Unit+13+悬架系统.docVIP

Unit 13 Suspension System第十三课 悬架系统 13.1 Suspension System Principles13.1 悬架系统原理 The suspension system supports the weight of the engine, transmission, car body, and whatever the car body is carrying. This system has parts that link the wheels and tires to the frame or unit body. 悬架系统支撑着发动机、变速器、车身以及车身所承载的所有重量。这个系统把车轮及轮胎和车厢或整体式车身连接在一起。 Springs are the key part of the suspension. They absorb the shocks of the road surface so that passengers have a comfortable ride. 弹簧是悬架系统的关键部件。它们吸收来自路面的振动，使得乘客乘坐舒适。 The suspension system has two subsystems-the front suspension and the rear suspension. There are a number of different suspension system types. There also are different types of springs that absorb road shocks. This unit discusses the most common types of suspension system. 悬架系统有两个子系统——前悬架和后悬架。目前有许多不同种类的悬架系统，也有不同种类的吸收路面振动的弹簧。本文主要讨论最常见的悬架系统。 13.2 The Front Suspension13.2 前悬架 The front suspension is more complicated than the rear suspension. This is because the front wheels must move in several different directions. The wheels must move up and down with the suspension and turn left to right with the steering. 前悬架要比后悬架复杂许多。这是因为前轮有好几个方向的运动。车轮必须要随着悬架系统上下运动，也要随着转向系统左右转动。 Since the car goes in the direction in which the front wheels point, the alignment of the front wheels is important. The wheels must point in just the right direction for the car to move straight down the road and turn properly. 汽车前进的方向就是前轮的指向方向，因此前轮定向就显得非常重要。前轮必须要指向正确的方向来使得汽车能够直线前进和正确的转弯。 Modern cars use an independent front suspension. In this system, each wheel mounts separately to the frame and has its own individual spring and shock absorber. Thus, the wheels act independently of one another. When one wheel hits a bump or hole in the road, the other wheel does not deflect. 现代汽车使用独立前悬系统。在这个系统中，每个车轮独立地与车架相连，有单独的弹簧和减振器。这样，车轮之间互不干扰。当一个车轮在路面上遇到凸起或凹坑，另一个车轮并不产生偏斜。 13.2.1 Types of Springs13.2.1 弹簧的类型 The spring allows the suspension to deflect when it hits a bu