4G15M发动机和4G15S发动机有哪些特点?

2025-03-14 22:24:14
推荐回答(2个)
回答1:

4G15系列拥有SOHC(单顶置 凸轮轴 )和DOHC(双顶置 凸轮轴 )两款机型。4G15M的特点是双顶置凸轮轴的,而4G15S的特点是发动机是单顶的,区别在于双顶的4G15M噪声小,加速性快,更省油;而4G15S的特点是发动机是单顶的,其实属于SOHC—4型发动机。

DOHC和SOHC两个原厂设定发动机放在一起对比的话,无论哪个方面都绝对是SOHC占优的,但若要疯狂改装高转渣马力的话,SOHC就不用比了。另外从发明时间来说2者是同一时期的。只是从名字上解释2个凸轮轴好象比较先进,但是DOHC工艺复杂,维护成本高这些可能大家没注意到,而SOHC在这方面是占优势的。 

SOHU与DOHC的优缺点比较: 

单凸轮轴机械结构简单,问题比较少,低转速扭力较大。单凸轮轴的进排气门开启时间是固定的,但是机械结构简单,维修容易,经济省油都是单凸的优势。

双凸轮轴因为可以改变汽门重迭角,所以可以发挥出比较大的马力,但是低转速的扭力比较不足 而且也因为机械结构的复杂会造成维修上一定的困难。双凸轮轴的技术来自于赛车,主要是可以控制进气门跟排气门的时间差。 

单凸双凸没有所谓的好坏,只是结构不同。

回答2:

4g15m活塞比4g15s的活塞长,后者比前者的转速要高,扭力要大一些

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