XB1E45F汽油机的排放控制

Emission Control of Gasoline Engine XBIE45F

分析了汽油机为满足美国EPA排放标准而进行的机内和机外的改进措施，主要介绍了通过对整机的化油器主要参数和点火提前角进行改进设计，并在消音器中增加三效催化转化器，以及提高燃油品质来降低汽油机工作过程中排出的CO、HC和NOx的排放量。

This article analyses some approaches in and out of gasoline engine to meet American EPA（Environmental Protection Agency） emission standards, then introduces several methods to reduce emission amount of CO,HC and NOx from engine working process, including improving the main parameters of carburetor, optimizing the ignition advance angle, adding three-way catalytic converter in the silencer, enhancing the fuel quality and so on.