Iyini i-crankcase system yemoto?

Uhlelo lwegesi le-Crankcase

Uhlelo lwe-crankcase ventilation system noma uhlelo lwegesi crankcase lwenzelwe ukunciphisa ukukhishwa kwezinto eziyingozi kusuka ku-crankcase ungene emkhathini. Lapho injini isebenza, amagesi aqeda ukuphuma angaphuma emakamelweni e-crumbcase. I-crankcase iqukethe uwoyela, uphethiloli kanye nomusi. Bebonke babizwa ngokuthi ngama-blow-by gases. Ukuqongelelwa kwamagesi we-crankcase kuthinta izakhiwo nokwakhiwa kawoyela wenjini, futhi kubhubhise izingxenye zenjini yensimbi. Izinjini zesimanje zisebenzisa uhlelo lokuphoqelela lomoya ongena ngenkani. Uhlelo lokufaka umoya we-crankcase kusuka kubakhiqizi abahlukahlukene kanye nezinjini ezihlukile zingaba nemiklamo ehlukile. Kodwa-ke, izakhi ezilandelayo eziphambili zesakhiwo salesi simiso ziyahluka: i-oyisihlukanisi yamafutha, umoya omncane we-crankcase kanye nama-airozzles. Isisihlukanisi samafutha sivimba amandla okugcwala kawoyela ekungeneni egumbini lokuhlangana lezinjini, ngaleyo ndlela anciphise ukwakheka kwensipho.

Sibutsetelo luhlelo lwekhadi legesi

Hlukanisa phakathi kwezindlela ze-labyrinth nezokujikeleza zokwehlukanisa uwoyela kumagesi. Izinjini zesimanje zifakwe ngokwahlukanisa okuhlanganisiwe kawoyela. Ehlukaniseni i-labyrinth kawoyela, i-cranksel yehlisa ijubane, ibangele amaconsi amakhulu e-oli ukuhlala ezindongeni bese ingena cranksel. Isahlukanisi samafutha esentrifugal sinikela ngokuhlukaniswa okwengeziwe kwamafutha kumagesi we-crankcase. Amagesi aguqayo adlula kusihlukanisi samafutha ayajikeleziswa. Izinhlayiya zika-oyela ngaphansi kwesenzo samandla amakhulu zihlala ezindongeni zohlukanisi lwamafutha bese ufaka isikhafu. Ukuvimbela isiyaluyalu ku crankcase, kusetshenziswa uhlobo lokuqalisa uhlobo lwelebhelinth ngemuva kwesihlukanisi samafutha se-centrifugal. Lokhu ukwahlukana kokugcina kawoyela emagemeni. Isistimu yomoya omncane we-crankcase.

Ukusebenza kohlelo lwegesi iCrankcase

I-valve yomoya omncane we-crankcase isetshenziselwa ukulawula ingcindezi yamagesi we-crankcase engena manifold amaningi. Ine-valve encane yokuhambisa, ivulekile. Uma kunokugeleza okubalulekile kokungenayo, i-valve iyavala. Ukusebenza kohlelo lokungena komoya we-cranksel kususelwa ekusetshenzisweni kwe-vacuum okwenzeka ekudlaleni okuphindwe kabili kwenjini. Lapho buhlanjululwe, amagesi asuswa ku-crankcase. Kuhlukanisi lwamafutha, amagesi we-crankcase ayahlanzwa kusuka emafutheni. Amagesi abese aqondiswa ngomjovo awaleke manifold amaningi, lapho ahlanganiswa khona nomoya bese eshiswa emagumbini okuhlangana. Kuzinjini ezi-turbocharged, i-crankcase ventilation throttle control inikezwa. Uhlelo lokuvuselela umphunga kaphethiloli. Uhlelo lokulawula ukuphuma kokukhipha umoya lwenzelwe ukuvikela ukukhishwa kwamagesi kaphethiloli emoyeni.

Lusetshenziswa kuphi uhlelo lwe crankcase?

