试题与答案

汽油机与柴油机的异同 项目汽油机柴油机不 同 点燃料气缸、构造工质压缩比点燃方式

题型:问答题

题目:

汽油机与柴油机的异同

项目汽油机柴油机

燃料  
气缸、构造  
工质  
压缩比  
点燃方式  
效率  
优缺点  
相同点  

答案:

答:

项目汽油机柴油机

燃料 汽油柴油 
气缸、构造气缸比较短,上方有一个火花塞气缸比较长,上方有一个喷油嘴 
工质 汽油燃气柴油燃气 
压缩比 4~6 15~18
点燃方式 点燃式压燃式 
效率 25%~40%35%~45% 
优缺点 汽油机震动小、转速高,适用于轿车和轻型车辆 柴油机功率大,经济性能好,适用于卡车和大型客车
相同点将内能转化为机械能;

燃烧化石燃料. 

将内能转化为机械能;

燃烧化石燃料.  

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