一、引言采用常见燃烧法时,均匀混合气的排放物取决于燃料空气的比例。企图仅从发动机内部采取措施,使有害物中最主要成份的浓度降到最小值,这实际上是不可能的。从理论上来说,为了使发动机的工作过程尽量完善:则可断言采用很高空气过量系数可以降低各种排放物的浓度,也可以提高经济性。实现高空气过量系数燃烧的先决条件是,采用均匀稀薄的碳氢燃料和空气的混合气。 I. INTRODUCTION With common combustion methods, the emission of a homogeneous mixture depends on the proportion of fuel air. It is virtually impossible to attempt to only take measures from within the engine to minimize the concentration of the most dominant component of the pests. In theory, in order to make the work of the engine as perfect as possible, it can be asserted that using a high air excess coefficient can reduce the concentration of various emissions and also improve the economy. A prerequisite for achieving a high air excess coefficient combustion is the use of a uniform and lean mixture of hydrocarbon fuel and air.