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Driving Characteristics Analysis Method Based on Real-World Driving Data

Author

Listed:
  • Sangho Lee

    (Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea)

  • Injae Eom

    (Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea)

  • Beomho Lee

    (Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea)

  • Janghyeok Won

    (Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea)

Abstract

All vehicles available for sale undergo certification tests mandated by law, and their certified fuel efficiency from these tests is indicated and disclosed. However, to address discrepancies between the certified fuel efficiency and actual driving conditions, more sophisticated certified modes, post-certification systems, and real-world driving tests have been introduced to complement the fuel efficiency certification system. The incorporation of a real-world driving mode, similar to certification modes, in vehicle research and development is of paramount importance from a directional perspective. To achieve this, various methods of configuring real-world driving modes have been proposed and applied in research. However, the validation of the correlation between fuel efficiency in real-world driving modes and certified driving modes is relatively limited. This study aimed to construct real-road driving cycles that are similar to the federal test procedure (FTP-75) and highway fuel economy test (HWFET) certification modes to determine the differences between the driving characteristics of the certification modes and real-road driving. The present study employed the commonly used relative positive acceleration analysis method along with a segmented short-trip technique for analysis. Additionally, variables such as fuel consumption and driving time were utilized to diversify our analytical methods. Test Routes A and B were configured for comparison with the fuel efficiency certification mode. An analysis of the relative positive acceleration (RPA) in both the test routes and certification mode confirmed that Test Route B, reflecting the actual driving patterns, closely follows the RPA distribution of the certification mode. Additionally, the fuel consumption for each short trip on each route was graphically represented, addressing aspects where determining the driving characteristics based solely on the RPA, such as the road grade, was difficult.

Suggested Citation

  • Sangho Lee & Injae Eom & Beomho Lee & Janghyeok Won, 2023. "Driving Characteristics Analysis Method Based on Real-World Driving Data," Energies, MDPI, vol. 17(1), pages 1-11, December.
    • Handle: RePEc:gam:jeners:v:17:y:2023:i:1:p:185-:d:1309625
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    References listed on IDEAS

    as
    1. Marz, Waldemar & Goetzke, Frank, 2022. "CAFE in the city β€” A spatial analysis of fuel economy standards," Journal of Environmental Economics and Management, Elsevier, vol. 115(C).
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