汽车专业英语_课件第2章.pptVIP

lag n.; v. 落后，迟延；滞后 hesitation n. 犹豫，踌躇 stumble v. 绊倒，蹒跚，踌躇 enrichment n. 加浓 stumble v. 绊倒，蹒跚，踌躇 enrichment n. 加浓 prematurely adv. 过早地，早熟地 venturi n. 吼管，吼道 　　Phrases and Expressions 　　fuel tank 燃油箱 　　fuel filter 燃油滤清器 　　fuel pump 燃油泵 　　fuel line 　　　油管 　　fuel supply system 燃油供油系 regardless of 不管，不顾 corrosion-resistant 防腐性的 ventilation system 通风系统 　　vapor lock 气阻，气塞 　　float chamber 浮子室 　　idle system 怠速系统 　　main metering system 主计量系统 　　pump system 油泵系统 　　choke system 阻风门系统 　　main nozzle 主喷管 　　main jet 主量孔 　　main well (化油器)主油井 　　Notes on the Text 　　1．The purpose of the supply system is to store and then to supply a clean, comtinuous, and adequate amount of fuel under sufficient pressure to the carburetor. 　　燃油供给系统的作用是存储燃油，然后在足够的压力下将清洁的、连续的、足够的燃油输送到化油器。 　　2．The exposed half-section is usually constructed of a heavier steel than the unexposed section for protection against road damage and corrosion. 　　从结构上讲，燃油油箱的外露部分比内藏部分用的钢铁材料更厚重，以防止腐蚀损坏和道路碰撞损坏，从而保护油箱。 　　3．Finally, electrical fuel pumps eliminate, in many cases, the problem of vapor locking that can be a problem for engines with mechanical fuel pumps. 　　最后，在多数情况下，电控油泵解决了机械式油泵的气阻问题。 　　4．When the driver opens the throttle valve rapidly, from a closed or nearly closed position, in order to accelerate the vehicle, engine vacuum rapidly drops; but the air flow through the carburetor throat increase instantly. 　　为使汽车加速，驾驶员将节气门从关闭或接近关闭的位置迅速开启，使得发动机的真空度迅度下降，但通过化油器吼管的气流却得到了迅速的增加。 Exercises 　　Ⅰ. ?Answer the following questions in English. 　　1．List the components of the engine fuel system? 　　2．List the components of the engine fuel supply system? 　　3．What is the purpose of the fuel tank ventilation system? 　　4．How many advantages of electrical-type fuel pumps offer over the mechanical fuel pump? 　　5．What is the function of a carburetor? 　　Ⅱ．Translate the following into Chinese. 　　1．fuel filter 　　2．combustible 　　3．fuel pump 　　4．choke system 　　5．float chamb