Injini ye-SOHC (single overhead camshaft) ayivamisile ukusetshenziswa kumamodeli ajwayelekile wokufuduka okuphezulu emakethe, ngoba isivinini esisetshenziswa kakhulu sezithuthuthu siphezulu.

Isakhiwo se-SOHC silula kunaleso se-DOHC, kodwa nakuba sine-camshaft eyodwa kuphela, idinga ukudluliselwa kuma-valve amane ngezingalo ezimbili ze-valve rocker ukulawula ukuvulwa nokuvala ama-valve.

inzuzo:

Ngenxa yokuthi kune-camshaft eyodwa kuphela, eshayelwa igiya lesikhathi ngqo, injini ayithinteki kakhulu uma ijikajika i-camshaft uma ijubane likhuphuka, futhi ikwazi ukuqedela ukuphuma kwengxenye yejubane eliphansi ngokushesha okukhulu.Izindleko zokunakekela ziphansi, isakhiwo silula, futhi uphethiloli uyonga emigwaqweni evame ukusetshenziswa enejubane eliphansi.

Ububi:

Ngesivinini esiphezulu, ngenxa yokunwebeka okungokwemvelo kwengalo ye-valve rocker, kunezingxenye eziningi ezibuyiselanayo ezikhiqiza inertia.Ngakho-ke, ukulawulwa kwe-valve stroke ngesivinini esiphezulu kungase kuntule ukuzinza nokunemba, futhi kungase kube nokudlidliza okungadingekile noma umsindo.

I-DOHC

Njengoba igama lisho, i-DOHC ngokwemvelo ishayela ama-camshaft amabili.Ngenxa yokuthi ama-camshaft amabili, ama-camshaft angakwazi ukuzungeza futhi acindezele ama-valve ngokuqondile.Ayikho indlela ye-valve rocker arm, kodwa idinga amaketanga amade wesikhathi noma amabhande ukushayela.

inzuzo:

Uma sikhuluma ngokwesakhiwo, ukuzinza kanye nokunemba kokushintshwa komoya okuphezulu kwenjini kungcono, okusiza ukukhulisa ukusebenza kwenjini.Ngenxa yokungabikho kwezinsiza eziningi eziphindaphindayo kanye nemidiya yokudlulisela, ukulawula ukudlidliza kungcono.Ukusetshenziswa kwamakhamera amabili azimele kuvumela ukusetshenziswa kwegumbi elivuthayo elimise okwe-V, futhi i-valve angle nayo ingaguquguquka kakhulu ekuklanyeni.I-spark plug ingafakwa phakathi nendawo yegumbi elivuthayo, okwenza umnikelo othile ekushiseni okufanayo okupheleleyo.

Ububi:

Ngenxa yesidingo sokushayela amakhamera amabili, kuzolahleka i-torque endaweni enesivinini esiphansi senjini.Ngenxa yesakhiwo sayo esiyinkimbinkimbi, izindleko zokunakekela kanye nokulungisa kanye nobunzima ziphakeme kunalezo ze-SOHC.

Ezinjinini ezinkulu ezishintshayo, izinjini eziningi zisebenzisa i-DOHC ngenxa yokuthi isakhiwo singenza kangcono ikhwalithi yokushayela yezinjini ezinkulu ezishintshayo, futhi ukusebenza kwamandla okushaywa indiva okukodwa kwezinjini ezinkulu ezigudluza nakho kunamandla, futhi isilinganiso sokulahlekelwa kwe-torsion ephansi sizoba sincane.

Njengezimoto, uma izimoto zasendlini ezincane ezinezimo ezincane kakhulu zifakwe i-DOHC, kungcono ukucindezela izindleko nokuthuthukisa ukusebenza kahle kwezindleko kunokusebenzisa i-SOHC ngokungaguquki ukuze uthuthukise ulwazi lomsebenzisi.

Kodwa-ke, kufanele kugcizelelwe ukuthi izimoto ze-DOHC azinayo i-torque ephansi ephansi, futhi izimoto ze-SOHC azinayo i-torque ephansi eqinile.Kusancike kuzilungiselelo zokushuna kwezinye izingxenye zenjini.Lezi zakhiwo ezimbili zithinta kuphela amandla okusebenza kwenjini kanye nokonga kukaphethiloli kanye nekhwalithi ngaphansi kwezimo ezithile zokusebenza.