汽车专业英语.ppt

A: Of course, it’s my pleasure. We can simply say that if you have a manual car, you have to shift the gears yourself, and it will be more complicated. But you will have more fun of driving. B: What about automatic car? A: If you have an automatic car, the mechanism changes without any help from you. This kind of car will be more convenient, and it is more suitable for a woman. B: Thank you for your introduction. A: You are welcome. Sample dialogue 2: A: Welcome to our company. What can I do for you? B: I think there is something wrong with my car bought last month. A: What has happened？ B: When I started my car, the clutch connected unstably, and the car shaked tightly. A: Let me have a look at it. B: Thank you! A: You see, the bolt on the engine became less crowded, and I will change a new one for you. Don’t worry. B: Thanks a lot! A: You are welcome! 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 betw