Power-Following Control Strategy of a Wheel-Drive Hydraulic Hybrid Vehicle

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2020-03-15 DOI:10.5545/sv-jme.2019.6302

Tao Zhang, Qiang Wang, Xiaohui He, Li Sisheng, X. Shen

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引用次数: 5

Abstract

Energy management strategy is a critical technology for improving the fuel economy of wheel-drive hydraulic hybrid vehicles. For driving, a power-following control strategy is proposed in this study by adding several working points of the engine in the optimal fuel economy power curve. For braking, the “I” curve distribution strategy based on critical braking strength zmin was adopted. A test bench was constructed according to the quarter of the prototype vehicle. Taking the typical working conditions of Federal Urban Driving Schedule (FUDS) and the selfset extra-urban driving schedule (EUDC-1) cycle condition into consideration, the energy management strategy was studied. The torque and speed of the simulated engine and pressure of the accumulator were obtained. The test fuel consumption in this research was compared with the original fuel consumption of the prototype vehicle. It was found that the proposed energy management strategy could effectively improve the fuel economy by more than 24 % under the requirement of satisfying the dynamic performance of the whole vehicle.

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轮驱动液压混合动力汽车动力跟随控制策略

能量管理策略是提高轮驱液压混合动力汽车燃油经济性的关键技术。在驱动方面，通过在最优燃油经济性功率曲线中加入发动机的多个工作点，提出了一种功率跟随控制策略。制动采用基于临界制动强度zmin的“I”型曲线分配策略。根据原型车的四分之一构造了试验台。考虑联邦城市驾驶计划(FUDS)的典型工况和自定城市外驾驶计划(EUDC-1)循环工况，研究了能量管理策略。得到了模拟发动机的转矩、转速和蓄能器的压力。本研究的试验油耗与原型车的原始油耗进行了比较。结果表明，在满足整车动力性能要求的情况下，所提出的能量管理策略可有效提高燃油经济性24%以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Strojniski Vestnik-Journal of Mechanical Engineering 工程技术-工程：机械

CiteScore

3.00

自引率

17.60%

发文量

审稿时长

4.1 months

期刊介绍： The international journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.