本文探索了用缸内催化燃烧降低柴油机的排烟。为使催化剂能和燃料与空气同时接触,用“M过程”球形燃烧室柴油机进行试验。催化剂镀在活塞凹坑表面。试验结果表明:最有利燃油喷射方向有变化,为让更多的燃料喷到燃烧室壁面上;最佳喷油提前角推迟了;排烟有所下降。催化镀层的寿命有待进一步试验。 This paper explores the use of catalytic combustion in the cylinder to reduce diesel exhaust. In order to enable the catalyst to be in contact with the fuel and the air simultaneously, a “M process” spherical combustion chamber diesel engine was used for the test. The catalyst is plated on the surface of the piston pit. The test results show that: the most favorable fuel injection direction changes, in order to allow more fuel sprayed to the combustion chamber wall; the best fuel injection advance angle delayed; exhaust smoke decreased. The life of the catalytic coating needs further testing.