内燃机工程2026，Vol.47Issue(2)：1-9,9.DOI:10.13949/j.cnki.nrjgc.2026.02.001
运行工况对甲醇压燃发动机燃烧和排放的影响
Effects of Operating Conditions on Combustion and Emissions of Methanol Compression Ignition Engine
摘要
Abstract
In order to explore the combustion and emission characteristics of the methanol compression ignition engine under different operating conditions,based on a methanol compression ignition engine modified from a 7.7 L diesel engine with compression ratio of 21.5,the effects of operating conditions on combustion and emissions of methanol compression ignition engine at intake temperature of 150℃were investigated.The results indicate that the effective thermal efficiency is the highest at medium loads(0.8～1.2 MPa break mean effective pressure),and the highest effective thermal efficiency is 38.6%.The effective thermal efficiency decreases with the increase of the rotational speed.As the load increases,NOx emissions first increase and then decrease,while the CO emissions first decrease and then increase.N2O,HC,unburned methanol emissions gradually decrease,and soot emissions decrease rapidly and tend to zero.Formaldehyde emissions first increase and then decrease at low speeds,and gradually decrease at medium and high speeds.As the speed increases,NOx emissions decrease significantly,and there is little difference in NOx emissions at medium and high speeds.There is little difference in soot,CO,HC,N2O,unburned methanol and formaldehyde emissions at different speeds.关键词
甲醇压燃/运行工况/燃烧特性/常规排放/非常规排放Key words
methanol compression ignition/operating conditions/combustion characteristic/regulated emissions/unregulated emissions分类
能源科技引用本文复制引用
张钊,吴洋亦,金超,刘海峰,牛钊文,尧命发..运行工况对甲醇压燃发动机燃烧和排放的影响[J].内燃机工程,2026,47(2):1-9,9.基金项目
广西科技重大专项项目(桂科AA24206030) （桂科AA24206030）
成都信息工程大学科研基金项目(KYTZ2023025) Guangxi Science and Technology Major Program(Guike AA24206030) （KYTZ2023025）
Research Fund of Chengdu University of Information Technology(KYTZ2023025) （KYTZ2023025）
