Effect of Compression Ratio on Improving Thermal Efficiency and Output Power in Hydrogen HCCI Engine Supported by DME Supplement
DMEを補助燃料とする水素予混合圧縮着火機関の熱効率と出力改善に与える圧縮比の影響
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20084646
- Paper/Info type
- JSAE Transaction
Vol.39 No.4
- Pages
- 85-90(Total 6 p)
- Date of publication
- Jul 2008
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 研究論文 Translation |
|---|---|
| Category(E) | Research Paper |
| Author(J) | 1) 鈴木 秀幸, 2) 成岡 裕介, 3) 坂下 佳史, 4) 高木 靖雄 |
| Author(E) | 1) Hideyuki Suzuki, 2) Yusuke Narioka, 3) Yoshifumi Sakashita, 4) Yasuo Takagi |
| Affiliation(J) | 1) 武蔵工業大学大学院, 2) 武蔵工業大学大学院, 3) 武蔵工業大学, 4) 武蔵工業大学 |
| Abstract(J) | DMEを補助燃料として用いる水素HCCI機関において，圧縮比の低下により熱効率と出力の向上を実現することができた．この効果は，低圧縮比化により熱発生開始時期の遅角化と燃焼の緩慢化が実現でき熱発生特性が改善されたことと燃焼の緩慢化によりノッキングの発生が抑えられ低空気過剰率での運転が可能となったことによる． Translation |
| Abstract(E) | Improvement in output power and indicated thermal efficiency were achieved by lowering compression ratio from 13:1 to 11:1 hydrogen HCCI engine supported by DME supplement. Improved output power was realized by the truth that mitigated HCCI combustion derived by lowered compression ratio enabled stable HCCI combustion without showing any knocking inλof close to 2, which is much richer than 2.7 that is limited by knocking in compression ratio of 13:1. Improved indicated thermal efficiency was achieved by the ratarded onset of heat release around 1 to 3 deg. CA compared with compression ration of 13:1 and resulted in reduced heat loss to the cylinder wall. On the contrary, since misfiring limit was also shifted to the richer mixture region, stable operating range was not always expanded. |
