Source: https://www.chinesestandard.net/PDF.aspx/GB18352.5-2013
Timestamp: 2020-08-05 08:41:56
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Standard ID GB 18352.5-2013 (GB18352.5-2013)
Description (Translated English) Limits and measurement methods for emissions form light-duty vehicles (CHINA 5)
Classification of Chinese Standard Z64
Classification of International Standard 13.040.50
Word Count Estimation 181,166
Date of Implementation 2018-01-01
Older Standard (superseded by this standard) GB 18352.3-2005
Quoted Standard GB 1495; GB 3847-2005; GB 7258; GB/T 15089-2001; GB 17691-2005; GB 18285; GB/T 19001-2008; GB/T 19755; HJ/T 390; HJ 509; ISO 2575-1982; ISO 8422-1991; ISO 9141-2; ISO 14230-4; ISO 15031-3; ISO 15031-4; ISO 15031-5; ISO 15031-6; ISO 15031-7; ISO 15765-4; E
Adopted Standard (EC) No 715/2007, MOD; (EC) No 692/2008, MOD; ECE R83-2006(2011), MOD
Drafting Organization China Automotive Technology and Research Center
Regulation (derived from) Natural Resources Department Announcement No. 7 of 2019
Summary This standard specifies the emission limits and measurement methods of exhaust pollutants, double idle exhaust pollutants, crankcase pollutants, evaporative pollutants at normal temperature and low temperature, and durability of pollution control devices. Technical requirements and measurement methods for on-board diagnostic (OBD) systems (referred to as OBD systems). This standard specifies the emission limits of exhaust gas, free-accelerated smoke emission and measurement methods, durability of pollution control devices, technical requirements and measurement methods of OBD systems for light-duty vehicles equipped with compression-ignition engines. This standard specifies the requirements for light vehicle type approval, production consistency and compliance check and determination methods. This standard also specifies the special requirements for burning liquefied petroleum gas (LPG) or natural gas (NG) light vehicles. this
ENGLISH: GB 18352.5-2013 (Translated)
ICS 13.040.50
Replacing GB18352.3-2005
Limits and measurement methods for
(CHINA 5)
轻型汽车污染物排放限值及测量方法
(中国第五阶段)
ISSUED ON: SEPTEMBER 17, 2013
IMPLEMENTED ON: JANUARY 01, 2018
Issued by: Ministry of Environmental Protection of the PRC;
and Quarantine of the PRC.
1 Scope of application ... 7
4 Type-approval application and approval ... 15
5 Specifications and tests ... 16
6 Extensions to type approvals ... 27
7 Conformity of production ... 31
8 In-service conformity ... 36
9 Implementation of the standard ... 37
Annex A (Normative) Information on application for type approval ... 39
Annex B (Informative) Format of type-approval certificate (Maximum size: A4
(210 × 297 mm)) ... 58
Annex C (Normative) Test of exhaust emissions after a cold start at normal
temperature (Type I test) ... 65
Annex D (Normative) Two-speed idle test or free acceleration smoke test
(Type II test) ... 143
Annex E (Normative) Test of crankcase emissions (Type III test) ... 147
Annex F (Normative) Test of evaporative emissions (Type IV test) ... 150
Annex G (Normative) Durability test of pollution control devices (Type V test)
Annex H (Normative) Emission test of CO and THC in the exhaust after a cold
start at low temperature (Type VI test) ... 187
Annex I (Normative) Onboard diagnostic (OBD) system ... 194
Annex J (Normative) Specifications of reference fuels ... 220
Annex K (Normative) Special requirements for a vehicle fuelled by LPG or NG
Annex L (Normative) Type-approval of replacement pollution control device as
separate technical unit ... 229
Annex M (Normative) Requirements for ensuring conformity of production . 243
Annex N (Normative) In-service conformity ... 250
Annex O (Normative) Technical requirements for vehicles that use a reagent
for the exhaust after-treatment system ... 269
Annex P (Normative) Emissions test procedure for a vehicle equipped with a
periodically regenerating system ... 274
For the purpose of implementing the Environmental Protection Law of the
People's Republic of China and the Law of the People's Republic of China on
the Prevention and Control of Atmospheric Pollution, this Standard is
established to prevent and control the environmental pollution by exhaust
pollutants from motor vehicles and to improve ambient air quality.
This Standard specifies the requirements for type approval of the emissions
from light-duty vehicles in the Stage V, check and verification methods of
conformity of production and in-service conformity.
This Standard is modified in relation to the technical content contained in the
REGULATION (EC) No 715/2007 OF THE EUROPEAN PARLIAMENT AND
OF THE COUNCIL on type approval of motor vehicles with respect to
emissions from light passenger and commercial vehicles (Euro 5 and Euro 6)
and on access to vehicle repair and maintenance information, COMMISSION
REGULATION (EC) No 692/2008 implementing and amending Regulation (EC)
No 715/2007 of the European Parliament and of the Council on type-approval
of motor vehicles with respect to emissions from light passenger and
commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and
maintenance information, and ECE R83-06 (2011) Uniform provisions
concerning the approval of vehicles with regard to the emission of pollutants
according to engine fuel requirements as well as their amendments.
The following significant changes have been made in this Standard to the
above EU directives:
- The definition and category of light-duty vehicles follow the requirements in
GB 18352.3-2005;
- REVISE the previous Type II test and smoke test.
- ADD the test requirements for effective volume and initial working capacity
of canister;
- ADD the test requirements for substrate volume and precious metal
content of catalytic converter;
- REVISE and adopt the related requirements for access to the OBD system
and vehicle maintenance/repair information;
- REVISE the method of verifying the conformity of production; ADD the
requirements for checking conformity of production of carbon canister and
- ADD the requirements for checking evaporative emissions with regard to
in-service conformity;
- Exclude the test requirements for flexible fuel vehicles and biodiesel
vehicles, etc.;
- The technical requirements for test fuels.
This Standard specifies the requirements for type-approval of the emissions
Compared with the Stage IV, the significant changes are as follows:
- The application scope of the standard extends to the vehicles with
reference mass of not exceeding 2610 kg and specifies that the light-duty
hybrid electric vehicles shall comply with the requirements of this
- Improve the emission control requirements of Type I test; REVISE the
measurement method of particulate matter mass and add the
measurement requirements of particle numbers;
- Categorize the two-speed idle test of positive ignition vehicles and free
acceleration smoke test of compression ignition vehicles as the Type II
- Improve the distance requirements for durability in Type V test; ADD the
standard road cycle and bench ageing test method for positive ignition
- REVISE the requirements for monitoring items and limit values of the OBD
system and the onboard diagnostic techniques of bi-fuel vehicles;
- REVISE the related requirements for access to the OBD system and
vehicle maintenance/repair information;
- REVISE the related requirements for in-service conformity check; ADD the
requirements of checking OBD system and evaporative emissions;
- ADD the technical requirements for vehicles that use a reagent for the
exhaust after-treatment system;
- ADD the procedure for emission test of vehicles equipped with periodically
regenerating systems;
- REVISE the technical requirements for test fuels.
