2차 공기 분사에 의한 스파크 점화 가솔린 엔진의 배기 Hydrocarbon 저감에 관한 실험적 연구

An Experimental Study for Reducing the Exhaust Hydrocarbon Emission at SI Engine Using Timed Secondary Air Injection

  • 발행 : 1999.09.01

초록

An experimental study for reducing the exhaust hydrocarbon emission at spark ignition engine using timed secondary air injection is carried out . In this study, secondary air injection timings and durations are controlled to decrease the hydrocarbon emission and to increase exhaust gas temperature at cold and warm-up engine conditions. The hydrocarbon reduction rate and exhaust gas temperature are compared between timed secondary air injection and continuous air injection. The optimum secondary air injection timing for reducing the hydrocarbon emission is at the exhaust valve open timing. At some engine conditions , the hydrocarbon emissions are decreased to 10% of engine raw values and exhaust gas temperatures increase by 20$0^{\circ}C$ with times secondary air injection . Timed secondary air injection has more hydrocarbon reduction rate that continuous secondary air injection except some engine conditions.

키워드

참고문헌

  1. SAE Paper 970264 Reduced Cold-Start Repid Exhaust Port Oxidation(REPO) in a Spark-Ignition Engine Michael E. Crane;Robert H. Thring;Daniel J. Podner
  2. SAE Paper 940464 New Technology for Reducing the Power Consumption of Electrically Heared Caralyst Takchisa Y.;Kouuji Y.
  3. SAE Paper 940468 Concept for Ultra Low Emissiom Vehicle Karl Kollmann;Wolfgang Zahn
  4. SAE Paper 970740 Exhaust Emission from the Passenger Cars During Engine Cold Start and Warm Piotr Bielaczyc;Jerzy Merkisz
  5. SAE Paper 940472 Secondary Air Injection with a New Development Electrical Blower for Reduced Exhaust Emission Karl Kollman;Wolfgang Zahn
  6. 한국자동차공학회지 1998년도 추계학술대회 2차 공기 공급을 이용한 배기저감기술의 실용성에 관한 연구 Ⅱ 손석건;김대중;이귀영
  7. 한국자동차 학회지 학술강연초록집 ULEV 대용 배기 THC 저감 기술에 관한 연구 김인탁;정충식;이정헌;심현성;서주원;윤금충