【作者】

Xiang-yu Feng，Yun-shan Ge

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表。论文的版权归CIMAC所有。Number concentration and size distribution of exhaust particles from diesel engine and abnormal particle emission with particulate oxidation catalyst(POC)were investigated on the engine test bench through a two-stage dilution system and engine exhaust particle sizer(EEPS). EEPS was used to study the abnormal particle emission after POC on a steady state for 6.5h. The results indicate that, the average particle conversion efficiency of POC was 61%, POC has higher conversion efficiency for nucleation mode particle. In the long time observation, abnormal particle emission after POC happens seven times in the first hour, and the number concentration of these abnormal peaks is higher than normal state by up to two orders of magnitude, the accumulated number and mass concentration of 1 ∼ 5peaks are higher than the filtered particles by POC between every peaks, most of these particles of these peaks are from substrate surface before this test, particle number concentration after POC increases over time from second to sixth hour.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

1

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