四缸发动机一缸上止点时,其他三缸的凸轮处于什么状态?

2025-03-12 09:17:09
推荐回答(1个)
回答1:

4缸发动机工作顺序是 1 2 4 3. 曲轴转2圈一个工作循环,720度除以4,等于180度. 每个曲柄相差

180度. 所以,四个曲拐都在一个平面. 1,4缸的曲拐朝一个方向, 2,3缸的曲拐180度 朝另一个方向 . 

所以一缸上止点,也是四缸的上止点.   当1缸压缩终了时,2缸进气完毕,准备压缩. 排气门关,进

气门还未关严.   3缸做工完毕,准备排气. 进气门关,排气门已开   4缸排气完毕,准备进气. 进排气

门叠开   当4缸压缩终了时,2缸做工完毕,准备排气. 进气门关,排气门已开   3缸进气完毕,准备压

缩. 排气门关,进气门还未关严.   1缸排气完毕,准备进气. 进排气门叠开   6缸发动机工作顺序是

1.5.3.6.2.4. 也有日本发动机是1.4.2.6.3.5.   同样720度除以6 等于120度. 所以6缸发动机1.6缸曲

柄在一个平面,2.5缸曲柄一个平面,3,4缸曲柄一个平面. 3组相差120度排列   同样1缸上止点也是6

缸上止点   当1缸处于压缩终了时,2缸做功结束,正在排气,进气门关   3缸正在进气, 排气门关 

4缸做功即将结束,排气门马上开启,进气门关   5缸开始压缩,进气门刚关闭, 排气门关   6缸

排气完毕,准备进气. 进排气门叠开

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