Isixhobo sevalve lelinye lawona macandelo abalulekileyo enjini, ngakumbi ekumiseleni imveliso yayo.Inoxanduva lokulawula ukuhamba kwamafutha kunye nomoya ongena nokuphuma kumagumbi okutsha enjini.Isixhobo sevalve sinezixhobo ezininzi ezidityanisiweyo, kubandakanya icamshaft, iitephu, iipushrods, iirocker, kunye neevalvu, zonke ezisebenzisanayo ukulawula ukusebenza kwenjini.
Olunye uqwalaselo oluphambili xa kufikwa kwisixhobo sevalvu ngubungakanani bokunyuswa kunye nobude bokuvulwa kwevalvu.Ukunyuswa kubhekiselele kumgama ovula ivelufa ngelixa ubude bubude bexesha apho ivalve ihlala ivulekile.Ubungakanani bokunyuswa kunye nobude bexesha ngokuqhelekileyo bumisela ukuba ungakanani umoya kunye namafutha e-injini enokuthi ithathe kuwo, nto leyo ekugqibeleni ibe nefuthe kwimveliso yayo.
Kukho iintlobo ezahlukeneyo zezixhobo zevalve ezisetyenziswa kwiinjini, kubandakanywa ikhamera enye-ephezulu (i-SOHC), i-dual-overhead cam (DOHC), kunye ne-pushrod.Nganye kwezi giya zevalvu ineenzuzo zayo kunye nezinto ezisilela kuzo, kwaye ukuqonda iyantlukwano yazo kunokukunceda ukhethe eyona ilungileyo kusetyenziso olucetywayo yinjini yakho.
Igiya yevalvu ye-SOHC, umzekelo, ilula kodwa iyakwazi ukunika amandla abalaseleyo, itorque, kunye noqoqosho lwamafutha.Igiya yevalvu ye-DOHC, kwelinye icala, intsonkothe ngakumbi kodwa inokuphucula ukusebenza kwe-injini ngokuthatha umoya ongcono kunye nokuphuma, ngakumbi kwi-RPM ephezulu.Igiya yevalve yePushrod, ehlala inxulunyaniswa neenjini ezindala, ihlala isezantsi kwaye yenzelwe itorque engaphezulu kunemveliso yamandla ehashe.
Xa kufikwa ekwandiseni imveliso ye-injini usebenzisa igiya yevalvu, eyona njongo iphambili kukufikelela kubuninzi bokuhamba komoya okunokwenzeka.Oku kungenxa yokuba ukuhamba komoya kubalulekile ekudaleni inkqubo yokutsha eyenza amandla.Enye indlela yokunyusa ukuhamba komoya kukusebenzisa isiphakamisi esiphakamileyo okanye igiya yevalvu yobude bexesha, ukuvumela injini ukuba ithathe amafutha kunye nomoya.Nangona kunjalo, le ndlela inemida yayo, isiphumo sokugqibela sixhomekeke kwizinto ezifana nokufuduswa kwe-injini, uyilo lwentloko yesilinda, kunye nokusebenza kakuhle kokutsha.
Enye indlela yokuphucula imveliso ye-injini usebenzisa i-valve gear kukwandisa ixesha levalvu ukuze uthathe ithuba le-torque ye-injini kunye namandla ehashe.Ungakufezekisa oku ngokuzama ngeeprofayili ezahlukeneyo zecam, ezichaza ukuba zivuleka kwaye zivale kangakanani iivalvu.Injongo apha kukuqinisekisa ukuba iivalve zivulwe ngokupheleleyo ngexesha lokutsha, ukuvumela ukuba ubuninzi obunokwenzeka be-fuel kunye nomxube womoya ukuvelisa amandla amaninzi.
Ukuqukumbela, igiya yevalvu licandelo elibalulekileyo kuyo nayiphi na injini, kwaye ukuqonda ukuba iyichaphazela njani imveliso ye-injini kunokukunceda wenze ngcono ukusebenza kwe-injini yakho.Qinisekisa ukuba ukhetha igiya yevalvu echanekileyo yokusetyenziswa okucetywayo yi-injini yakho kwaye ulinge ixesha levalvu ukuphumeza ukuhamba komoya okuphezulu kunye nokukhutshwa kwamandla.Okokugqibela, hlala uqwalasela ukhuseleko kunye nokuthembeka xa ulungiselela ukusebenza kwe-injini yakho kwaye udibane nengcali ukuba awuqinisekanga malunga nokwenza naluphi na utshintsho kwigiya ye-injini yakho.
Ixesha lokuposa: Apr-19-2019