Effects of Ignition Timing and Fuel Chemical Composition on Autoignition Behavior and Knocking Characteristics under Lean Conditions
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20229070
- Paper/Info type
- SETC
No.2022-32-0070
- Pages
- 1-7(Total 7 p)
- Date of publication
- Oct 2022
- Publisher
- JSAE
- Language
- English
- Event
- SETC2022
Detailed Information
| Author(E) | 1) Kaede Shirane, 2) Toshiki Kimura, 3) Sota Nakamura, 4) Karin Furusyo, 5) Akira Iijima |
|---|---|
| Affiliation(E) | 1) Graduate School of Science and Technology, Nihon University, 2) Graduate School of Science and Technology, Nihon University, 3) Graduate School of Science and Technology, Nihon University, 4) College of Science and Technology, Nihon University, 5) College of Science and Technology, Nihon University |
| Abstract(E) | This study focused on autoignition behavior and knocking characteristics. Using an optically accessible engine, autoignition behavior was observed over the entire bore area, and the relationship between autoignition behavior and knocking characteristics was clarified on the basis of visualized combustion images and frequency analysis of the in-cylinder pressure waveform. In addition, chemical kinetic simulations were used to investigate the effects of different fuel chemical compositions on combustion and autoignition characteristics under equivalent octane ratings. The results showed that the rate of autoignition development has a significant effect on knocking intensity. In addition, the ρ1,0 mode is the dominant vibration mode caused by knocking, regardless of the location of autoignition. It can be inferred that strong knocking is caused by multiple vibration modes. Furthermore, chemical kinetic simulation results and experimental data show that different fuel chemical compositions affect the onset of autoignition. |
