Potential of Combustion Phasing Retard for Reducing Pressure-Rise Rates in HCCI Engines by use of Numerical Analysis

Abstract

The purpose of this study is to evaluate the potential use of combustion phasing retard for reducing the pressure-rise rates in HCCI engines by going through numerical analysis with multi-zones modeling. The computations are conducted using the custom multi-zone version of the Senkin application of the CHEMKIN II kinetics rate code, and kinetic mechanisms for Di-Methyl Ether(DME), n-Butane and Methane. To objective of calculation with the multi-zones model is to examine the mechanism of combustion phasing retard to reduce an excessive pressue-rise rates. It is found that combustion phasing retard have the effect of reducing the pressure-rise rates and have potential for extending the upper load limit in HCCI engines.