A Combustion System for Spark-Fired Gas Engines Using Diesel Compression Ratios

“Jet ignition” is a combustion system which eliminates the requirement of air modulation with varying loads in a spark-fired gas engine. Jet ignition coupled with diesel compression ratios results in a versatile engine having high thermal efficiency and simple controls. Engine governing with jet ignition only requires control of the fuel as in diesel engines. The paper describes this combustion system and the background leading to its development.