PROBLEM TO BE SOLVED: To provide a drive system of a hydraulic pump which can reduce consumption power.SOLUTION: A hydraulic pump drive system in which an electric motor is controlled by a control device 30, and a rotary shaft of a hydraulic pump is rotationally driven thereby assisting an engine. The control device 30 is so configured that an engine torque command is calculated by a torque command calculation part 33 on the basis of a deviation of rotational speed calculated by a rotational speed difference calculation part 32, and further, an actual fuel injection quantity is calculated by a fuel injection quantity calculation part 34 on the basis of an engine torque command. In addition, assist torque is decided by an assist torque decision part 36, and a torque reduction coefficient is estimated by a torque change estimation part 37. In an assist determination part 44, a value of an assist torque command is decided to be zero or a value according to the assist torque on the basis of the torque reduction coefficient. A drive control part 40 controls action of the electric motor according to the assist torque command.SELECTED DRAWING: Figure 2

    【課題】消費電力を低減することができる液圧ポンプの駆動システムを提供する。【解決手段】油圧ポンプ駆動システムは、制御装置30によって電動機を制御して油圧ポンプの回転軸を回転駆動してエンジンをアシストするようになっている。制御装置30は、回転数差演算部32で演算される回転数偏差に基づいてトルク指令演算部33でエンジントルク指令を演算し、更に燃料噴射量演算部34でエンジントルク指令に基づいて実燃料噴射量を演算する。また、アシストトルク決定部36でアシストトルクを決定すると共にトルク変化推定部37でトルク低下係数を推定する。アシスト判定部44では、トルク低下係数に基づいてアシストトルク指令の値をゼロかアシストトルクに応じたトルクかに決定し、駆動制御部40がアシストトルク指令に応じて電動機の動きを制御する。【選択図】図2


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    Titel :

    DRIVE SYSTEM OF HYDRAULIC PUMP


    Weitere Titelangaben:

    液圧ポンプの駆動システム


    Beteiligte:
    MATSUSHIMA HIROHIDE (Autor:in) / OKASHIRO TAKASHI (Autor:in) / MURAOKA HIDEYASU (Autor:in) / YUMITATSU YOJI (Autor:in) / IWABE KAZUYA (Autor:in)

    Erscheinungsdatum :

    2016-04-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    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 / 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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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