Analysis of the Effect of Residual Gas on HCCI Combustion Spatial Structures Using Chemiluminescence Measurements with a 4-Stroke Optical Accessible Engine and Rapid Compression Machine 18ICES/022
Authors
Satoshi Ketadani - Keio University
Kengo Kumano - Keio University
Norimasa Iida - Keio University
Abstract
In the combustion chamber of the Homogeneous Charge Compression Ignition (HCCI) engine, inhomogeneity of fuel concentration, gas temperature, and gas composition exist that are produced by inlet condition, residual gas, flow, and heat transfer through the wall. HCCI combustion depends on the chemical reaction of fuel and oxygen. Therefore HCCI combustion is affected by these inhomogeneity. In this study, the effect of residual gas that generates inhomogeneity of gas temperature and gas composition in the combustion chamber on HCCI combustion was investigated with a 4stroke-engine and Rapid Compression Machine. The sample fuel was Di-methyl ether (DME). As a result, under the condition in which exists residual gas, chemiluminescence intensity was distributed more than under the condition of nonexistence of residual gas.