【摘要】 本文研究了直喷式无涡流浅 型燃烧室油膜－雾化燃烧方式．其混合气形成 和燃烧过程，不同于常规的直喷式．也有别于Ｍ过程．其中 ７型渍膜－雾化燃 烧方案在直喷式 ６Ｅ１５０Ｃ型柴油机上获得了比原机的耗油率下降近１２克／马力小 时，爆压下降６公斤／厘米２的好效果．文中分析了 ７型方案的燃烧特点．论述 了组织其混合气形成和燃烧过程的基本思想，并提供了各种因素对油膜－雾化燃烧 的影响情况。更多还原

【Abstract】 This paper gives the research experiment of film- space atomization corn- bustion in a direct injection, no swirl and shallow type chamber. The mixing and combustion processes are quite different from those of ordinary direct injection and M-process. The nozzle has a larger hole diameter arid a smaller injection angle. The fuel injection is ended before the ignition and the film is formcd on about 75% area of type chamber wall. During the ignition delay period, only a little part of injected fuel mixes with air in the chamber space arid forms a combustible mixture . The ignition begins at multiple nuclei and quickly engulfs this already mixed part of the fuel. Therefore the initial rate of burning is controlled. After ignition, under the combined influence of chamber wall temperature, flame emission and diffusion, and stronger reverse squish of combustion, the film evaporates and mixes with air rapidly and the burning rate becomes larger and larger. Thus the middle period combustion is accelerated, hence the duration of combustion process is decreased. With the improvement of model E1500 diesel combustion, time fuel consum- ption and peak pressure of the film-space atomization method decrease about 12 g/Hp-Hr and 6 kg/cm2 respectively than ordinary model 6E150C with direct injection.The special points of film-space atomization type ( 7 chamber, the basic idea of mixing and combustion, and various influence factors of the film-space atomization are discussed here.更多还原