The invention discloses a hydraulic hybrid power vehicle and a hydraulic hybrid power system thereof. The output shaft of an engine in the hydraulic hybrid power system is directly connected with an input shaft of a first transmission gear set, the first output shaft of the first transmission gear set is connected/disconnected with a first input end of a second transmission gear set through a clutch; a second output shaft of the first transmission gear set is connected with a driving shaft of a hydraulic pump, a hydraulic oil outlet of the hydraulic pump is connected/disconnected with a hydraulic pump/a motor through a direction control valve, and an output shaft of the hydraulic pump/the motor is connected with a second input shaft of the second transmission gear set; an output shaft of the second transmission gear set is connected with a drive axle of the hydraulic hybrid power vehicle; an outlet main oil path of the hydraulic pump is connected/disconnected with an oil inlet and an oil outlet of the hydraulic pump/the motor; an operating oil way of a high pressure energy accumulator is connected/disconnected with a main oil way through a switch valve so that hydraulic oil in the main oil path flows into the high pressure energy accumulator or the hydraulic oil in the high pressure energy accumulator flows into the main oil way. The power system is higher in reliability and higher in energy recovery ratio.


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    Title :

    Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof


    Contributors:
    LIU LIN (author) / LIU XIAOHUI (author) / LI CHAO (author) / HAN YONGQING (author)

    Publication date :

    2015-08-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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