Abstract
The traditional control method of hydraulic retarder has poor control effect, and a precise control method of hydraulic retarder for heavy vehicle running downhill is proposed in this paper. The dynamics of heavy vehicle is analysed. According to the analysis, the auxiliary braking performance of hydraulic retarder is studied. The hydraulic retarder assembly with closed structure is designed. On this basis, the preliminary control and secondary control of the hydraulic retarder are carried out to realize its precise control. Experimental results show that the dynamic deviation of the retarder speed controlled by the proposed method is 45% lower than that of the traditional method. The proposed method has low energy consumption and strong feasibility.
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