马勒产品滤清器培训

FilterProductKnowledge滤清器产品知识Airfilters,Oilfilters,Fuelfilters,Cabinairfilters空气滤清器，机油滤清器，燃油滤清器，空调滤清器08.10.2007,Seite2FilterTasksinaCombustionEngine燃油、机油和空气滤清器RegardingFuel,OilandAir在内燃机中的作用Causesforenginewear„Sandanddirtparticlesreachtheenginethroughfuelandintakeair.„Metalparticles,etc.fromabrasionofthemovingenginecomponents,reachtheengineoil.„Aswellasresidues(e.g.soot)fromincompletecombustion(blow-bygases).„Fibers,plasticandrubberparticlesmayblocktheoilcirculation.Taskofenginefilters„Separationofwear-enhancingparticles.„Separationofcontaminantswhichmightblockthecirculation.„Waterseparationtopreventcorrosion,icinganddamagetooperatingagentsanddevices.„Wearprotectionofbearingandworkingsurfacesofallmovingcomponentsintheengine.导致发动机磨损的原因滤清器的作用沙尘颗粒通过燃油和进气进入到发动机分离磨损颗粒发动机零件运动中磨损的金属颗粒进入发动机机油分离杂质以防其堵塞循环来自不完全燃烧所产生残渣（如油烟）分离水以防腐蚀，冰冻和对运作介质及装置破坏纤维，塑料和橡胶颗粒会堵塞机油循环系统对发动机活动零部件的运作表面的防磨保护08.10.2007,Seite3FilterCharacteristics(DIN71450)SeparationGradein%:DustHoldCapacitying:FilterLifeTimeinhFlowResistance/PressureLossinmbar:FilterGrainSizeinµmoder%TotalSeparationGrade(byweight)referstoallseparatedparticles.TheParticleorFractionalSeparationGradereferstoaspecificrangeofparticlesizesinµm.TheThroughPassGradeisthedifferenceto100%,i.e.thedustloadafterfilter.Mass(amount)oftestdust,whichiscollectedbythefilteruntilitreachesadefinedendcondition(e.g.eflowresistancelimit).Durationoffilterinuseuntildustholdcapacityisreachedandfilteristobechanged.Flowresistanceistheresistancewhichthefiltercausestothefiltrationmedia.Thereisaprogressiveincreaseintheflowresistancewiththecontamination.Forfilterpaper:e.g.MFPinµm(MeanFlowPoreSize),testwithliquid.Forfilterfleece:e.g.separationin%for1µmParticles,testwithair.08.10.2007,Seite4滤清器的技术特性（DIN71450）„过滤效率（%）：总隔离等级（以重量算）参照于所有隔离颗粒。摩擦隔离等级的颗粒参照于颗粒规格的特别范围（µm）。通过等级以100%计算差额，即过滤后的灰尘负载。„容尘量（克）：大量测试从滤清器中获得的灰尘，直到它达到饱和状态。（例如，流量极限）„滤清器寿命（小时）：持续使用滤清器直到灰尘容量达到饱和以及滤清器被更换。„阻力/压力降（mbar）：流量通过率是指滤清器产生在滤清媒介上的结果。由于污染原因灰尘通过有逐渐增长的趋势。„滤清器孔径规格(µm)或%：对于滤纸：例如MFP（µm）（平均孔径），采用液体测试对于无纺布：例如1µm颗粒的过滤效率%，采用空气测试08.10.2007,Seite5FlowResistanceofaFilterElement滤清器的流通阻力Thefilterelementshouldbechangedlatestafterreachingthepriordefinedpressuredifference∆pworafterreachingthechangeintervaltw.滤清器应当在达到预定的压差∆pw时或在达到更换周期时应该尽早更换ChangeInterval更换周期Timeorcontaminationload时间或者集尘量∆pw∆poPressuredifferenceinbar压差(bar)tw08.10.2007,Seite6FilterPaperforFuel-andOilFilter(WNF102008)燃滤和机滤的滤纸Ingeneral-duetocostsaving-thefilterpaperisfromcellulosefibreswhichisresinsoaked,filtergrainsize(MFP)from7to45µm,thicknessfrom0,36to0,9mm,pleatingtoincreasethefiltersurfaceandthestability.