柴油机各缸工作不均匀程度对性能的影响分析 - 交通运输工程学报.PDF

第 1卷　第 3期 交 通 运 输 工 程 学 报 Vol. 1　No. 3 2001年 9月 Journal of Traffic and Transportation Engineering Sep. 2001 : 16 1-163 ( 2001) 03-0050-04 李建秋,欧阳明高,周　明,李希浩 ( ,　100084) 　: 利用飞轮处的瞬时 速信号来间接估计柴油机的各缸工作不均匀程度,结合基于电磁阀的 时间控制式电控燃油喷射系统,实现了柴油机各缸工作不均匀程度的闭环反馈控制。 在此基础上, 通过台架试验分析了各缸工作不均匀程度和发动机性能之间的关系。结果表明,在发动机的大负荷 工况下,各缸工作不均匀程度对发动机的经济性和烟度排放影响显著,从而验证了实现柴油机分缸 均匀性实时检测和闭环控制的重要性。 : 各缸工作不均匀程度;瞬时 速;闭环控制;柴油机 : U464. 1 2　　　: A Influence Analysis of the Cylinder-by-cylinder Variations Upon the Performance of Diesel Engines - , - , , - L I J ian qiu OUYAN G M ing g ao Z HO U M ing L I X i hao ( National Key Laboratory of Automotive Safety and Energy , Tsinghua University , Beijing 100084, China) : - - Abstract The cylinder by cylinder variations are detected by using the momentary flywheel . speed signal on a diesel engine Combining a solenoid based electronically controlled fuel injection system the closed-loop control of the variations is achieved. Then the relationship betw een the extent of variations and the engine performance is investigated on the engine test bench. The results indicate that the variations significantly influence the engine performance at heavy load condition. It verified the necessary of the no-board detection and control of the variations on diesel engines. : - - ; ; - ; Key words cylinder by cylinder variation momentary speed closed loop control diesel engines 　　, 、 [ 1～ 3] , 。 。, ,。 。 、,