PROBLEM TO BE SOLVED: To prevent overload of an engine during warming-up by charging a capacitor and enable simultaneous warming-up of the capacitor and hydraulic fluid.SOLUTION: A capacitor 4 is warmed up by a power generating operation (charging of the capacitor) and an assist operation (discharge of the capacitor) of a generator motor 2 of a hybrid construction machine. A hydraulic fluid is warmed up by controlling horsepower of a hydraulic pump 5 while applying hydraulic load by a relief valve 10. The horsepower of the hydraulic pump 5 is controlled by subtracting a charge power during warming-up, which is a load due to the power generating operation of the generator motor 2, from a pump horsepower during warming-up so as to prevent engine overload during warming-up by the power generating operation.SELECTED DRAWING: Figure 1

    【課題】蓄電器と作動油の同時暖機を可能としながら、蓄電器の充電による暖機時のエンジンの過負荷を防止する。【解決手段】ハイブリッド建設機械において、発電電動機2の発電運転(蓄電器の充電)及びアシスト運転(蓄電器の放電)によって蓄電器4を暖機するとともに、リリーフ弁10により油圧負荷をかけながら油圧ポンプ5の馬力制御を行うことによって作動油を暖機する。上記発電運転による暖機時に、エンジン過負荷とならないように、発電電動機2の発電運転による負荷分である暖機時充電電力を暖機時ポンプ馬力から減算して油圧ポンプ5の馬力制御を行うようにした。【選択図】図1


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    Title :

    HYBRID CONSTRUCTION MACHINE


    Additional title:

    ハイブリッド建設機械


    Contributors:

    Publication date :

    2016-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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