Investigation of Dimethyl Ether Dual-Fuel Combustion Using Propane and Ethanol as Premixed Fuel
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20239258
- Paper/Info type
- Other International Conferences
- Pages
- 1-11(Total 11 p)
- Date of publication
- Aug 2023
- Publisher
- JSAE & SAE
- Language
- English
- Event
- 2023 P, E&L
Detailed Information
| Category(E) | IC2 CI Injection and Combustion, High Efficiency, Optimization of Engine Operating Area |
|---|---|
| Author(E) | 1) Simon LeBlanc, 2) Linyan Wang, 3) Xiao Yu, 4) Ming Zheng |
| Affiliation(E) | 1) University of Windsor, 2) University of Windsor, 3) University of Windsor, 4) University of Windsor |
| Abstract(E) | The combustion and emission characteristics of reactivity-controlled compression ignition were investigated using low-carbon fuels in a single-cylinder research engine. Ethanol and Propane, two fuels of low reactivity, were premixed in the intake port. Dimethyl Ether (DME) was used as the direct injection fuel for its high reactivity and low propensity to form soot. In doing so, the classical NOx-soot trade-off with diesel combustion was absent. An off-board fuel injection system dedicated to DME was used to handle high-pressure DME without additives. Combustion analysis was conducted based on in-cylinder pressure measurements while detailed speciation of engine-out emissions was performed via infrared spectrometry (FTIR). Although the ignition delay increased with premixed energy ratio, injection timing advance, and EGR dilution, disparities were observed amongst premixed fuels. A wide injection timing window with EGR dilution was used to achieve ultra-low NOx and soot with acceptable combustion efficiency. Because of the low combustion temperatures and reduced oxygen availability, incomplete combustion products rise, and combustion efficiency drops accordingly. Based on the results, the ignition capability of propane-DME fueled combustion was more resilient to lower cylinder temperature and higher dilution environments. As such, higher dilution could be employed allowing for further NOx emission reductions without hindering combustion efficiency. |
