汽车专业英语 教学课件 作者 宋进桂汽车专业英语课件-section 1Chapter 4.ppt

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1、Chapter4SteeringandSuspensionSystems4.1SteeringSystem4.1.1BasicPartsofSteeringSystem4.1.2TypesofSteeringSystem4.1.3PowerSteeringSystems4.2SuspensionSystems4.2.1BasicPartsofSuspensionSystem4.2.2Frontsuspension4.2.3RearSuspensionChapter4SteeringandSuspensionSystems4.1SteeringSystemNewWord

2、sspindle['spindl]n.主轴，心轴，转向节linkage['liŋkidʒ]n.连接，连接装置，联动装置，传动装置plunger['plʌndʒə]n.活塞，柱塞，活动铁芯rotary['rəutəri]a.旋转的，转动的speedometer[spi'dɔmitə]n.(指汽车的)车速表，里程计relevant['relivənt]a.有关的，切题的，恰当的Chapter4SteeringandSuspensionSystems4.1SteeringSystemThesteeringsystemisdesignedtoallowthedrivertom

3、ovethefrontwheelstotherightorleftwithaminimumofeffortandwithoutexcessivemovementofthesteeringwheel.Althoughthedrivercanmovethewheelseasily,roadshocksarenottransmittedtothedriver.4.1.1BasicPartsofSteeringSystemThebasicsteeringsystem(Figure4-1)canbedividedintothreemainassemblies:·Thespind

4、leandsteeringarmassemblies.·Thelinkageassemblyconnectingthesteeringarmsandsteeringgear.·Thesteeringwheel,steeringshaft,andsteeringgearassembly.Chapter4SteeringandSuspensionSystems4.1SteeringSystemFigure4-1BasicpartsofsteeringsystemChapter4SteeringandSuspensionSystems4.1SteeringSystem4.1

5、.2TypesofSteeringSystemTherearetwotypesofsteeringsystems:manualsteeringandpowersteeringsystems.Inthemanualsteeringsystems,driverdoesalltheworkofturningthesteeringwheel,steeringgear,andtires.Inthepowersteeringsystems,hydraulicorelectricpower-assistedsteeringisusedtoreducetheeffortrequire

6、dbyturningthesteeringwheel.Therearethreetypesofthesteeringgearsinuse:recirculatingballsteeringgear,worm-and-rollersteeringgearandrack-and-pinionsteeringgear.4.1.3PowerSteeringSystemsHydrauliclack-and-pinionpowersteeringsystem.Thissystemconsistsofmechanicalrack-and-pinionsteeringgear,hyd

7、raulicworkingcylinderswithworkingplungers,rotaryslidevalve,oilpump,pressure-limitingvalveandoilreservoir(Figure4-2).Chapter4SteeringandSuspensionSystems4.1SteeringSystemFigure4-2Ahydraulicrack-and-pinionpowersteeringsystemwithrotaryslidevalveChapter4SteeringandSuspensionSystems