Abstract
The purpose of this study is to investigate the potential use of in-cylinder thermal and mixing stratification for reducing the pressure-rise rates in HCCI engines by going through numerical analysis with multi-zones modeling. The computations are conducted using both a standard single-zone and the custom multi-zone version of the Senkin application of the CHEMKIN II kinetics rate code, and kinetic mechanisms for Di-Methyl Ether (DME). The objective of calculation with the multi-zones model is to examine the mechanism of thermal and mixing stratified charge to reduce an excessive pressure-rise rates. The mechanism of reducing the pressure-rise rates in the thermal and mixing stratified charge is proved with 2-zones and 5-zones model. It is found that thermal and mixing stratification have the effect of reducing the pressure-rise rates (extended combustion duration) and have potential for extending the upper load limit in HCCI engines.
| Original language | English |
|---|---|
| Pages | 281-288 |
| Number of pages | 8 |
| Publication status | Published - 2008 Dec 1 |
| Event | 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008 - Sapporo, Japan Duration: 2008 Jul 28 → 2008 Jul 31 |
Other
| Other | 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008 |
|---|---|
| Country/Territory | Japan |
| City | Sapporo |
| Period | 08/7/28 → 08/7/31 |
Keywords
- Mixing stratification
- Numerical analysis
- Pressure-rise rates
- Thermal stratification
ASJC Scopus subject areas
- Automotive Engineering
- Control and Systems Engineering
- Modelling and Simulation