Study of natural gas engine thermal efficiency improvement with a novel residual-gas cavity pre-chamber jet ignition under lean-burn conditions (opens in new tab)

<p>Publication date: 15 May 2026</p><p><b>Source:</b> Energy, Volume 351</p><p>Author(s): Yiqiang Pei, Junnan Hu, Yanzhao An, Deyang Zhao, Yuhan Zhang, Mohy Saad Mansour, Mohammed Ojapah</p>