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1 前言直喷燃烧系统以其优越的燃油经济性而被内燃机界同仁所注目,其研究和应用日趋深入和广泛。但受其工作过程特征所限,直喷式燃烧过程的压力升高率(dp/dφ)大,最大爆发压力(Pmax)高,工作粗暴,燃烧噪声大,对供油系统和组织缸内空气运动均有较高的要求。因而在一定程度上制约了直喷式燃烧过程在中小缸径柴油机上的应用和发展,对内燃机工作者也提出了更高的要求。本文以排量0.9升、缸径100mm的单缸机为例,从供油系统参数的选择、燃烧室的结构
1 Introduction Direct injection combustion system with its superior fuel economy has been the focus of my colleagues in the engine sector, its research and application of more and more in-depth and extensive. However, due to the characteristics of its working process, the pressure rise rate (dp / dφ) and the maximum burst pressure (Pmax) of the direct injection combustion process are high, the work is rough and the combustion noise is large. Exercise has higher requirements. Therefore, to a certain extent, it restricts the application and development of the direct injection combustion process on the small bore diesel engine, and also puts forward higher requirements on the internal combustion engine workers. In this paper, the displacement of 0.9 liters, 100mm bore cylinder machine, for example, from the choice of fuel system parameters, the structure of the combustion chamber