Annexes A, C, D, E, F, G, H, I, J, K, L, M, N, O, and P in this Standard are
Normative Annexes, while Annex B is an Informative Annex.
This Standard was organized and formulated by the Department of Science,
Technology and Standards of Ministry of Environmental Protection.
This Standard was drafted by Chinese Automotive Technology and Research
Center and Chinese Research Academy of Environmental Sciences.
This Standard was approved by the Ministry of Environmental Protection on
From the issuance date of this Standard, this Standard can be deemed as the
basis for type approval. From the date of January 1, 2018, all light-duty
vehicles sold and registered shall comply with the requirements in the
From the date of January 1, 2018, this Standard replaces Limits and
measurement methods for emissions from light-duty vehicles (CHINA III, IV)
(GB 18352.3-2005). Prior to January 1, 2023, the “In-service conformity check”
for light-duty vehicles of Stage III and IV shall follow the relevant requirements
stated in GB 18352.3-2005.
This Standard is interpreted by the Ministry of Environmental Protection.
This Standard specifies the limits and measurement methods for exhaust
emissions at normal and low ambient temperature, exhaust emissions at
two-speed idle condition, crankcase emissions, and evaporative emissions,
and technical requirements and measurement methods for the durability of
pollution control devices and onboard diagnostic (OBD) systems of light-duty
vehicles equipped with positive-ignition engines.
emissions at normal ambient temperature and free acceleration smoke, and
technical requirements and measurement methods for the durability of
pollution control devices and OBD systems of light-duty vehicles equipped with
compression-ignition engines.
This Standard specifies the requirements for type-approval of light-duty
vehicles, check and verification methods of conformity of production and
in-service conformity.
This Standard also specifies the special requirements for light-duty vehicles
fueled by LPG or NG.
This Standard also specifies the type-approval procedure for replacement
pollution control devices as separate technical units intended to be fitted on
light-duty vehicles with respect to pollutant emissions.
This Standard also stipulates the technical requirements for vehicles that use a
reagent for the exhaust after-treatment system and the procedure for emission
test of vehicles equipped with periodically regenerating systems.
This Standard applies to light-duty vehicles, including hybrid electric vehicles,
powered by positive-ignition engines or compression-ignition engines, with the
maximum design speed of being greater than or equal to 50 km/h.
At the manufacturer's request, type approval may be performed for Category
M1, M2, and N2 vehicles with the maximum mass exceeding 3500 kg and a
reference mass not exceeding 2610 kg in accordance with this Standard; as
for the vehicles type approval granted under this Standard may be extended
from vehicles mentioned above to M1, M2, N1 and N2 vehicles with a reference
mass not exceeding 2840 kg and which meet the conditions laid down in this
This Standard does not apply to the vehicles whose type had been approved in
accordance with GB 17691-2005 (China Stage V).
The following documents or contained provisions which, through reference in
this Standard, constitute provisions of this Standard. For all undated
references, the valid edition applies to this Standard.
GB 1495 Limits and measurement methods for noise emitted by
accelerating motor vehicles
GB 3847-2005 Limits and measurement methods for exhaust smoke from
C.I.E. (Compression Ignition Engine) and vehicle equipped
with C.I.E.
GB 7258 Safety specifications for power-driven vehicles operating on
15089-2001
Classification of power-driven vehicles and trailers
17691-2005
Limits and measurement methods for exhaust pollutants from
compression ignition and gas fuelled positive ignition engines
of vehicles (III, IV, V)
GB 18285 Limits and measurement methods for exhaust pollutants from
vehicles equipped ignition engine under two-speed idle
conditions and simple driving mode conditions
19001-2008
GB/T 19755 Measurement methods for emissions from light-duty hybrid
HJ/T 390 Technical Requirement for Environmental Protection Product
- Control System of Fuel Evaporative Pollutants from Vehicle
HJ 509 Determination of Platinum, Palladium and Rhodium loading in
the vehicle-used ceramic catalytic converters Inductive
Coupled Plasma-Optical Emission Spectrometry and
Inductive Coupled Plasma-Mass Spectrometry
2575-1982
8422-1991
ISO 9141-2 Road vehicles - Diagnostic systems - Part 2: CARB
requirements for interchange of digital information
ISO 14230-4 Road vehicles - Diagnostic systems - Keyword Protocol 2000
- Part 4: Requirements for emission-related systems
ISO 15031-3 Road vehicles - Communication between vehicle and
external equipment for emissions-related diagnostics - Part 3:
Diagnostic connector and related electrical circuits,
ISO 15031-4 Road vehicles - Communication between vehicle and
external equipment for emissions-related diagnostics - Part 4:
ISO 15031-5 Road vehicles - Communication between vehicle and
external equipment for emissions-related diagnostics - Part 5:
Emissions-related diagnostic services
ISO 15031-6 Road vehicles - Communication between vehicle and
external equipment for emissions-related diagnostics - Part 6:
ISO 15031-7 Road vehicles - Communication between vehicle and
external equipment for emissions-related diagnostics - Part 7:
Data link security
ISO 15765-4 Road vehicles - Diagnostics on Controller Area Network
(CAN) - Part 4: Requirements for emissions-related systems
EN 1822 High efficiency air filters (EPA, HEPA and ULPA)
SAE J1850 Class B data communications network interface
SAE J2186 E/E data link security
For the purpose of this Standard, the following terms and definitions apply.
The category M1, M2, and N1 vehicles with the maximum mass of not
exceeding 3500 kg.
Vehicle of category M1, M2, N1 and N2
According to GB/T 15089-2001,
Vehicle of category M1 refers to the passenger vehicle with no more than 9
seats, including the driver's seat.
Vehicle of category M2 refers to the passenger vehicle with more than 9 seats
including the driver's seat and whose maximum design mass does not exceed
Vehicle of category N1 refers to the goods vehicle with the maximum design
mass of not exceeding 3500 kg.
Vehicle of category N2 refers to the goods vehicle with the maximum design
mass of more than 3500 kg but not more than 12000 kg.
Vehicle of category I
The vehicle of category M1 with no more than 6 seats including the driver's
seat and whose maximum mass of not exceeding 2500 kg.
Vehicle of category II
All vehicles covered by this Standard except the vehicle of category I.
Type of motor vehicle. The same type shall not differ in the following respects:
(1) The equivalent inertia determined in accordance with the reference
mass as prescribed in C.5.2.1; and
(2) The engine and vehicle characteristics as defined in Annex A.
