EURO III LEVEL MOTORCYCLE EMISSION LEVELS CONFIRMED FOR CHINA
The Chinese EPA have published the new Motorcycle Emission Standards GB 14622 2007 to be introduced for new models from January 1st, 2008 onwards.
The emission levels are based on the current European Stage III emission standards. The introduction of these emission standards, plus the inclusion of emission durability requirements makes the Chinese motorcycle emission control requirement one of the most stringent in the world. The test cycle for larger displacement motorcycles is modified to suit the local requirements by reducing the maximum speed in the cycle 90 kph.
Motorcycle Description Limit for Emissions (gm/km) CO HC NOx <150cc (UDC) 2.0 0.8 0.15 >=150cc (UDC + EUDC) 2.0 0.3 0.15 UDC: ECE R40 test cycle, sample from T=0 second UDC + EUDC: ECE R40 + EUDC test with max speed set at 90kph, sample from T=0 second
As in Europe, the introduction of the more stringent emission standards is driving the shift from carburettor to Engine Management Systems (EMS) using Port Injection or other electronic control of the fuel metering, especially for motorcycles greater than 150 cc.
EMS systems enable much tighter control of the emissions and the exhaust catalyst performance; EMS systems also enable much better control emission capability over the vehicle life, as called for in the China regulations (up to 30,000 kms for performance motorcycle).
Synerject, the 50:50 Joint Venture Partnership between Orbital and Siemens VDO is very active in China, working with the major Chinese motorcycle manufacturers. Synerject recently opened it's Chongqing Test and Application Engineering Centre, equipped with dedicated state-of-the art engine and vehicle test and calibration equipment needed to customize and calibrate motorcycle engines to meet the legislated and customer requirements. In addition, Synerject are now manufacturing Electronic Control Units (ECU's) in China to support both the China domestic, and the international market.
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