Autoignition temperature is fuel + oxidizer + pressure dependent; cetane-number 40+ favors compression-ignition (diesel); octane-number 87-95 resists knock in spark-ignition; primary-reference fuels n-heptane (CN=56) + iso-octane (ON=100).
Autoignition temperature is fuel + oxidizer + pressure dependent; cetane-number 40+ favors compression-ignition (diesel); octane-number 87-95 resists knock in spark-ignition; primary-reference fuels n-heptane (CN=56) + iso-octane (ON=100).