Title: Editing road load spectrum of hybrid transmission system under comprehensive driving cycles

Authors: Junwei Zhao; Yanfang Liu; Xiangyang Xu; Peng Dong; Shuhan Wang; Jing Ma; Shutao Yao; Xiaoyu Li

Addresses: School of Transportation Science and Engineering, Beihang University, Beijing, China ' School of Transportation Science and Engineering, Beihang University, Beijing, China ' School of Transportation Science and Engineering, Beihang University, Beijing, China ' School of Transportation Science and Engineering, Beihang University, Beijing, China ' School of Transportation Science and Engineering, Beihang University, Beijing, China ' Harbin DongAn Automotive Engine Manufacturing Co., Ltd., Heilongjiang, China ' Harbin DongAn Automotive Engine Manufacturing Co., Ltd., Heilongjiang, China ' Harbin DongAn Automotive Engine Manufacturing Co., Ltd., Heilongjiang, China

Abstract: In order to effectively obtain the loading condition of the bench test of the hybrid transmission system (HTS) and provide load input for fatigue damage analysis of components, the structural model of the HTS was constructed to obtain the wheel end torque corresponding to different working modes under 13 different driving cycles. By eliminating invalid data, counting cyclic load frequency by rain-flow counting method, and extrapolating rain-flow matrix, the strengthened load spectrum corresponding to different working modes was obtained. According to the eight-level classification method, the continuous amplitude distribution was equivalent to the constant load. The final loading time was 185.98 h, which provided a benchmark load spectrum for the subsequent fatigue damage study of HTS components.

Keywords: hybrid transmission system; HTS; load spectrum; rain-flow counting; bench test.

DOI: 10.1504/IJPT.2022.127866

International Journal of Powertrains, 2022 Vol.11 No.4, pp.329 - 343

Received: 09 Sep 2021
Received in revised form: 28 Dec 2021
Accepted: 15 Apr 2022
Published online: 20 Dec 2022 *

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