The vehicle that can be powered from at least the following two types of
on-vehicle stored energy:
- A consumable fuel;
- A rechargeable energy/power storage device.
The vehicle that can use both gasoline and one gaseous fuel, but not both
Mono-fuel gas vehicle
The vehicle that can only use one type of gaseous fuel (LPG or NG), or the
vehicle that can use both gaseous fuel (LPG or NG) and petrol, but may also
have a petrol system for emergency purposes or starting only, where the petrol
tank does not contain more than 15 liters of petrol.
Reference mass (RM)
The "unladen mass" of the vehicle plus 100 kg.
The technically permissible maximum mass declared by the vehicle
Equivalent inertia (I)
Mass that is equivalent to the inertia which is recorded by the inertia simulator
equipped on the chassis dynamometer during vehicle driving and moving.
The exhaust emissions of carbon monoxide (CO), oxides of nitrogen (NOX)
expressed in nitrogen dioxide (NO2) equivalent and hydrocarbons (THC and
NMHC) assuming hydrocarbon ratio of:
(a) C1H1.85 for petrol,
(b) C1H1.86 for diesel,
(c) C1H2.525 for LPG,
(d) CH4 for NG.
Components of the exhaust gas which are removed from the diluted exhaust
gas at a maximum temperature of 325 K (52 °C) by means of the filters
described in Attachment CE.
Particle numbers (PN)
The total number of particles of a diameter greater than 0.023 μm present in
the diluted exhaust gas after it has been conditioned to remove volatile
material, as described in Attachment CF.
Gaseous pollutants and particulate matter emitted from vehicle exhaust pipes.
The hydrocarbon vapors lost from the fuel (petrol) system of a motor vehicle
other than those from exhaust emissions, including:
(1) "Hot soak losses" are hydrocarbon emissions arising from the fuel
system of a stationary vehicle after a period of driving, expressed as
C1H2.20 equivalent.
(2) "Tank breathing losses" are hydrocarbon emissions caused by
temperature changes in the fuel tank, expressed as C1H2.33 equivalent.
The spaces in or external to an engine which are connected to the oil sump by
internal or external ducts through which gases and vapor can escape.
The device that temporarily enriches the air/fuel mixture of the engine thus
assisting the engine to start.
The device which assists engine start up without enrichment of the air/fuel
mixture of the engine, e.g. glow plug, injection timing change, etc.
The nominal engine swept volume for reciprocating piston engines; twice the
nominal swept volume for rotary piston engines.
Components of a vehicle that control or limit exhaust or evaporative emissions.
Onboard diagnostic (OBD) system for emission control, referred to as OBD
system. It shall have the function of identifying areas where a malfunction may
exist and storing this information in the memory of the electronic control unit by
means of malfunction code.
The availability of all vehicle OBD and vehicle repair and maintenance
information, required for the inspection, diagnosis, servicing or repair of the
A visible or audible indicator that clearly informs the driver of the vehicle in the
event of a malfunction of any emission-related component connected to the
OBD system, or of the OBD system itself.
Lack of combustion in the cylinder of a positive ignition engine due to absence
of spark, poor fuel metering, poor compression or any other cause.
Any element of design which measures or senses vehicle speed, engine
rotational speed, transmission gear, temperature, air inlet manifold vacuum or
any other parameter for the purpose of activating, to activate, modulate, delay,
or deactivate the operation of any part or the function of the emission control
system, so that the effectiveness of the emission control system is reduced
under conditions which may reasonably be expected to be encountered in
normal vehicle operation and use.
Such an element of design may not be considered as a defeat device:
(1) The device required for protecting the engine against damage or
accident and for safe operation of the vehicle; or
(2) The device that functions only when the engine is started;
(3) The device that does work in Type I or IV tests.
Properly maintained and used
"Properly maintained and used" means, for the purpose of a test vehicle, that
such a vehicle satisfies the criteria for acceptance of a selected vehicle laid
down in NA.2.
Any product other than fuel that is stored on the vehicle and is provided to the
exhaust after-treatment system upon request of the emission control system.
Periodically regenerating system
A pollution control device (e.g. catalytic converter, particulate trap) that
requires a periodical regeneration process in less than 4000 km of normal
During cycles where regeneration occurs, emission standards can be
exceeded. If a regeneration of a pollution control device occurs at least once
per Type I test and that has already regenerated at least once during vehicle
preparation cycle, it will be considered as a continuously regenerating system
and not suitable for the test procedures for periodically regenerating system
specified in Annex P.
If the manufacturer provides data to the type-approval authority that, during
cycles where regeneration occurs, emissions remain below the standards
given in 5.1.3.4, at the request of the manufacturer, after agreement of the
testing organization, the test procedure specific to periodically regenerating
systems will not apply to a regenerative system.
The type of fuel normally used by the engine:
- LPG (liquefied petroleum gas),
- NG (natural gas),
- Both petrol and LPG,
- Both petrol and NG,
Wherein, liquid fuel refers to petrol or diesel, while gaseous fuel refers to LPG
or NG.
4 Type-approval application and approval
4.1 Application for type-approval
4.1.1 Vehicle manufacturer engaged in manufacturing and selling vehicles
shall apply for and obtain type-approval of vehicle emission control in China.
The application for type-approval of a vehicle type with regard to exhaust
emissions, crankcase emissions, evaporative emissions, durability of pollution
control devices, as well as to its OBD system shall be submitted by the vehicle
4.1.2 Technical documents for type-approval shall be submitted in accordance
with Annex A of this Standard. Documents of ensuring conformity of production
shall be submitted in accordance with Annex M of this Standard.
4.1.2.1 The application concerning an onboard diagnostic (OBD) system the
following information shall be attached.
(1) In the case of vehicles equipped with positive-ignition engines, in Type I
test as described in Annex C, the percentage of misfires that would
either result in emissions exceeding the limits given in Table I.1 of I.3.3.2,
or that could lead to an exhaust catalyst, or catalysts, overheating prior
to causing irreversible damage.
(2) Detailed written information fully describing the functional operation
characteristics of the OBD system, including a listing of all relevant parts
of the vehicle emission control system.
(3) A description of the malfunction indicator used by the OBD system.
(4) A declaration that the OBD system complies with the provisions of
paragraph IA.7 related to in-use performance under all reasonably
foreseeable driving conditions.
(5) A plan describing the detailed technical criteria and justification for
incrementing the numerator and denominator of each monitor that shall
fulfill the requirements of paragraphs IA.7.2 and IA.7.3, as well as for
disabling numerators, denominators and the general denominator under
the conditions outlined in paragraph IA.7.7.
(6) A description of the provisions taken to prevent tampering with and
modification of the emission control electronic control unit.
(7) If applicable, the particulars of the vehicle family as referred to in
Attachment IB.