Ama-vapors akhiqizwa lapho uphethiloli uvutha ethangini likaphethiloli noma lapho umfutho womoya wehliswa. Amandla kaphethiloli anqwabelana ohlelweni lapho injini isiqalile, ayakhonjiswa ngobuningi bawo futhi ayasha enjini. Uhlelo lusetshenziswa kuwo wonke amamodeli wesimanje wezinjini zikaphethiloli. Uhlelo lokubuyisa umphunga kaphethiloli luhlanganisa i-adsorber yamalahle. I-valve ye-Solenoid yokuhlanza nokuxhuma amapayipi. Isisekelo sedizayini yohlelo yi-adsorber eqoqa amavulu kaphethiloli ethangini likaphethiloli. I-adsorber igcwele izimbotshana ze-carbon ezisebenza kahle, ezidonsa ngokuqondile futhi zigcinele amandla ophethiloli. I-adsorber inezinto ezintathu zokuxhuma: ithangi likaphethiloli. Ngalo, amandla kagesi angena kwi-adsorber ngokusebenzisa amandla amaningi angaphezulu komkhathi. Ngesihlungi somoya noma i-valve yokudla ehlukile.

Umdwebo wohlelo lwegesi weCrankcase

Kwakha ingcindezi ehlukile edingekayo yokuhlanza. Umdwebo wohlelo lokuvuselela i-vaporoli. Ukukhishwa kwe-adsorber kusuka kumafutha kaphethiloli ahlanganisiwe kwenziwa ngokuhlanzwa (ukuvuselelwa kabusha). I-valve ye-solenoid ye-EVAP ifakiwe ohlelweni lwe-EVAP ukulawula inqubo yokwenza kabusha. I-valve iyisishayamthetho sohlelo lokuphathwa kwenjini futhi isendaweni yepayipi elixhuma isitsha ekuphakameni okuninginingi. Isitsha sihlanzwa ngaphansi kwezimo ezithile zenjini yokusebenza (ijubane lenjini, umthwalo). Akukho kuhlanza okwenziwa ngejubane eliyize noma ngenjini ebandayo. Lapho usebenza ngeyunithi yokulawula ngogesi, i-valve ye-solenoid iyavula.

Isimiso sohlelo lwegesi eCrankcase

Amandla wegesi kaphethiloli atholakala kwi-adsorber anikezwa nge-vacuum kokudla okuningana okwenziwe. Zithunyelwa ngamanothi amaningi bese zishiswa emagumbini okuhlangana enjini. Inani lamandla wegesi ophumayo alawulwa yisikhathi sokuvula se-valve. Ngasikhathi sinye, injini igcina isilinganiso esifanele somoya / uphethiloli. Ezinjini ze-turbo, akukho vacuum eyakhiwa ngamanani amaningi wokudla lapho i-turbocharger isebenza. Ngenxa yalokho, i-valve yezindlela ezimbili ezingeziwe ifakwa ohlelweni lwe-EVAP, olusetshenziswayo bese lithumela amandla okuphehla ugesi lapho isitsha sinxutshwe emanxebeni amaningi okudla noma kufaka i-compressor inlet ngaphansi kwengcindezi ye-piston.

Imibuzo nezimpendulo:

Kungani kuvela amagesi e-crankcase? Ngenxa yokugqokwa kweqembu le-piston. Lapho ama-o-ring eguga, ukucindezela kucindezela amanye amagesi ku-crankcase. Ezinjinini zesimanje, isistimu ye-EGR iqondisa amagesi anjalo ekushiseni ngemuva kwesilinda.

Ungawahlola kanjani amagesi e-crankcase ngendlela efanele? Ukubonakala kwamabala amafutha esihlungini somoya, izimpawu zamafutha kanye nokuhlangana kwesembozo se-valve, kuvela imivimbo yamafutha, imivimbo yamafutha ezungeze intamo yokugcwalisa kanye nesembozo se-valve, umusi oluhlaza okwesibhakabhaka ophuma ekuphumeni.

Kungani kudingeka umoya omncane we-crankcase? Lolu hlelo lunciphisa ukukhishwa kwezinto eziyingozi (ingxube kawoyela, igesi ephumayo kanye nophethiloli ongashi emkhathini) ngenxa yokushiswa kwazo ngemva kwamasilinda.