GB 20891-2014 PDF English
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[Including 2020XG1] Limits and measurement methods for exhaust pollutants from diesel engines of non-road mobile machinery (CHINA III, IV)
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[Replaced by GB 20891-2014] Limits and measurement methods for exhaust pollutants from diesel engines of non-road mobile machinery (I, Ⅱ)
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GB 20891-2014: [Including 2020XG1] Limits and measurement methods for exhaust pollutants from diesel engines of non-road mobile machinery (CHINA III, IV)
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB20891-2014
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.040.50
Z 64
Replacing GB 20891-2007
Limits and Measurement Methods for Exhaust Pollutants
from Diesel Engines of Non-road Mobile Machinery
(CHINA III, IV)
[Including Amendment 2020XG1]
Issued on. MAY 16, 2014
Implemented on. OCTOBER 1, 2014
Issued by. Ministry of Environmental Protection (MEP);
General Administration of Quality Supervision, Inspection and
Quarantine (AQSIQ) of the People's Republic of China.
Announcement of the Ministry of Environmental Protection
of the People’s Republic of China
[2014] No. 36
This is announced in order to implement “Environmental Protection Law of the People’s
Republic of China” and "Law of the People's Republic of China on the Prevention and Control of
Atmospheric Pollution", prevent and control pollution, protect and improve ecological
environment, and ensure human health, "Limits and Measurement Methods for Exhaust
Pollutants from Diesel Engines of Non-road Mobile Machinery (CHINA III and IV)" was
approved as a national standard for the pollutant emission, and jointly issued by the Ministry
of Environmental Protection and the General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China.
Standard name and serial number are as follows.
"Limits and Measurement Methods for Exhaust Pollutants from Diesel Engines of Non-road
Mobile Machinery (CHINA III and IV)" (GB 20891-2014)
According to the relevant legal provisions, this Standard has compulsory execution effect.
Since the date of publication, this Standard shall be implemented and type approval can be
carried out in accordance with the standard. Since the date of Oct. 1, 2014, all the diesel engines
of non-road mobile machinery subjected to emission type approval of exhaust pollutant must
meet the Phase III requirements of this Standard.
This Standard was published by China Environmental Science Press; the contents may be
queried from the website of the Ministry of Environmental Protection (bz.mep.gov.cn).
“Limits and Measurement Methods for Exhaust Pollutants from Diesel Engines of Non-road
Mobile Machinery (CHINA I and II)” (GB 20891-2007) will be abolished since April 1, 2016.
It is hereby announced.
The Ministry of Environmental Protection
May 16, 2014
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative References... 7
3 Terms and Definitions... 7
4 Application and Authorization of Type Approval... 13
5 Technical Requirements and Test... 14
6 Production Conformity Inspection... 17
7 Diesel Engine Label... 19
8 Parameters for Determining Diesel Engine Family... 20
9 Selection of Parent Engine... 22
10 Standard Implementation... 22
Appendix A (Normative) Type Approval Declaration Materials... 24
Attachment AA (Normative) Basic Characteristics and Relevant Test Data of Diesel
Engine (Parent Engine)1)... 26
Attachment AB (Normative) Basic Characteristics of Diesel Engine Family... 34
Attachment AC (Normative) Basic Characteristics of Diesel Engine Type in Family1)
Appendix B (Normative) Test Regulations... 42
Attachment BA (Normative) Measurement and Sampling Specification... 50
Attachment BB (Normative) Calibration Specification... 57
Attachment BC (Normative) Data Determination and Calculation... 67
Attachment BD (Normative) Technical requirements for durability... 76
Attachment BE (Normative) Set specification for setting of engine dynamometer in
NRTC test cycle... 79
Appendix C (Normative) Sample system for Gas and Particulate Matter... 88
Appendix D (Normative) Technical Requirements of Reference Diesel1)... 116
Appendix E (Normative) Devices and Accessories Installed for Diesel Engine Power
Test... 119
Appendix F (Normative) Type Approval Certificate... 122
Attachment FA (Normative) Test Results... 124
Appendix G (Normative) Production Conformity... 127
Appendix H (Informative) Bibliography... 129
AMD 1-2020 [2020XG1]... 131
1 Scope
The standard specifies the limits and measurement methods for the exhaust pollutant from
diesel engines of non-road mobile machinery (including marine diesel engines with a rated net
power not exceeding 37kW) and the secondary diesel engines installed on road vehicles for
carrying people (cargo).
This Standard is applicable to type approval and production conformity inspection of the diesel
engines installed for the following (including but not limited to) non-road mobile machinery,
with rated net power not exceeding 560kW and operating at non-permanent speed, e.g..
