Lean Combustion Enhancement and Decarbonization Technologies for Natural Gas Engines
天然ガスエンジンの希薄燃焼促進と脱炭素技術 (AI 翻訳)
Zhaojie Shen, Leyuan Wang, Lu Han, Hua Zhao, Fuqiang Wang, Guene Lougou Bachirou, Emmanuel Nyankson, Benjamin Agyei-Tuffour, Abu Yaya, Quanqing Yu, Wenzheng Cui
🤖 gxceed AI 要約
日本語
本研究は天然ガスエンジンの燃焼性能と排出特性向上に焦点を当て、希薄燃焼条件下でのメタンスリップや燃焼速度低下などの課題を分析。乱流促進、高エネルギー点火、燃料反応性調整、ゼロカーボン燃料との併用などの技術をレビューし、誘導噴流燃焼という新コンセプトを提案。天然ガスエンジンを低/ゼロカーボン燃料への移行技術として位置づける。
English
This study analyzes key challenges in natural gas engine combustion, including slow combustion and methane slip under lean conditions. It reviews technological solutions such as turbulence enhancement, high-energy ignition, fuel reactivity modification, and synergy with zero-carbon fuels. A new combustion concept called induced jet flame combustion is proposed, showing potential for improved efficiency and stability. The paper positions natural gas engines as a transitional technology supporting decarbonization goals.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では天然ガスを移行燃料として活用しており、トラックや船舶などでのエンジン技術改善はGHG削減に寄与する。本論文の技術的知見は日本のエンジンメーカーや研究者にとって有用である。
In the global GX context
Globally, natural gas engines are considered a bridge towards zero-carbon transport. This paper provides a comprehensive review of combustion enhancement technologies, which is relevant for developing cleaner heavy-duty and marine engines.
👥 読者別の含意
🔬研究者:This paper offers a systematic review and a novel combustion concept (induced jet flame) that researchers in engine combustion and alternative fuels may find valuable.
🏢実務担当者:Engine manufacturers and powertrain engineers can use the categorized technological solutions to improve natural gas engine efficiency and reduce methane slip.
📄 Abstract（原文）
This study explores key technological challenges and innovative strategies for improving the combustion performance and emission characteristics of low-carbon fuel engines, with a focus on natural gas applications. The core bottlenecks of natural gas combustion, including slow combustion speed and high methane slip under lean burn conditions due to wall quenching, crevice effects, and the long distance of flame propagation from the ignition zone to the whole cylinder, are analyzed. The decarbonization of engines further aggravates these issues. Technological solutions are summarized in four categories, including turbulence enhancement, high-energy ignition, fuel reactivity modification, and fuel synergy with zero-carbon fuels. Geometry modifications of the combustion chamber, dual-fuel operation, pre-chamber ignition, and fuel activation are systematically reviewed and evaluated. A fusion technology integrating diesel pilot ignition with jet flame propagation is analyzed as a new combustion concept, termed induced jet flame combustion. This approach demonstrates significant potential in enhancing both combustion efficiency and stability, especially for lean burn conditions. This work highlights the role of natural gas engines as a transitional technology and a support platform for ultralow-emission and high-efficiency power systems fueled with low/zero-carbon fuels in the context of global decarbonization goals.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/en19112675first seen 2026-06-03 05:51:00
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