The project for this year will continue to assist the EPA with the management of motorcycle exhaust pollution, including the certification of new vehicle model, the audit of new vehicle, examination on emission control components, etc., the project will implement the recall investigative tests for the in-used motorcycles. Until now, the project had issued 120 certificates, including 444 vehicle models. The project also had completed audits for 14 domestic motorcycles and 15 imported motorcycles, Twenty-seven of them had passed the tests. The project also had examined 7 motorcycles for their emission control components, all of them pass the examinations. The manufacturers had applied for 23 pieces of endurance tests this year. We also analyzed the USA and the EU 2004 model year motorcycle certification data. The 15 quantities of high displacement motorcycles and 15 quantities of 4th stage in-used motorcycles research tests and analysis showed that the EU3 emission regulations are more stringent than our 4th stage emission regulations. The endurance test results of 4 quantities of vehicles showed fluctuant variation among the mileage. We had development our domestic motorcycle exhaust emission estimation model with reference to the COPERTⅢ model. The emissions estimated all the year round are 218968, 68625, and 4970 tons/year for CO, HC, and NOx respectively. In the item of simplifying flow chart of certification process, the application time was 8.4 days. For the in-used vehicles investigation tests, all the 10 engine families had passed the tests. Besides, one engine family shall execute self-recall project because it’s inconsistent in exhaust pipe between new vehicle audition and certification document. The self-recall project is still proceeding.

new model certification,random inspection on new vehicle,n-used motorcycle