Abstract: Both in cylinder direct injection gasoline engine and high-pressure common rail diesel engine adopt in cylinder direct injection fuel technology. Due to the different properties of gasoline and diesel, the fuel injection systems of in cylinder direct injection gasoline engine and highpressure common rail diesel engine are different. This paper makes a comparative study of the two fuel systems from the two aspects of fuel system structure and fuel injection control, which can provide a reference for the research of gasoline engine in cylinder direct injection technology and diesel engine high-pressure common rail technology.

Key words: In cylinder direct injection; High pressure common rail; Fuel system; Gasoline engine; Diesel engine

摘要： 缸内直喷汽油机和高压共轨柴油机均采用缸内直喷燃油的技术，因汽油和柴油性质不 同，缸内直喷汽油机和高压共轨柴油机结构的不同，两者的燃油喷射系统有区别。文章从燃 油系统结构组成和燃油喷射控制两方面对两者的燃油系统做了对比分析，可为汽油机缸内直 喷技术和柴油机高压共轨技术的研究提供参考。

关键词: 缸内直喷；高压共轨；燃油系统；汽油机；柴油机