(8) Where appropriate, copies of other type approvals accompanied by the
relevant data to enable extension of approvals.
4.1.2.2 For the tests described in paragraph I.3, a vehicle representative of the
vehicle type or vehicle family fitted with the OBD system to be approved shall
be submitted to the testing organization responsible for the type approval test.
If the testing organization determines that the submitted vehicle does not fully
represent the vehicle type or vehicle family described in Attachment IB, an
alternative and if necessary, an additional vehicle shall be submitted for test in
accordance with paragraph I.3.
4.1.3 Where appropriate, copies of other type approvals with the relevant data
to enable extensions of approvals and establishment of deterioration factors
4.1.4 For the tests described in Clause 5, a vehicle representative of the
vehicle type to be approved shall be submitted to the testing organization
responsible for the approval tests. For the type IV test, two sets of same
carbon canisters shall be provided. For the type V test, two sets of same
catalytic converters shall be provided.
4.2 Approval of type-approval
If the vehicle type submitted for approval meets the technical requirements
described in Clause 5, approval of that vehicle type shall be granted by the
approval authority, and a certificate will be issued as well. A format of
type-approval certificate is included in Annex B.
5 Specifications and tests
5.1.1 The components liable to affect the exhaust emissions, crankcase
emissions and evaporative emissions shall be so designed, constructed and
assembled as to enable the vehicle, in normal use, despite the vibration to
which they may be subjected, to comply with the provisions of this Standard.
5.1.2 The technical measures taken by the manufacturer shall be such as to
ensure that in conformity with the provisions of this Standard, exhaust
emissions, crankcase emissions, and evaporative emissions are effectively
limited throughout the normal life of the vehicle and under normal conditions of
use. This will include the security of those hoses and their joints and
connections, used within the emission control systems, which shall be so
constructed as to comply with the original design intent.
All vehicles shall be equipped with OBD systems. The design, production and
installation of such system shall ensure that the vehicle is able to recognize
and record the types of deterioration or malfunction during the life period of
These provisions are deemed to be met if the provisions of paragraph 5.3
(Type approval), Clause 7 (Conformity of production), and Clause 8 (In-service
conformity) respectively are complied with.
The use of a defeat device is prohibited.
During the normal life period, without the authorization of the type-approval
authority, any refit liable to affect emissions shall be prohibited for the technical
measures taken by the manufacturer and OBD system installed on the vehicle
5.1.3 Provisions shall be made to prevent excess evaporative emissions and
fuel spillage caused by a missing fuel filler cap. This may be achieved by using
(1) An automatically opening and closing, non-removable fuel filler cap;
(2) Design features which avoid excess evaporative emissions in the case
of a missing fuel filler cap;
(3) Any other provision which has the same effect. Examples may include,
but are not limited to, a tethered filler cap, or one utilizing the same
locking key for the filler cap as for the vehicle's ignition. In this case, the
key shall be removable from the filler cap only in the locked condition.
5.1.4 Provisions for electronic control system security
5.1.4.1 Any vehicle with an electronic control unit for emission shall include
features to deter modification, except as authorized by the manufacturer. The
manufacturer shall authorize modifications if these modifications are
necessary for the diagnosis, servicing, inspection, retrofitting or repair of the
vehicle. RECORD them in the in-service conformity materials in detail and
submit to the type-approval authority for filing. Any reprogrammable computer
codes or operating parameters shall be resistant to illegal tampering and afford
a level of protection at least as good as the provisions in ISO 15031-7, “Road
Vehicles - Communication Between Vehicle and External Equipment For
Emissions-related Diagnostics - Part 7: Data Link Security” dated October
1998 (SAE J2186 dated October 1996). Any removable calibration memory
chips shall be potted, encased in a sealed container or protected by electronic
algorithms and shall not be changeable without the use of specialized tools
and procedures. Only the functional requirements directly related to emission
calibration or vehicle security shall comply with such protection requirements.
5.1.4.2 Computer-coded engine operating parameters shall not be changeable
computer components or sealed (or soldered) computer enclosures).
5.1.4.3 In the case of mechanical fuel-injection pumps fitted to
compression-ignition engines, manufacturers shall take adequate steps to
protect the maximum fuel delivery setting from illegal tampering while a vehicle
5.1.4.4 Manufacturers may apply to the Approval Authority for an exemption to
one of these requirements for those vehicles which are unlikely to require
protection. The criteria that the Approval Authority will evaluate in considering
an exemption will include, but are not limited to, the current availability of
performance chips, the high-performance capability of the vehicle, and the
projected sales volume of the vehicle.
5.1.4.5 Manufacturers using programmable computer code systems (e.g.
Electrical Erasable Programmable Read-Only Memory, EEPROM) shall deter
unauthorized reprogramming. Manufacturers shall include enhanced tamper
protection strategies and write protection features such as requiring electronic
access to an off-site computer maintained by the manufacturer. Methods
giving an adequate level of tamper protection will be approved by the authority.
5.2 Test items of type-approval
Test items of type-approval for different vehicle types are given in Table 1.
For light-duty hybrid electric vehicles, the relevant test shall be performed as
set out in GB/T 19755.
Table 1 -- Test items of type-approval
Light-duty vehicles with positive-ignition
engine (including HEV) Light-duty vehicles with compression-ignition
engine (including HEV) Petrol-fuelled vehicle Bi-fuel vehicle
Mono-fuel gas
Type I - gaseous
pollutants Yes
Yes (both
fuels) Yes Yes
Type I - particulate
matter mass [1] Yes
Yes (petrol
only) No Yes
Type I - particle
numbers No No No Yes
Type II - two-speed
fuels) Yes No
Type II - free
acceleration smoke No No No Yes
Type III Yes Yes (petrol only) Yes No
Type IV [2] Yes Yes (petrol only) No No
Type V [3] Yes Yes (petrol only) Yes Yes
Type VI Yes Yes (petrol only) No No [3]
OBD system Yes Yes Yes Yes
[1] For the light-duty vehicles with positive-ignition engine, the measurement of particulate
matter mass shall apply to the vehicles equipped with direct injection positive ignition
[2] The carbon canister shall be tested in accordance with the requirements specified in
point 5.3.4.2 before Type IV.
[3] The catalytic converter shall be tested in accordance with the requirements specified in
point 5.3.5.1.1 before Type V.
[3] The relevant information required in point 5.3.6.5 shall be submitted.
Type I test: Emission test of exhaust emissions after a cold start at normal
Type II test: For vehicles equipped with positive-ignition engine, determine
CO, THC at two-speed idle and λ value (excess air coefficient) at high idling
speed; for vehicles equipped with compression-ignition engines, determine
the free acceleration smoke.
