AUTOMOTIVEBASICS车辆工程专业英语.doc.doc

中国汽车技术论坛: 车资料请访问中国汽车技术论坛: 车资料请访问中国汽车技术论坛: PTER 1 AUTOMOTIVE BASICS ponents Today's average car contains more than 15,000 separate, individual parts that must work together. These parts can grouped into four major categories: engine, body, chassis and electrical equipment. 中国汽车技术论坛: 车资料请访问中国汽车技术论坛: . 2 Engine The engine acts as the power unit. The bustion engine is mon: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine :gasoline(also called a spark-ignition engine) and diesel(also called pression-ignition engine).Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission. 1. 3 Body An automobile body isa sheet metal shell with windows, doors, a hood, and a trunk deck built into it. It provides a protective covering for the engine, passengers, and cargo. The body is designed to keep passengers safe fortable. The body styling provides an attractive, colorful, modern appearance for the vehicle. 1. 4 Chassis The chassis isan assembly of those systems that are the major operating part ofa vehicle. The chassis includes the transmission, suspension, steering, and brake systems. Transmission systems ― conveys the drive to the wheels. The ponents are clutch, gearbox, driveshaft, final drive, and differential. Suspension ― absorbs the road shocks. Steering ― controls the direction of the movement. Brake ― slows down the vehicle. 1. 5 Electrical Equipment The electrical system supplies electricity for the ignition, horn, lights, heater, and starter. The electricity level is maintained by a charging circuit. This circuit consists of the battery, alternator (or generator). The battery stores electricity. The alternator changes the engine's mechanical energy into electrical energy and recharges the battery. New Words ponent 主要部件 category 种类,类型 body 车身 chassis 底盘 layout 布置 power unit