GBT 12678-1990 标准（英文版）

《GBT 12678-1990 标准（英文版）》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、.NationalStandardofthePeople’sRepublicofChinaReliabilityRunningTestMethodForAutomobilesGB/T12678-19901　SubjectcontentsandscopeofapplicabilityThisstandardspecifiesthereliabilityrunningtestmethodforautomobiles.Thisstandardisapplicabletothereliabilityrunningtestforc

2、ompletevehicleduringtypeapprovalandqualityevaluationofvariousautomobiles.2　ReferencetostandardsGB7031Vehiclevibration:DescribingmethodforroadsurfaceirregularityGB/T12534Motorvehicles-Generalrulesofroadtestmethod3　Terms3.1　RoutinereliabilitytestReliabilitytestperf

3、ormedaccordingtoastandardundertheconditionsofhighwayandnormalroad.3.2　QuickreliabilitytestReliabilitytestperformontheroadsofthetestingfieldwithcertainquickcoefficient.3.3　MaintenanceafterfailureRepairperformedaftertheautomobilehasfailure.3.4　Preventivemaintenance

4、Repairandmaintenanceperformedaccordingtothecycleanditemsspecifiedbytheautomobilemanual.3.5　PotentialfailureFailurethathasoccurred,butnotyetdiscovered,ordiscoveredintheprocessofpreventivemaintenanceandoverhaulinspection.3.6　Equivalentfailurenumber19Thenumberofgene

5、ralfailuresconvertedfromfailuresatvariouslevelswithcertaincoefficientaccordingtotheirhazardness.4　Testingconditions4.1　Loadingquality　　TheloadingqualityisspecifiedaccordingtoArticle1ofChapter3inGB/T12534.4.2　Testingroads4.2.1　RoutinereliabilitytestingroadRoutiner

6、eliabilitytestingroadsurfacelevelsareaccordingtothespecificationsinTable1ofGB7031.4.2.1.1　PlainroadRoadonplainsandrollingterrainswiththeroadsurfacesmoothnessofLevelCorabove,maximumgradientlessthan5%,wheretheroadsurfaceiswideandstraight,withgoodrangeofvision,andth

7、eautomobilecankeepdrivingatahighspeedforadrivingdistanceofmorethan50km.4.2.1.2　BadroadRoadwithfirmroadbedandunevenroadsurface.Obviouswashboardwave,andequallydistributedfishscalepitetc.RoadsurfaceunevennessisLevelEorbelow,whenthetestvehicleisdrivingonsuchroad,itsh

8、ouldbesubjecttostrongvibrationanddistortionload,butthereshouldbenoheavyimpact.4.2.1.3　MountainroadAveragegradientisover4%,maximumgradientis15%,continuousslopel