Effect of supercharging on improving thermal efficiency and modifying combustion characteristics in lean-burn direct-injection near-zero-emission hydrogen engines
| Autor: | Masakuni Oikawa, Keisuke Goma, Yasuo Takagi, Yuji Mihara, Ryota Sato, Yoshihisa Kojiya |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Thermal efficiency
Materials science Hydrogen Renewable Energy Sustainability and the Environment Nuclear engineering Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Combustion Hydrogen vehicle law.invention Physics::Fluid Dynamics Ignition system Fuel Technology chemistry law Hydrogen fuel enhancement Physics::Chemical Physics Physics::Atmospheric and Oceanic Physics NOx Lean burn |
| Zdroj: | International Journal of Hydrogen Energy. 47:1319-1327 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.10.061 |
| Popis: | The authors have proposed a new combustion process called the Plume Ignition Combustion Concept (PCC), in which with an optimal combination of hydrogen injection timing and controlled jet geometry, the plume of the hydrogen jet is spark-ignited to accomplish combustion of a rich mixture. This combustion process markedly improves thermal efficiency by reducing cooling loss, which is essential for increasing thermal efficiency in a hydrogen engine while maintaining high power. In order to improve thermal efficiency and reduce NOx formation further, PCC was applied to a lean-burn regime to burn a leaner mixture globally. In this study, the effect of supercharging which was applied to recover the reduced output power due to the leaner mixture on improving thermal efficiency was confirmed along with clarifying the cause. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect