International Journal of Precision Engineering and Manufacturing

  • 제5권2호
  • /
  • Pages.46-52
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  • 2004
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  • 2234-7593(pISSN)
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  • 2005-4602(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

Electrical Impedance Change due to Contamination at the Contact Interface of Connectors for Automobile Crank Shaft Position Sensor

  • Kim, Young-Tae (Graduate School of Mechanical Engineering, Yonsei University) ;
  • Sung, In-Ha (Graduate School of Mechanical Engineering, Yonsei University) ;
  • Kim, Dae-Eun (School of Mechanical Engineering, Yonsei University)
  • 발행 : 2004.04.01
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초록

Numerous connectors are used in automobiles for transmission of electrical signals across various electro-mechanical components. The connectors must operate with high reliability in order to minimize failures due to signal degradation. In this work, the effects of contamination at the contact interface of connectors used fur automobile crankshaft position sensor on the impedance change were investigated. An experimental set-up was built to simulate the electrical signal transmitted from the sensor to the engine control unit through a connector. Output from the connector was investigated using connectors contaminated with engine block residues and water droplets. It was found that slight contamination of the connectors could lead to significant signal degradation which can lead to engine failure. Also, the effect of water in the connector altered the signal severely. However, the signal gradually regained the original state as the water evaporated from the interface.

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