most
favourable position)
3 Exhaust system
Exhaust purifier
Y es, standard-production equipmentExhaust manifold
Connecting pipes (1b)
Silencer (1b)
Tail pipe (1b)
Exhaust brake (2)9
>>>>>>>>=
>>>>>>>>;
Supercharging device
4 Fuel supply pump (
3) Y es, standard-production equipment
5 Carburettor
Electronic control system, air flow meter etc. (if
fitted)o
Y es, standard-production equipment
Pressure reducer
Equipment for gas engines Evaporator9
=
;Mixer
6 Fuel-injection equipment (petrol and diesel)
Prefilter
Y es, standard-production equipmentFilter
Pump
High-pressure pipe
Injector
Air intake valve, if fitted (4)
Electronic control system, air flow meter etc. (if
fitted)
Governor/control system9
>>>>>>>>>>>>>>>>=
>>>>>>>>>>>>>>>>; Automatic full-load stop for the control rack
depending on atmospheric conditions
7 Liquid-cooling equipment
Engine bonnetNoo
Bonnet air outlet
Radiator
Y es, standard-production equipment (
5)Fan (5)(6)
Fan cowl
Water pump9
>>>>=
>>>>;
Thermostat (7)
8 Air cooling
Cowl
Y es, standard-production equipment Blower (5)(6)9
=
;Temperature-regulating device
9 Electrical equipment Y es, standard-production equipment (8)!M11980L1269 — EN — 25.07.1989 — 002.001 — 6
No Auxiliary equipment Fitted for net power test
10 Supercharging equipment (if fitted)
Compressor driven either directly by the engine
and/or by the exhaust gases
Y es, standard-production equipment Charge air cooler (9)
Coolant pump or fan (engine-driven)9
>>>>=
>>>>;Coolant flow control device (if fitted)
11 Auxiliary test-bench fan Y es, if necessary
12 Anti-pollution device (10) Y es, standard-production equipment
(1a)The complete intake system shall be fitted as provided for the intended application:
where there is a risk of an appreciable effect on the engine power; in the case of two-stroke and positive-ignition
engines; when the manufacturer requests that this should be done. In other cases, an equivalent system may be used anda check should be made to ascertain that the intake pressure does not differ by more than 100 Pa from the limit specifiedby the manufacturer for a clean air filter.
(1b)The complete exhaust system shall be fitted as provided for the intended application:
where there is a risk of an appreciable effect on the engine power; in the case of two-stroke and positive-ignition
engines; when the manufacturer requests that this should be done.
In other cases an equivalent system may be installed provided the pressure measured at the exit of the engine exhaust
system does not differ by more than 1 000 Pa from that specified by the manufacturer. The exit of the engine exhaustsystem is defined as a point 150 mm downstream from the termination of the part of the exhaust system mounted on theengine.
(2)If an exhaust brake is incorporated in the engine, the throttle valve must be fixed in the fully open position.
(3)The fuel feed pressure may be adjusted, if necessary, to reproduce the pressures existing in the particular engineapplication (particularly when a ‘fuel return’ system is used).
(4)The air intake valve is the control valve for the pneumatic governor of the injection pump. The governor or thefuel-injection equipment may contain other devices which may affect the amount of injected fuel.
(5)The radiator, the fan, the fan cowl, the water pump and the thermostat shall be located on the test bench in the samerelative positions as on the vehicle. The cooling-liquid circulation shall be operated by the engine water pump only.Cooling of the liquid may be produced either by the engine radiator or by an external circuit, provided that the pressureloss of this circuit and the pressure at the pump inlet remain substantially the same as those of the engine cooling system.The radiator shutter, if incorporated, shall be in the open position. Where the fan, radiator and cowl system cannotconveniently be fitted to the engine, the power absorbed by the fan when separately moutned in its correct position inrelation to the radiator and cowl (if used), shall be determined at the speeds corresponding to the engine speeds used formeasurement of the engine power either by calculation from standard characteristics or by practical tests. This power,corrected to the standard atmospheric conditions defined in 6.2, should be deducted from the corrected power.
(6)Where a disconnectable or progressive fan or blower is incorporated, the test shall be made with the disconnectable fan(or blower) disconnected or with the progressive fan or blower running at maximum slip.
(7)The thermostat may be fixed in the fully open position.
(8)Minimum power of the generator: the power of the generator shall be limited to that necessary for the operation ofaccessories which are indispensable for the operation of the engine. If the connection of a battery is necessary, a fullycharged battery in good order must be used.
