宁波柴油发电机组维修保养
宁波柴油发电机组维修保养发动机维修技术分析与总结
发动机的修理技术是通过维修人员凭着丰富的时间经验和理论知识，依靠发动机的规定和技术要求进行分解和修复，现对维修中所存在的技术问题进行分析、总结。现通过对发动机维修时常遇见的问题做简要的分析，以供有关人员在今后的工作中参考：1发动机的分解
为使分解能顺利进行，一般由外向内的分解程序进行分解，拆卸下来的螺栓和零部件要按要求存放好，防止丢失和变形，如曲轴、缸盖，凸轮轴等要按要求放置平衡，防止受力不均而产生变形，造成不必要的损失。对有要求按照规定程序进行分解的零部件，一定要按规定的分解程序进行分解。例如：气缸盖和曲轴主轴泵螺栓，如果没有严格按照规定的拆卸程序进行拆卸，一旦程序错乱，便会造成缸盖和曲轴的变形，甚至报废。2零部件选择
目前，由于市场上出售的零件良莠不齐，有些配件由于库存时间过长，其性能以无法达到原厂设计的标准和技术要求，特别是假冒伪劣配件，其性能达不到原厂设计的技术要求，严重影响机械安全和技术性能，所以在安装配件前，必须严格对新配件做出详细的技术检查。而有些维修人员在安装新配件时，没有对新配件做技术检查就直接安装在发动机上，这种做法是很不合理的。例如：一辆日本三菱FV413货车在正常行驶时水温高，经检查是发动机水泵进水口胶管在水循环时被吸扁，原来胶管是劣质产品，由于胶管长度较长，而胶管内并无防变形弹簧，由于发动机工作时，水温升高，使胶管变软，被水泵吸扁，冷却水无法正常循环，造成发动机水温过高，更换正厂的水进水管后，发动机工作时水温正常，因此在维修发动机时，应使用正厂的配件，不可用其它型号的配件代用，更不能错用。3零部件的清洗
在维修发动机时，正确的清洗方法是提高修理质量和延长其使用寿命的关键。有些维修人员在清洗过程中不注重零部件的清洗，没有合理的选择清洗剂和清洗方法，导致零部件腐蚀损坏和早期磨损。因此，在清洗发动机各个部位的零部件时，必须认真彻底地清除其表面的油污和杂质。而在选用清洗剂时，为了不使零部件表面受到破坏，影响配件的技术性能，对不同材质的零部件的选用的清洗剂也不同，特别是精密零部件和橡胶类零件都不允许有任何程度的腐蚀。例如：铝合金类，铜制品类和橡胶类零部件不宜放在碱性或酸性清洗剂中清洗，避免对其产生不同程度破坏和腐蚀，影响其技术性能。4零部件的安装
装配时，要由内向外的装配程序进行安装，并严格按照工作原理和规定要求进行安装。特别是对外部特征比较相似，容易发生装反的零部件。更应注意：例如发动机的汽缸垫、活塞、正推垫片、油封、活塞环等。这些零部件如果在安装时不了解其工作原理和结构，最易装反，导致装配后不能正常工作，发生机械事故。所以在装配零部件时，一定要了解零部件的结构和工作原理，掌握正确方向和安装要求。5零部件的配合间隙
发动机装配时，零部件的安装有严格的技术要求，各项配合间隙必须严格测量，对不符合要求的零部件要进行调整或更换，特别是活塞间隙、活塞与缸套的配合减息、气门间隙、主轴瓦与主轴颈配合间隙、连杆瓦羽联赣州颈间隙、活塞肖与肖套配合间隙、曲轴的轴向间隙等。各部位都有严格的尺寸和配合公差要求。在实际维修中，有些维修人员根本没有按技术要求进行检测后再进行装配，而是有目地将零配件直接安装导致间隙过大时轴承磨损加剧，而过大时将引起轴承抱死和烧熔等现象，使发动机根本无法正常工作，甚至会因零部件的配合间隙不当导致严重的机械事故的发生。6螺栓的选用
由于发动机工作时温度变化和变载荷作用比较大，因此，装配发动机时，正确选用专用的螺栓对保证发动机维修后能否正常工作至关重要。例如：气缸盖螺栓、连杆螺栓、曲轴主轴承螺栓、喷油器固定螺栓等，都是采用特殊材质的螺栓，其强度高，抗剪切力强。如果发现螺栓损坏或丢失时，一定要按要求选用同等规格和技术要求的螺栓。在选用时，一些重要螺栓的头部都标有记号，以便识别。如果随意选用其它螺栓代用或自行加工代替，这些螺栓因材质差或加工工艺不合格，导致在工作中发生拉卡，滑丝等损伤，严重时产生断裂，造成敲坏气缸体的严重事故，因此，在选用螺栓时，质量一定要符合规格和技术要求，切忌乱代乱用。7螺栓拧紧程序和力矩
发动机各部位螺栓拧紧时，一定要按照规定的拧紧程序和力矩进行拧紧，各部位螺栓在拧紧时都规定了严格的拧紧程序和力矩。而一些维修人员在拧紧螺栓时不按规定程序和力矩进行拧紧，不使用扭力扳手，随意使用加力杆，导致拧紧力矩不足或过大。而当力矩不足时，易产生螺栓松脱，力矩过大时螺栓易拉伸变形，断裂，例如：扭紧气缸盖螺栓时，如果不按规定程序和力矩拧紧，将导致发动机气缸体和气缸盖变形，并冲坏气缸垫片，因此在维修发动机时，一定要按规定程序和力矩扭紧螺栓，防止因螺栓拧紧力矩过大，过小或不按程序而导致故障的发生。8垫片的使用
发动机各部位的垫片种类很多，常用的有平垫、弹簧垫、石棉垫、纸板垫、铜垫、铝垫等。不同种类的垫片有着不同的作用。有些起着防松、防脱的作用，有些起作密封的作用。如果在使用垫片时不按规定和要求进行选择，导致机械事故的发生。例如：发动机气缸垫过薄时，容易产生漏油或漏气，甚至冲坏气缸垫，过厚时使气缸压缩比降低，严重影响发动机的正常工作和机械性能，因此在选用垫片时一定要按要求选用符合技术要求的垫片，防止事故的发生。9附件的检查
发动机的附件总类很多，有柴油滤清器、机油滤清器、空气滤清器、风扇罩、水温表、水箱盖、油压表、感应等。如果缺乏对附件检查和维护保养，将严重影响发动机的正常工作，减少发动机的使用寿命，因此对附件的检查和保养是必不可少的，对延长发动机的使用寿命至关重要。结束语：本文论述了在装配发动机时经常被忽视的问题和应对措施。在装配时必须了解其工作原理，按照规定的技术要求和程序进行装配，进一步提高了维修质量，减少了故障的发生，使修复的发动机能处于最佳的性能状态。
Ningbodieselgeneratorsetmaintenance
Enginemaintenancetechnicalanalysisandsummary
