如今,四轮驱动已经不再是一个陌生的名词,它早已超越越野车的范畴,在休闲车中大行其道。现代四轮驱动汽车多采用常啮合式四轮驱动方式,可以自动转换驱动形式。这是因为,它有一个起关键作用的部件叫做粘性偶合器,又称为粘性联轴器。 粘性偶合器的工作原理是利用液体的粘性成油膜的剪切作用 Today, four-wheel drive is no longer a strange term, it has already exceeded the category of SUVs, popular in recreational vehicles. Modern four-wheel drive vehicles often use four-wheel drive mode, you can automatically convert the drive form. This is because it has a key component called a viscous coupling, also known as a viscous coupling. The working principle of the viscous coupling is to use the viscosity of the liquid to shear the oil film