汽车专业英语(共2页).doc

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1、精选优质文档-倾情为你奉上Gasoline Fuel SystemWords and Expressionsengine knock 发动机爆震(燃),发动机敲缸octane number 辛烷数,辛烷值excess air ratio/factor/coefficient 过量空气系数weak mixture 稀混合气rich mixture 浓混合气throttle valve 节气门,油门, 节流阀fuel management 燃油消耗量调节，耗油量控制ignition advance (angle) 点火提前（角）dwell angle 持续角reference mark 参考点，标

2、记，基准part-load 部分负荷full load 全负荷susceptibility n.敏感度,敏感性exhaust gas recirculation(EGR) 废气再循环open-loop system 开环系统closed-loop system 闭环系统tank ventilation 油罐通风（换气）ignition timing 点火正时，点火时间 actuator 调节器，执行器inductive sensor 感应传感器angular velocity 角速度analog to digital converter 模拟数字转换器digital signal proces

3、sing 数字信号处理（技术、方法）word length 字长quartz-clock 石英钟gasoline direct injection (GDI) 缸内直喷式汽油机系统fuel consumption 燃油消耗engineer v. 设计、策划deploy v.使用，展开governor 调速器variable-speed governor 全程式调速器minimum-maximum-speed governor 两级式调速器combination governor 复合式调速器driveability 驾驶性能，操纵性能，操纵灵活性turbocharger 涡轮增压器servo

4、solenoid valve 伺服电磁阀relief valve 溢流阀tail pipe 排气尾管muffler 消声器three-way catalytic converter 三元催化转化器Reference:1. The Motronic system is an engine-management system comprising a control unit (ECU) which implements at least the two basic functions ignition and fuel injection, but which, however may cont

5、ain additional subsystems as required for improved engine control.2. The main parameters which effect the combustion process are detected as measured values and processed together such that the optimum ignition and injection timing is calculated for instantaneous engine operating conditions.3. Where

6、as a slightly different allocation in the part-load range normally only increases consumption or exhaust emissions, at full load near the knock limit the susceptibility to engine knocking increases.4. This combination of subsystem makes sense from a physical standpoint: it enables a basic system (ig

7、nition and fuel injection) with open-loop functional control as well as an expanded system(incorporating knock and lambda controls) with closed-loop functional control in a management system.5. Systems which use input and output signals different from those used by the Motronic system but which requ

8、ire very limited data exchange with the Motronic system are not integrated but rather are connected with the Motronic system via interfaces.6. In direct injection engines, injection typically occurs during the intake stroke and a very short time compared to the 720 an MPI engine typically has for fu

9、el delivery.Exercise1.Translate the following expressions or passages into English or Chinese.(1)节气门位置传感器；进气歧管压力传感器；燃油消耗；参考点；空燃比；化油器式燃油系统；模数转换器；可编程序控制器；数字信号处理；点火正时(2)电子控制汽油喷射系统能按照不同工况较为精确地供给发动机最佳比例的混合气，因此大大改善了发动机的动力性、经济性和排放性能。(3)Fuel delivery is controlled by the injectors which are cycled by the co

10、mputer. The computer produces a signal to open the injectors for a certain length of time depending on engine conditions relayed by sensors.(4)The injection pump in the jerk pump(脉动作用泵, 高压燃油喷射泵) system is used to time, meter and pressurize the fuel. This is the most common and utilized system. The p

11、lungers are driven by a camshaft that is designed to control the injection characteristics of the engine.(5)Once throttle opening and rpm are reduced to cruising conditions, most systems will jump back into the closed loop mode where they will stay for a large portion of the time on most street driven applications.专心-专注-专业