GB 3847-2018Limits and measurement methods for emissions from diesel vehicles under free acceleration and lugdown cycle (English PDF)

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.

5.1 Inspection for new produced vehicle at end of production line

5.1.1 The production enterprise shall ensure that the pollutant control devices

of all vehicles at end of production line are consistent with the of the vehicle-accompanied list.

5.1.5 The imported vehicles shall, before entry, be subjected to the inspection

for new produced vehicles at end of production line. Meanwhile it shall report the inspection information to the competent department of ecological environment.

5.2 The inspection items for registration shall be carried out in accordance with

the provisions of Table 1.The information shall be submitted in accordance with the provisions of Appendix G. The inspection process is as shown in Figure 2.

5.3 The inspection items of the in-use vehicle shall be carried out in accordance

with the provisions of Table 1.Before the inspection, it shall connect the environmental network for verification, to check whether the vehicle has any environmental violation records. According to the provisions of Appendix G, submit the information. The inspection process is as shown in Figure 3.

6.1 Offline of new produced vehicles

6.2 Registration

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.

6.3.6 During the inspection of the change registration and transfer registration, it shall check whether the pollution control device is in good condition.

7.1 Offline of new produced vehicles

The automobile manufacturer shall check the OBD system's communication of each vehicle, to confirm that the OBD system's communication is normal before exit-factory.

7.3 In-use vehicle

8.1 Emission limits and measurement methods

8.1.1 Offline of new produced vehicles

Follow the requirements to carry out sampling test of the vehicle's emission at the end of the product line. The emission result shall be less than the emission limit as specified in 8.1.2.Production enterprises may also use other methods for emission testing, but shall demonstrate their equivalence.

8.1.2 Registration and in-use vehicles

Hybrid electric vehicles which has manual selection of driving mode shall be switched to the maximum fuel consumption mode for testing. In the absence of maximum fuel consumption mode, it shall be switched to the hybrid mode for testing. In the course of testing, if the engine is automatically turned off and automatically switches to the pure electric mode, there is no need to suspend the test and it can be carried out until the end of the test.

8.2 Determination of results

8.2.1 If any of the pollutant testing results do not meet the limit requirements, it

is determined that the emission test is unqualified.

8.2.2 If the vehicle's emissions have obvious visible smoke or the blackness

values exceeding Ringelmann level 1, it is determined that the emission test is unqualified.

8.2.2 [translator's note. should be 8.2.3] In the power sweep course of the lugdown method, the measurement result of the wheel power after correction shall be not less than 40% of the rated power of engine as specified by the manufacturer. Otherwise, it is determined that the testing result is unqualified.

8.2.5 [translator's note. should be 8.2.6] It is forbidden to use a failure strategy that reduces the effectiveness of the emission control device. All tampering for pollution control devices will lead to unqualified emission test.

9.2 The inspection agency shall transmit inspection information to the

competent department of ecological environment in real time.

9.3 The competent department of ecological environment at a lower level shall, in accordance with the provisions of Appendix F and Appendix G, report the inspection information to the competent department of ecological environment at a higher level in real time or at specified period.

9.4 The retention period of paper archives of inspection reports shall be not less

than 6 years. The retention period of electronic archives shall be not less than

10.1 From the date of implementation of this standard, the emission inspection

of the in-use vehicles (including the regular emission inspection and supervision test) shall be in compliance with the requirements of this standard.

10.2 The competent department of ecological environment at or above the

county level may conduct supervision test of the in-use vehicles on the centralized parking places, maintenance sites, actual roads of motor vehicles.

The sampling test contents may include emission detection, OBD inspection, inspection of pollution control device, verification of vehicle-accompanied list.

10.3 In the course of registration inspection, it shall carry out appearance

inspection, OBD inspection, emission pollutant testing.

10.4 For vehicles that are equipped with remote emission management on-

board terminals and report relevant emission data to the competent authority of ecological environment in real time as required, the provincial competent authority of ecological environment may exempt the online environmental inspection according to the data submission conditions.

11.1 This standard has been implemented since May 1, 2019.The regular

environmental inspection of vehicles as carried out nationwide shall be conducted by the lugdown method as specified in this standard. For vehicles that cannot be tested by the lugdown method, it may use the free acceleration method as specified in this standard.

11.2 From the date of implementation of this standard, the existing relevant

local emission inspection standards shall be abolished.

11.3 For the implementation of this standard, the competent department of

ecological environment under the State Council is responsible for its supervision.