A na-akpọkwa onye na-emezi nọmba Cetane bụ onye nrụpụta nọmba cetane dizel
Cetane ọnụ ọgụgụ diesel bụ isi index nke mgbochi akụ ihe onwunwe nke mmanụ dizel.
Ihe na-eme n'elu ihe ọkụkụ mmanụ dizel yiri nke engine mmanụ ụgbọala, ma ihe kpatara ịkụ aka dị iche.
Ọ bụ ezie na ma detonation sitere na mberede combustion nke mmanụ ụgbọala, ihe na-akpata diesel engine detonation bụ nnọọ ihe megidere nke mmanụ ụgbọala engine, n'ihi na dizel adịghị mfe na mberede combustion, mmalite nke ozugbo combustion, mmanụ ụgbọala ìgwè ke cylinder mere nke ukwuu.
Ya mere, ọnụ ọgụgụ cetane nke mmanụ dizel na-anọchitekwa anya ọdịdị nke mmanụ dizel.
Nọmba cetane bụ 100 n-cetane.Ọ bụrụ na nkwụsi ike nke ụfọdụ mmanụ bụ otu nke mmanụ ọkụ ọkọlọtọ nwere 52% n-cetane, ọnụọgụ cetane nke mmanụ bụ 52.
Iji mmanụ dizel dị elu, ịdị n'otu nke ọkụ mmanụ dizel, ike ọkụ dị elu, nchekwa mmanụ.
N'ikwu okwu n'ozuzu, igwe mmanụ dizel na-agba ọsọ nke nwere ọsọ 1000 RPM na-eji mmanụ dizel ọkụ nwere uru cetane dị 45-50, ebe igwe dizel na-agba ọsọ na obere ọsọ nke na-erughị 1000 RPM nwere ike iji mmanụ dizel dị arọ nke nwere uru cetane nke 35. -49.