内燃机工程2025，Vol.46Issue(2)：72-81,93,11.DOI:10.13949/j.cnki.nrjgc.2025.02.009
甲醇/柴油双燃料发动机催化型颗粒捕集器主动再生特性研究
Study on the Active Regeneration Characteristics of Catalytic Diesel Particulate Filter in a Methanol/Diesel Dual Fuel Engine
摘要
Abstract
A simulation model of a methanol/diesel dual fuel engine with diesel oxidation catalyst (DOC) and catalytic diesel particulate filter (CDPF) was established based on GT-Power. The effects of different methanol substitution rates, regeneration target temperatures and initial soot load on the pressure drop and temperature characteristics, complete regeneration duration and cumulative diesel consumption of the CDPF in a methanol/diesel dual fuel engine during active regeneration were investigated. The results show that the regeneration target temperatures, methanol substitution rates, and initial carbon load have significant impacts on the active regeneration of CDPF. With the increase of regeneration target temperature, the rate of pressure drop decreases. Higher regeneration target temperature can easily lead to temperature peaks in CDPF. When regeneration occurs at 650 ℃ , the peak temperature of CDPF is 85 ℃ higher than the target temperature. As the methanol substitution rate increases, the pressure drops during the regeneration process slightly increases and the peak temperature of the CDPF decreases. As the initial soot load increases, the reaction rate of CDPF accelerates, the peak temperature of the CDPF and the pressure drop rate increase, and the uniformity of the internal temperature of the carrier is improved. The increase of regeneration target temperature can significantly shorten the duration of complete regeneration and reduce the cumulative diesel fuel consumption, while the methanol substitution rate has less effect on the duration of complete regeneration. With the methanol substitution rate increases from 0％ to 30％, the cumulative diesel fuel consumption for complete regeneration reduces by 27. 8％. Under the condition of 600 ℃ regeneration target temperature, 30％ methanol substitution rate, and 20 g initial soot load, high regeneration efficiency and regeneration safety with less regeneration energy consumption can be achieved.关键词
催化型柴油机颗粒捕集器/甲醇替代率/再生目标温度/初始炭载量/主动再生Key words
catalytic diesel particulate filter(CDPF)/methanol substitution rate/regeneration target temperature/initial soot load/active regeneration分类
能源与动力引用本文复制引用
黄粉莲,王永佳,万明定,周正伟,雷基林..甲醇/柴油双燃料发动机催化型颗粒捕集器主动再生特性研究[J].内燃机工程,2025,46(2):72-81,93,11.基金项目
云南省基础研究计划项目(202301AT070435) （202301AT070435）
兴滇英才支持计划项目 Yunnan Fundamental Research Projects(202301AT070435) （202301AT070435）
Yunnan Revitalization Talent Support Program Project （）