Type III test: Test of crankcase emissions
Type IV test: Test of evaporative emissions
Type V test: Durability test of pollution control devices
Type VI test: Emission test of CO and THC in the exhaust after a cold start
5.3 Test description and requirement
5.3.1 Type I test (Emission test of exhaust emissions after a cold start at
normal temperature)
5.3.1.1 This test shall be carried out on all vehicles.
5.3.1.2 The vehicle is placed on a chassis dynamometer equipped with a
means of load and inertia simulation. Refer to Annex C for operating cycle,
exhaust-gas sampling and analysis method, particulate matter sampling and
weighing method. Figure 1 illustrates the flow chart for Type I test approval.
5.3.1.2.1 A test lasting a total of 19 minutes and 40 seconds, made up of two
parts, 1 and 2, is performed without interruption. An unsampled period of not
more than 20 seconds may, with the agreement of the manufacturer, be
introduced between the end of Part 1 and the beginning of Part 2 in order to
facilitate adjustment of the test equipment.
5.3.1.2.2 Part 1 of the test is made up of 4 elementary urban cycles. Each
elementary urban cycle comprises 15 phases (idling, acceleration, steady
speed, deceleration, etc.).
5.3.1.2.3 Part 2 of the test is made up of 1 extra-urban cycle. The extra-urban
cycle comprises 13 phases (idling, acceleration, steady speed, deceleration,
5.3.1.2.4 During the test, the exhaust gases are diluted and a proportional
sample collected in one or more bags. The exhaust gases are analyzed after
operating cycle completes and the total volume of the diluted exhaust is
5.3.1.3 Test results shall be recorded on the pollutant emissions specified in
Table 2 and CO2.
5.3.1.4 The test shall be repeated three times. The results are corrected by the
appropriate deterioration factors obtained from paragraph 5.3.5 and, in the
case of vehicles with periodically regenerating systems, also shall be multiplied
by the factors Ki obtained from Annex P. The resulting masses of exhaust
emissions obtained in each test shall be less than the limits shown in the Table
Table 2 -- Emission limits for Type I test
5.3.1.4.1 Notwithstanding the requirements of paragraph 5.3.1.4, for each
pollutant, one of the three resulting masses obtained may exceed, by not more
than 1.1 times the limit prescribed, provided the arithmetical mean of the three
results is below the prescribed limit. Where the prescribed limits are exceeded
for more than one pollutant, it is immaterial whether this occurs in the same
test or in different tests.
5.3.1.5 The number of tests prescribed in paragraph 5.3.1.4 may be reduced in
the conditions (See Figure 1) hereinafter defined, where V1 is the result of the
first test and V2 the result of the second test.
5.3.1.5.1 Only one test is performed if the result obtained for each pollutant or
for the combined emission of two pollutants subject to limitation, is less than or
equal to 0.70 L (i.e. V1 ≤ 0.70 L).
5.3.1.5.2 If the requirement of paragraph 5.3.1.5.1 is not satisfied, only two
tests are performed if, for each pollutant or for the combined emission of two
pollutants subject to limitation, the following requirements are met:
V1≤0.85 L and V1+V2≤1.70 L and V2≤L
Limits Reference
mass (RM)
(piece/km)
Note: PI = Positive Ignition, CI = Compression Ignition
(1) Apply only to vehicles with direct injection engines.
All Vehicle of category I
Figure 1 -- Flow chart for Type I test approval
5.3.2 Type II test (Two-speed idle test or free acceleration smoke test)
5.3.2.1 Two-speed idle test (determine CO, THC at two-speed idle and λ
value at high idling speed)
5.3.2.1.1 This test shall be carried out on all vehicles equipped with
positive-ignition engines.
5.3.2.1.1.1 Bi-fuel vehicles shall be tested on both fuels respectively.
5.3.2.1.1.2 Mono-fuel gas vehicle shall be tested on that gaseous fuel.
5.3.2.1.2 The manufacturer shall provide the emission values of CO, THC at
two-speed idle and the control limits of the λ value at high idling speed at the
time of type-approval.
5.3.2.1.3 Should the test results of CO, THC at two-speed idle and the λ value
at high idling speed are within the control limits provided by the manufacturer,
the manufacturer’s declared values shall be recorded, otherwise, the actual
test values shall be recorded.
5.3.2.1.4 This test shall be carried out immediately after the completion of
Type I test. The test method shall comply with Annex D.
5.3.2.2 Free acceleration smoke test
5.3.2.2.1 This test shall be carried out on all vehicles equipped with
5.3.2.2.2 This test shall be carried out immediately after the completion of Type
I test. The test method shall comply with Annex D.
5.3.2.2.3 The value obtained by the measured optical absorption coefficient
adding 0.5m-1 shall be considered as the type-approval value of free
acceleration smoke emissions of such vehicle type.
5.3.3 Type III test (Test of crankcase emissions)
5.3.3.1 This test shall be carried out on all vehicles, except those having
5.3.3.1.1 Bi-fuel vehicles shall be tested on petrol only.
5.3.3.1.2 Mono-fuel gas vehicle shall be tested on that gaseous fuel.
5.3.3.2 When tested in accordance with Annex E, the engine's crankcase
ventilation system shall not permit the emission of any of the crankcase
5.3.4 Type IV test (Test of evaporative emissions)
5.3.4.1 All vehicles equipped with positive-ignition engines shall be subject to
the test, except for mono-fuel gas vehicles. Bi-fuel vehicles shall be tested on
petrol only.
5.3.4.2 The manufacturer shall provide two sets of identical carbon canisters,
prior to the test, for alternative selection of type-approval authority to conduct
Type IV test. Another set shall be tested on its effective volume and initial
working capacity in accordance with the specifications contained in point 7.5.1.
The measured values shall be no more than 1.1 times of the value declared by
5.3.4.3 When tested in accordance with Annex F, evaporative emissions shall
be less than 2.00 g per test.
5.3.5 Type V test (Durability test of pollution control devices)
5.3.5.1 This test shall be carried out on all vehicles.
5.3.5.1.1 The manufacturer shall provide two sets of identical catalytic
converters separately, prior to the test, for alternative selection of
type-approval authority to conduct durability test. Another set shall be tested
on its substrate volume and content of each precious metal in accordance with
the specifications contained in the HJ 509. The measured values shall be no
more than 1.1 times of the value declared by the manufacturer.
5.3.5.1.2 Complete vehicle durability test. In accordance with the procedure of
Annex G, the durability test with a distance of 160000 km shall be conducted
on a chassis dynamometer or on a test track.
5.3.5.1.3 For the positive-ignition vehicles, compared with the vehicle types
that have been subject to complete vehicle durability test in accordance with
point 5.3.5.1.2, in the event that only change of pollution control device of test
vehicle exceeds the extension conditions specified in point 6.3, the
manufacturer can adopt the Standard Bench Cycle (SBC) to conduct durability
test as described in G.3.2.
