所谓稀薄燃烧,可以分为均质与非均质两种。分层充气发动机作为稀薄燃烧中的非均质燃烧,是稀薄燃烧的主要方式。它在内燃机问世之初便已有人作过设想,Harry Ricardo在1915年就曾搞过这方面的工作,当时只是为了节油。近十年来由于排气污染及节约能源,而又重新为人们所注意。就排气污染而言,现今采用的热反应器和催化反应器存在着热疲劳与机械应力疲劳以及催化剂铅中毒等问题,不能令人满意。如果燃料在燃烧室内能有效充分地 The so-called lean burn, can be divided into two kinds of homogeneous and heterogeneous. As a non-homogeneous combustion of lean combustion, stratified charge engine is the main way of lean combustion. It had already been conceived at the very beginning of the internal combustion engine, and Harry Ricardo had done that job in 1915 when it was just to save fuel. In the past decade, due to exhaust pollution and energy conservation, but again for people’s attention. In terms of exhaust pollution, thermal and catalytic reactors used today are subject to thermal fatigue and mechanical stress fatigue as well as lead poisoning of catalysts, which are not satisfactory. If the fuel in the combustion chamber can be effective enough