Method of reliability test for catalytic converter of motorcycles and mopeds
1 Scope
This standard specifies the terms, definitions, test procedure, test method, test result analysis and report of reliability tests for catalytic converters of motorcycles and mopeds on roads and engine beds.
This standard is applicable to reliability tests for catalytic converters of motorcycles and mopeds.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 5363-1995 Method of bed test of gasoline engine for motorcycles and mopeds
GB/T 5374-1995 Test method of reliability for motorcycles and mopeds
GB/T 5378-1994 General rules of running test for motorcycles and mopeds
GB 14621 Limits and measurement methods for exhaust emissions from motorcycles and mopeds at idle speed
GB 14622 Limits and measurement methods for exhaust emissions from motorcycles under running mode
GB 17930-1999 Unleaded petrol (gasoline) for motor vehicles
GB 18176 Limits and measurement methods for exhaust emissions from mopeds under running mode
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3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
catalytic converter
catalytic device mounted in the motorcycle exhaust system, which can reduce the emissions of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx) in the exhaust system through the reduction and oxidation reaction of catalyst
3.2
tested muffler
exhaust muffler equipped with catalytic converter inside
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test procedure
5 Test method
6 Test result analysis and report
Annex A (Normative) Test record of exhaust emissions
Annex B (Normative) Bed rapid aging test cycle
Annex C (Normative) Decay curve of conversion ratio of catalytic converter