-- Industrial drilling equipment;
-- Engineering machinery (including loader, bulldozer, road roller, asphalt paver, truck for
non-highway, excavator, etc.);
-- Agricultural machinery (including large tractor, combine-harvester, etc.);
-- Forestry machinery;
-- Material handling machinery;
-- Snow-plough equipment;
-- Airport ground servicing equipment.
This Standard is applicable to type approval and production conformity inspection of the diesel
engines installed for the following (including but not limited to) non-road mobile machinery,
with rated net power not exceeding 560kW and operating at non-permanent speed, e.g..
-- Air compressor;
-- Generator unit;
-- Fishery machinery (automatic aerator, pond excavator, etc.);
-- Water pump.
2 Normative References
This Standard refers to the provisions of the following documents or therein. For undated
references, the effective versions are applicable to this Standard.
GB 252 General Diesel Fuels
GB/T 6072 Reciprocating Internal Combustion Engines, Performance
GB/T 6379.2-2004 Accuracy (Trueness and Precision) of Measurement Methods and
Results Part 2.Basic Method for the Determination of Repeatability
and Reproducibility of a Standard Measurement Method
GB 17691-2005 Limits and Measurement Methods for Exhaust Pollutants from
Compression Ignition and Gas Fuelled Positive Ignition Engines of
Vehicles (CHINA III IV V)
GB/T 17692-1999 Measurement Methods of Net Power for Automotive Engines
HJ 509-2009 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
3 Terms and Definitions
3.1 Non-road mobile machinery
Various machinery used for non-road and mentioned in "scope", i.e..
3.2 Secondary engine
Diesel engine which is mounted for road vehicle, does not provide driving force for vehicle but
provides power for vehicle-mounted special facilities.
3.3 Test cycle
The procedures that diesel engine is tested at stated speed and torque under steady-state
condition or instantaneous condition (NRTC test).
3.4 Non-road transient cycle
Test cycle including 1238 conditions changing second by second as specified in Attachment BE of
this Standard.
3.5 Reference speed
Actual speed value corresponding to 100% point relative speed in NRTC test as described in
Attachment BB of Standard GB 17691-2005.
3.6 Diesel engine type-approval
Approve a diesel engine type with respect to emission level of exhaust pollutants from diesel
engine.
4 Application and Authorization of Type Approval
4.1 Application of type approval
The application of type approval for diesel engines of non-road mobile machinery is proposed
by manufacturing enterprise or its authorized agent to the type approval institution, and the
inspection content required by this Standard shall be completed.
4.1.1 The technical data related to type approval and the relevant durability test method and
test result data shall be submitted according to the requirements of Appendix A and Attachment
BD of this Standard.
4.2 Authorization of type approval
4.2.1 The type approval institution authorizes the type approval for diesel engine type (or
family) meeting the requirements of Article 5 and Appendix G of this Standard, and issues type
approval certificate specified in Appendix F.
4.3 Exemption of type approval
For diesel engines used for special purposes such as export, exhibition, rescue, emergency,
matching test and replacement, application for type approval exemption can be filed to type
approval competent authority. Documents need to be submitted to competent authorities include.
model, power, manufacturing plant, purpose, emission standard phase, quantity, production
date, etc.
5 Technical Requirements and Test
5.1 General
The technical measures taken by the manufacturing enterprises must ensure the emission of
diesel engine under normal operating conditions and within the useful life period specified in
Article 5.2.2 of this Standard meets the requirements of this Standard.
5.2 Provisions for exhaust pollutants
5.2.1 Test regulations and sampling system
The measurement and sampling regulations for exhaust pollutants from diesel engine shall be
in accordance with those specified in Attachment BA of Appendix B, and the test cycle shall be
in accordance with stable-state test cycle specified in Table B.1 or Table B.2 or Table B.3 of
Appendix B. In Phase IV, non-constant speed diesel engine not exceeding 560 kW also need to
be tested in accordance with NRTC transient test cycle specified in Attachment BE. The exhaust
pollutants from diesel engine shall be determined by the system described in Appendix C.
5.2.2 Useful life
Exhaust and control device of diesel engine shall be ensured to work well, and the pollutant
emission shall comply with the limit value requirements specified in 5.2.3.
