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2차공기 공급을 이용한 배기 저감 기술의 실용성에 관한 연구 Ⅱ
손건석(G.S.Son),고성혁(S.H.Ko),이귀영(K.Y.Lee),최의락(E.R.Choi),김영웅(Y.W.Kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
One of the promising technologies for LEV program secondary air injection system has been studied widely. In this paper feasibility test of secondary air injection system for LEV program and a comparison of its efficiency with that of a passive A/F control system were done using the FTP75 test on a 2.0 DOHC A/T vehicle. The engine out and tai lpipe emissions were recorded by the second with the temperatures of exhaust gas and the warm up converter. The temperatures were measured at manifold, inlet and the center of the warm up converter. The vehicle had a 0.67L Pd-only warm up converter and a 1.8L underbody converter which were 50k aged on MAD for the aftertreatment system and a ECU of LEV level. The ULEV regulation was sat isfied through a secondary air inject ion system. But the ULEV regulation was also satisfied with the lean A/F control during the first 40 sec after cold start. This study showed the lean A/F control strategy could be one of the potent ial technologies to meet LEV/ULEV regulations without any other additional active system.<br/>
2차공기 공급을 이용한 배기 저감 기술의 실용성에 관한 연구 Ⅰ
손건석(G.S.Son),김대중(D.J.Kim),이귀영(K.Y.Lee),최의락(E.R.Choi),김영웅(Y.W.Kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
In this paper feasibility test of secondary air injection system for LEV program were done using the FTP75 test on a 2.0 DOHC A/T vehicle. The engine out and tai lpipe emissions were recorded by the second wi th the temperatures of exhaust gas and the warm up converter. The temperatures were measured at manifold, inlet and the center of the warm up converter. The vehicle had a 0.67L Pd-only warm up converter and a 1.8L underbody converter which were 50k aged on engine bench for the aftertreatment system and a ECU of TLEV level. The amount and the duration of secondary air injection were determined with the converter svstem and the ECU.<br/>