A Study on the Reliability Analysis of Al Oil Pressure Switch for Automobiles

Al 소재의 자동차용 Oil Pressure Switch의 신뢰도 분석에 관한 연구

  • Cho, Myung-Ho (Department of Safety Engineering, Hoseo University) ;
  • Kim, Tae-Hun (Department of Safety Engineering, Hoseo University) ;
  • Rhie, Kwang-Won (Department of Safety and Health Engineering, Hoseo University)
  • Published : 2009.12.31


The oil pressure switch(OPS) for automobile is very important part to prevent an overheated engine and other problems by checking the operation of an engine oil system and displaying oil signs on a dashboard. OPS is the part that receives various stress caused by temperature, vibration, and corrosion in an engine room. Regarding existing steel OPS cases, there occur field errors due to the rust, and much concern comes from the low anticorrosion caused by CR6+ Free according to the restrictions of heavy metals. Therefore, the study analyzed average life, the failure rate, and reliability through the tests of performance according to temperature changes, mechanical strength, and run-test in order to confirm if the use of the oil pressure switch with Al of anti-corrosion can improves the reliability, instead of the existing steel products.


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