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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/>
기능성 유기 초박막을 이용한 NO2 가스센서 개발을 위한 기초 연구
손병청,임병오,김용인,손태원,신동명,주재백,정귀영,김영관,강우형,이병호 ( B . C . Sohn,B . O . Rim,Y . I . Kim,T . W . Sohn,D . M . Shin,J . B . Ju,G . Y . Chung,Y . K . Kim,W . H . Kang,B . H . Lee ) 한국유화학회 1995 한국응용과학기술학회지 Vol.12 No.1
Ultra thin films of Tetra-3-hexadecylsulphamoylcopperphthalocyanine(HDSM-CuPc) were formed on various substrates by Langmuir-Blodgett method, where HDSM-CuPc was synthesized by attaching long-chain alkylamine(hexa-decylamine) to CuPc. The reaction product was identified with FT-IR, UV-visible absorption spectroscopies, elemental analysis and thin layer chromatography. The formation of Ultrathin Langmuir-Blodgett(LB) films of HDSM-CuPc was confirmed by FT-IR and UV-visible spectroscopies. A quartz piezoelectric crystal coated with LB films of HDSM-CuPc was examined as a gas sensor for NO_2 gas. HDSM-CuPc LB films were transferred to a quartz crystal microbalance(QCM) in the form of Z-type multilayers. Response characteristics of film-coated QCM to NO_2 gas concentrations over a range of 100~600ppm have been tested with a thickness of 5~20 layers of HDSM-CuPc. Changes in frequency by the response time was slow.