GB 19758-2005 PDF in English
GB 19758-2005 (GB19758-2005) PDF English
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Limits and measurement methods for exhaust smoke emissions from motorcycles and mopeds
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GB 19758-2005: PDF in English GB 19758-2005
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.040.50
Z 64
Limits and measurement methods for exhaust smoke emissions
from motorcycles and mopeds
ISSUED ON: MAY 30, 2005
IMPLEMENTED ON: JULY 1, 2005
Issued by: Ministry of Ecology and Environment of the People’s Republic of China.
General Administration of Quality Supervision, Inspection and Quarantine of
the People’s Republic of China.
Table of Contents
Foreword ... 5
1 Scope ... 6
2 Normative reference ... 6
3 Terms and definitions ... 6
4 Emission Limits of Exhaust Smoke ... 7
5 Test Classification ... 7
6 Test Method ... 8
7 Implementation of Standard ... 8
Appendix A (Normative) Measurement Method for Exhaust Smoke Concentration of
Motorcycles and Mopeds under Snap-acceleration Condition ... 10
Appendix B (Normative) Exhaust Smoke Concentration Inspection Record Table of
Motorcycles and Mopeds under Snap-acceleration Condition ... 14
Announcement of State Environmental Protection Administration
No.21 of 2005
In order to implement the Law of the People's Republic of China on the Prevention and Control
of Atmospheric Pollution, prevent and control environmental pollution, protect and improve the
living environment and ecological environment, protect human health, it is hereby approved
that four standards, including the "Limits and measurement methods for exhaust pollutants
from compression ignition and gas fueled positive ignition engines of vehicles (III, IV, V)", as
the national pollutant discharge standards. They are jointly issued by the State Environmental
Protection Administration and the General Administration of Quality Supervision, Inspection
and Quarantine.
The standard names, numbers, implementation plans are as follows:
1. Limits and measurement methods for exhaust pollutants from compression ignition and gas
fueled positive ignition engines of vehicles (III, IV, V) (GB 17691-2005)
It is implemented from January 1, 2007. Since the date of implementation, it will replace the
gas fueled ignition engine part in the "Limits and measurement methods for exhaust
pollutants from compression ignition (C.I.) engines of vehicles (GB 17691-2001)" and the
"Limits and measurement methods for exhaust emissions from positive ignition (P.I.) engines
of vehicles and vehicles equipped with P.I. Engines (GB 14762-2002)".
2. Limits and measurement methods for exhaust smoke from C.I.E. (Compression Ignition
Engine) and vehicle equipped with C.I.E. (GB 3847-2005)
It is implemented from July 1, 2005. Since the date of implementation, it will replace the
automobiles equipped with compression ignition engines, in the "Limits and measurement
methods for exhaust visible pollutants from compression ignition (C.I.) engines and vehicles
equipped with C.I. engines (GB 3847-1999)", "Emission standard for smoke at full load from
diesel engine of vehicle (GB 14761.7-93)", "Measurement method for smoke at full load
from automotive diesel engine (GB 3847-83)", "Emission standard for smoke at free
acceleration from vehicle with diesel engine (GB 14761.6-93)", "Measurement method for
smoke exhausted from vehicle with diesel engine at free acceleration – Filter meter" (GB/T
3846-93)", "Limits and measurement methods for exhausts of pollutants from in-use vehicles
(GB 18285-2000)".
3. Limits and measurement methods for exhaust pollutants from vehicles equipped ignition
engine under two-speed idle conditions and simple driving mode conditions (GB
18285-2005)
It is implemented from July 1, 2005. Since the date of implementation, it will replace the
automobiles equipped with ignition engines "Emission standard for pollutants at idle speed
from vehicle with petrol engine (GB 14761.5-93)", "Measurement method for pollutants at
idle speed from vehicle with petrol engine (GB/T 3845-93)", "Limits and measurement
Limits and measurement methods for exhaust smoke emissions
from motorcycles and mopeds
1 Scope
This standard specifies the motorcycles and mopeds’ type approval, production consistency
inspection, and limits and measurement methods for exhaust smoke emission of in-use
vehicles.
