N'ihi na kpọmkwem okpomọkụ ike nke mmiri bụ nnukwu, okpomọkụ ịrị elu mgbe absorbing okpomọkụ nke cylinder block bụ ọtụtụ, otú okpomọkụ nke engine site jụrụ mmiri mmiri mmiri circuit, ojiji nke mmiri dị ka okpomọkụ ụgbọelu okpomọkụ conduction, na wee site na nnukwu ebe nke ikpo ọkụ na-ekpo ọkụ n'ụzọ nke convection okpomọkụ dissipation, iji nọgide na-arụ ọrụ kwesịrị ekwesị okpomọkụ nke dizel generator engine.
Mgbe mmiri ọkụ nke engine generator diesel dị elu, mmiri na-agbapụta mmiri na-agbapụta mmiri ugboro ugboro iji belata okpomọkụ nke engine ahụ, (Oké mmiri ahụ bụ nke nwere oghere ọla kọpa. Mmiri dị elu na-abanye na tank mmiri site na ikuku. oyi na mgbasa na mgbidi cylinder engine) iji chebe engine, ma ọ bụrụ na oyi mmiri okpomọkụ dị oke ala, oge a ga-akwụsị mgbasa mmiri, iji zere dizel generator engine okpomọkụ dị ala.
Mmiri mmanụ dizel na-arụ ọrụ dị oke mkpa na ahụ dum nke generator, ọ bụrụ na ejiri tank mmiri ahụ eme ihe n'ụzọ na-ekwesịghị ekwesị, ọ ga-emebi engine diesel na generator, ọ ga-eme ka engine diesel na-ekpochapụ n'ọnọdụ dị njọ. Ya mere, ndị ọrụ ga-amụta iji mmanụ dizel generator setịpụrụ tank mmiri nke ọma
