Inkqubo yexesha yinxalenye ebalulekileyo kaloliwe wevalvu we-injini kwaye yenye yezinto ezibalulekileyo zokuqinisekisa ukuphefumla kakuhle kwe-injini.

Umsebenzi we-sprocket yexesha ulingana nebhanti lexesha. Yinxalenye ebalulekileyo yenkqubo yokuhambisa igesi ye-injini. Idibaniswe ne-crankshaft kwaye isebenzisana nomlinganiselo othile wokuhambisa ukuqinisekisa ukuchaneka kokuthatha kunye nexesha lokuphelisa.

Indima ye-sprocket yexesha kukuba xa injini isebenza, i-piston stroke (i-up and down movement) ukuvula kunye nokuvala ivalve (ixesha) ukulandelelana komlilo (ixesha), phantsi koqhagamshelwano lwe "ixesha", hlala ugcina "ulungelelwaniso" " Baleka.

Ngexesha lenkqubo yokusebenza ye-injini yemoto, iinkqubo ezine zokungena, ukunyanzeliswa, ukuqhuma, kunye nokukhupha ngokuqhubekayo kwenzeka kwi-cylinder, kwaye ixesha lenyathelo ngalinye kufuneka lihambelane nemeko yentshukumo kunye nendawo yepiston, ukwenzela ukuba ukungena. kunye ne-exhaust Piston lifts zilungelelaniswe kunye, kwaye ii-sprockets zexesha zidlala indima "njengebhulorho" kwi-injini, idlulisela amandla kwiindawo ezihambelanayo phantsi. ukuqhuba kwe crankshaft.