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面对日益严格的排放标准以及化石燃料资源日益紧缺的现状，开发清洁燃料以逐步替代传统化石燃料成为关键举措。基于某船用柴油/正丁醇双燃料发动机，利用AVL-Fire软件建立了其缸内燃烧工作过程仿真模型。在正丁醇掺混比例为20%、并与柴油在主喷射阶段同步喷射的条件下，重点探究了预喷-主喷-后喷三次喷射策略在75%负荷工况下对发动机性能的影响。研究结果表明，预喷正时、预喷比例、主喷正时及后喷比例等因素均会对缸内燃烧过程产生不同程度的影响，进而引起缸内爆发压力、缸内温度、制动比油耗(BSFC)以及常规污染物排放量的变化。合理配置喷射控制参数有助于改善燃烧并降低排放。
Abstract：Facing increasingly stringent emission regulations and the growing scarcity of fossil fuel resources, the development of clean fuels to gradually replace traditional fossil fuels has become a critical initiative.Based on a marine diesel/n-butanol dual-fuel engine, this study established a simulation model of its in-cylinder combustion process using AVL-Fire software.Under the condition of a 20% n-butanol blending ratio and its simultaneous injection with diesel during the main injection stage, the study focused on investigating the impact of a triple-injection strategy(pilot-main-post) on engine performance at a 75% load condition.The results indicate that factors such as pilot injection timing, pilot injection proportion, main injection timing, and post injection proportion all exert varying degrees of influence on the in-cylinder combustion process.This, in turn, leads to changes in-cylinder peak pressure, in-cylinder temperature, brake specific fuel consumption(BSFC),and conventional pollutant emissions.Rational configuration of the injection control parameters contributes to improve combustion and reduce emissions.
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基本信息:
DOI：10.20062/j.cnki.CN37-1453/N.2026.01.010
中图分类号:U664.1
引用信息:
[1]杨思干,刘小四,桂春元.船用柴油/正丁醇双燃料发动机三次喷射策略研究[J].鲁东大学学报(自然科学版),2026,42(01):88-96.DOI:10.20062/j.cnki.CN37-1453/N.2026.01.010.
基金信息:
安徽省教学改革项目(2022zygzsj021)