汽车专业英语详解.ppt

Figure 4-14 The drive shaft and U-joints provide a means of transferring engine torque to drive axles. The universal joints allow the drive shaft to move up and down, to allow for suspension travel. Some drive shafts also have a slip joint that allows the drive shaft to make minor length changes as the car suspension height changes. Differential System The differential is mounted in a housing or a differential case and revolves with the ring gear. See figure 4-15. It performs two tasks: when the car is traveling straight ahead, both wheels are free to rotate, the lever will divide the diving force equally, and both disks will move the same amount. When a car is cornered, the inner wheel moves through a shorter distance than the outer wheel. This means that the inner wheel must slow down, and the outer wheel must speed up. Figure 4-15 Notes: 1. In order for a car to stop without killing the engine, the wheels need to be disconnected from the engine somehow. 要使汽车停下来而不伤及发动机，必须设法让车轮与发动机脱离。 2. The clutch allows us to smoothly engage a spinning engine to a non-spinning transmission by controlling the slippage between them. 离合器通过控制在两者之间产生的滑动使旋转的发动机与非旋转的变速器平顺啮合。 3. When the clutch pedal is depressed, the release bearing moves toward the flywheel, pushing in the pressure plate’s release fingers and moving the pressure plate fingers or levers against pressure plate spring force. 踩踏离合器踏板时，分离轴承朝飞轮方向移动，推入到压盘分离指中，使压盘分离指抵住压盘弹簧力。 4. Some drive shafts also have a slip joint that allows the drive shaft to make minor length changes as the car suspension height changes. 一些驱动轴还有伸缩接头，使驱动轴在汽车悬架高度变换时长度有小的变化。 shift valve 换挡油阀，换挡阀 fuel economy 耗热率，燃油经济性 torque converter 液力变矩器 low range 低速挡，低挡 shift lever 变速杆 gear ratio 齿轮数比，速比，减速比 planetary gear set 行星齿轮组 sun gear 太阳齿轮，横行齿轮 planet gear 行星齿轮 constant mesh 经常啮合 EXERCISE 1 Mark the following statements with T (True) or F (False) according to the passage. EXERCISE 2 Translate the following phrases into Chinese or English. 1. R