刘利军,钱跃华,任雪美,等.船用甲醇双燃料发动机燃烧与缸内热负荷试验[J].内燃机工程,2025,46(4):49-54.
船用甲醇双燃料发动机燃烧与缸内热负荷试验
Combustion and Cylinder Thermal Load Experiment of a Marine Methanol and Diesel Dual Fuel Engine
DOI：10.13949/j.cnki.nrjgc.2025.04.006
关键词:船用发动机  甲醇  柴油  双燃料  燃烧  热负荷
Key Words:marine diesel engine  methanol  diesel  dual fuel  combustion  thermal load
基金项目:上海市科技计划项目（23XD1434900）
作者单位E-mail
刘利军* 中船动力研究院有限公司，上海 201206 llj@cspi.net.cn 
钱跃华* 中船动力研究院有限公司，上海 201206 qyh@cspi.net.cn 
任雪美 中船动力研究院有限公司，上海 201206 60000156@cspi.net.cn 
刘博 中船动力研究院有限公司，上海 201206 lb@cspi.net.cn 
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摘要:基于船用甲醇双燃料发动机开展甲醇进气道喷射缸内引燃技术的试验研究，重点对甲醇和柴油模式下的燃烧和缸内热负荷情况进行了比较和分析。通过试验结果发现，发动机75%负荷及以下甲醇模式的滞燃期变长，燃烧持续期变短，同时其涡轮前排气温度明显降低。同时通过缸盖和缸套温度场的测试结果分析发现甲醇模式的缸盖和缸套温度总体上明显降低，但在局部位置由于燃烧不均匀产生较大温度差异。
Abstract:The methanol port injection with diesel ignition technology was tested on a marine methanol and diesel dual fuel engine. The study was focused on the combustion and thermal load for the combustion chamber between the methanol fuel mode and the diesel fuel mode. The test results show that the ignition delay is increased and combustion duration is decreased below 75% engine load in the methanol fuel mode. Meanwhile the exhaust temperature before turbine is also reduced in methanol mode. The temperature of the cylinder cover and liner is generally reduced in the methanol mode based on the measured temperature distribution of the cover and liner. But the temperature at parts of measured points varies greatly due to the combustion nonuniformity.
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