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Simulation-Based Comparative Assessment of a Multi-Speed Transmission for an E-Retrofitted Heavy-Duty Truck

Author

Listed:
  • Milla Vehviläinen

    (VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland)

  • Pekka Rahkola

    (VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland)

  • Janne Keränen

    (VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland)

  • Jenni Pippuri-Mäkeläinen

    (VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland)

  • Marko Paakkinen

    (VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo, Finland)

  • Jukka Pellinen

    (Independent Researcher, FI-33100 Tampere, Finland)

  • Kari Tammi

    (Department of Mechanical Engineering, Aalto University, FI-02150 Espoo, Finland)

  • Anouar Belahcen

    (Department of Electrical Engineering and Automation, Aalto University, FI-02150 Espoo, Finland)

Abstract

Electric retrofitting (e-retrofitting) is a viable option for accelerating the renewal of heavy-duty vehicle fleets to reduce the related emissions. We introduce a simulation-based assessment of e-retrofitting strategies for heavy-duty vehicles. Our simulation tool, an electric vehicle fleet simulation toolbox, comprises three modules, namely driving cycles, vehicle dynamics, and vehicle profiles. The first allows for the creation of realistic driving cycles based on GPS data from real routes. The vehicle dynamics and vehicle profiles incorporate, e.g., the modelling of the powertrain and driving conditions. Ten realistic driving cycles were created and used for investigating and comparing three different powertrain alternatives, including the original diesel powertrain, electric with a single-speed transmission and electric with a multi-speed transmission. The vehicles were simulated in two different heavy-load scenarios. First, driving with a cargo load represented by the maximum vehicle weight and second, driving with snow ploughing. We found that the multi-speed transmission in an electric heavy-duty truck significantly improved its traction performance and gradeability. On the other hand, the effect on the electric powertrain efficiency, and thereby on the energy consumption, remained rather minor. Considering the given workload scenarios, our results advocate employing rather than omitting the gearbox in the e-retrofit truck process.

Suggested Citation

  • Milla Vehviläinen & Pekka Rahkola & Janne Keränen & Jenni Pippuri-Mäkeläinen & Marko Paakkinen & Jukka Pellinen & Kari Tammi & Anouar Belahcen, 2022. "Simulation-Based Comparative Assessment of a Multi-Speed Transmission for an E-Retrofitted Heavy-Duty Truck," Energies, MDPI, vol. 15(7), pages 1-29, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2407-:d:779208
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    References listed on IDEAS

    as
    1. Senqi Tan & Jue Yang & Xinxin Zhao & Tingting Hai & Wenming Zhang, 2018. "Gear Ratio Optimization of a Multi-Speed Transmission for Electric Dump Truck Operating on the Structure Route," Energies, MDPI, vol. 11(6), pages 1-17, May.
    2. Antti Ritari & Jari Vepsäläinen & Klaus Kivekäs & Kari Tammi & Heikki Laitinen, 2020. "Energy Consumption and Lifecycle Cost Analysis of Electric City Buses with Multispeed Gearboxes," Energies, MDPI, vol. 13(8), pages 1-21, April.
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