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Unit Five

汽车实用英语 Practical Automobile English. Unit Five. Engine Fuel System. 5.1 Presentation. 5.2 Text review Qu.4: What are the function of the tappets, the push rods and the rockers respectively ?. the tappets 挺柱； the push rods 推杆； the rockers 摇臂； respectively 分别的，各自的. 挺柱、推杆和摇臂各自的功能是什么？.

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Unit Five

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  1. 汽车实用英语 Practical Automobile English Unit Five Engine Fuel System

  2. 5.1 Presentation

  3. 5.2 Text review Qu.4: What are the function of the tappets, the push rods and the rockers respectively? the tappets挺柱；the push rods推杆；the rockers摇臂； respectively分别的，各自的 挺柱、推杆和摇臂各自的功能是什么？

  4. The tappets serve to transmit the force from the camshaft to the push rods. The tappets挺柱；serve起作用；transmit传递；force 力； the camshaft凸轮轴；the push rods推杆. 挺柱把凸轮轴的作用力传递给推杆。

  5. The push rods transmit the force from the tappets to the rockers. The push rods推杆；transmit传递；the force作用力；the tappets挺柱；the rockers摇臂。 推杆把挺柱的作用力传递给摇臂。

  6. The rockers transmit the force from the push rods to the valve. the rockers摇臂；transmit传递；the push rods推杆；valve气门。 摇臂把推杆的作用力传递给气门。

  7. The features of the valve system Open and close the valves at just right time. Remove the burned gases as much as possible and increase the volumetric efficiency（充量系数）.

  8. 各部件联合工作过程： 力 力 凸轮轴 挺柱 推杆 力 力 气门 摇臂 回复力 弹簧

  9. working process of valve system： force force push rod camshaft tappet force force valve rocker reciprocating force spring

  10. 5. 3 New Words and Expressions 汽化器 化油器 carburetor

  11. 喷油器 喷嘴 注射器 injector inject

  12. 喷嘴，管嘴 nozzle

  13. 隔板，障板 baffle

  14. 给…..装铰链 用铰链接合 hinge

  15. 漂浮 浮舟 float

  16. 仪表板 车前挡泥板 dashboard

  17. 真空 空间 真空吸尘器 vacuum

  18. 叶轮 叶轮片 impeller

  19. 分离器 离析器 脱脂器 separator separate 油气分离器

  20. 调节器 调整仪 regulator

  21. 污染 污染物 contamination = pollution contaminate = pollute

  22. 过滤器 滤光器 filter

  23. 文氏管 喉管 扩散管 venturi

  24. 喷油泵 fuel injector pump

  25. 节气门 throttle plate

  26. 5.4 Read the text of page 51 for five minutes: (1)The main components of the engine fuel system; (2)The process of the fuel flow; (3)The function and construct of The fuel tank.

  27. Qu.1:What are the main components of the engine fuel system？ component 构成；fuel system 燃油系统； The fuel systemconsists of the fuel tank, lines, pump, filter, carburetor and injectors. 汽车燃油系统的主要构成部件。 汽车燃油系统主要由燃油箱吗，燃油管线，燃油泵，燃油滤清器，化油器和喷油嘴等构成。 consist 组成，包含；fuel tank 油箱；line 管道； pump 泵；filter 过滤器； carburetor 化油器；injectors 喷油器.

  28. fuel tank fuel pump carburetor store fuel draw fuel keep air-fuel ratio Qu.2:What are the features of the fuel flow？

  29. Qu.3: Why does the baffles are set inside the fuel tank？ There are several baffles insides the fuel tank to restrict fuel movement during rapid starts and stops, cornering, and so on. 为什么在油箱内侧安装隔板？ 油箱内安装一些隔板是为了减轻汽车在快速启动和停车，转弯等过程中燃油的振动。 baffle 隔板；set 安装； inside 内部；fuel tank 油箱；restrict 减轻，限制；rapid 快速的；cornering 转弯；

  30. 油箱隔板

  31. Read the text of page 52 about the fuel pump for five minutes: (1)The types of the fuel pump; (2)The types of the electrical fuel pumps; (3)The features of the fuel pump.

