Tangi rekubata oiri kana gaba rekubata mafuta mudziyo wakaiswa mucam/crankcase ventilation system pamota. Kuisa tangi rekubata oiri (can) kune chinangwa chekudzikisa huwandu hwehutsi hwemafuta hunotenderedzwa zvakare mukupinda kweinjini.
Positive crankcase ventilation
Munguva yenguva dzose kushanda kweinjini yemotokari, mamwe mhute kubva muhumburumbira anopfuura nemhete dzepiston uye ichidzika mu crankcase. Pasina kufefetera izvi zvinogona kudzvanya crankcase uye kukonzera nyaya dzakadai sekushaikwa kwepiston mhete yekuisa chisimbiso uye kukuvara kwemafuta zvisimbiso.
Kuti udzivise izvi, vagadziri vakagadzira crankcase ventilation system. Pakutanga iyi yaiwanzova yakanyanya kuseta uko sefa yaiiswa pamusoro pekamera cam uye kudzvanywa uye mhute zvaipinzwa mumhepo. Izvi zvakaonekwa sezvisingagamuchirwe sezvo zvaibvumira hutsi nemhute yemafuta kuti zvibudiswe mumhepo izvo zvakakonzera kusvibiswa. Zvinogonawo kukonzera nyaya kune vanogara mumotokari sezvo yaigona kudhonzwa mukati memotokari, iyo yaigara isingafadzi.
Around 1961 dhizaini nyowani yakagadzirwa. Iyi dhizaini yakafambisa crank breather kupinda mumotokari. Izvi zvaireva kuti mhute neoiri mhute zvaigona kupiswa uye kubudiswa kunze kwemotokari kuburikidza nemagetsi. Kwete izvi chete zvainyanya kunakidza kune vaive mumotokari zvairevawo kuti mhute yemafuta haina kuburitswa mumhepo kana kupinda mumugwagwa mune yekunyorwa kwechubhu ventilation masisitimu.
Matambudziko anokonzerwa nekutora-router crank breathers
Pane nyaya mbiri dzinogona kukonzereswa nekufambisa crank breather kupinda mukati meinjini system.
Nyaya huru ndeyekuvakwa kwemafuta mukati mepombi yekupinza uye yakawanda. Munguva yekushanda kwakajairika kweinjini iyo yakawandisa kuvhuvhuta-nemafuta emhute kubva kune crank kesi inotenderwa kupinda mukati mekudya. Iyo mhute yemafuta inotonhorera uye inoisa mukati mepombi yekupinza uye yakawanda. Nekufamba kwenguva iyi layer inogona kuvaka uye gobvu sludge inogona kuungana.
Izvi zvatonyanya kuipa nekuunzwa kweiyo exhaust gas recirculation (EGR) pamota dzechimanjemanje. The mafuta mhute anogona kusanganisa pamwe re-kutenderera pedza gasi uye chin'ai izvo zvino anovaka pamusoro kunwa manifold uye mavharuvhu etc. Iyi layer nekufamba kwenguva inoomesa uye inowedzera kakawanda. Inobva yatanga kuvharira throttle body, swirl flaps, kana kunyange mavharuvhu ekutora pane akananga majekiseni.
Kuve nekuvakwa kwesludge kunogona kukonzera kuderera kwekuita nekuda kwekumisikidza kwairi kuita pakuyerera kwemhepo kuenda kunjini. Kana iyo buildup ikava yakawandisa pane iyo throttle body inogona kukonzera kushomeka idling sezvo ichigona kuvharidzira kuyerera kwemhepo uku iyo throttle plate yakavharwa.
Kuisa tangi yekubata (can) kunoderedza huwandu hwehutsi hwemafuta hunosvika pakubata turakiti uye mukamuri yekupisa. Pasina mhute yemafuta soot kubva kuEGR valve haigoni kunyura zvakanyanya pakutora izvo zvinoita kuti kupinza kurege kuvharika.