GASOLINE DIRECT-INJECTION COMPRESSION-IGNITION ENGINE FOR LOW OCTANE FUELS

摘要

A GDCI engine (12) has a piston (16) arranged within a cylinder (14) to provide a combustion chamber (18). According to one embodiment, the GDCI engine (12) operates using a method that includes the steps of supplying a hydrocarbon fuel to the combustion chamber (18) with a research octane number in the range of about 30-65. The hydrocarbon fuel is injected in completely stratified, multiple fuel injections before a start of combustion and supplying a naturally aspirated air charge to the combustion chamber (18).