1 Application Scope
This standard specifies the limits and measurement methods for tailpipe emissions and evaporative emissions of the motorcycle with spark-ignition engine, as well as the emission requirements for crankcase, endurance requirements for emission-control devices and technical requirements for on-board diagnostic (OBD) system.
This standard specifies the limits and measurement methods for tailpipe emissions of the three-wheeled motorcycle with compression-ignition engine, as well as the endurance requirements for emission-control devices and technical requirements for on-board diagnostic (OBD) system.
This standard specifies the type test requirements as well as production conformity inspection and judgment methods for motorcycles.
This standard is applicable to the motorcycles driven by spark-ignition engine, with maximum design speed greater than 50km/h or displacement greater than 50ml, and the three-wheeled motorcycles driven by compression-ignition engine, with maximum design speed greater than 50km/h or displacement greater than 50ml.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For undated references, the latest edition of the referenced document applies
GB/T 15089-2001 Classification of Power - Driven Vehicles and Trailers
HJ/T 289 Equipment Specifications and Quality Control Requirements for Gasoline Vehicles in Two-Speed Idle Exhaust Emission Test
QC/T 1003 Determination of Precious Metal in Metal Support Catalytic Converter for Motorcycles
ISO 2575: 2010 Road Vehicles - Symbols For Controls, Indicators and Tell-tales
ISO 9141-2 Road Vehicles - Diagnostic Systems - Part 2: CARB Requirements for Interchange of Digital Information
ISO 14229-3 Road Vehicles - Unified Diagnostic Services (UDS) - Part 3: Unified Diagnostic Services on CAN Implementation (UDSonCAN)
ISO 14229-4 Road Vehicles - Unified Diagnostic Services (UDS) - Part 4: Unified Diagnostic Services on FlexRay Implementation (UDSonFR)
ISO 14230-4 Road Vehicles - Diagnostic Systems - Keyword Protocol 2000 - Part 4: Requirements for Emission-related Systems
ISO 15031-3 Road Vehicles - Communication between Vehicle and External Equipment for Emissions-related Diagnostics - Part 3: Diagnostic Connector and Related Electrical Circuits, Specification and Use
ISO 15031-4: 2014 Road Vehicles - Communication between Vehicle and External Equipment for Emissions-related Diagnostics - Part 4: External Test Equipment
ISO 15031-5: 2011 Road Vehicles - Communication between Vehicle and External Equipment for Emissions-related Diagnostics - Part 5: Emissions-related Diagnostic Services
ISO 15031-6: 2010 Road Vehicles - Communication between Vehicle and External Equipment for Emissions-related Diagnostics - Part 6: Diagnostic Trouble Code Definitions
ISO 15765-4 Road Vehicles - Diagnostics on Controller Area Network (CAN) - Part 4: Requirements for Emissions-related Systems
ISO 19689 Motorcycles and Mopeds - Communication between Vehicle and External Equipment for Diagnostics - Diagnostic Connector and Related Electrical Circuits, Specification and Use
ISO 22901-2 Road Vehicles - Open Diagnostic Data Exchange (ODX) - Part 2: Emissions-related Diagnostic Data
SAE J1850 Class B Data Communications Network Interface
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
motorcycle
According to GB/T 15089-2001:
Two-wheeled motorcycle (Type L3): if equipped with heat engine, its cylinder displacement shall exceed 50ml; or whatever driving mode is adopted, the maximum design speed shall exceed 50km/h.
Motorcycle with sidecar (Type L4): if equipped with heat engine, its cylinder displacement shall exceed 50ml; or whatever driving mode is adopted, the maximum design speed shall exceed 50km/h; as for such motorcycle equipped with sidecar, the three wheels are asymmetrically arranged in relation to the longitudinal median plane of the motorcycle.
Right three-wheeled motorcycle (Type L5): if equipped with heat engine, its cylinder displacement shall exceed 50ml; or whatever driving mode is adopted, the maximum design speed shall exceed 50km/h; as for such motorcycle, the three wheels are symmetrically arranged in relation to the longitudinal median plane of the motorcycle.
3.2
type test
the type approval test for new trial-manufactured product after completion of motorcycle type design to verify whether the product meets the technical requirements of this standard
3.3
gas fuel
liquefied petroleum gas (LPG) or natural gas (NG)
3.4
bi-fuel motorcycle
the motorcycles that can use either gasoline or a kind of gas as fuel, but cannot use them at the same time
3.5
mono fuel gas motorcycle
the motorcycles that can only use one kind of gas fuel (LPG or NG), or can use either gasoline or gas fuel (LPG or NG) but gasoline can only be used for an emergency or the start of engine
3.6
equivalent inertia
the mass equivalent to the moving and rotational inertia of the motorcycle in motion which is simulated by an inertia simulator on the chassis dynamometer
3.7
reference mass
the complete vehicle kerb mass of motorcycle plus 75kg (the mass of driver)
3.8
diluted gases
the mixed gas uniformly diluted by air after being discharged from the tailpipe of the motorcycle
3.9
gaseous pollutants
the carbon monoxide (CO), hydrocarbon compounds (HC) and nitrogen oxide (NOx) expressed by nitrogen dioxide equivalent in the tailpipe emissions. The assumed carbon-hydrogen ratio of hydrocarbon compounds is as follows:
——gasoline: C1H1.85;
——diesel: C1H1.86;
——liquefied petroleum gas (LPG): C1H2.525;
——natural gas (NG): CH4.
3.10
particulate matter (PM)
the exhaust composition collected by a filter according to the test method described in Annex C at the maximum temperature of 325.2K (52℃)
3.11
tailpipe emissions
the gaseous pollutants and particulate matter exhausted by motorcycle tailpipe
3.12
operating mode at normal idling speed or at high idling speed
operating mode at normal idling speed refers to the minimum steady operating state of no-load engine, namely, the engine is in normal operation, the gearbox is in neutral gear, the throttle control is at the minimum position, the choke valve is fully opened and the engine rotation speed meets the requirements of the manufacturer's technical document
operating mode at high idling speed refers to that the engine rotation speed is steadily controlled at the high idling speed specified in the manufacturer's technical document through adjusting the throttle control when complying with all above-mentioned conditions (except the throttle control position; for the motorcycle with automatic gearbox, the driving wheel shall be in free state); however, the high idling speed cannot be lower than 2 000r/min. The engine rotation speed, if not specified in the technical document, shall be controlled at 2 500±250r/min
Foreword i
1 Application Scope
2 Normative References
3 Terms and Definitions
4 Type Test and Test Information Disclosure
5 General Requirements
6 Type Test Requirements
7 Production Conformity Inspection
8 Motorcycle Type Extension
9 In-service Compliance
10 Standard Implementation
Annex A (Normative) Relevant Information of Type Test
Annex B (Normative) Type Test Result
Annex C (Normative) Emission Test for Tailpipe Emissions after Cold Start at Normal Temperature (Type I test)
Annex D (Normative) Test at Double Idling Speed or Test of Smoke Intensity at Free Acceleration (Type II Test)
Annex E (Normative) Emission Test for Evaporative Emissions (Type IV Test)
Annex F (Normative) Endurance Test of Emission-control Device (Type V Test)
Annex G (Normative) On-board Diagnostic (OBD) System
Annex H (Normative) Technical Requirements for Reference Fuels
Annex I (Normative) Production Conformity Assurance Requirements
Annex J (Normative) Type Extension Requirements
