Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Sensitivity Analysis on Driving Characteristics According to Change in Gear Ratio of a Front Wheel Drive Electric Vehicle

전륜구동 전기자동차의 기어비 변경에 따른 구동 특징 민감도 분석

  • Son, Young-Kap (Department of Mechanical & Automotive Engineering, Andong National UNIV.) ;
  • Kim, Jeong-Min (Department of Mechanical & Automotive Engineering, Andong National UNIV.)
  • 손영갑 (국립안동대학교 기계자동차공학과) ;
  • 김정민 (국립안동대학교 기계자동차공학과)
  • Received : 2022.07.12
  • Accepted : 2022.08.12
  • Published : 2022.09.30
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Abstract

Acceleration performance, maximum velocity, urban driving energy consumption, and high-way driving energy consumption are important characteristics of electric vehicle driving. This study analyzes the effect of a gear ratio on these characteristics for a front wheel drive electric vehicle. The normalized sensitivity metric is used to compare the sensitivity of these scaled characteristics to the changes in the gear ratio. The sensitivity analysis results show that the normalized values are 0.95 for maximum velocity, 0.91 for acceleration performance, 0.51 for urban driving energy consumption, and 0.24 for high-way driving energy consumption. Therefore, the maximum velocity was affected the most by the changes in the gear ratio. These results can be used to determine the gear ratio of a front wheel drive electric vehicle to optimize the driving characteristics simultaneously.

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References

  1. Kim, M. H., Qin, Z., Lee, K. H., Zhang, Q. and Lyu, S. K., "A Study on the Design of Rear Wheel Drive Reducer for Electric Vehicle," Journal of the Korean Society for Precision Engineering, Vol. 35, No. 6, pp. 571-577, 2018. https://doi.org/10.7736/KSPE.2018.35.6.571
  2. Choi, J. H, Suh, J. H. and Park, N. G., "Optimal Design of Lightweight Two-Speed Transmission of Electric Vehicles," Tribology and Lubricants, Vol. 36, No. 2, pp. 96-104, 2020. https://doi.org/10.9725/KTS.2020.36.2.96
  3. Park, S. S. and Sun, Y. T., "Improvement Efficiency and Noise by Applying Chain System to Reducer of EV," Transactions of the Korean Society Automotive Engineers, Vol. 30, No. 2, pp. 99-104, 2022. https://doi.org/10.7467/KSAE.2022.30.2.099
  4. Ham, D. Y., Kim, Y. T. and Hahn, C. S., "A Study on The Fuel Economy and Efficiency Analysis Method according to Gear Ratio of Electric Vehicle Driving Motor," KSAE Spring Conference Proceedings, pp. 1168-1168, 2017.
  5. Kim, J. M., "Design of 2-Speed Transmission Ratios for the High Performance Rear Wheel Drive Electric Vehicle Considering Driving Characteristics," Transactions of the Korean Society Automotive Engineers, Vol. 30, No. 5, pp. 349-356, 2022. https://doi.org/10.7467/KSAE.2022.30.5.349
  6. Kim, J. M., "Analysis of Acceleration Performance Improvement for Electric Vehicle Using 2-Speed Transmission," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 21, No. 4, pp. 84-90, 2022. https://doi.org/10.14775/ksmpe.2022.21.04.084
  7. Kim, J. M., "Comparative Study of Powertrain Loss and Efficiency for the Electric Vehicle and Internal Combustion Engine Vehicle", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 18, No. 7, pp. 29-35, 2019.