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이중성(J.S. Lee),김봉규(B.G. Kim),채정민(J.M. Chea),한정옥(J.O. Han),나평철(P.C. Na) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The government have been tightening EM regulation gradually but the effect is not good because of rapid increase of vehicles. And medium & heavy duty diesel vehicles, even though the number is small, exhaust very large pollutants(about over 50%). Especially it is more severe about old trucks and buses. Accordingly, CNG vehicle and the retrofit of diesel to CNG must be an alternative in order to protect the atmospheric environment and improve the air quality in the metropolitan area. The main object of this study is to secure the retrofit technology of diesel to CNG vehicle and the management system of CNG engine. we passed the government emission certification test. In addition to this, the mass production for retrofit is also studied. Results of emission and durability test for certification are as follows; there was no problem during 30,000㎞ vehicle durability test and good emission levels satisfying the regulation.