According to relevant provisions of China's full implementation in the country this year, 3 emission standards on new products, the three models is the standard diesel engine business in 2007 to fight products. After recent years of preparation, Yuchai, Weichai, Xichai, the Chai, Chai North Korea, Dongfeng Cummins diesel engine, and other major enterprises of the country has developed three series diesel engine, the three technologies from conceptualization, the trial of the transition to a practical stage.

     3 cope with the heavy-duty diesel engine emissions standards do not, it is noteworthy that some of the mainly to small and medium-sized diesel engine business in the country last year have begun to three standard diesel engines, these enterprises will be in addition to its own models at the light truck, Light off, also for the future of small diesel engine emission standards for upgrading the technical reserves, is the group enterprises to multi-cylinder diesel engine for the overall transition after another breakthrough. 3 of the standard diesel engine to extend the area of small diesel engines, will enable this area to the high cost of no less than the predicament of the more prominent.

     Yang Chai cooperation with the AVL Company, the joint development of the three standard diesel engines. At present, Yang Chai has been successfully using the Electronic Control Unit Pump technology developed YZ4DB1-30, YZ4DA1-30 engine, through the system of three products. The two countries have successfully broke into three diesel bus market. Chai has been a full-Beijing auto Fukuda, FAW Hongta, the Jianghuai suppliers, 2007, in order to further accelerate the upgrading of products, all with the German Bosch Chai, Shanghai Institute of the internal combustion engine, successfully developed a 4 D22E, 4D37E of the three series of Small-bore diesel engine vehicles, matching the light of Damian-laden car. Chang Chai 300,000 Taiwan-based multi-cylinder (a) work on December 28, 2007 production, the major producers 3, 4 of the multi-cylinder diesel engine.

     The project a total investment of 160 million yuan project, when completed, will comprehensively enhance the multi-cylinder machine product grades, and the ignition of 4 B28TC common rail diesel engine is in Austria to carry out technical assessment of AVL on the basis of a Bosch common-rail system completed The.

     Light commercial vehicle is the standard practice of the three most difficult sections. According to China's Internal Combustion Engine Industry Association chairman Ni Hongjie analysis of the current implementation of the three countries there are two main problems: one is oil, many small and medium-sized cities to oil supply, China's use of three standard diesel engine standards of ordinary diesel vehicles , The emission standards than the three low, but higher than the 2 on the life of engine parts and components to a certain degree of impact. Another problem is cost, electronic injection system, whether common-rail system or single pump system, to increase the cost of many, speaking also for heavy vehicles can accept, but for light vehicles, if the engine plant To adopt common-rail system, a set of Bosch's common rail systems in the prices of 6,000 yuan to 8,000 yuan, a four-cylinder engine for the light vehicles sold how much money, it is 6,000 yuan, and some are even lower, Si Wuqian yuan, if we use common-rail system, the cost of the engine will be doubled, automobile plant is not acceptable, because a light vehicles sold in the market also San Siwan yuan.

     Of course, domestic manufacturers have developed out of common rail systems, but the lack of bulk. In addition, the domestic manufacturers by lower prices of jet fuel in research and development programmes are. Overall, despite the implementation of the light vehicles from 3 emission standards for a few months time, but the cost factor of a difficult situation can not be fundamentally alleviated.