Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Effect of the Power Steering System Driving Torque on Vehicle Fuel Economy in a Passenger Car

Power Steering System의 구동력이 차량 모드주행연비에 미치는 영향

  • Kim Namkyun (Renault Samsung Motors) ;
  • Han Changho (GM Daewo Auto & Technology) ;
  • Kim Wooseok (Commercial Vehicle Test Research Team, Hyundai Motor Co.,) ;
  • Lee Jonghwa (School of Mechanical Engineering, Ajou University) ;
  • Park Jinil (School of Mechanical Engineering, Ajou University) ;
  • Park Kyungseok (School of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김남균 (르노삼성자동차 기술연구소) ;
  • 한창호 (지엠대우 오토앤터크놀로지 기술연구소) ;
  • 김우석 (현대기아 기술개발본부) ;
  • 이종화 (아주대학교 기계공학부) ;
  • 박진일 (아주대학교 기계공학부) ;
  • 박경석 (금오공과대학교 기계공학부)
  • Published : 2006.01.01
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Abstract

To improve the vehicle fuel economy, various technologies have been studied. Meanwhile it deteriorates fuel economy that the increased driving torque for Power Steering System (PSS) due to weighted vehicle and widened tire for low speed driving and parking. So the larger driving torque for PSS is, the lower fuel economy is. Therefore, the study about the effect of the driving torque for PSS and the engine total friction must be preceded to improve the vehicle fuel economy. In this study, a PSS module separated from the vehicle is used to measure the driving torque for PSS with respect to the pressure of PSS. The result shows that the driving torque for PSS was in direct proportion to the pressure of PSS 3 (N-m) driving torque for PSS vs. 10 (bar) pressure of PSS, and 8 (N-m) vs. 40 (bar). In addition, the driving torque and pressure for PSS was measured according to the engine speed in the component test condition which was in the vehicle condition. Measuring the driving torque for PSP in the vehicle condition was established by using the VeFAS which was a fuel economy analyzer developed in our lab and installing PSS By-pass line. The effect of the driving torque for PSS on the vehicle fuel economy was analyzed with FTP-75 cold start mode.

Keywords

References

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