Ebe ọ bụ na isi cylinder bụ akụkụ nke ụlọ combustion, ma nhazi nke isi cylinder dị elu ga-emetụta arụmọrụ nke engine. Nke ka mma isi cylinder ahụ, nke na-arụ ọrụ engine dị elu. N'ezie, isi cylinder ga-emetụta ike.

Mgbe nnukwu carbon na-akwakọba n'ụgbọ elu isi cylinder na oghere isi cylinder dị nso, gas nwere nrụgide dị elu na-abanye n'ime oghere mkpuchi isi cylinder ma ọ bụ na-esi na nkwonkwo elu nke isi cylinder na ahụ pụta. Enwere ụfụfụ na-acha odo odo na-agbapụta n'ikuku. Ọ bụrụ na amachibidoro ntapụ ikuku nke ọma, ọ ga-eme ụda nke "n'akụkụ", na mgbe ụfọdụ ọ nwere ike iso ya na mmiri ma ọ bụ mmanụ.

Isi ihe na-eme ka ntapu ikuku isi cylinder na-akpata site na njichi na-adịghị mma nke valvụ ma ọ bụ njedebe ala nke isi cylinder ahụ. Ya mere, ọ bụrụ na e nwere ihe nkwụnye carbon n'elu akara akara nke oche valvụ, ekwesịrị iwepụ ya ozugbo. Ọ bụrụ na mkpuchi mkpuchi dị oke obosara ma ọ bụ oghere, olulu, olulu, wdg, kwesịrị ịrụzi ma ọ bụ dochie oche valvụ ọhụrụ dịka ogo. Cylinder isi warping nrụrụ na cylinder isi gasket mmebi na-emetụtakwa ntapu ikuku. Iji gbochie cylinder isi warping na cylinder isi gasket mmebi, na cylinder isi akụ ga-tighted na a mmachi iji, na tightening torque kwesịrị izute chọrọ.