乔虹，王彬

（江铃汽车股份有限公司 动力转动开发部, 江西 南昌 330030）

    摘要：在柴油机试验台架上开展了金属基POC载体的应用研究，并与陶瓷基载体进行了对比。试验结果表明：在载体的体积及目数、涂层性质相同时，金属基载体POC在ESC测试循环中的平均排气背压比陶瓷基高15%左右；在ESC及ETC排放试验中，二者的发动机气态污染物排放值相差不多，但金属基载体POC的颗粒排放比陶瓷基POC要低很多，金属POC是陶瓷POC的57%（ESC循环下）和66%（ETC循环下）；另外从最大颗粒物承载量来说，金属基POC是陶瓷基POC的1.5倍。

    关键词：柴油机；陶瓷基POC；金属基POC；颗粒物

Abstract: The experimental study on Metal -basedPOC carrier applied in light-duty diesel engine was carried out, and Ceramic -based POCcarrier was also introduced as a comparison. The results suggested that with the same volume and mesh,and same washcoat, the exhaust back-pressure of ceramic-based carrier in ESC cycle was lower than Metal-based, decreased by about 15%. The gaseous emissions were almost the same forMetal -based and Ceramic-basedcarrier in ETC and ESC cycles, but PM emissions of ceramic-based POC was 1.5(in ETC) times and 1.75 (in ESC) times higher than metal-based carriers.

Key words: Diesel Engine；Ceramic-based POC Carrier；Metal-based POC Carrier；PM