汽车专业英语第五章.pptVIP

电动转向助力系统正逐步代替液力转向系统并注定很快在汽车制造业中成为主流．电动转向助力系统不需要发动机动力驱动．这样，装备电动转向助力系统的汽车可以比装液力转向系统的同类型车辆节约大约３％的燃油． Active Front Steering主动前轮电动转向系统 At low-speed driving in city traffic, when much steering work is necessary, the use of the electric motor provides for a smaller number of steering wheel turns with the same effort required. At high speeds , however, the driver no longer needs to fear that he or she will lose control of the vehicle as a result of a steering motion. 在市内运输中低速行驶需要大量转向操作，使用电动机，同样的转向力矩方向盘转动角度较小．高速行驶时，有了这种转向装置，驾驶员不必再担心车辆失去控制． Electric Power Steering by wire （EPS-by wire或SBW）线控电动转向系统 The Active steering is a first step to the steer by wire function; so fundamental steer by wire functions can definitely be implemented at this early stage, also with regard to the capability of integration into a net work and signal processing. 主动电动转向系统是实现线控转向功能的第一步，线控转向的基本功能，也就是关于网络和信号处理的综合能力，在这一步得到明显的应用． CHAPTER 5 STEERING AND SUSPENSION SYSTEM 5.1 Basic parts of steering system  The basic steering system in most cars is the same. The steering gear of steering box is the heart of the steering system. This usually is next to the engine. A shaft extends from the back of the steering gear. This shaft is connected to the steering column or steering shaft. The steering wheel is at the top of the steering column. Another shaft comes from the bottom of the steering gear. This shaft connects to the arms, rods, and links. This parts assembly, called the steering linkage, connects the steering gear to the parts at the wheels. The wheels and tires mount to the steering knuckles. As shown in Fig. 5-1, the knuckles are pivoted at the top and bottom. Thus, the wheels and tires can turn from side to side. 多数汽车的转向系基本上是一样的。转向系的核心是转向器，一般位于发动机附近。一根轴从转向器后部伸出，连接着转向柱。方向盘在转向柱的顶端。另一根轴从转向器低端伸出，连接着转向臂、转向拉杆和转向杆系，这些部件总称为转向传动机构，连接转向器和车轮上的部件。车轮和轮胎安装在转向节上。如图5-1所示，转向节的上下端可自由转动，这样车轮可从一侧转到另一侧。 While the steering system may look complicated, it works quite simply. When a driver drives a car straight down the