(9)Charge air-cooled engines shall be tested with charge air cooling, whether liquid or air cooled, but if the manufacturerprefers, a test-bench system may replace the air-cooled cooler. In either case, the measurement of power at each speedshall be made with the same pressure drop and temperature drop of the engine air across the charge air-cooler on thetest-bench system as those specified by the manufacturer for the system on the complete vehicle.
(10)They may include, for example, Exhaust-gas recirculation (EGR)-system, catalytic converter, thermal reactor, secondaryair-supply system and fuel evaporation protecting system.
5.1.3. Compression-ignition engine starting auxiliaries
For the auxiliary equipment used in starting compression-ignition
engines, the two following cases shall be considered:
(a) Electrical starting: The generator is fitted and supplies, where
necessary, the auxiliary equipment indispensable to the operation
of the engine.
(b) Starting other than electrical: If there are any electrically operated
accessories indispensable to the operation of the engine, thegenerator is fitted to supply these accessories. Otherwise it isremoved.
In either case, the system for producing and accumulating the energy
necessary for starting is fitted and operates in the unloaded condition.!
M11980L1269 — EN — 25.07.1989 — 002.001 — 7
5.2. Setting conditions
The setting conditions for the test to determine the net power are
indicated in Table 2.
TABLE 2
Setting conditions
1 Setting of carburettor(s)
Set in accordance with the manufac-
turer’ s production specifications andused without further alteration for the
particular application2 Setting of injection-pump delivery system
3 Ignition or injection timing (timing curve)
49
>>>>>>>>>=
>>>>>>>>>;Governor setting
5 Anti-pollution devices
5.3. Test conditions
5.3.1. The net power test shall consist of a run at full throttle for
positive-ignition engines and at fixed full load fuel-injection-pump
setting for compression-ignition engines, the engine being equipped as
specified in Table 1.
5.3.2. Performance data shall be obtained under stabilized operating
conditions, with an adequate fresh-air supply to the engine. Theengine must have been run-in in accordance with the manufacturer’srecommendations. Combustion chambers may contain deposits, but in
limited quantity.
Testconditions such as inlet air temperature shall be selected as near to
reference conditions (see 6.2) as possible in order to minimize themagnitude of the correction factor.
5.3.3. The temperature of the inlet air to the engine (ambient air) shall be
measured within 0,15 m upstream of the point of entry of the aircleaner, or, if no air cleaner is used, within 0,15 m to the air inlet horn.
The thermometer or thermocouple shall be shielded from radiant heat
and placed directly in the air stream. It shall also be shielded from fuelspray-back. A sufficient number of locations shall be used to give arepresentative average inlet temperature.
5.3.4. No data shall be taken until torque, speed and temperatures have been
maintained substantially constant for at least one minute.
5.3.5. The engine speed during a run or reading shall not deviate from the
selected speed by more than ± 1 % or ± 10 min
−1, whichever is greater.
5.3.6. Observed brake load, fuel consumption and inlet air temperature data
shall be taken simultaneously and shall be the average of two stabilizedconsecutive values which do not vary more than 2 % for the brake load
and fuel consumption.
5.3.7. The temperature of the coolant at the outlet from the engine shall be
kept within ± 5 K from the upper thermostatically controlled
temperature specified by the manufacturer. If no temperature isspecified by the manufacturer, the temperature shall be 353 K ± 5 K.
For air-cooled engines, the temperature at a point indicated by the
manufacturer shall be kept within + 0/− 20 K of the maximum value
specified by the manufacturer in the reference conditions.
5.3.8. The fuel temperature shall be measured at the inlet to the carburettor or
at the fuel-injection system and maintained within the limits
established by the engine manufacturer.
5.3.9. The temperature of the lubricating oil measured in the oil sump or at
the outlet from the oil cooler, if fitted, shall be maintained within thelimits established by the engine manufacturer.
5.3.10. An auxiliary regulating system may be used if necessary to maintain
the temperature within the limits specified in 5.3.7, 5.3.8 and 5.3.9.!
