内燃机工程2026，Vol.47Issue(3)：161-171,185,12.DOI:10.13949/j.cnki.nrjgc.2026.03.017
混合动力高效甲醇发动机技术研究
Research on High-Efficiency Methanol Engine Technology for Hybrid Power Systems
袁爽 1韦虹 1丁佳青 1马金强 1吕希斌 1胡轲 1马学建 1张元东 1马瑞博1
作者信息
- 1. 极光湾(宁波)智能科技有限公司,宁波 315336
- 折叠
摘要
Abstract
Based on a mass-produced gasoline engine with adapted methanol fuel,the mechanisms by which stoichiometric combustion and ultra-lean burn technologies enhance the thermal efficiency of spark-ignition methanol engines were studied systematically.The core parameters and system configurations of the engine were optimized.For the stoichiometric combustion system,the compression ratio was increased to 15,and the corrosion resistance of the fuel injectors was enhanced.For the ultra-lean burn system,a 230 mJ high-energy ignition coil,a high-efficiency exhaust gas turbocharger and an optimized valve train were integrated to expand the lean burn limit.Bench tests were conducted to analyze the engine performance,emission characteristics and energy loss properties,and the challenge of identifying pre-ignition in methanol engines was addressed simultaneously.The results show that the maximum effective thermal efficiency of the methanol engine under stoichiometric combustion reached 45.96％,representing a 5.86 percentage point increase compared with that of the original gasoline engine,with total hydrogen carbon(THC)and particle number(PN)emissions reduced significantly.The maximal thermal efficiency of the methanul engine under ultra-lean burn was further increased to 48.67％,and the area with thermal efficiency above 46.00％accounted for half of the entire map.The NOx emissions decreased sharply compared with those under stoichiometric combustion.关键词
甲醇发动机/当量燃烧/稀薄燃烧/热效率/高压缩比/排放特性Key words
methanol engine/stoichiometric combustion/lean combustion/thermal efficiency/high compression ratio/emission characteristic分类
能源科技引用本文复制引用
袁爽,韦虹,丁佳青,马金强,吕希斌,胡轲,马学建,张元东,马瑞博..混合动力高效甲醇发动机技术研究[J].内燃机工程,2026,47(3):161-171,185,12.