总的来说－为了降低成本－滤纸是由浸过树脂的纤维做成的，滤清器的平均孔径在7到45微米之间，厚度在0,36到0,9毫米之间，然后采用折纸方式来提高过滤面积和稳定性。Thedustside(upstream)haslargerporesthanthecleanside(downstream),duetothepapermanufacturingprocess(wiresideofthepapermachine).Thisfunneleffectofthefilterpaperhasadvantagestotheparticleseparation.脏面（上流面）的孔径大于清洁面（下流面)的孔径，通过滤纸生产的过程（滤纸的有线面），这样形成的滤纸的漏斗效应有利于颗粒的分离。Thedustsideofthefilterpaperismarkedwithaline滤纸的灰尘面印有线做记号。DirtySide脏面CleanSide干净面08.10.2007,Seite7PaperandPleating滤纸和折纸PaperStructure滤纸的结构PaperandPleating滤纸和折纸08.10.2007,Seite9PaperandPleating滤纸和折纸ProcessingFilterPapertoPleatedPaper将滤纸处理成褶纸Benefitsofprofile这种外形的优点„Tostiffenthefilterpaperinprofiledirection在纹路方向可以使滤纸坚硬„Tokeepthepleatspacing保证褶皱空间08.10.2007,Seite10PaperandPleating滤纸和折纸PleatingMachine折纸机08.10.2007,Seite11„Subjecttotheshape,thereareplateandringelements.外形上有平板和环形滤芯。„Theopenpleatendsaregluedorclosedwithanenddisktoseparateintakeandcleanside.开放式的褶皱底部用胶水固定住或者用一个底座来封闭用以分割入口和清洁面。„Subjecttothematerialoftheenddisk,anadditionalsealingmayberequired.由于底座的材料，可能会需要额外的密封PaperandPleating滤纸和折纸ProcessingofPleatedPapertoFilterElement滤芯纸褶的处理Plateelement平板滤芯Ringelements环形滤芯08.10.2007,Seite12CharacteristicofFilterPaper滤纸的特性BasicWeight(g)克重（克）Thickness(um)厚度(微米)PoreSize(um)孔径(微米)Resistance(kPa)空气阻力(kPa)Stiffness挺度TensileStrenght抗拉强度AirFilters空气滤清器08.10.2007,Seite14AirFilters空气滤清器MAHLEAbbreviations马勒缩写„Airfilterinsert空滤芯或主滤芯LX„Safetyinsertforairfilters安全滤芯LXS08.10.2007,Seite15Ringelement环型滤芯Flatelement板式滤芯Roundelement圆型滤芯Ring/flatelementforJapaneseengines用于日本发动机环形/板式滤芯AirFilters空气滤清器LXFilterElementforDryAirFilterDesigns用于干式空气滤清器的LX滤芯设计08.10.2007,Seite16AirFilters空气滤清器LXRingElementforPassengerCars轿车用LX环型滤芯Engine-mountedairfilterforcarburetorengines(predecessorofinjectionengines).TheopenpleatendsareclosedbyaPURenddiskwithsealingrimtoseparateairintakeandcleanside.Aperforatedplate(supportingshell)isplacedbetweenupperandlowersealingrimtoreinforcethepleatedmaterialagainstdeformations(sealingforce).发动机所需的空气滤清器用于化油器发动机（电喷发动机的前一代）。褶皱末端由一个PUR底盖的密封圈来隔离进气端和清洁端。一个孔板（支撑骨架）被置于上下密封环的中间来加固折叠材料以防变形（密封力）。Theopenpleatendsofthelowerringelementareglued.Noadditionalsupportingshellisplacedbetweentopandbottomsealingrim.Thesealingforceistransferredbyanespeciallydeformation-resistantfilterpaper,eveninhumidcondition.下端环形滤芯的开口折纸端采用胶水密封。顶部和底部的密封圈没有附加的支撑骨架即使在潮湿的情况下，密封的力是靠具有防变性的滤纸来传递的08.10.2007,Seite17CleanairductSA82,blowmouldpartTEEEwithmotionandlinearcompensationtotheaircleanerRawairductLSA124/125fabrich