抄録
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. In this study, the influence of using internal exhaust gas (EGR) and double componential fuels (n-heptane and iso-octane) on combustion characteristics of HCCI engine was investigated. As the result, the combustion speed can be slower and the knock was able to be avoided by these using.
