内燃机工程2026，Vol.47Issue(4)：18-29,12.DOI:10.13949/j.cnki.nrjgc.2026.04.003
不同海拔下柴油机颗粒捕集器再生的载体温度特性仿真
Simulation of Carrier Temperature Characteristics of Diesel Particulate Filter Regeneration at Different Altitudes
摘要
Abstract
To address the stringent requirements of China Ⅵ emission regulations which incorporate real driving emissions(RDE)testing and include high-altitude conditions in compliance assessments,the differences in regeneration temperature characteristics between diesel particulate filters(DPF)in plateau environments and lowland regions were studied.A one-dimensional coupled simulation model of the diesel oxidation catalyst(DOC)and DPF using GT-Power was developed.The influences of target regeneration temperatures,initial carbon loading,exhaust mass flow rates,and oxygen content on the DPF substrate temperature distributions and peak temperatures under different atmospheric pressures(100 kPa,80 kPa,60 kPa)were analyzed.Results show that as the altitude increases,the overall DPF substrate temperature rises,accompanied by higher internal peak temperatures.At 80 kPa and 60 kPa,peak temperatures increased by 4.0％and 9.4％,respectively,compared to that at 100 kPa.Increased carbon loading combined with altitude elevation enhances reaction exothermicity,further elevating internal DPF temperatures—with the maximum increase of 9.4％at 60 kPa compared to that at 80 kPa.Increased exhaust mass flow enhanced heat dissipation,causing a negative correlation in peak internal temperatures,with a maximum decrease of 1.9％at 80 kPa compared to that at 100 kPa.A high-oxygen environment accelerated the rapid concentrated oxidation of carbon soot,intensifying exothermic reactions,which resulted in a maximum increase of 10.3％in peak internal carrier temperature at 60 kPa compared to that at 80 kPa condition.关键词
柴油机/柴油机颗粒捕集器/再生温度/高原环境/仿真Key words
diesel engine/diesel particulate filter(DPF)/regeneration temperature/plateau envi-ronment/simulation分类
能源科技引用本文复制引用
武红,雷基林,余明江,杨雄专,易云珠..不同海拔下柴油机颗粒捕集器再生的载体温度特性仿真[J].内燃机工程,2026,47(4):18-29,12.基金项目
云南省省市一体化专项项目(202202AC080004) Yunnan Province Provincial-Municipal Integration Special Project(202202AC080004) （202202AC080004）
