专业英语第七章详解.ppt

Unit 7 Clutch Contents Pre-questions II. Text Explanation III. Exercises What will you do when you move the car？ What will you do when you change gears? Start the car Release parking brake and the clutch pedal and push down gas First gear Neutral position Depress the clutch pedal second gear Release the clutch pedal clutch Depress the clutch pedal First gear Where is the clutch in the automobile? Diagram of car showing clutch location A-engine B-clutch C-clutch pedal D-manual transmission Pre-questions What is the function of the clutch? Connect or disconnect the power from the engine to the drive line. Pre-questions How many main parts does the clutch consist of ? driving members driven members control mechanisms pressing mechanisms Pre-questions In a car, you need a clutch because the engine spins all the time, but the cars wheels do not. spin [spin] vt. vi.?使…旋转 译文：汽车上需要一个离合器，因为发动机一直在旋转，而车轮却不是（一直旋转）。 II. Text Explanation In order to stop without killing the engine, the wheels need to be disconnected from the engine somehow. somehow 以某种方式，不知怎么 译文：为了使停车时发动机不熄火，车轮需要以某种方式与发动机断开连接。 这句话中killing the engine 表示使发动机熄火 II. Text Explanation Somehow 我们必须设法在明天早上以前把工作做完。 We must get the work finished somehow by tomorrow morning. 不知怎么地我们迷了路。 Somehow we lost our way. The clutch（shown in Fig. 3-2） allows us to smoothly engage a spinning engine to a non-spinning transmission by controlling the slippage between them. slippage [’slipid?] n.??滑动 译文：离合器（图3-2所示）允许我们将旋转的发动机和不转的变速器平稳地连接起来，这种连接通过控制它们之间的相对滑动来实现。 II. Text Explanation Fig. 3-2 Clutch 1-pressure plate; 2-driven disk; 3-flywheel; 4-clutch cover Most cars equipped with a manual transmission use a single clutch disc, a diaphragm type spring，a pressure plate and clutch cover assembly, a clutch release bearing, and a clutch release fork. single clutch disc 单片离合器盘 diaphragm type spring 膜片式弹簧 pressure plate 压盘 clutch cover 离合器盖 release bearing 分离轴承 release fork 分离叉 II. Text Explanation driven disk Pr