汽车结构中英文详解.pptxVIP

Automobile basic construction汽车构造基础 Automobile components汽车主要包括哪几部分呢？What’s the main partsof an automobile? Automobile componentsBodyElectrical systemEngine +Gear box Braking Power trainSuspensionSteeringChassisAutomobile components Today’s average car contains more than 15,000 separate,individual parts that must work together. These parts can begrouped into four major categories: body, engine, chassis andelectrical equipment 。现在的车辆一般都由15000多个分散、独立且相互配合的零部件组成。这些零部件主要分为四类：车身、发动机、底盘和电气设备。1.EngineThe engine acts as the power unit. The internal combustion engine is most common: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline and diesel发动机作为动力设备，常见的类型是内燃机，其原理是通过发动机缸内的液体燃料燃烧而产生能量。发动机可分为两类：汽油机和柴油机1.Engine1.1The basic performance principle of four-stroke gasoline engine 四冲程汽油机基本工作原理1.Intake stroke吸气行程2.Compression stroke压缩行程3.Working stroke做功行程4.Exhaust stroke排气行程1.Engine1.2Engine Overall Mechanics发动机总体构造The engine has hundreds of other parts . It includes two mechanism,six systems，they are1.crank mechanism2.valve ake system4.ignition system5.cooling system6.lubrication system 7.exhaust system Each of these systems has a definite function. These systems will discussed in detail next.发动机有上百个零部件，发动机是由两个机构和五大系统组成的，他们分别是曲柄连杆机构，配气机构，进气系统，点火系统，冷却系统，润滑系统，和排气系统。每个系统都有一定的功能。这些系统将在下面详细讨论。1.Engine1.2.1 crank mechanism 曲柄连杆机构 Crank mechanism is the main moving parts of the engine ,it helps engine complete operating cycle and energy conversion.曲柄连杆机构是发动机实现工作循环，完成能量转换的主要运动部分。1.EngineCrank mechanism includes Body group机体组: cylinder block, cylinder head, gasket,crankcase, cylinder liners and oil pan气缸体，气缸盖、气缸垫、曲轴箱、汽缸套及油底壳1.EnginePiston rod Group: pistons, piston rings, piston pins, connecting rods活塞连杆组：活塞、活塞环、活塞销、连杆1.EngineCrankshaft Flywheel Group: crankshaft, flywheel, torsional damper, balancer曲轴飞轮组：曲轴、飞轮、扭转减振器、平衡轴1.Engine1.2.2valve train配气机构The function of valve train is make sure the intake and exhaust valves can