5.3.5.1.4 At the request of the manufacturer, before the Type V test has been
completed, the testing organization may carry out the Type I test using the
deterioration factors in Table 3. After the Type V test completes, the testing
organization shall amend the results recorded in the type-approval certificate in
Annex B by replacing the deterioration factors in Table 3 with those measured
in accordance with the method set out in G.2.5.
Table 3 -- Deterioration factor
Engine type Deterioration factor CO THC NMHC NOX THC+NOX PM PN
Positive-ignition engine 1.5 1.3 1.3 1.6 — 1.0 —
Compression-ignition engine 1.5 — — 1.1 1.1 1.0 1.0
5.3.5.2 The deterioration factors shall be determined by the test procedure
specified in 5.3.5.1.2 and 5.3.5.1.3. The deterioration factors are used to
establish compliance of vehicle emissions with the limit requirements in 5.3.1.4
and 7.1.
5.3.6 Type VI test (Emission test of CO and THC in the exhaust after a
cold start at low temperature)
5.3.6.1 This test shall be carried out on all vehicles with positive-ignition engine,
except for mono-fuel gas vehicles. Bi-fuel vehicles shall be tested on petrol
only. For the vehicles with compression-ignition engine, the information
required in 5.3.6.5 shall be submitted.
5.3.6.2 The vehicle is placed on a chassis dynamometer equipped with a
means of load and inertia simulation. Test shall be in accordance with Part 1
operating cycle, and the method for emission sampling and analysis of Annex
5.3.6.2.1 The test consists of the four elementary urban driving cycles of Part 1
of the Type I test. The Part 1 test is described in Attachment CA and illustrated
in Figures CA.1 and CA.2 of such attachment. The test lasting a total of 780
seconds shall be carried out without interruption and start at engine cranking.
5.3.6.2.2 The test shall be carried out at an ambient test temperature of 266 K
(-7 °C). Before the test is carried out, the test vehicles shall be preconditioned
in a uniform manner to ensure that the test results may be reproducible. The
preconditioning and other test procedures are carried out as described in
5.3.6.2.3 During the test, the exhaust gases are diluted and a proportional
sample collected. The exhaust gases of the vehicle tested are diluted, sampled
and analyzed, following the procedure described in Annex H; the total volume
of the diluted exhaust is measured. The diluted exhaust gases are analyzed for
carbon monoxide (CO) and total hydrocarbons (THC).
5.3.6.3 The test shall be performed three times. The resulting mass of carbon
monoxide and hydrocarbon emission shall be less than the limits shown in the
5.3.6.3.1 Notwithstanding the requirements of paragraph 5.3.6.3, for each
pollutant, not more than one of the three results obtained may exceed the limit
prescribed by not more than 1.1 times, provided the arithmetical mean value of
the three results is below the prescribed limit. Where the prescribed limits are
exceeded for more than one pollutant, it is immaterial whether this occurs in
the same test or in different tests.
Table 4 -- Emission limits for Type VI test
Test temperature 266 K (-7 °C)
Category I — All 15.0 1.80
I RM≤1305 15.0 1.80
II 1305
5.3.6.3.2 The number of tests prescribed in paragraph 5.3.6.3 may, at the
request of the manufacturer, be increased to 10 if the arithmetical mean of the
three results is lower than 1.1 times of the limit. In this case, the requirement
after testing is only that the arithmetical mean of all 10 results shall be less
than the limit value.
5.3.6.4 The number of tests prescribed in paragraph 5.3.6.3 may be reduced if
5.3.6.4.1 Only one test is performed if the result obtained for each pollutant of
the first test is less than or equal to 0.70 L.
5.3.6.4.2 If the requirement of paragraph 5.3.6.4.1 is not satisfied, only two
tests are performed if for each pollutant the result can satisfy the following
5.3.6.5 However, for compression ignition vehicles when applying for type
approval, manufacturers shall present to the approval authority information
showing that the NOX after-treatment device reaches a sufficiently high
temperature for efficient operation within 400 seconds after a cold start at -7 °C
as described in Type VI test.
In addition, the manufacturer shall provide the approval authority with
information on the operating strategy of the exhaust gas recirculation system
(EGR), including its functioning at low temperatures.
The approval authority shall not grant type approval if it believes that the
information provided is insufficient to demonstrate that the after-treatment
device actually reaches a sufficiently high temperature for efficient operation
within the designated period of time.
5.3.7 OBD system test
5.3.7.1 This test shall be carried out on all vehicles.
5.3.7.2 While test is conducted in accordance with Attachment IA, the OBD
system shall satisfy the requirements described in Annex I.
5.3.8 Type-approval test of replacement pollution control device as
5.3.8.1 The replacement pollution control device shall be tested in accordance
with Annex L.
5.3.8.2 In the event that the requirements specified in L.4.2.1 and L.4.2.2 are
met, the replacement pollution control device shall be not tested in accordance
5.3.9 Type-approval test of vehicles fuelled by LPG or NG
The vehicles fuelled by LPG or NG shall be tested in accordance with Annex K.
5.3.10 Technical requirements for vehicles that use a reagent for the
The vehicles that use a reagent for the exhaust after-treatment system to
reduce emissions shall meet the requirements in Annex O.
5.3.11 For the vehicles of category M1, M2 and N2 with the maximum mass
exceeding 3500 kg and a reference mass not exceeding 2610 kg, the limits in
relation to Category II shall apply.
5.4 Fuels for test
Among the type approval tests, except for Type V test, all tests shall adopt the
reference fuels as described in Annex J; while the Type V test shall adopt the
commercially available fuels complying with the relevant standard
6 Extensions to type approvals
The extension of the vehicle types having been subject to type approval under
this Standard shall be performed by following the clauses below:
6.1 Extensions for exhaust emissions (Type I and Type VI tests)
6.1.1 Vehicle types with different reference masses
6.1.1.1 The type approval shall be extended only to vehicles with a reference
mass requiring the use of the neighboring larger secondary equivalent inertia
or any lower equivalent inertia.
6.1.1.2 For vehicles of category II, if the equivalent inertia required for the
reference mass of a vehicle type to be extended is less than the equivalent
inertia used in a type-approved vehicle, and the pollutant mass measured from
the type-approved vehicle is within the limits specified for the vehicle type for
which extension is requested, the extension may be approved.
6.1.2 Vehicle types with different overall transmission ratios
The type approval shall be extended to vehicles already approved with
different transmission ratios only under the following conditions.
6.1.2.1 For each of the transmission ratios used in the Type I and Type VI tests,
the proportion shall be determined:
Where, at an engine speed of 1000 r/min, V1 is the speed of the type of vehicle
approved and V2 is the speed of the vehicle type for which extension of the
6.1.2.2 If, for each transmission ratio, E ≤ 8 percent, the extension shall be
granted without repeating the Type I and Type VI tests.