Enginerepairtechnicalmaintenancepersonnelwithawealthoftimeexperienceandtheoreticalknowledge,relyontheprovisionsoftheengineandtechnicalrequirementsdecompositionandrepairarenowonthemaintenanceofthetechnicalproblemstoanalyze,summarize.Nowdoabriefanalysisofenginemaintenanceisoftenmet,fortherelevantpersonnelinthefutureworkofreference:Anengineofdecomposition
Sothatdecompositionofasmooth,generallyfromoutsidetoinsidethedecompositionprocessdecomposed,removedboltsandpartsaccordingtotherequirementsofstoragetopreventlossanddistortion,suchascrankshaft,cylinderhead,camshaft,accordingtotherequirementsplacedonbalance,topreventunevenforcedeformation,resultinginunnecessarylosses.Decomposedpartsdecompositionisrequiredinaccordancewithprescribedprocedures,mustaccordingtotheprovisionsofthedecompositionprocess.Forexample:thecylinderheadandcrankshaftmainpumpbolts,ifnotinstrictaccordancewiththeprovisionsofthedemolitionprocesstobedemolished,oncetheprogramisconfusionwillresultindeformationofthecylinderheadandcrankshaft,orevenscrapped.Twopartsselection
Atpresent,thesaleofpartsonthemarketvariesgreatly,someaccessoriesinventoryfortoolong,itsperformancecannotmeettheoriginaldesignstandardsandtechnicalrequirements,inparticularcounterfeitparts,itsperformanceuptolessthantheoriginaldesignofthetechnicalrequirements,seriouslyaffectthemechanicalsafetyandtechnicalperformance,beforeinstallingtheaccessories,mustbestrictlymakeadetailedtechnicalexaminationofnewaccessories.Somemaintenancepersonnelintheinstallationofnewaccessories,thereisnotechnicalinspectionofnewaccessoriesdirectlymountedontheengine,thisapproachisveryunreasonable.Forexample:aJapaneseMitsubishiFV413goodsvehiclesinnormaldriving,highwatertemperature,checkenginewaterpumpinlethoseinthewatercyclebeingsuckedflat,theoriginalhoseinferiorproductsduetoalongerhoselength,hosedidnotanti-deformationofthespring,duetoenginework,thewatertemperature,softenedhose,waterpumpsuctionflat,thenormalcycleofcoolingwater,causingtheenginewatertemperatureistoohigh,thereplacementistheplant"swaterinletpipewatertemperature,engineworknormalmaintenanceoftheengine,youshoulduseGenuineaccessories,notsubstituteothertypesofaccessories,nottomisuse.3partscleaning
Inthemaintenanceoftheengine,thecorrectcleaningmethodistoimproverepairqualityandextenditslifethekey.Somemaintenancepersonnelinthecleaningprocessdoesnotpayattentiontothecleaningofparts,thereisnoreasonablechoiceofcleaningagentsandcleaningmethodscausepartstocorrosiondamageandearlywear.Therefore,thecleaningofvariouspartsoftheengineparts,mustbecarefullyandthoroughlytoremovethesurfaceoilandimpurities.Selectionofcleaningagents,inordernottomakethecomponentsurfaceisdestroyed,affectingthetechnicalperformanceoftheaccessories,theselectionofthedifferentmaterialcomponentsofthecleaningagent,especiallyprecisionpartsandrubberpartsarenotallowedtohaveanyThedegreeofcorrosion.Forexample:classaluminumalloy,copperproductsclass,andrubberpartsshouldnotbeonthealkalineoracidiccleaningagents,cleaning,andavoidtheirvaryingdegreesofdamageandcorrosiontoaffectitstechnicalperformance.Fourpartsoftheinstallation
Assembly,theassemblyprocessfromtheinsideoutinstallation,andrequirementsforinstallationinstrictaccordancewiththeprinciplesandprovisions.Inparticular,externalcharacteristics,pronetoholdanti-parts.Shouldpayattentionto:suchastheenginecylinderheadgasket,piston,pushinggaskets,oilseals,pistonringsandother.Ifthesepartsduringinstallationdonotunderstanditsworkingprincipleandstructureofthemostanti-transvestite,leadingtonotworkproperlyafterassembly,mechanicalaccidents.Partsintheassembly,besuretounderstandthestructureandworkingprincipleoftheparts,tomasterthecorrectdirectionandinstallationrequirements.5partswiththegap
Engineassembly,theinstallationofthepartsstringenttechnicalrequirements,allwiththegapmustbestrictlymeasurementdoesnotmeettherequirementsofpartstobeadjustedorreplaced,especiallythepistonclearance,pistonandcylinderwiththecutininterestrates,valveclearance,themainbearingandmainjournal,withthegap,connectingrodbearingBWFGanzhouneckgaptoliveSaixiaoandtheShawsetwiththegap,theaxialclearanceofthecrankshaft.Eachsitehasastrictsizeandfittolerancerequirements.Inactualmaintenance,somemaintenancepersonneldidnotaccordingtothetechnicalrequirementsfortestingafterassembly,butthepurposeofsparepartsinstalleddirectlyleadtobearingwearincreasedgapistoolarge,toolargewillcausethebearinglockingandShaorongsuchphenomena,sothattheenginesimplydoesnotwork,becauseeventhepartsoftheco-ordinationbetween
Thegapduetoimproperseriousmachineryaccidents.Choiceof6bolts
Becauseoftherelativelylargetemperaturechangesandvariableloadsintheenginework,assemblingtheengine,thecorrectselectionofspecialboltsrightcanworktoensuretheenginemaintenanceisessential.Forexample:thecylinderheadbolts,rodbolts,crankshaftmainbearingbolts,fuelinjectormountingboltsarespecialmaterialbolts,itshighstrength,shearandstrong.Iftheboltisdamagedormissing,accordingtocertainrequirementsofthebolttousethesamespecificationsandtechnicalrequirements.Intheselectionoftheboltheadismarkedmarkedtofacilitateidentification.Iftherandomselectionoftheotherboltsalternativeorself-processinginsteadofboltsduetopoormaterialorprocessfailure,leadingtoLahappenedatwork,slipthewiredamage,seriousfracture,resultinginseriousincidentsknockthebadcylinder,sowhenintheselectionofbolts,thequalitymustmeetthespecificationsandtechnicalrequirementstoavoidchaosgenerationofindiscriminateuse.7bolttighteningproceduresandtorque
