Abstract
Homogeneous Charge Compression Ignition (HCCI) combustion has attracted considerable interest in recent years as a new combustion concept for internal combustion engines. The HCCI combustion process has four issues to be resolved: ignition timing control, slower combustion reaction rate (maximum heat release rate), difficulty expanding stable operation to the high load region and avoidance of knocking. Supercharging is an effective means of increasing the load of an HCCI engine, but its effect on combustion is still not clearly understood. This study examined the influence of the intake air pressure on the low-and high-temperature reactions of an HCCI engine operating on DME and methane.
