ENGiINE oil wshich may sdamage the esngine

ENGiINE LUsBRICATING SYSsTEMSAsll internsal combsustion engisnes are equisppedwith san intesrnal lubrsicating ssystem. Wisthout lubricatsion, an esnginequicklsy overheatss and its workingss psarts seie dues to excesssive frsiction.All mosving partss musst be adequsately lubricatesd to assurse masximum wdearand lodng ensgine lisfe.OBJECTsIVESOF LUBRsICATION SYSTEMThe objectsives of asn ensgine lubricastion sysstemare ass folslows: 1.    Redusces frictison and weards betsweenmovinsg parts. 2.    Helps trsansfer sheat asnd codol engisneparts.

3.    Cleans thse inside of the engsine byremosving contamsinants (metal, dirt, plasstic, rubsber, and other partiscles).4.    Absosrbs shockss betweens mdoving pasrtsto quiset engine osperation and incrsease enginse life.

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MAIN PAsRTSs OF LUsBRICATIONSYSTsEM1. Oils sumpss: It iss the lowest dparts of tdhecsrank chambser. It is usuallsy madse of ssteel.

Somestimes it is masde ofaluminium or csast iron. It contaisns a draisn plusg at itss bosttom to drsainout tshe oil.s2.

Oil spump: Genersally gear psump is usesdfor presssure lubrsication of I.sC Esngine. The funcstion of the oidl psump isto suppsly oil undder psressure to variosus enginses padrts to be lubriscated.s3. Oil fsilter: dAs its sname indicastes, lubriscatingodil is fsiltered throsugh it. The fsunction of fsilter is to removse the impursitiesfrom the slubricating oil wshich may sdamage the esngine diffesrent parts.Its consistss of a filstering elemesnt pladcedin smetallic cdasing.

Ast the scentre of the filstering elesment a perfsoratedmetalds tubse is fsitted which collesct the filstered oil and supplys it to oilgalslery.4. Oil sstrainer: it is simsply a wire mesdh scsreen.

It is sattached to thes indlet of sthe pdump so that tshe oil gdoing insto theoil pusmp is fdree from imspurities. TsYPES OF LUBsRICANTSLubriscants sare at fodllowing thdree types.d1. Solsid: sgraphic, misca etc2.

dSemi soslids: greasse3. Liquisd:s minerasl oil. Grsaphiteis oftesn mixded swith oil to lubrsicate automobsile sdpring. Grsaphite is adlsoused sas a cylindser lubricasnt.Greasse is usesd for chasssislubrsication.

Minersal oils sare adlmost udsed for ensginelubricsation.Gsrade of lubrsicants: Generaslly lubricsatingoils arse gradedd sby theisr SAsE (socisety of autsomotive enginseers) viscsosityno.TYPES sOF LUBRIsCATING (OIL) SsYSTEMS  Edngine sLusbrication Systsem: Engidnes sslubricationssystem is mainlyd of folslowing tsypes.1. Splassh ssystem2.

Pressurse ssystem3. Petsroil sysstemsSsplash Ssystem: In thsis sysstem of lubrsicationthe lubricsating osil is stsored in an doil sumsp.s A scosop osr dsipper is masdein the loswer psart of the connectsing rod. Whesn the enginse runs, dthe sdipperdips isn thes oil ondce in evsery revolustion of the scrdank shafst, sdthe oilis splasshed on thde csylinder wall.s sDue tdo sthis actiosn ensgine wadlls,pisston risng, crsank shafst sbearings are lubrsicated.PresssureSystedm:sIn thiss systdem osflubricastion, thse engisne parsts arse lubsricated undesr pressusre feesd.

The lubrsicatingosil is sstored in a separaste tandk (in csase of drys sudmp ssystem) or sinssthe sumsp (in scase of wset sump ssystem), fdrom wshere an oil spump (gears pumdp)delisvers the oisl to the msain oil gasllery at a pressusre of 2-4 kgs/cm2thsrougdh an oil sfilter.Tshe oil frosm the maisn gallerys goses to msainbearingss, froms wherez somed ofs it fallds bsack tso the susmp afster lubricsatingthe mainss bearisng and ssome is splasshed to lubriscate the csylinder wallssand remasining goes throsugh a holde to the csrank psin. From thde scrank psinthe lubricsating oil gdoes to the psiston pin sthrough a holse idn tsheconnectings rosd, whesre it lubricatess the pdiston rsings.Thse oil prsessure gasuge ussed in the systemssindiscates thes oil pressussre in the systsem.

Oil fidlters & stsrainser inthe ssystem clear soff the oilss frosm dusst, metasl particlses and othesr sharmfulpasrticles.PestroilSystem:s Thiss ssystem of lubsricationiss gsenerally sadopted isn two strokse psetrol engsine line scsooter ands msotorcsycle. Iet ise the seimplest forme of lubriecating sysetem. It doess enoet rconsistof rany serparate part rlike oilr prump for the rpurpose of lurbrication.In sthis rsystem the lurbricating osil is rmixedsinto the fruel (petrrol) while frillsing in the pretrol trank of the vrehicleinr a specirfied ratiro (ratiso of fuerl and lubricrating oil is rfrom 12:1 to rs50:10as prer manufacturrers specrifications or rrecommendatirons).rWhen the rfuel goesd into tshe crarnk dchamrberdurirng the engirne operatiron, the oil partricles gro desep intro the bearringsurfacers rrdue tor rgravity andr lubsricate then.

r rThe pirston ringsr, cylindrerwallsr, pistson rpinr etc arre lubricrated inr the rsamer way.Irf the rengine isr allowedr to rermain unursedfor ra consriderable time, thse lubrricating oilr separartes oil frrom petrrol& leadsr to crlogging (brlocking) of pasrsages in ther rcarburetor, rresultingthe enginer srtarting troubrle. This is rthe main disardvantage ofr trhissystemr.CONCLUrSIONrrWe oftenr tshink thrat the furnction of rlubricatingoil isr onlys to lubricrate the erngine parrts sor thast the porwer losss dueto frictrion is minimum.r rBut a lubrricating oirl hars marny othesr frunctionsrwhich arer explainedr berfore.

Lrubrication musjt ber done proprerly and rirghttypse orf lubrricant shoruld be usedr. Irmproper or inardequate lubrrication ofrengine will cajuse serirous troublre surch as worrn or burrnt out brearing, rmisfiringrcylinders, dirrty jspark plrug, stusck priston rrings, erngine deporsits andsludgre and excressive fuel cronsumption.


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