Tightentheboltsoftheengineparts,inaccordancewiththeprescribedtighteningproceduresandtorquetightenallpartsbolttightenprovidethestricttighteningproceduresandtorque.Anumberofmaintenancepersonneltightentheboltsaccordingtoprescribedproceduresandtorquetighten,donotuseatorquewrenchisfreetousetheafterburnerrod,resultingininadequateorexcessivetighteningtorque.Whenthetorqueisinsufficient,easytoproducetheboltsloose,thetorqueistoolargeboltseasytotensiledeformation,fracture,suchas:tighteningcylinderheadbolts,ifnotaccordingtoprescribedproceduresandtorquetighten,willresultintheenginecylinderblockandcylindercoverdeformation,andwashedouttheheadgasket,sothemaintenanceoftheengine,certainlyaccordingtotheprovisionsoftheproceduresandtorquetighteningbolttopreventthebolttighteningtorqueistoolarge,toosmallornotaccordingtotheprocedurewhichledtothefailureoccurred.8padsofuse
Engineparts,gasketsaremanykindsofcommonflatwasher,springwasher,asbestosmats,cardboardmat,coppermats,aluminummats,etc.Differenttypesofpadshavedifferentroles.Someplaysalocking,anti-offrole,andsomeforsealing.Theuseofshimsaccordingtotheprovisionsandrequirementsofselect,resultinginamechanicalaccident.Forexample:whentheenginecylinderheadgasketistoothin,pronetospillsorleak,orevenwashedoutthecylinderheadgasketistoothicktomakethecylindercompressionratiolower,seriouslyaffectingthenormalworkingoftheengineandmechanicalproperties,sowe,followingintheselectionofgasketshallbeselectedtomeetthetechnicalrequirementsofthegaskettopreventaccidents.9Annexinspection
Thegeneralcategoryoftheannextotheenginealot,dieselfilter,oilfilter,airfilter,fancover,watertemperature,radiatorcaps,oilpressuregauge,sensorandsoon.TheabsenceofthenormalworkoftheAnnexinspectionandmaintenance,willseriouslyaffecttheengine,reduceenginelife,theannexinspectionandmaintenanceisessentialforextendingthelifeoftheengineiscritical.Conclusion:Thispaperdiscussestheoftenneglectedissuesintheassemblyoftheengine
Andresponsemeasures.Mustunderstandhowitworksintheassembly,inaccordancewiththeprovisionsofthetechnical
Techniquerequirementsandproceduresforassembly,tofurtherimprovethequalityofmaintenance,reduced,therefore
Theoccurrenceofimpairedrepairtheengineinthebestperformancestatus.
扩展阅读：
友情提示：本文中关于《宁波柴油发电机组维修保养》给出的范例仅供您参考拓展思维使用，宁波柴油发电机组维修保养：该篇文章建议您自主创作。
来源：网络整理 免责声明：本文仅限学习分享，如产生版权问题，请联系我们及时删除。
公文素材库友情提示：本网站所有内容为共享上传提供，不涉及任何商业利益，本站对此不承担任何保证责任！
Copyright © www.bsmz.net Corporation, All Rights Reserved 共享时代 共享你我他 版权所有