小型汽油机进气系统参数研究  

Study on the Intake System Parameters of Small Gasoline Engine

作　　者：何鹏[1] 李云清[1] 王宏楠[1] 王德福[1] 王金成[1] 

机构地区：[1]北京航空航天大学汽车工程系,北京100083

出　　处：《小型内燃机与摩托车》2008年第3期12-14,85,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：以发动机循环模拟软件BOOST为平台,建立了小型高速单缸汽油机的仿真模型,并通过实验对模型进行了验证。对不同进气管长度下发动机的工作过程进行了数值计算。当转速较低时,发动机每循环吸入空气量及扭矩随着进气管长度的增加有不同程度的提高;当转速较高时,发动机每循环吸入空气量及扭矩随着进气管长度的增加有不同程度的降低。进气管长度的增加还会使发动机的最大扭矩转速向低速偏移。计算结果为小型汽油机的改进和优化提供了依据。The simulation model of a small high - speed single cylinder gasoline engine was constructed based on Boost, which is a set of engine cycle simulation software. And the validity of the model was verified by experiments. Engine work process with different intake pipe lengths was numerically calculated. While at a low speed, the air mass trapped per cycle and torque of the engine become lower with the increase of the intake pipe length. Moreover, the increase of the intake pipe length reduces the maximum torque speed. The results provide theoretic guidance for the improvement and optimization of small gasoline engines.

关 键 词：汽油机 进气系统 扭矩 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]