Ua kapa ʻia ka mea hoʻomaikaʻi helu Cetane he mea hoʻomaikaʻi helu cetane diesel
ʻO ka helu Cetane o ka diesel ka papa kuhikuhi nui o ka waiwai anti-knock o ka aila diesel.
ʻO ke ʻano o ka ʻili o ka ʻenekini kīkēkē he like ia me ka ʻenekini ʻaila, akā ʻokoʻa ke kumu o ke kīkēkē.
ʻOiai ʻo ka detonation ʻelua i hoʻomaka ʻia mai ka puhi ʻana o ka wahie, ʻo ke kumu o ka detonation ʻenekini diesel ʻo ia wale nō ke kūʻē i ka mīkini ʻaila, no ka mea, ʻaʻole maʻalahi ka diesel i ka combustion spontaneous, ka hoʻomaka ʻana o ka combustion spontaneous, ka hōʻiliʻili wahie i loko o ka cylinder i kumu nui loa.
No laila, ʻo ka helu cetane o ka diesel e hōʻike ana i ke kūlohelohe o ka diesel.
ʻO ka helu cetane he 100 n-cetane.Inā like ke kūpale kikeke o kekahi aila me ko ka wahie ma'amau i loa'a ka 52% n-cetane, he 52 ka helu cetane o ka aila.
ʻO ka hoʻohana ʻana i ka wahie diesel kiʻekiʻe, ka hoʻoheheʻe ʻana o ka mīkini diesel, ka mana wela kiʻekiʻe, ka mālama wahie.
ʻO ka mea maʻamau, ʻo nā mīkini diesel wikiwiki me ka wikiwiki o 1000 RPM e hoʻohana i ka diesel māmā me ka waiwai cetane o 45-50, aʻo nā mīkini diesel māmā a me ka wikiwiki me ka wikiwiki o ka 1000 RPM hiki ke hoʻohana i ka diesel kaumaha me ka waiwai cetane o 35. -49.