금속필터에 의한 디젤엔진 입자상물질의 저감에 관한 연구

An Experimental Study on PM Reduction Using Metal DPF in a Diesel Engine

After-treatment apparatus ceramic DPF(diesel particulate filter) has been applied to reduce harmful particulate matters(PM) among the emissions from diesel engines so far, but it is easy to be fragile and weak in thermal shock. This research aims to investigate a metal type filter which is superior in mechanical strength and heat conduction rate and is beneficial economically in manufacturing. Basic performance of metal DPF such as loading test, temperature gradient test, thermal shock test, heat resistant test and back pressure was carried out. And the experimental results provided key informations in designing and manufacturing such as detailed structures of metal mesh filter. Also the vehicle with engine volume of 2,957cc was tested under lug-down 3 mode and CVS-75 mode. PM reduction efficiency was 54.5% using metal DPF without loss of performance and fuel consumption.