M11980L1269 — EN — 25.07.1989 — 002.001 — 8
5.3.11. Fuel
The fuel shall be one available on the market without any
supplementary smoke suppressant additives. In any case of dispute,
the reference fuel shall be:
(a) for positive-ignition engines as defined by Annex VI, paragraph 1,
and
(b) for compression-ignition engines, as defined by Annex VI,
paragraph 2
of Council Directive 70/220/EEC of 20 March 1970 on the
approximation of the laws of the Member States relating to measures
to be taken against air pollution by gases from motor vehicles (1), as
last amended by Directive 83/351/EEC (2).
As an alternative, instead of the above reference fuels, reference fuels
as defined by CEC (3) as CEC-RF-08-A-85 (positive-ignition engines
for operation on unleaded fuel) or CEC-RF-03-A-84 (compression-ignition engines) may also be used at the discretion of themanufacturer.
5.4. Test procedure
Measurements shall be taken at a sufficient number of engine speeds to
define correctly the power curve completely between the lowest andthe highest engine speeds recommended by the manufacturer. Thisrange of speeds shall include the speed of revolution at which the
engine produces its maximum power. For each speed, the average of at
least two stabilized measurements is to be determined.
5.5. Measurement of smoke index
In the case of compression-ignition engines, the exhaust gases shall be
examined during the test for compliance with the conditions set out in
Annex VI to Council Directive 72/306/EEC (
4).
5.6. Data to be recorded
Data to be recorded are those indicated in Appendix I.
6. POWER CORRECTION FACTORS
6.1. Definition
The power correction factor is the coefficient to determine the engine
power under the atmospheric reference conditions specified in 6.2:
Po=α.P
where
Pois the corrected power (i.e. power under reference atmospheric
conditions);
αis the correction factor ( αaorαd);
P is the measured power (test power).
6.2. Reference atmospheric conditions
6.2.1. Temperature (To): 298 K (25 °C)
6.2.2. Dry pressure (Pso): 99 kPa
Note: The dry pressure is based on a total pressure of 100 kPa and a
water vapour pressure of 1 kPa.
6.3. Test atmospheric conditions
The atmospheric conditions during the test shall be the following:
6.3.1. Temperature (T)
For positive-ignition engines 288 K 4T4308 K!M1
(1) OJ No L 76, 6. 4. 1970, p. 1.
(2) OJ No L 197, 20. 7. 1983, p. 1.
(3) European Coordinating Council for the Development of Performance Tests for
Lubricants and Engine Fuels.
(4) OJ No L 190, 20. 8. 1972, p. 1.1980L1269 — EN — 25.07.1989 — 002.001 — 9
For compression-ignition engines 283 K 4T4313 K.
6.3.2. Pressure (P s)
80 kPa 4ps4110 kPa.
6.4. Determination of correction factors αaandαd(1)
6.4.1. Naturally aspirated or supercharged positive-ignition engine — Factor
αa:
αa¼99
Ps/C16/C171;2
:T
298/C0/C10;6(2)
where
T is the absolute temperature in Kelvins (K) of the air drawn in by the
engine;
Psis the total dry atmospheric pressure in kilopascals (kPa), that is, the
total barometric pressure minus water vapour pressure.
Conditions to be complied with in the laboratory.
For a test to be valid, the correction factor αamust be such that:
0,934αa41,07
If these limits are exceeded, the correct value obtained shall be given
and the test conditions (temperature and pressure) precisely stated in
the test report.
6.4.2. Compression-ignition engine — Factor αd
The power correction factor ( αd) for compression-ignition engines at
constant fuel rate is obtained by applying the formula:
αd=( f a)fm
wheref
ais the atmospheric factor;
fmis the characteristic parameter for each type of engine and
adjustment.
6.4.2.1. Atmospheric factor f a
This factor indicates the effects of environmental conditions (pressure,
temperature and humidity) on the air drawn in by the engine.
The atmospheric factor formula differs according to the type of engine.
6.4.2.1.1. Naturally aspirated and mechanically supercharged engines.
fa¼99
Ps/C16/C17
:T
298/C0/C10;7
6.4.2.1.2. Turbocharged engines with or without cooling of inlet air.
fa¼99
Ps/C16/C170;7
:T
298/C0/C11;5
6.4.2.2. Engine factor f m
fmis a function of q c(fuel flow corrected) as follows:
fm= 0,036.qc− 1,14
where
qc= q/r
where
q is the fuel flow in milligramms per cycle per litre of total swept
volume (mg/(litre.cycle)).
r is the pressure ratio of compressor outlet and compressor inlet (r = 1
for naturally aspirated engines).
This formula is valid for a value interval of q cincluded between 40
mg/(litre.cycle) and 65 mg/(litre.cycle).
