ON D.I. DIESEL ENGINE

Yan Wei

(School of Electronic and Information Engineering, Tongji University, Shanghai 200092)

Zhang Hao

(Department of Information and Control Engineering, Shanghai University of Electric Power, Shanghai 200092)

Lu Jiangfeng  Zhao Rongyong  Zhang Hui

(School of Electronic and Information Engineering, Tongji University, Shanghai 200092)

Abstract: The uniform distribution and experimental design (U-D design) experiments are made on a small D.I.(Direct injection) diesel engine consisting of the shallow W combustion system. The table of U-D design carries out the experiments on the combustion system parameters such as combustion chamber diameters, nozzle hole diameters and nozzle reach, which have influence on the engine’s performances. The better matching schemes are given by the regression analysis. The single factor experiments display that the combustion chamber has important function on engine’s performances. Thinking of the interactive effects, the parameters of nozzle hole and nozzle reach are selected with the combustion chamber. At last, the excellent performances of shallow W combustion system and the valuable conclusions are obtained. It also shows that the U-D design finds out the immanent rules of experiments. The U-D design is an excellent method to arrange multiple levels’ experiments.

Key words: U-D design  Shallow W combustion system  D.I. (Direct injection) diesel engine

CLC No: TK427

山东省中青年科学奖励基金资助项目(01BS37). Received 20040401, received in revised form 20040927