Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on Shape Optimization of Cooling Channel in Hollow Shaft for In-wheel Motor

대용량 인휠 모터용 중공축 냉각유로의 형상 최적화에 관한 연구

  • Lim, Dong Hyun (Green Car Power System R&D Division, Korea Automotive Technology Institute) ;
  • Kim, Dong-Hyun (Leading Edge Engineering Team, Hyundai Mobis) ;
  • Kim, Sung Chul (Green Car Power System R&D Division, Korea Automotive Technology Institute)
  • 임동현 (자동차부품연구원 그린카파워시스템연구본부) ;
  • 김동현 (현대모비스 선도기술연구팀) ;
  • 김성철 (자동차부품연구원 그린카파워시스템연구본부)
  • Received : 2013.03.11
  • Accepted : 2013.03.28
  • Published : 2013.11.01
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Abstract

For the proper cooling of in-wheel motor, the cooling channel should have the characteristics which are low pressure drop and adequate cooling oil supply to motor part. In this study, the flow performance of cooling channel for in-wheel motor was evaluated and the shape of the channel was optimized. First, the pressure drop and flow distribution characteristics of the initial channel model were evaluated using numerical analysis. Also, by the result of analysis and design modification, 4 design parameters of the channel were selected. Second, using the Taguchi optimal method, the cooling channel was optimized. In the method, nine models with different levels of the design parameters were generated and the flow characteristics of each models was estimated. Base on the result, the main effect of the design parameters was founded and optimized model was obtained. For the optimized model, the pressure drop and oil flow rate were about 0.196 bar and 0.207 L/min, respectively. The pressure drop decreased by about 0.3 bar and the oil flow rate to the motor part increased by about 0.2 L/min compared to the initial model.

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References

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