采用冷却EGR的混合动力专用发动机燃油经济性优化研究

车用发动机 ›› 2026, Vol. 0 ›› Issue (4) : 65-71.

陈俊翔¹，莫正旅¹，马百坦¹，刘秋雨^2,3，雒晶^2,3，康哲^2,3

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Fuel Economy Optimization of Hybrid Dedicated Engines Using Cooled EGR

CHEN Junxiang¹,MO Zhenglyu¹,MA Baitan¹,LIU Qiuyu^2,3,LUO Jing^2,3,KANG Zhe^2,3

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摘要

冷却废气再循环(简称冷却EGR)技术可以有效提高发动机燃油经济性、抑制爆震，同时显著改善发动机排放。本研究通过数值分析，探究采用冷却EGR技术的高压缩比混合动力发动机的燃油经济性优化机制。分别在基准发动机全负荷工况下和冷却EGR发动机部分负荷工况下对发动机性能、油耗和燃烧策略等进行了优化对比分析，得到了不同工况下的最低油耗点及对应的最优燃烧策略。本研究为混动专用发动机燃油消耗优化提供了理论依据和技术支撑。

Abstract

Cooled exhaust gas recirculation (abbreviated as cooled EGR) technology can effectively enhance engine fuel economy and suppress detonation while significantly improve engine emissions. Through numerical analysis, the mechanisms for optimizing the fuel economy of high-compression-ratio hybrid engines equipped with cooled EGR technology were investigated. Comparative analyses of engine performance, fuel consumption and combustion strategy were conducted under full load conditions of baseline engine and partial load conditions of cooled EGR engine. The lowest fuel consumption point and the corresponding optimal combustion strategy were obtained under different conditions. The study provides a theoretical basis and technical support for the optimization of fuel consumption in hybrid dedicated engines.

导出引用

陈俊翔, 莫正旅, 马百坦, 刘秋雨, 雒晶, 康哲. 采用冷却EGR的混合动力专用发动机燃油经济性优化研究[J]. 车用发动机. 2026, 0(4): 65-71

CHEN Junxiang, MO Zhenglyu, MA Baitan, LIU Qiuyu, LUO Jing, KANG Zhe. Fuel Economy Optimization of Hybrid Dedicated Engines Using Cooled EGR[J]. Vehicle Engine. 2026, 0(4): 65-71