Combustion Performance of Methane Fermentation Gas with Hydrogen Additi on under V arious I gnition T iming s
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20229043
- Paper/Info type
- SETC
No.2022-32-0043
- Pages
- 1-10(Total 10 p)
- Date of publication
- Oct 2022
- Publisher
- JSAE
- Language
- English
- Event
- SETC2022
Detailed Information
| Author(E) | 1) Hongliang Luo, 2) Yu Jin, 3) Yanzhao An, 4) Yukihiko Matsumura, 5) Takayuki Ichikawa, 6) Wookyung Kim, 7) Yutaka Nakashimada, 8) Keiya Nishida |
|---|---|
| Affiliation(E) | 1) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan, 2) Institute for Energy Research, Jiangsu University, Zhenjiang, 212013, PR China, 3) State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China, 4) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan, 5) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan, 6) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan, 7) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan, 8) Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan |
| Abstract(E) | Hydrogen (H2) addition is widely used for natural gas combustion to improve the engine efficiency. However, less attention was paid on the various ignition timings for the maximum brake torque (MBT) and brake thermal efficiency (BTE). In order to check the ignition timing effect, experiments were performed in a spark ignition engine with engine speed fixed on 1500 revolutions per minute (rpm). Firstly, CH4 was only used for combustion with excess air ratio (λ) changing from 0.8 to 1.4. Then, co-combustion of 50 vol% CH4 and 50 vol% CO2 was checked to simulate methane fermentation gas. Finally, H2 was added with volume percentage varying from 5% to 20%. Among these discussions, torque, brake mean effective pressure (BMEP), BTE and cylinder pressure were evaluated. Based on the results, high efficiency can be achieved by advancing the ignition timing with H2 addition at λ=1.4. However, with H2 addition, the ignition timing should be retarded to obtain higher BTE. At the lean-burn condition, through delaying the ignition timing at -20° CA TDC, BTE of 20% H2 addition reaches to 22%, which is even higher than that of CH4 only combustion at stoichiometric condition. Furthermore, the optimal working region for the mixed gas combustion is mapped under various conditions. Besides, H2 addition could improve the combustion stability and decreases CCV and COV in Pmax. |