For the diesel engine durability running test, the durability test specified in Table 1 shall be
completed in accordance with the requirements of Attachment BD; the shortest operation
duration or equivalent operation duration of diesel engine exhaust durability shall not be less than
25% of the useful life specified in Table 2;
5.2.3 Limits
The brake specific emission of carbon monoxide (CO), hydrocarbon (HC), oxynitride (NOx)
and particulate matter (PM) in exhaust pollutants from diesel engines of non-road mobile
machinery, multiplied by the deterioration coefficient determined according to Article BD.2.9
in Attachment BD of this Standard (for diesel engines installed with exhaust aftertreatment
system), or plus the deterioration correction value determined according to Article BD.2.10 in
Attachment BD of this Standard (for diesel engines not installed with exhaust aftertreatment
system) shall not exceed the limit specified in Table 2.
5.2.5 The diesel engine for replacement shall meet the emission requirements of the original
diesel engine when it was manufactured.
5.3 Requirements for installing diesel engine on non-road mobile machinery
The diesel engine installed on non-road mobile machinery shall meet the following
characteristics of this diesel engine type-approval.
5.3.1 The intake pressure drop shall not exceed the pressure drop of the engine subjected to
type approval specified in Attachment AA.1.18.
5.3.2 The exhaust back pressure shall not exceed the back pressure of the engine subjected to
type approval specified in Attachment AA.1.19.
6 Production Conformity Inspection
The manufacturing enterprise shall take measures according to the requirements of Appendix
G to guarantee production conformity.
6.1 General requirements
6.1.1 For diesel engine type (or family) of non-road mobile machinery subjected to type
approval and produced in batch, the manufacturing enterprise must take measures to ensure
diesel engine type (or family) is in conformity with emission declaration materials of this diesel
engine type (or family).
6.1.2 The type approval institution shall conduct production conformity inspection based on
the content of emission declaration materials of this diesel engine type (or family) of non-road
mobile machinery.
6.2 Production conformity inspection of diesel engine emission
6.2.1 One prototype shall be randomly taken from the diesel engines produced in batch. The
manufacturing enterprise shall not make any adjustment for the diesel engines sampled for
inspection, but may conduct grinding-in according to the manufacturing enterprise's technical
specification.
6.2.2 If the brake specific emission of gaseous pollutants and particulate matters of the taken
diesel engines, after being corrected according to the deterioration coefficient or deterioration
correction value determined in type approval does not exceed the limit requirements specified in
Article 5 of this Standard, then the production conformity of this batch of products is qualified.
6.2.3 If one diesel engine randomly taken from the products in batch fails to meet the limit
requirements specified in Article 5 of this Standard, the manufacturer may require taking several
diesel engines from the products in batch for production conformity check.The manufacturing
enterprise shall determine the quantity n of the sample engines (including the original sample
engine).Except for the original sample engine, other diesel engines also need to be tested.
6.2.4 Although there are requirements in 6.2.1 to 6.2.3, The type approval institution can select
methods and judgment criteria as follows.
6.3 Production conformity inspection of catalytic converter
6.3.1 Randomly take three sets of catalytic converters from the assembly line or products in
batch for carrying out measurement for their carrier volume and the content of each precious
metal according to the requirements of HJ 509-2009.
6.3.2 Determination criteria for the production conformity of catalytic converter.
7 Diesel Engine Label
7.1 The manufacturing enterprise shall install a same label on each diesel engine in production,
and the labels shall meet the following requirements.
7.2 If the label are not easy to see due to the cover of machinery after installed on mobile
machinery, the engine manufacturing enterprise shall provide an additional label to the mobile
machinery manufacturing enterprise.The additional label shall meet the following requirements.
7.3 The label shall include the following information.
7.5 The label must be installed before diesel engine accomplishs final examination and leaves
production line.
7.6 The position of diesel engine label shall be declared in Appendix A and described in type
approval certificate of Appendix F.
8 Parameters for Determining Diesel Engine Family
The diesel engine family shall be determined according to the necessary common basic design
parameters of the diesel engine in the family. Under certain conditions, some design parameters
may have mutual influence which must be taken into account so as to ensure only the diesel
engine with similar emission characteristic is included in a diesel engine family.
8.3 Single cylinder displacement
8.4 Intake mode
8.5 Combustion chamber type/structure
8.6 Air valve and port- structure, dimension and quantity
8.7 Fuel injection system
8.8 Other characteristics
8.9 Exhaust aftertreatment
9 Selection of Parent Engine
9.1 The selection of parent engines in diesel engine family shall take the maximum fuel oil
feed capacity per stroke at maximum torque speed as the first choice principle; if two or more
diesel engines meet the first choice principle, the maximum fuel oil feed capacity per stroke at
rated speed shall be taken as the second choice principle.
9.2 If the diesel engines in the family have other variable characteristics influencing the
emission, these characteristics, during parent engine selection, shall be determined and taken
into account.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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