6.1.2.3 If, for at least one transmission ratio, E > 8 percent, and if, for each
gear ratio, E ≤ 13 percent, the Type I and Type VI tests shall be repeated. The
tests may be performed in a laboratory chosen by the manufacturer subject to
the approval of the testing organization. The report of the tests shall be sent to
the testing organization responsible for the type approval tests.
6.1.3 Vehicles types with different reference masses and transmission
The type approval shall be extended from a vehicle type already approved to
other types with different reference masses and transmission ratios, provided
that all the conditions prescribed in paragraphs 6.1.1 and 6.1.2 are fulfilled.
6.1.4 Vehicle types with periodically regenerating systems
The type approval of a vehicle type equipped with a periodically regenerating
system can be extended to other vehicle types with periodically regenerating
systems, whose parameters described below are identical, or within the
prescribed tolerances. The extension shall only relate to measurements
specific to the defined periodically regenerating system.
6.1.4.1 Identical parameters for extending approval are:
- Combustion process;
Periodically regenerating system (i.e. catalytic converter, particulate trap):
- Construction (i.e. type of enclosure, type of precious metal, type of
substrate, cell density);
- Type and working principle;
- Reagent and additive system;
- Substrate volume ±10 percent;
- Location: Temperature variation of no more than ±50 K at the inlet of the
regenerating system, and such temperature variation shall be checked
under stabilized conditions at a speed of 120 km/h and the load setting
of Type I test; or, within ±5 percent difference of the maximum
temperature/pressure (running in Type I test).
6.1.4.2 Use of Ki factors for vehicles with different reference masses
The Ki factors are developed by the procedures in Annex P for type approval of
a vehicle type with a periodically regenerating system, which may be used by
other vehicles which meet the criteria referred to in paragraph 6.1.4.1 and have
a reference mass within the neighboring larger secondary equivalent inertia
class or any lower equivalent inertia.
6.2 Extensions for evaporative emissions (Type IV test)
6.2.1 The type approval can be extended to vehicle types equipped with a
control system for evaporative emissions which meets the following conditions:
- The basic principle of fuel/air metering (e.g. single point injection) is the
- The shape of the fuel tank and the material of the fuel tank and liquid fuel
hoses are identical.
- The worst-case vehicle with regard to the cross-paragraph and
approximate hose length shall be tested. Whether non-identical oil-gas
separators are acceptable is decided by the testing organization
responsible for the type approval tests.
- The fuel tank’s volume difference is within a range of ±10 percent.
- The setting of the fuel tank relief valve is identical.
- The method of storage of the fuel vapor is identical, i.e. form and volume of
activated carbon canister, storage medium (activated carbon), air cleaner
(if used for evaporative emission control), etc.
- The method of purging the stored vapour is identical (e.g. air flow, start
point or purge volume over the operating cycle).
- The sealing and venting method of the fuel metering system is identical.
6.2.2 The following conditions may be different for vehicle types extended
according to 6.2.1:
- Engine power;
- Automatic and manual gearboxes;
- Two and four wheel drive;
- Body style; and
- Wheel and tyre sizes.
6.3 Extensions for durability of pollution control devices (Type V test)
6.3.1 The type approval can be extended from a vehicle type already approved
to different vehicle types, provided that the vehicle, engine or pollution control
system parameters specified below are identical or remain within the
prescribed tolerances:
(a) Vehicle:
Equivalent inertia class: the neighboring larger secondary or any lower
(b) Engine:
- Number of cylinders;
- Engine capacity (±15 percent);
- Cylinder construction;
- Number and control of valves;
- Type of cooling system;
(c) Pollution control device:
(1) Catalytic converters and particulate traps:
- Number of catalytic converters, particulate traps and catalytic
- Size and shape of catalytic converters and particulate traps (volume
of substrate ±10 percent);
- Type of catalytic activity (oxidizing, three-way, lean NOx trap,
selective reduction catalyst, lean NOx catalyst or other) and catalyst
- Precious metal load (identical or higher);
- Precious metal type and ratio (±15 percent);
- Substrate (structure, material and manufacturer);
- Cell density;
- Temperature variation of no more than 50 K at the inlet of the
catalytic converter or particulate trap. This temperature variation shall
be checked under stabilized conditions at a speed of 120 km/h and
the load setting of the Type I test.
(2) Air injection:
- With or without;
- Type (pulse, air pumps or others).
(3) EGR:
- Type (cooled or non-cooled, active or passive control, high pressure
or low pressure).
6.3.2 Type V test can be conducted on a vehicle that is different with the
vehicle type to be approved for environmental protection in the following
- Vehicle body;
- Transmission (automatic or manual);
- Size of the wheels or tyres;
- Assembly plant of catalytic converters and particulate traps.
6.4 Extensions for OBD system
The type approval can be extended to the same vehicle-OBD family as
described in Attachment IB. The type approval shall be extended regardless of
the following vehicle characteristics:
- Engine accessories;
- Tyres;
- Equivalent inertia;
- Overall transmission ratio;
- Transmission type; and
- Type of bodywork.
6.5 Application of extensions to other vehicles
When an extension has been granted to a vehicle type in accordance with
paragraphs 6.1 to 6.4, such a type approval shall not be further extended to
7 Conformity of production
Measures shall be taken to ensure the conformity of production in accordance
with Annex M. Conformity of production is checked on the basis of the
descriptions set out in Annex A and Annex B. Where necessary, part of or all
tests described in point 5.2 can be carried out.
7.1 Check of conformity of production for Type I test
7.1.1 When a Type I test is to be carried out for a vehicle type approval that
has one or several extensions, the test may be carried out either on the vehicle
type described in Annex A or on the vehicle type relating to the relevant
7.1.2 After selection by the approval authority, the manufacturer shall not
undertake any adjustment to the vehicles selected.
7.1.2.1 Three vehicles shall be selected at random from the same series of
batch products and subject to Type I test as described in Annex C. The test
result shall be corrected by using the deterioration factors described in
type-approval certificate (actually measured). The limit values are set out in
paragraph 5.3.1.4.
7.1.2.2 If the approval authority is satisfied with the production standard
deviation given by the manufacturer in accordance with Annex M, the test
results shall be determined according to MA.1.
7.1.2.3 If the approval authority is not satisfied with the production standard
deviation given by the manufacturer or the manufacturer fails to provide the
relevant record, the test results shall be determined according to MA.2.
7.1.2.4 According to the criteria specified in MA.1 or MA.2, on the basis of the
number of sampling test vehicles, the products of this series shall be deemed
to conform or not to conform to Type I test once a pass decision is reached for
all the pollutants or a fail decision is reached for one pollutant.
