汽车检测与诊断技术（automobile inspection and diagnosis technology）

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1、汽车检测与诊断技术（AutomobileInspectionanddiagnosistechnology）In1.,aparametriccharacterizationofautomobiletechnologyconditionisdividedintotwocategories,oneis(structureparameters),theotheris(technicalconditionparameters)2.inordertoensurethereliabilityandaccuracyofthediagnosisresults,inthe

2、choiceofdiagnosticparametersshouldfollowthefollowingprinciples:1)2)3)sensitivitystabilityinformation4)3.makeeconomicfactorsshouldbeconsideredthebestdiagnosticparametercycle:1)2)automotivetechnicalconditionofvehicleusecondition3)cost4.enginetechnologysituationchangesinthemainsymp

3、tomsare:appearance(powerdown)(fuelandlubricatingoilconsumptionincrease)(startingdifficulty(four)leakageandoperationthere)5.abnormalnoisedetectionignitiontimingfora(manualmethod)(timinglight(method)andcylinderpressuremethodetc.)6.commonfaultsofautomobilesteeringsystem,steeringwhe

4、el,steeringfreerotationofthelargeamountofprecipitationWeight,automaticdeviation,frontwheelshimmy.Detectionof7.wheelalignment(withstaticdetectionanddynamicdetectionmethodoftwotypes)8.wheelbalancecanbedividedinto(staticbalanceanddynamicbalanceofthewheelwheel)9.safetyandenvironment

5、alprotectioninspectionlinefivestationisgenerally(datainputandcheckthecarsafetydevice(station)brakingsideslipspeedometer(lightgasstation)station)(vehicleinspectionstation)(comprehensivedecisionandmaincontrolroomstation)10.chassisdynamometer(byrollerdevice)(powerabsorptiondevice(m

6、easurement)(device)auxiliarydeviceoffrontwheelsideslip)11.(mainlybythesteeringwheelcamberandsteeringwheeltoe)detectionparametersoffrontwheelalignment12.vehicleshaveinfluence(staticdetectionmethod)and(dynamicdetectionmethod)two13.points(brakingperformancetestbenchtestandroadtest(

7、method)method14.)speedometerindicationerror=(speedometerindication-testindicator)/(testindicator)suspensiondeviceiscomposedof100%15.(elasticelement)(Guide)(shockabsorber).16.detectionmethodsofvehiclesuspensiondeviceperformanceis(empirical)(pressbodyandmethod)(testmethod)17automo

8、bileexhaustisthemain(carbonmonoxide,hydrocarbon