izimpendulo zemoto yesi-fo stroke
Injini ye - four-stroke iyisimangaliso sobunjiniyela bemishini, iqukethe izingxenye eziningana ezibalulekile ezisebenza ngokuvumelana ukuze ziguqule uphethiloli ube amandla omshini. Izingxenye eziyinhloko zihlanganisa ibhulokhi yesilinda, enesiphini esihlala kuyo futhi esebenza njengesisekelo senjini, i-crankshaft eguqula ukunyakaza komugqa kube ukunyakaza okujikelezayo, nekhanda lesilinda eliqukethe ama-valve okufakwa komoya nokukhishwa kwawo. I-piston, exhunywe ku-crankshaft ngenduku yokuxhuma, inyukela phezulu naphansi ngaphakathi kwesilinda phakathi nemizuzwana emine ehlukene: ukudonsa, ukucindezela, amandla, nokukhishwa. Uhlelo lwe-valve train, oluhlanganisa ama-camshaft, ama-pushrod nama-rocker arms, lulawula ngokunembile isikhathi sokusebenza kwama-valve. Izinhlelo zokuthutha uphethiloli, ezinjengezinjini zokufaka uphethiloli noma ama-carburetor, zilawula ingxube kaphethiloli nomoya, kuyilapho uhlelo lokuvutha, olunezipompo zokuvutha kanye nezinhlelo zokuhlela isikhathi, luqinisekisa ukushiswa okufanele. Lezi zingxenye zisekelwa izinhlelo ezisizayo ezifana nokupholisa nokufaka amafutha, ezigcina amazinga okushisa asebenzayo aphezulu futhi zinciphise ukuchoboza phakathi kwezingxenye ezihambayo. Izinjini zanamuhla ezinemivimbo emine nazo zinezinhlelo eziyinkimbinkimbi zokulawula nge-elekthronikhi ezenza ukusebenza kahle nokusebenza kahle ngaphansi kwezimo ezihlukahlukene zokusebenza.