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1、附錄ⅡBuschassisSummaryBuschassisisthemostimportantpart,ithasadirectbearingontheperformanceofbus.China'sbusindustrystartedlate,sofaronly20orso,onourbuschassisdevelopment,canbesummarizedas:latestart,poorfoundation,rapiddevelopment,andgraduallynarrowthegapbetweenforeigna
2、ndotherfeatures.Beforethe1980s,China'smainpassengervehiclechassismodifications.Sinceslowervehiclespeed,vehiclerideisnottoohigh,thusconvertedintoalow-speedbus(maximum75kilometers),comfortpoor.In1981theoriginalfactoryinYangzhouBus(nowYangzhouYaxingBusCo.,Ltd.)thesucce
3、ssfuldevelopmentofthefirstbuschassisJT663,anditstruckchassiscomparedtothepast,Speed(90km/h),usingawidefrontaxleforLunjubus,cycle-ballsteeringgearanddual-circuitbrakesystempressure,whenthesystemisalsoabreakthroughhasbeenabletofinda"people-oriented"Designconcept.JT663
4、Preparationofsuccess,markingthebirthofChina'sbuschassis,isofepoch-makingsignificance.Inthe1990s,thedevelopmentofChina'shighwayspeedofvehiclesbythenewrequirements,therequirementsofthelargestvehiclesmorethan120kilometersperhour,normaldrivingspeedof90kmabove.Althoughat
5、thistimemanyofthedomesticpassengerbusinessthroughjointventures,cooperationortechnologytransferandothermeanstostartproducinghigh-speedbus,butduetohighcostofthesevehiclesonlyonthestrengthofpassengertraffic,operatingineconomicallydevelopedareas,theeconomyinunderdevelop
6、edregionsThenumberofroadmixedlines,thelackofsuitablevehicles.AtthispointbusesandchassisbusinessJT663chassisdesignfromthesuccessfulexperiencesof,Toreducethebodytorelievethemselves,reducethemaximumgrossvehiclequality,increasedenginepower,improvepowervehiclesthanmeasur
7、essuchasusingintegratedpowersteeringandnoise,coolingfast,longservicelifeoftheradialtire,designedtoproduceRegularrateisgreaterthan90kmandamaximumspeedreached10kmabovetheJS6820andbuschassis.Becausethemainassemblyofthecarweredomesticcases,thepriceofonly30million,higher
8、costperformance,thegeneralpassengerbusinessinaboutsixmonthstorecoverthecost,sowelcomedbydomesticusers."9thFive-Year"period,theindustrialde
