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승용자동차 전자제어 에어컨 장치의 다이오드, 써모센서와 배선단락에 대한 고장사례 고찰

A Study for Faliure Examples Involved Diode, Thermo Sensor and Wiring Short of Electronic Control A/C System in a Vehicle

  • Lee, IL Kwon (Department of Automotive Engineering, Daelim University College) ;
  • Kook, Chang Ho (Department of Automotive Engineering, Daelim University College) ;
  • Ham, Sung Hoon (Department of Automotive Engineering, Daelim University College) ;
  • Lee, Jeong Ho (Department of Automotive Engineering, Daelim University College) ;
  • Moon, Hak Hoon (Department of Automotive Engineering, Osan University) ;
  • You, Chang Bae (Department of Automotive Engineering, Shin Sung University) ;
  • Hwang, Han Sub (Department of Mechanical Engineering, Suwon Science College) ;
  • Lim, Chun Moo (Seoul Institute of Technology &Education) ;
  • Jung, Dong Hwa (Department of Machinery and Automotive Engineering, Suncheon Jeil College) ;
  • Na, Yun Whan (Samsung Electronics Co. Ltd.)
  • 투고 : 2017.09.15
  • 심사 : 2017.10.20
  • 발행 : 2017.10.30

초록

이 논문은 자동차의 전자제어 에어컨에서 발생하는 고장사례에 대한 논문이다. 첫 번째 사례에서, 원인은 에어컨 릴레이 내부에 서지 전압 역류 방지용으로 사용된 다이오드가 에어컨이 OFF 되었을 때 다이오드의 단락으로 인해, 서지 전압을 흡수하지 못해 퓨즈가 반복적으로 끊어진 것을 확인하였다. 두 번째 사례에서, 원인은 핀 써모센서 내부의 단선으로 인해 에어컨을 제어하지 못함으로써 이베퍼레이터의 동결현상이 발생한 것을 확인하였다. 세 번째 사례에서, 원인은 운전석 앞쪽의 크래쉬 패드 하단에 있는 와이어링의 에어컨 핀센서 핀과 연결되는 배선이 차체와의 간섭으로 인해, 피복이 벗져져 단락(short)현상에 의해 에어컨 스위치와 핀센서가 소손되어 에어컨이 작동하지 않는 것을 확인하였다. 따라서, 이러한 고장 현상을 철저하게 확인하고 개선하여 최적의 시스템을 유지할 수 있도록 하여야 한다.

The purpose of this paper is to study for a failure examples producing in electronic control air conditioner in vehicle. The first example, it looked for the repetitive fuse cutting phenomenon that the diode using for a surge voltage prevention of inner A/C relay damaged because of no absorbing the surge voltage by short of diode when the A/C is off. The second example, it knew the icing phenomenon of evaporator that the A/C ECU didn't control the A/C because of inner cutting of fin thermo sensor. The third example, it verified the operation trouble phenomenon because of the A/C switch and for sensor burned in flames by short phenom enon when the sheath of the cable has peeled off. Therefore, the driver have to manage the optimism system of a car by thoroughgoing inspection and improvement the failure phenomenon.

키워드

참고문헌

  1. Warren Bessler and Frank Forbes, "Electrically Driven Automotive Air Conditioner", SAE paper 870035
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