1、罐式汽车dump truck自卸汽车semi-trailer towing vehicle半挂牵引汽车full-trailer toeing vehicle全挂牵引汽车二、Vehicle construction 汽车构造2.1 Main components of vehicle 汽车主要组成engine 发动机front axle前 桥wheel车 轮clutch离合器gearbox变速器propeller shaft传动轴universal joint万向节final drive and differential主减速器和差速器9rear axle后 桥10body车 身2.2 Vehi
2、cle performance 汽车性能maximum speed of the automobile汽车最高车速time of acceleration of the 汽车加速时间maximum gradability of the automobile汽车最大爬坡度constant-speed fuel econ-omy of the automobile汽车等速油耗economical speed of the 汽车经济2.3 engine position 发动机布置front engine , rear wheeldrive前置发动机,后轮驱动rear engine , rear w
3、heel后置发动机,后轮驱动front engine , front wheel前置发动机,前轮驱动under cab-floor engine驾驶室下置发动机underfloor engine车厢地板下置发动机三、Vehicle dimensions汽车尺寸vehicle overall length车长vehicle overall width车宽vehicle overall height车高front overhang前悬real overhang后悬wheelbase轴距tread轮距ground clearance 最小离地间隙angle of incidence接近角descen
4、t angle离去角四、Wheel alignment前轮定位caster 主销后倾steering axis inclination主销内倾camber 前轮外倾toe-in前轮前束五、Diameter of turning circle 转弯直径steering angle 转向角outside diameter of minimum turning circle最小转弯外径diameter最小转弯直径Inside diameter of 最小转弯内径Turning clearance circle转弯通道圆第二类 ENGINE 发动机一、Engine construction 发动机构造
5、rocker arm cover摇臂罩valve rocker arm气门摇臂camshaft凸轮轴camshaft drive凸轮轴驱动轮spark plug lead火花塞导线timing belt cover正时皮带罩valve spring气门弹簧poppet valve菌形气门piston活塞connecting rod连杆11timing belt正时皮带12combustion chamber燃烧室13cylinder block汽缸体14water jacket 水套15oil filter机油滤清器16flywheel飞轮17ring gear齿圈18oil gage机油标尺
6、19oil pan/sump油底壳20crankshaft曲轴21drain plug放油孔塞22v-belt pulleyV型皮带轮二、Essential term 基本术语cylinder diameter汽缸直径piston stroke活塞行程crank radius曲轴半径piston displacement活塞排量compression chamber volume压缩室容积total cylinder volume总汽缸容积top dead center上止点bottom dead center下止点三、Engine operation principle 发动机工作原理3.1
7、 Four-stroke gasoline engine operation principle四冲程汽油机工作原理intake stroke进气行程compression stroke压缩行程expansion stroke膨胀行程exhaust stroke 排气行程combustible mixture可燃混合气intake valve进气门spark plug火花塞exhaust valve排气门exhaust gas废气3.2 Four-stroke diesel engine operational principle四冲程柴油机工作原理intake进气compression压缩c
8、ombustion燃烧expansion膨胀exhaust排气air空气injector喷油器3.3 Two-stroke gasoline engine operation principle二冲程汽油机工作原理inlet port进气口crankcase曲轴箱precompressed mixture预压混合气transfer canal输气道intake portexhaust port排气口3.4 Two-stroke diesel engine operation principle二冲程柴油机工作原理blower pump扫气泵precompressed air预压空气air ch
9、amber空气室inlet port 四、Engine performance 发动机性能fixed throttle characteristics速度特性part throttle characteristics 负荷特性engine speed转速torque扭矩horsepower功率specific fuel consumption燃油消耗率五、Crank connecting rod mechanism曲柄连杆机构5.1 Cylinder block 机体组cylinder liner汽缸套cylinder bearing surface汽缸套表面cylinder head汽缸盖i
10、nlet manifold mountingflange进气歧管凸缘oil inlet hole加油孔cylinder head cover汽缸盖罩cylinder head gasket汽缸盖衬垫oil filter mounting flangeventilating pipe mounting seat通风管座cylinder block stiffeningrib加强肋rear main bearing cover后主轴承罩main bearing cap主轴承盖oil sumppan gasket油底壳衬垫oil sump/panfuel pump mounting燃油泵凸缘igni
