Abstract
Combustion characteristics of intake port injected ethanol ignited by diesel fuel was studied experimentally on an optical engine by changing the duration and timing of diesel injection. Because of the effect of ethanol evaporation, the compression temperature is decreased compared with that fueled with diesel experiments, leading to the reduction of compression pressure by 0.3-0.5, MPa, increasing the ignition delay by 10-15°, CA and presenting a clear blue flame. In addition, under the condition of this study, at diesel injection timing of 16°, CA BTDC, typical combustion of ethanol ignited by diesel was presented, and the phases of maximum cylinder pressure and the 50% HR were 9.6°, CA ATDC and 9.1°, CA ATDC, respectively, indicating a higher combustion efficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 296-301 |
| Number of pages | 6 |
| Journal | Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) |
| Volume | 32 |
| Issue number | 4 |
| Publication status | Published - 25 Jul 2014 |
Keywords
- Combustion
- Diesel engine
- Dual-fuel
- Visualization