According to relevant regulations, China fully implements the national emission standards for this year. For new products, the 3-standard model of China is the product that the diesel engine manufacturers worked hard in 2007. After the preparation in recent years, the national 3 diesel engines of major diesel engine enterprises such as Yuchai, Weichai, Xichai, Dachai, Chaochao and Dongfeng Cummins have formed a series of series. The 3-nation technology has transitioned from conceptualization and trial-type to a practical stage. It is worth noting that some small and medium-sized diesel engine-based engine companies also started to launch 3-standard diesel engines in China last year, indicating that these enterprises not only align their models with light trucks and light trucks Customers, but also for future small diesel engine to enhance emission standards for technical reserves, the group of diesel engine business to multi-cylinder machine after the transformation of another overall breakthrough. The extension of the country's standard diesel engine to the small diesel engine area will make the cost dilemma, which is already high in this area, even more prominent. Yangchai through the cooperation with AVL, the joint development of the country 3 standard diesel engine. At present, Yangchai has successfully developed the YZ4DB1-30 and YZ4DA1-30 engines using the electric single-cell pump technology, which is measured by the National 3 product system. The two countries 3 diesel engine has successfully entered the passenger car market. Quanchai has always been the supplier of Foton, FAW Hongta and Jianghuai. In 2007, in order to further accelerate the upgrading of products, Quanchai cooperated with Bosch of Germany and Shanghai Institute of Internal Combustion Engine to successfully develop the 3-series small bogie of 4D22E and 4D37E. With diesel engines, supporting a large amount of light-duty truck.