oil carry over 随气排油量

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1、CommercialVehicleSystemsAirCompressorOilCarryOver空压机随气排油量June2007Thisdocumenthasbeendesignedtoassistoperatorsofcommercialvehiclesandbuseswhohaveconcernsaboutthelevelofoilcarryoveronavehicleintheirfleet.Thedocumentincludes:−Anexplanationofoilcarryover,it

2、spossiblecausesandeffects.−Descriptionsofaseriesofinvestigationswhichcanbecarriedouttodeterminethecauseofanyoilcarryover,incorporatingatesttoassessitslevel.Inordertoestablishefficientlyiftheoilcarryoverisregardedasexcessiveand,ifso,whatthecauseis,itisess

3、entialthattheinvestigationsarecarriedoutintheordershownonthefaultfindingCharts.此文件旨在协助一直关注商务车和公交车排油量的运营商。此文件包括：解释排油量出现的原因及影响。描述确定排油量的原因及评估调查。如果排油量过高，什么原因引起？为了更加有效，通过实施次序失效模式图，显示调查结果则至关重要。Theinformationinthedocumenthasbeenpreparedtosuitallcompressorsizesa

4、ndvehicleapplicationsandsosomegeneralisationisinherenttokeepthedocumentassimpleaspossible.此文件的信息适用于所有尺寸空压机和装配车辆。因此，概括性文件应保持其原有的简易性。Whatisoilcarryover?什么是随气排油量？Allaircompressors,reciprocatingorrotary,usingmetalliccomponentsincontactwitheachother,requireth

5、epresenceofoiltolubricatethecontactareasotherwiseexcessivewear,orevenseizure,wouldtakeplace.Inevitablysomeofthisoilwillgetcarriedinthecompressedairdeliveredbythecompressorandthisiscalled‘oilcarryover’.采用金属零部件相互连接的往复式和旋转式空压机及所有类型的空压机都需要润滑连接区域；否则将会过度磨损，甚至抱

6、缸。一些油必然会随着空压机压缩的空气排出，这则称为随气排油量。Acompressoringoodworkingorderwillproduceonlyasmallamountofoilcarryover(obviouslydependantonthesizeandoutputofthecompressor)sothat,normally,thecompressorandthesystembeingsuppliedwillbeabletocopewithit.However,problemsstartto

7、arisewhenthecompressorbecomeswornorotherexternalfactorsexistandtheamountofoilcarryoverincreases.良好状态的空压机将产生少量的排油（主要参照空压机的尺寸和输出）。因此，通常空压机和系统相互匹配。但是，当随着空压机磨损或其他因素，将会造成排油量增加。Theoilinthecompressedaircanexistinvariousstates:在多种情形中，压缩空气中存油：Inareciprocatingcomp

8、ressoronatruckorbus,oilmaybesuckedpastthepistonringsintotheairwhereitwillquicklybeturnedintoits‘vapour’statebytheincreaseintemperatureduringthecompressionphase.Ifthetemperatureofthecompressedairbecomesexcessive(typicallyab