PROBLEM TO BE SOLVED: To provide a hydraulic hybrid vehicle which can omit a charge pump when a hydraulic power supply device is constituted of a swash-plate type axial piston pump, does not need special control, can improve the efficiency of a hydraulic circuit while securing responsiveness at a start of the swash-plate type axial piston pump, and can increase a fuel economy improvement effect, and a control method of the hydraulic hybrid vehicle.SOLUTION: An accumulator 21 is arranged which is connected to a main pump 20a of a swash-plate type axial piston pump 20 via a hydraulic circuit HL, and a branch passage 30 is formed which connects the accumulator 21 and a swash plate control valve 20d for controlling an angle of a swash plate 20c of the swash-plate type axial piston pump 20. By arranging a pressure reduction valve 31 at the branch passage 20, a working fluid of the accumulator 21 is made to flow into the swash plate control valve 20d via the pressure reduction valve 31.SELECTED DRAWING: Figure 1

    【課題】油圧動力供給装置を斜板式アキシャルピストンポンプで構成した場合に、チャージポンプを不要にできると共に、特別な制御を必要とせずに、斜板式アキシャルピストンポンプの始動時の応答性を確保しつつ、油圧回路の効率を向上でき、燃費改善効果を大きくすることができる油圧式ハイブリッド車両及び油圧式ハイブリッド車両の制御方法を提供する。【解決手段】斜板式アキシャルピストンポンプ20の主ポンプ20aに油圧回路HLを介して接続するアキュムレータ21を備えて、アキュムレータ21と、斜板式アキシャルピストンポンプ20の斜板20cの角度を制御する斜板制御弁20dとを接続する分岐通路30を設けるとともに、この分岐通路20に減圧弁31を設けて、アキュムレータ21の作動油を減圧弁31を経由して斜板制御弁20dに流入させる。【選択図】図1


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    Title :

    HYDRAULIC HYBRID VEHICLE AND CONTROL METHOD OF HYDRAULIC HYBRID VEHICLE


    Additional title:

    油圧式ハイブリッド車両及び油圧式ハイブリッド車両の制御方法


    Contributors:

    Publication date :

    2016-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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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