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운행차 부하검사를 통한 매연도 및 NOx 상관성 분석 연구
김종우(Jongwoo Kim),김승열(Sungyul Kim),김계현(Gaehyun Kim) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
The current in-use vehicle emission legislation of diesel vehicle in Korea regulate smoke emission only. In this reason, questionable expedients ways are used to reduce the smoke emission to meet the emission standard at the periodic technical inspection emission test site. Cause of trade-off relationship between smoke and NOx, if smoke is reduced by intentional modified the emission system of the test vehicle, Nox emission increase remarkably at the test diesel vehicle. This paper describes the correlations of smoke and NOx characteristics of diesel vehicle that was removed EGR valve and air cleaner intentional purpose during Kd-147 mode, in-use emission testing mode of light-duty diesel vehicle in Korea, Results from these tests show that Nox emission increase 430% higher in the case of removing egr valve whereas smoke is reduced 76% at the test vehicle.