一、功用 带走高温零件多余的热量,保持发动机在最适宜的温度范围工作。 二、车用发动机冷却类型 1、水冷 2、风冷

一、填空: 1.车用内燃机根据其燃料不同分为()和()。 2.四冲程发动机每完成一个工作循环,曲轴旋转()周,进、排气门各开启()次,活塞在两止点间移动()次

It should provide drivers with good operating condition and comfort working environment; It should isolate vibration, noise, waste gas and harsh climate and provide passengers with comfort riding environment; It should keep the completeness of cargo and make them easy to load and unload; The structure of body and its equipment should ensure the safety of driving and reduce the influence of an incident. The reasonable outer shape of body can effectively steer the surrounding current and should improve the dynamic characteristics, fuel economy and driving stability. It should also improve the cooling condition of engine and ventilation inside the cab

1.主减速器的功用及单级主减速器的结构 2.设置差速器的必要性及对称式锥齿轮差速器的工作原理. 3.半轴的支承型式及桥壳的种类

1.边式车架的结构. 2.转向轮定位参数及工作原理. 3.子午线轮胎的结构及优点. 4.钢板弹簧的结构. 5.麦弗逊式独立悬架的结构

一、作用 按照发动机的工作顺序定时、定量实现换气过程。达到进气尽可能充分、排气尽可能干净的目的。衡量进气充分程度的指标充量系数pc定义:实际进气量与进气状态下理论上充满气缸工作容积的新鲜充量之比

1、汽油机供给系的组成及燃料 2、简单化油器与可燃混合气的形成 3、可燃混合气成分与汽油机性能的关系 4、电控汽油喷射系统

Function of frame、Requirements of its structure、 Classification； Structural characteristics of fringe-beam frame(边 梁式）； Structural characteristics of backbone type frame （中梁式） ； Structural characteristics of comprehensive type frame； Structural characteristics of Monocoque Body

1.万向节的种类 2.单十字轴万向节的不等速性及双十字轴万向节的等速条件 3.等角速万向节的工作原理及球笼式万向节的结构

Composition, functions and structure types of the drive axle ； Final drive ：single reduction final drive、double reduction final drive、hub reduction gear、 two￾speed final gear 、thru-drive(贯通式主减). Differential ：gear differential、 antiskid differential and so on. Axle shaft and axle case：Support and structure of axle shaft、Classification of axle case、 design feature