For q cvalues lower than 40 mg/(litre.cycle), a constant value of f m
equal to 0,3 (fm= 0,3) will be taken.!M1
(1) The tests may be carried out in air-conditioned test rooms where the atmospheric
conditions may be controlled.
(2) In the case of engines fitted with automatic air temperature control, if the device is such
that at full load at 25 °C no heated air is added, the test shall be carried out with thedevice fully closed. If the device is still operating at 25 °C then the test is made with the
device operating normally and the exponent of the temperature term in the correction
factor shall be taken as zero (no temperature correction).1980L1269 — EN — 25.07.1989 — 002.001 — 10
For q cvalues higher than 65 mg/(litre.cycle), a constant value of f m
equal to 1,2 (fm= 1,2) will be taken (see figure):
6.4.2.3. Conditions to be complied with in the laboratory.
For a test to be valid, the correction factor αdmust be such that
0,94αd41,1
If these limits are exceeded, the corrected value obtained shall be given
and the test conditions (temperature and pressure) precisely stated in
the test report.
7. TEST REPORT
The test report shall contain the results and all the calculations required
to find the net power, as listed in Annex II, together with thecharacteristics of the engine listed in Appendix I or Appendix 2 to this
Annex.
8. EXTENSION OF EEC TYPE APPROV AL
8.1. V ehicle types modified to run on unleaded petrol
8.1.1. Subject to the approval of the authority granting type approval,
approval of a vehicle type modified and/or adjusted solely for the
purpose of making it capable of running on unleaded petrol, asspecified in Directive 85/210/EEC, shall be extended under thefollowing alternative conditions:
8.1.1.1. The manufacturer shall certify that the engine power of the modified
vehicle shall remain within the limits for conformity of production, asspecified in 9.2 as obtained with the original, unmodified, typeapproved vehicle. In this case the extension shall confirm the power of
the original type approval, or
8.1.1.2. The manufacturer shall declare a revised engine power figure which is
less than that obtained with the original, unmodified type approvedvehicle. In this case the extension shall specify the newly declaredfigures as applicable to the modified vehicle type.
8.2. V ehicle types modified for any other purpose
Any other modification of the engine with regard to the characteristics
listed in Appendix 1 or Apendix 2 to this Annex shall be reported tothe competent authority. That authority may then either:
8.2.1. consider that the modifications made are not likely to have any
substantial effect on the power of the engine, or
8.2.2. request a further determination of engine power through the carrying-
out of such tests as are deemed necessary.!
M1
!M21980L1269 — EN — 25.07.1989 — 002.001 — 11
9. TOLERANCES FOR MEASURING THE NET POWER
9.1. The net power indicated by the manufacturer for the type of engine
shall be accepted if it does not differ by more than ± 2 % for maximumpower and more than ± 4 % at, the other measurement points on thecurve with a tolerance of ± 1,5 % for engine speed, from the values
measured by the technical service on the engine submitted for testing.
9.2. During the tests to verify conformity of production the power shall be
measured at two engine speeds S1 and S2 corresponding respectively
to the measurement points of maximum power and maximum torqueaccepted for type approval. At these two engine speeds, which aresubject to a tolerance of ± 5 %, the net power measured at at least one
point within the ranges S1 ± 5 % and S2 ± 5 % shall not differ by more
than ± 5 % from the approval figure.!
M21980L1269 — EN — 25.07.1989 — 002.001 — 12
Appendix 1
!B1980L1269 — EN — 25.07.1989 — 002.001 — 13
!B1980L1269 — EN — 25.07.1989 — 002.001 — 14
!B1980L1269 — EN — 25.07.1989 — 002.001 — 15
!B1980L1269 — EN — 25.07.1989 — 002.001 — 16
Appendix 2
!B1980L1269 — EN — 25.07.1989 — 002.001 — 17
!B1980L1269 — EN — 25.07.1989 — 002.001 — 18
!B1980L1269 — EN — 25.07.1989 — 002.001 — 19
!B1980L1269 — EN — 25.07.1989 — 002.001 — 20
ANNEX II
!B1980L1269 — EN — 25.07.1989 — 002.001 — 21
!B1980L1269 — EN — 25.07.1989 — 002.001 — 22
!B1980L1269 — EN — 25.07.1989 — 002.001 — 23
!B1980L1269 — EN — 25.07.1989 — 002.001 — 24