This project with the extensively collected information of emission standards, control measures and testing methods of diesel and alternative fuel engine vehicle from European , U.S. and Japan, and the technology development information from diesel engine manufactures, we analyze and reference the above information and then to draft proposal for diesel vehicle stage 5 emission standards. The stage 5 standards apply to passenger car, light-duty diesel trucks and heavy-duty diesel engine. The new regulatory proposals cover exhaust emission standards, fuel requirement, practice schedule and testing methods. Testing equipment suggestion for stage 5 standards will also be included. Main achievements: 1.We held seminars and had adequate and fruitful communication and discussion with manufactures. 2.The diesel vehicle stage 5 emission standards , not only refers to European 2008 EURO 5 emission standards and U.S. 2007 heavy-duty engine emission standards, but also adopt OBD (On-Board Diagnostic) regulations. 3.We accomplished the analysis about the difference between domestic testing equipments and abroad equipments. 4.We proposed the diesel vehicle smoke testing procedure for those equipped with VAS (Vehicle Stability Assist) or 4WD(four wheel drive). 5.We completed the analysis of possible impact on the environmental contamination and domestic economic in case of practicing the diesel vehicle stage 5 emission standards. Other suggestions: 1.At the same time of taking effect The diesel vehicle stage 5 emission standards, government shall also supply sulfur-free diesel fuel to consumers. In addition, the delivery, storage and safety requirements of reagent (e.g. urea) requirement for exhaust aftertreatment system should also put into consideration. 2.To introduce OBD inspection program that combine future in-use diesel vehicle emission periodical test program by chassis dynamometer smoke test station. 3.To set up contact windows with testing equipment manufactures for continually collecting information of equipment upgrades, and search possible funds resources for testing equipment at the same time.

mission standards, testing cycle, passenger car, light-duty turck heavy-duty diesel engine, OBD