内燃机工程2025，Vol.46Issue(5)：52-61,10.DOI:10.13949/j.cnki.nrjgc.2025.05.006
面向商用车动力的甲醇发动机热效率提升路径与工程实践
Path and Engineering Practice of Improving Thermal Efficiencies of Methanol Engines for Commercial Vehicle Power
宋志辉 1何建祥 1张志敏 1邱继虎 1赵阳 1李东利 1刘岩 1沈源2
作者信息
- 1. 浙江绿色智行科创有限公司,宁波 315300
- 2. 浙江吉利控股集团有限公司,杭州 310000
- 折叠
摘要
Abstract
To address the low thermal efficiency of a heavy-duty spark-ignition methanol engine with an ω-type combustion chamber,an optimization study was conducted based on a 13 L methanol engine.The combustion system was redesigned by replacing the ω-type chamber with a pent-roof configuration,converting the helical swirl intake port to a high-tumble flow design,and modifying the piston crown accordingly.Additional enhancements included redesigning the cam profile,cooling water jacket,intake/exhaust systems,and matching a dedicated turbocharger based on methanol fuel characteristics.The optimized design was validated using CAE analysis.Results demonstrated that the brake thermal efficiency improved from 42.0%to 50.2%,achieving an 8.2-percentage-point increase with a relative improvement of 19.5%.关键词
甲醇/发动机/热效率/重型商用车Key words
methanol/engine/thermal efficiency/heavy commercial vehicle分类
能源科技引用本文复制引用
宋志辉,何建祥,张志敏,邱继虎,赵阳,李东利,刘岩,沈源..面向商用车动力的甲醇发动机热效率提升路径与工程实践[J].内燃机工程,2025,46(5):52-61,10.
