1-Unit 2.pptVIP

Unit 2 EFI System The Parts of A Fuel System （燃油系统部件） The Parts of A Air Induction System  （进气系统部件） Translation Skill (2)词义的选择 二、同一词类表达不同词义 英语中同一个词，同一类词，在不同的场合，往往具有不同的含 义。此时，必须根据上下文的联系及整个句子的意思加以判断和翻 译。例如 “as” 这一连词。 例如： 1. The volume varies as the temperature increases. 译：体积随着温度增加而变化。（as引导时间状语从句） 2. As heat makes things move, it is a form of energy. 译：因为热能使物体运动，所以热是能的一种形式。 Exercises（练习）1.Translate the following into Chinese 2.Translate the following into English 3.Translate the following sentences into English * * EFI system is composed of 3 basic sub–systems: Fuel, Air Induction and Electronic Control Systems. An EFI system is shown in Fig. 1-2-1 1. Electronic Control System The Engine Electronic Control System consists of various sensors, switches and actuators. The various sensors detect the intake air pressure, engine speed, oxygen density in the exhaust gas, engine coolant temperature, intake air temperature and atmospheric pressure etc, and convert the information into an electrical signal, which is sent to the ECM. Based on these signals, the ECM determines the injection volume (timing) and calculates the optimum ignition timing for the current conditions. The ECM not only controls the fuel injection timing, but also the self diagnostic function which records the occurrence of a malfunction, ignition timing control, idle speed control and EGR control. induction (发动机)进气 actuator 执行器 density 浓度 oxygen [化]氧 atmospheric 大气的 determine 决定 injection 喷射 optimum 最适宜的 ignition 点火 current 当前的 diagnostic 诊断 occurrence 发生 malfunction 故障 Fig.1-2-1 A EFI System（燃油系统） 1-ignition switch 2-EFImain replay 3-vehicle speed sensor 4-terminal TE1 5.PNP switch 6-A/C compressor 7-starter 8-headlight switch 9-defogger switch 10-MAP sensor 11-intake air temp. sensor 12-IAC valve 13-throttle position sensor 14- engine coolant temperature sensor 15-knock sensor 16-EGR valve 17-VSV for E