  32. Qu.4: What kind of gasoline pumps are used commonly？ Gasoline engine pump is either mechanical or electrical. kind 类型； fuel pump 燃油泵；commonly 通常；gasoline 汽油；mechanical 机械的；electrical 电动的； 汽油泵通常有哪些种类？ 汽油泵要么是机械的要么是电动的。

  33. 机械驱动式汽油泵

  34. 电动式汽油泵

  35. Qu.5: What types of electrical fuel pumps are used commonly？ The types of the electrical fuel pumps employed includethe bellow and the impeller or roller vane. 电动燃油泵通常有哪些？ 常见的电动燃油泵包括伸缩管式和叶轮式的。 types类型；electrical fuel pumps电动燃料泵；employ雇佣，采用；the bellow and the impeller 伸缩管式；roller vane叶轮式.

  36. 伸缩管式电动燃油泵

  37. 叶轮式的电动燃油泵

  38. Qu.6: How to keep the fuel pressure constant ？ Fuel systems that have electrical fuel pumps and fuel injectors may use a fuel pressure regulator to keep the fuel pressure constant. 油泵怎么保持油压稳定？ 使用电动燃油泵和喷油器的燃油系统通常会采用燃油压力调节器来保持油压恒定。 pressure压力；constant持续的；electrical fuel pumps电动燃油泵；fuel injectors喷油器；regulator调节器；

  39. Read the text of page 52 about the fuel filter for five minutes: (1)The function of the fuel filter; (2)The feature of the fuel filter;

  40. Qu.7: What is the function of the fuel filter？ Fuel filters are used tostop any contamination from getting into the fuel system of both gasoline and diesel engines. 燃油滤清器的功能是什么？ 燃油滤清器是用来阻止任何污染进入汽油发动机和柴油发动机的燃油系统。 function功能；filter滤清器；contamination 污染；both 两者都；gasoline汽油；Diesel柴油

  41. Qu.8: What are the differences of the fuel filter between the gasoline engine and the diesel engine？ The gasoline engines may have one or two filters in the fuel system, while the diesel engines have only one. 汽油发动机和柴油发动机的燃油滤清器有什么不同？ 汽油发动机有一到两个燃油滤清器，而柴油发动机只有一个。 differences差别；gasoline汽油；Diesel柴油；filter滤清器；contamination 污染；while然而

  42. Read the text of page 52 about the carburetor for five minutes: (1)The function of the carburetor; (2)The feature of the carburetor;

  43. Qu.9: What is the function of the carburetor？ Carburetors used on gasoline engine are designed to mix the air and fuel at the correct ratio. 化油器的功能是什么？ 汽油发动机中使用化油器来将空气和燃油以适当的比例混合。 carburetor化油器；designed设计；mix混合，correct ratio恰当的比例。

  44. Qu.10: What is the best air-fuel ratio？ The most correct air-fuel ratio is 14.8 part of air to 1 part of fuel. ratio 比例；correct合适的； 最好的空气-燃油比是多少？ 最合适的空气-燃油比例是14.8份空气对一份燃油。

  45. Exercise： Choose the correct word to match the sentence. pump; filter; ventrui; discharge pump filter ventrui discharge ①machine that transforms mechanical energy generated by a prime mover into the energy of a moving fluid. ②device for remove dirt or suspended particles in a liquid or in the air. ③a short tube with a constricted passage that increases the velocity and lowers the pressure of a fluid conveyed through it. ④to pour out (a liquid) as from a pump.

  46. JASP 进气口二次空气喷射 Jet Air Suction Port JOM 工作业务手册 Job Operations Manual LDCL 左门关闭锁止 Left Door Closed Locking

  47. LDP 泄露检测棒 LDP Leak Detection LHC 液态氢容器 Liquid Hydrogen Container LFO 低频振荡器 Low-Frequency Oscillator

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