When a pass decision has been reached for one pollutant, the decision shall
not be changed by any additional tests carried out to reach a decision for the
other pollutants. If no pass decision is reached for all the pollutants and no fail
decision is reached for one pollutant, a test shall be carried out on another
vehicle (see Figure 2).
Figure 2 -- Flow chart for check of conformity of production for Type I
When conducting test on another vehicle, if the test statistic for one pollutant
does not satisfy with either the pass or the failure criteria, the manufacturer can
terminate the sampling test. If this situation occurs, the conformity of
production for Type I test shall be deemed as non-compliant.
7.1.2.5 Notwithstanding the requirements specified in 7.1.2.2 to 7.1.2.4, the
type-approval authority can adopt the following criteria for random inspection
of conformity of production:
- If the mass emission of each pollutant from the three vehicles does not
exceed 1.1 times of the limits respectively, and their mean value does not
exceed the limits, the conformity of production of Type I test shall be
determined as “Conformity”.
- If the mass emission of a pollutant from one of the three vehicles exceeds
1.1 times of the limits, or their mean value exceeds the limits, the
conformity of production of Type I test shall be determined as
“Non-conformity”.
7.1.3 Notwithstanding the requirements specified in C.2.2.1, the tests shall be
carried out on the qualified vehicles coming straight off the production line,
instead of any running-in operation.
7.1.3.1 At the request of the manufacturer, the tests may be carried out on
vehicles which have not completed:
- 3000 km for vehicles equipped with a positive ignition engine;
- 15000 km for vehicles equipped with a compression ignition engine.
In both cases, the running-in shall be carried out according to the running-in
specifications of the manufacturer, but no adjustment shall be made to these
7.1.3.2 If the manufacturer wishes to run in the vehicles, the sample vehicles
shall be subject to run-in operation. For the vehicles equipped with a positive
ignition engine, the run-in distance shall be less than 3000 km. For the vehicles
equipped with a compression ignition engine, the run-in distance shall be less
than 15000 km. For the vehicles equipped with periodically regenerating
system, within the run-in distance specified in 7.1.3.2, the vehicle shall have
completed more than one third (1/3) of the interval between neighboring
regenerating distances.
7.1.4 Tests shall be performed using commercially available vehicle fuels that
comply with the relevant standards. However, at the manufacturer's request,
the reference fuels described in Annex J may be used.
7.2 Check of conformity of production for Type II test
7.2.1 Check of the conformity of production for two-speed idle test of the
vehicles equipped with positive ignition engines
7.2.1.1 The manufacturer shall sample vehicles from those coming off the
production line to perform two-speed idle test.
7.2.1.2 The emission values of CO and THC at two-speed idle and λ value at
high idling speed shall be within the control range declared by the
manufacturer for type approval.
7.2.2 Check of the conformity of production for free acceleration smoke test of
the vehicles equipped with compression ignition engines
7.2.2.1 The manufacturer shall sample vehicles from those coming off the
production line to perform free acceleration smoke test.
7.2.2.2 The measured optical absorption coefficient shall not exceed the type
approval value, as set out in paragraph 5.3.2.2.3, plus 0.5m-1.
7.3 Check of conformity of production for Type III test
7.3.1 All vehicles sampled in 7.1 shall be subject to Type III test.
7.3.2 The measurement results shall comply with the requirements in 5.3.3.2
when performing test in accordance with Annex E.
7.4 Check of conformity of production for Type IV test
7.4.1 Check of the conformity of production shall be conducted in accordance
with Section F.7.
7.4.2 Where necessary, a vehicle shall be randomly taken from the batch
products and subjected to the complete vehicle evaporative emission test as
described in Annex F. If the measurement results meet the requirements of
5.3.4.3, the conformity of production for Type IV test is considered to meet the
7.4.3 If the vehicle taken cannot satisfy the requirements of paragraph 7.4.2, a
further random sample of four vehicles shall be taken from the batch products
and subjected to the tests described in Annex F. The tests may be carried out
on vehicles which have been run in for no more than 15000 km.
7.4.4 The conformity of production of Type IV test shall be deemed to conform
if at least three vehicles meet the requirements of the tests described in Annex
F, otherwise the conformity of production shall be identified as non-conformity.
7.5 Check of conformity of production for carbon canister
7.5.1 Three vehicles or three sets of carbon canisters are sampled from that on
assembly line or series products at random to test the effective volume and
initial working capability of canisters. The test shall be carried out by using the
mixture of butane (n-butane, 50 percent volume) and nitrogen (50 percent
volume), at a butane inflation rate of 40 g/h, according to the requirements in
HJ/T390.
7.5.2 Criteria for conformity of production of canister:
- If the test result of the effective volume and initial working capability of the
three sets of canisters is not less than 0.85 times of the declared value and
their mean value is not less than 0.9 times of the declared value, the
conformity of production of canister is identified as conformity.
- If the test result of the effective volume or initial working capability of any of
the three sets of canisters is less than 0.85 times of the declared value or
their mean value is less than 0.9 times of the declared value, the
conformity of production of canister is identified as non-conformity
7.6 Check of conformity of production for catalytic converter
7.6.1 Three vehicles or three sets of catalytic converters are sampled from that
on assembly line or series products at random to test the substrate volume and
precious metal content, according to the requirements in HJ 509.
7.6.2 Criteria for conformity of production of catalytic converter:
- If the test result of the substrate volume and precious metal content of the
three sets of catalytic converters is not less than 0.85 times of the declared
value and their mean value is not less than 0.9 times of the declared value,
the conformity of production of catalytic converter is identified as
- If the test result of the substrate volume or precious metal content of any of
the three sets of catalytic converters is less than 0.85 times of the declared
value or their mean value is less than 0.9 times of the declared value, the
conformity of production of catalytic converter is identified as
7.7 Check of conformity of production for OBD system
7.7.1 When the approval authority determines that the quality of production
seems unsatisfactory, a vehicle shall be randomly taken from the series
products and subjected to the tests described in Attachment IA.
7.7.2 The conformity of production of the OBD system shall be deemed to
conform if this vehicle meets the requirements of the tests described in
Attachment IA.
7.7.3 If the vehicle taken from the series does not satisfy the requirements of
paragraph 7.7.2, a further random sample of four vehicles shall be taken from
the series and subjected to the tests described in Attachment IA. The tests
may be carried out on vehicles which have been run in for no more than 15000
7.7.4 The conformity of production of the OBD system shall be deemed to
conform if at least three vehicles meet the requirements of the tests described
in Attachment IA, otherwise it shall be deemed to not conforming.
7.8 If a vehicle type fails to satisfy any one criterion for conformity of production
as described in 7.1 to 7.7, the manufacturer shall take all necessary measures
as soon as pos......