GB 3847-2018 English PDF

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB 3847-2018
Historical versions: GB 3847-2018
Preview True-PDF (Reload/Scroll if blank)

GB 3847-2018: Limits and measurement methods for emissions from diesel vehicles under free acceleration and lugdown cycle
GB 3847-2018
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS
Replacing GB 3847-2005, HJ/T 241-2005
Limits and measurement methods for
emissions from diesel vehicles under
free acceleration and lugdown cycle
ISSUED ON: SEPTEMBER 27, 2018
IMPLEMENTED ON: MAY 01, 2019
Issued by: Ministry of Ecology and Environment;
State Market Regulatory Administration.
Table of Contents
Foreword ... 4 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 7 
4 Inspection items ... 10 
5 Inspection process and requirements ... 11 
6 Appearance inspection ... 14 
7 Inspection of on-board diagnostic system (OBD) ... 15 
8 Testing of emission pollutants ... 16 
9 Requirements for data recording, storage, submission ... 18 
10 Emission monitoring of in-use vehicles ... 19 
11 Implementation of standards ... 20 
Appendix A (Normative) Free acceleration method ... 21 
Appendix B (Normative) Lugdown method ... 25 
Appendix BA (Informative) Pre-inspection requirements of lugdown test for
vehicles... 49 
Appendix BB (Normative) Test equipment technical requirements ... 52 
Appendix C (Normative) Characteristics and installation requirements for
opacity meter ... 60 
Appendix D (Normative) Ringelmann smoke method ... 67 
Appendix E (Normative) Inspection procedure of on-board diagnostic (OBD)
system ... 74 
Appendix EA (Normative) Technical requirements for OBD diagnostic
instrument ... 78 
Appendix EB (Normative) OBD inspection data item ... 81 
Appendix F (Normative) Inspection report ... 83 
Appendix G (Normative) Reporting data items in real time ... 91 
Limits and measurement methods for
emissions from diesel vehicles under
free acceleration and lugdown cycle
1 Scope
This standard specifies the limits and measurement methods for emissions
from diesel vehicles under free acceleration and lugdown cycle, as well as the
method and judgment basis of appearance inspection and OBD inspection of
diesel vehicle.
This standard is applicable to the inspection for new produced vehicle at end of
production line, inspection for register vehicle, inspection for in-use vehicle.
This standard also applies to other vehicles equipped with compression ignition
engines.
This standard does not apply to low-speed trucks and three-wheeled vehicles.
2 Normative references
The contents of this standard refer to the following documents or their terms.
For undated references, the valid versions are applicable to this standard.
GB/T 5181-2001 Automotive emission - Terms and definitions
GB 7258 Safety specifications for power-driven vehicles operating on roads
GB 17691 Limits and measurement methods for exhaust pollutants from
compression ignition and gas fueled positive ignition engines of vehicles
GB 17691-2018 Limits and measurement methods for emissions from diesel
fueled heavy-duty vehicles (CHINA VI)
GB/T 17692 Measurement methods of net power for automotive engines
GB 18352 Limits and measurement methods for emissions of pollutants from
light-duty vehicles
GB 19147 Automobile diesel fuels
Refers to the actually measured value of the output power of the drive wheel
when the vehicle is running on the chassis dynamometer.
3.7
Maximum wheel power (MaxHP)
The maximum value of the wheel power as measured according to the
measurement method as specified in this standard.
3.8
Optical absorption coefficient (k)
A coefficient which indicates the attenuation of the light beam by the unit
length, which is the multiplying product of the number of particles n per unit
volume, the average projected area a of the particles, the extinction
coefficient Q of the particles.
3.9
Ringelmann blackness
A soot concentration representation method as obtained by comparing the
emission pollutant's color with the Ringelmann concentration map, which is
divided into 0 ~ 5 levels. There are six types of corresponding Ringelmann
concentration maps, wherein the level 0 is all white, level 1 is 20% blackness,
level 2 is 40% blackness, level 3 is 60% blackness, level 4 is 80% blackness,
level 5 is total black.
3.10
Nitrogen oxide, NOx
Refers to nitrogen oxides emitted from the exhaust pipe, including nitrogen
monoxide (NO) and nitrogen dioxide (NO2).
3.11
Engine maximum speed (MaxRPM)
In the test as specified in this standard, the maximum engine speed as
measured when the accelerator pedal is in the fully open position.
3.12
Actual velocity of maximum wheel power (VelMaxHP)
Refers to the drum line speed at the maximum wheel power as actually
inspection for in-use vehicles, supervisory sampling inspections, inspections
of in-use vehicles prior to the registration and transfer registration.
3.19
Supervision test
Refers to the sampling inspection of new produced vehicles before exit-
factory, as well as the sampling inspection of the in-use vehicles centralized
parking lots, maintenance sites and roads.
3.20
On-board diagnostic OBD system (OBD system)
Refers to the computer information system installed on the vehicle and
engine. It belongs to the pollution control device and shall have the following
functions:
a) Diagnose faults that affect emissions performance;
b) Display the faults through alarm system;
c) Use the information as stored in the memory of the electronic control unit
to determine the possible fault areas and provide offline communication of
information.
3.21
Environmental information identification document VEID
Refers to the environmental information identification documents as
specified in the “Announcement on the Publicity of Environmental Protection
Information for Motor Vehicles and Non-Road Mobile Machinery” (GHGDQ
[2016] No.3), including the enterprise’s declaration for compliance with the
emission standards and stages of the vehicle, the basic vehicle information,
the environmental inspection information, the information of pollution control
device.
4 Inspection items
4.1 Vehicle environmental inspection items are as shown in Table 1.
4.2 The entry inspection of the new produced imported vehicles shall be carried
out in accordance with the inspection items as specified in Table 1. It shall also
comply with other standards and regulations.
6.2.2 Check whether the vehicle's pollution control device and the engine are
consistent with the vehicle environmental identification document.
6.3 In-use vehicle
6.3.1 Check whether the condition of the vehicle under inspection is normal. If
there is any abnormality, it shall request the owner to carry out maintenance.
6.3.2 Check whether the vehicle has burning engine oil or serious black smoke.
If it is, it shall request the owner to carry out maintenance.
6.3.3 Check whether the appearance of the engine's exhaust pipe, exhaust
muffler, exhaust aftertreatment device as well as the installation and fastening
parts are in good condition. If there is corrosion, air leakage, damage or
looseness, it shall request the owner to carry out maintenance.
6.3.4 Check whether the vehicle is equipped with an OBD system.
6.3.5 Determine whether the vehicle is suitable for lugdown testing. If it is not
suitable (for example, full-time four-wheel drive and timely four-wheel drive that
cannot manually switch between two-drive drive mode), it shall be marked.
When carrying out the lugdown testing, it shall confirm that there is no foreign
matter on the surf...