Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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Study for Failure Examples of Solenoid Valve, Relay and Idle Speed Control Actuator in Liquid Petroleum Gas vehicle Engines

LPG 자동차 엔진의 솔레노이드밸브, 릴레이, 공회전조절장치의 고장사례 연구

  • Kim, Chung-Kyun (Research Center for Tribology, Mechatronics and Energy Technology, Hongik University) ;
  • Lee, Il-Kwon (Department of Automotive Engineering, Daelim University College) ;
  • Cho, Seung-Hyun (Department of Mechanical Engineering, Dongyang Mirae University)
  • 김청균 (홍익대학교 트리보메카, 에너지기술 연구센터) ;
  • 이일권 (대림대학 자동차공학과) ;
  • 조승현 (동양미래대학 기계공학부)
  • Received : 2011.02.14
  • Accepted : 2011.06.24
  • Published : 2011.06.30
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Abstract

The purpose of this paper analyzes and studies to seek the failure examples of electronic control actuators for engine in liquified petroleum gas vehicle. The first, it was verified phenomenon for intial starting damage and no-acceleration of engine because of occasionally fuel feeding interception by clogged of emergency cutting solenoid valve filter. The second, the contact resistance produced in the connecting part of engine control relay because of no fully surface contacting by processes and assembly badness. It was displayed phenomenon of re-starting badness. The actuator that idle speed control system was sticked inside because of intake-air decreasing by carbon deposit. As a result, it was verified the phenomenon of disharmony that repeated up and down the engine revolution.

이 논문의 목적은 LPG 자동차의 전자제어에 대한 요소의 하나인 액추에이터에 대한 고장사례를 찾아 분석하고 연구하는 것이다. 차량의 연료를 저장하는 봄 내부의 LPG 긴급 차단 솔레노이드 밸브의 필터가 막혀 연료의 공급이 간헐적으로 차단되는 현상이 발생되어 엔진이 작동하는 동안 엔진의 초기시동불량이나 가속이 되지 않는 것을 확인하였다. 엔진 컨트럴 릴레이 부위의 접점부가 가공불량이나 조립불량에 의해 완전한 면접촉이 되지않아 접촉저항이 발생되어 초기 시동을 걸었을 때 시동이 걸렸으나 재시동을 걸 때 시동이 걸리지 않는 현상을 확인하였다. 공회전 조절장치의 내부에 카본이 퇴적되어 액추에이터가 고착되어 흡입공기의 공급이 감소되어 자동차의 시동이 걸려 공회전 상태일 때 엔진의 회전수가 규정 범위를 벗어나 상승과 하락을 반복하는 불안정 상태를 확인하였다.

Keywords

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