Thermal Efficiency Improvement for a High-compression-ratio HD Diesel Engine by Utilizing an Offset Orifice Nozzle
噴孔オフセットノズルを用いた高圧縮比ディーゼル機関の熱効率向上
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- Publication code
- 20254601
- Paper/Info type
- JSAE Transaction
Vol.56 No.5
- Pages
- 908-915(Total 8 p)
- Date of publication
- Sep 2025
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 向山 智之, 2) 内田 登 |
| Author(E) | 1) Tomoyuki Mukayama, 2) Noboru Uchida |
| Affiliation(J) | 1) 株式会社 新エィシーイー, 2) 株式会社 新エィシーイー |
| Abstract(J) | 大型車用ディーゼル機関において，熱効率向上およびその元となる噴霧技術が重要である．本研究では先行研究において報告された噴孔オフセットノズルによる熱損失低減および図示熱効率改善に着目し，高圧縮比ディーゼル機関における性能評価および現象解明に向けたノズル内流れの解析，噴霧観察を実施した． Translation |
| Abstract(E) | It has been necessary to investigate into combustion phenomena and fuel spray characteristics aiming to achieve thermal efficiency improved commercial heavy-duty diesel engines. This study focuses on the simultaneous improvement in cooling loss and indicated thermal efficiency by means of an offset orifice nozzle presented in the former study, and investigates further into combustion and emission characteristics of a high-compression-ratio heavy-duty diesel engine equipped with offset orifice nozzles. Internal nozzle flow analysis by numerical simulation and observation of fuel spray were also carried out to identify the cause of significantly different combustion phenomena. |