11、tion distributor mounting flange分电器凸缘camshaft bearing bushseat轴承座camshaft drive(gear)cover驱动齿轮罩gasket衬垫5.2 Piston,connecting rod 活塞连杆组connecting rod shank连杆杆身connecting rod small end连杆小头connecting rod bushing连杆衬套spring clip弹簧卡环piston pin活塞销piston head活塞头部piston ring groove活塞环槽compression ring压缩环oil
12、scraper ring 油环piston skirt活塞裙部piston pin boss活塞销座connecting rod bearing halfshell连杆轴瓦connecting rod cap连杆螺栓连杆大头盖Connecting rod end连杆大头5.3 Crankshaft,flywheel 曲轴飞轮组crankshaft front end曲轴前端front main journal前主轴颈oil passage hole机油孔crank pin 曲柄销crank web曲柄臂counterweight 平衡重crankshaft collar 曲轴后端凸缘flywh
13、eel flywheel gear ring 飞轮齿圈flywheel lock plate飞轮锁片clutch shaft bearing离合器轴轴承main bearing halfshell(upper,lower)主轴承(上、下)轴瓦crankshaft thrust halfring曲轴止推片bearing tang轴瓦定位凸键六、Valve mechanism 配气机构6.1 Side valve 侧置气门cam凸轮tappet气门挺杆side valve侧置气门crankshaft timing gear曲轴正时齿轮camshaft gear-wheel凸轮轴齿轮gear dri
14、ve齿轮传动6.2 Overhead valve 顶置气门camshaft camfollower凸轮顶杆push rod推杆adjuster调整螺钉cocker shaft摇臂轴rocker shaft摇臂valve 气门valve气道6.3 Overhead valve 顶置气门camshaft front bearing凸轮轴前轴承valve head气门头valve stem气门杆挺筒lower valve spring collar气门弹簧下环outer valve spring外气门弹簧valve guide气门导管inner valve spring内气门弹簧shielding
15、cap护帽oil flinger油封upper valve spring collar气门弹簧上环valve split cone 气门锁片closer螺塞rocker armrocker bracket摇臂支座retaining washer定位摇臂thrust washer止推摇臂rocker adjusting screw摇臂调整螺钉camshaft rear bush凸轮轴后轴承23camshaft center bush凸轮轴中间轴承承承承2425oil pump driving gear机油泵驱动齿轮6.4 Valve-timing diagram 配气相位图TDC(top dea
16、d center)BDC(bottom dead center)intake opens进气门开intake close进气门关exhaust opens排气门开exhaust closes排气门关direction of rotation旋转方向七、 Gasoline engine-fuel system 汽油机供油泵7.1 Fuel system 供油泵fuel level gauge 油面指示表air cleaner空气滤清器carburetor化油器inlet manifoldexhaust manifold排气歧管fuel pump汽油泵fuel filter汽油滤清器exhaust
17、 silencer排气消声器fuel pipe油管fuel tank汽油箱7.2 Air cleaner 空气滤清器intake tube进气管deflector knob 导流旋扭air deflector空气导流器cleaner body滤清器壳butterfly nut蝶形螺帽filter cover滤清器盖filter seal ring滤清器密封环cleaner cartridge滤清器滤芯silencer element消声元件crankcase bleed pipe曲轴箱通风管hot air pipe热空气管7. 3 Fuel pump,fuel filter 汽油泵,汽油滤清器
18、fuel pump base汽油泵座diaphragm膜片fuel inlet neck汽油进口fuel pump body汽油泵壳filter screen滤清器网bowl cover泵盖fuel feed port汽油出口distance washer调整间隔垫圈diaphragm spring膜片弹簧fulcrum pin杠杆支点销filter bodyfilter cartridge glass bowl玻璃滤杯bowl retaining clip滤杯支承夹7.4 Simple carburetor 简单化油器valve needle针阀float浮子nozzle喷管chock tu
19、be喉管throttle valve节气门intake manifoldmetering jet量孔float chamber浮子室7.5 Carburetor 化油器down-draft carburetor下喷式化油器choke tubetwo-barrel carburetor双管化油器plug旋塞filter gauze滤清器金属丝网fFuel inlet port进气门口valve seat阀座float needle valve浮子针阀float pivot pin 浮子销float accelerator pump加速泵7.6 Carburetor elements化油器零件throttle lever节气门杆pull lever拉杆release lever放松杆throttle valve spindle节气门轴main metering jet主量孔idl
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