Performance Development And Calibration On WD10 Electronic Controlled China â…¢ Diesel Engine

Energy and environment are the basis for human living and development. Because vehicles lies in an important status for energy consumption in the world, and its emissions are treated as one of the most pollutant sources that endanger the world's environment, to reduce the fuel consumption and emission of diesel engine is always the same goal for the whole society. Furthermore, the performance of diesel engine for use in vehicle will affect the automobile industrial's capability in the world's competition.Recent years, the development of exhaust gas reduction of direct injection (DI) diesel engine was promoted by exhaust legislation which is becoming more rigorous. The best method to reduce emissions is to purify the gases in cylinder. Based on this point, a complete new DI diesel engine combustion system is obtained, after redesigning and optimizing the fuel injection system, combustion chamber and air induction system. The best matched fuel injection system and combustion chamber can make the fuel and air to mix in a good state within finite volume and time, and thus make the engine achieving the ideal performance, fuel consumption, and lower noise emission and exhaust emission.A 3-D visualization model, using AutoCAD and Pro/E, was explored to analysis the matching of DI diesel engine jets and combustion chamber. Based on the principle of fully using the effective volume of combustion chamber and ensuring uniform mixture of fuel and air, the model, combining with different spray cone angle and nozzle tip penetrate of electronic controlled high pressure common rail system injector, helps to make jets axis distribute as equal-fuel/air ratio within combustion chamber。It results in much higher utilizing ratio of fresh air, more sufficient fuel air mixing, and better effect. Now this model has been used in practice, and gets notable effect.