In the present study, a hydraulic shock absorber is proposed. Since the damper is mainly used in suspension energy recovery system, the damping characteristics of the damper under no-load state are studied in this paper. Structural design is conducted so that the unidirectional flow of the oil drives the hydraulic motor to generate electricity. Meanwhile, an asymmetrical extension/compression damping force is obtained. A mathematical model of the shock absorber is established, and the main characteristics of the inherent damping force are obtained. Based on the established model, effects of the accumulator volume, accumulator preinflation pressure, hydraulic motor displacement, check valve inner diameter, and spring stiffness, hydraulic line length and inner diameter on the indicator characteristics are analyzed. Moreover, a series of experiments are conducted on the designed damper to evaluate the characteristics of the inherent damping force and analyze the effect of the accumulator volume and preinflation pressure on the damping characteristics.

中文翻译：

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液压减振器的阻尼特性分析

在本研究中，提出了一种液压减震器。由于该阻尼器主要用于悬架能量回收系统，因此本文研究了该阻尼器在无负载状态下的阻尼特性。进行结构设计，使油的单向流动驱动液压马达发电。同时，获得不对称的拉伸/压缩阻尼力。建立了减震器的数学模型，并获得了固有阻尼力的主要特征。基于建立的模型，分析了蓄能器容积，蓄能器预充气压力，液压马达排量，止回阀内径以及弹簧刚度，液压管路长度和内径对指示器特性的影响。而且，