Design and Performance of Electro-hydraulic Full Hydraulic Brake System for 8×8 All-electric Drive Off-road Vehicle

doi:10.3969/j.issn.1000-1093.2021.02.019

Abstract

Abstract: A principle and scheme of a electro-hydraulic full hydraulic brake system for 8×8 electric drive off-road vehicle is designed according to the performance index requirements of brake system for independent electric drive vehicle. In considering the influence of the system's long pipeline characteristics on the output braking performance, a test platform with the whole vehicle components and pipeline arrangement at ratio of 1∶1 was built, and the output characteristics of the whole hydraulic brake system under different working conditions were studied. The results show that the output braking force and braking response time of the new electro-hydraulic full hydraulic brake system meet the requirements of braking performance index (braking force of 12.0 MPa, and response time of 0.2 s-0.3 s); the braking output pressure is linearly related to the displacement and change rate of the brake pedal; when the electric control system fails, the whole hydraulic brake system can still meet the braking demand of the whole vehicle.

Key words: off-roadvehicle, brakesystem, electro-hydraulicbraking, fullhydraulicbraking, brakingperformance, experimentalverification

CLC Number:

TJ810.3⁺22

CHEN Jinshi， LIU Siyuan， WANG Tongjian， HUO Dongyang， ZHANG Meirong， ZHANG Fei. Design and Performance of Electro-hydraulic Full Hydraulic Brake System for 8×8 All-electric Drive Off-road Vehicle[J]. Acta Armamentarii, 2021, 42(2): 422-429.

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