Effects of Port Fuel Injection of Liquid Ammonia on Intake Air Mass and Combustion Characteristics in a Spark-Ignition Engine
火花点火エンジンにおける液体アンモニアのポート噴射が吸気量および燃焼特性に及ぼす影響
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- Publication code
- 20264198
- Paper/Info type
- JSAE Transaction
Vol.57 No.2
- Pages
- 386-391(Total 6 p)
- Date of publication
- Mar 2026
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 大友 光彰, 2) 増井 英陽, 3) 宮川 浩, 4) 中谷 規之介, 5) 竹内 正 |
| Author(E) | 1) Mitsuaki Ohtomo, 2) Hideaki Masui, 3) Hiroshi Miyagawa, 4) Norinosuke Nakatani, 5) Tadashi Takeuchi |
| Affiliation(J) | 1) (株)豊田中央研究所, 2) (株)豊田中央研究所, 3) (株)豊田中央研究所, 4) (株)豊田自動織機, 5) (株)豊田自動織機 |
| Abstract(J) | 液体アンモニアのポート噴射による潜熱を利用した吸気冷却による吸気量向上及び燃焼特性への影響をシミュレーション及びエンジン実験により確認した．燃焼期間やエミッションの悪化が起こることなく吸気量が増加しIMEPが向上したが、すべてのアンモニアの潜熱が利用できていないことが分かった． Translation |
| Abstract(E) | The effects of intake-air cooling achieved through the latent-heat absorption accompanying the evaporation of port-injected liquid ammonia in a spark-ignition engine were investigated using both experiments and one-dimensional simulations. Port injection of liquid NH3 increased the intake-air mass without altering the combustion duration or the levels of the key emission species, namely unburned NH3, N2O and NOx. However, the latent heat of NH3 was not entirely utilized for intake-air cooling, suggesting that part of it was absorbed by the wall surfaces or lost due to incomplete evaporation. To elucidate the underlying mechanisms governing the in-port behavior and evaporation process of liquid NH3, further studies employing 3D CFD are required. |