This standard is applicable to all types of motorcycles and mopeds.
2 Normative reference
The provisions in the following documents are quoted in this standard and become the
provisions of this standard. For the undated reference, the latest versions are applicable to this
standard.
GB14622 Limits and measurement methods for exhaust pollutants emissions from
motorcycles (Operating condition methods)
GB 17930 Unleaded gasoline for vehicles
SH/T 0675 Air-cooled 2-stroke gasoline and engine oil
3 Terms and definitions
The following terms and definitions are applicable to this standard:
3.1 Motorcycles and mopeds
Motorcycle: A two-wheeled or three-wheeled motor vehicle that is equipped with a spark
ignition engine, with weight of entire vehicle smaller than 400kg, engine capacity larger than
50ml or maximum designed speed larger than 50km/h.
Moped: A two-wheeled or three-wheeled motor vehicle that is equipped with a spark ignition
engine, with weight of entire vehicle smaller than 400kg, engine capacity not more than 50ml
or maximum designed speed not more than 50km/h.
3.2 opacity N (%)
Opacity refers to the ratio of the light emitted by the light source that cannot pass through the
smoke exhaust, expressed as a percentage. It is 0% when the light is completely transmitted,
and 100% when it is not transmitted at all.
3.3 effective optical path length L (m)
Effective optical path length refers to the length of the light beam crossed by the smoke exhaust
between the light source and the light-receiving element. This length has been corrected for the
inhomogeneity caused by density gradients and edge effects.
5.1.3 Before the test, the vehicle under inspection must be subjected to running-in in
accordance with the stipulations of the enterprise’s product instruction manual. If the
manufacturer agrees, the vehicle under inspection may be exempted from the running-in.
5.1.4 In accordance with the measurement method in Appendix A, carry out the type approval
test of exhaust smoke emission of motorcycles and mopeds.
5.1.5 For the application for type approval and the extension of type approval, refer to the
relevant clauses in GB 14622.
5.2 Production Conformity Inspection Test
Production conformity inspection test refers to the test of inspecting the exhaust smoke
emission of motorcycles and mopeds produced in batches by manufacturing enterprises.
5.2.1 For batches of motorcycles and mopeds that have passed the type approval test under this
Standard and have been approved for production, all parts that affect the exhaust smoke of the
engine shall be consistent with those of the sample vehicles that have undergone the type
approval test.
5.2.2 In order to verify the consistency specified in 5.2.1, a sample vehicle shall be taken from
the mass-produced products.
5.2.3 In accordance with the stipulations of 5.1.3, conduct the running-in.
5.2.4 In accordance with the measurement method in Appendix A, conduct a production
conformity inspection test on the exhaust smoke emission of motorcycles and mopeds.
5.2.5 To judge whether the mass-produced products are qualified or not, refer to 6.3.2 in GB
14622.
5.3 In-use Vehicle Inspection Test
In-use vehicle inspection test refers to the inspection test of exhaust smoke emission of
motorcycles and mopeds with registered license plates.
5.3.1 By means of visual inspection and test run, check whether the parts and engines of
motorcycles and mopeds are normally operating, and it is allowed to adjust or replace parts.
5.3.2 In accordance with the measurement method in Appendix A, conduct the in-use vehicle
inspection test on the exhaust smoke emission of motorcycles and mopeds.
6 Test Method
The measurement method for the exhaust smoke concentration of motorcycles and mopeds
under the snap-acceleration condition shall comply with the stipulations of Appendix A.
7 Implementation of Standard
The manufacturers of motorcycles and mopeds shall submit an application for type approval to
the competent department in charge of type approval for the exhaust smoke emission level of
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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