엔진(1)의 요구 동력을 발생 가능한 엔진 회전수 및 엔진 토크의 조합을 복수 산출하고, 당해 각 조합에 있어서의 시스템 효율을 유압 펌프(3)의 토출압에 따라 산출하는 시스템 동작점 연산부(28)와, 시스템 동작점 연산부에 의해 산출된 엔진 회전수, 엔진 토크 및 시스템 효율을 포함하는 복수의 조합 중에서 원하는 시스템 효율이 포함되는 것에 있어서의 엔진 회전수를 엔진의 목표 회전수로서 산출하는 회전수 연산부(33)와, 회전수 연산부에 의해 산출된 목표 회전수와 유압 펌프의 요구 유량에 기초하여, 유압 펌프의 목표 용량을 산출하는 용량 연산부(29)를 구비한다. 이에 의해, 시스템 전체의 효율이 양호한 동작점에서 엔진 및 유압 펌프를 제어할 수 있다.

    In a control device for construction machinery, a system operating point calculation unit calculates a plurality of combinations of engine rotational speed and engine torque with which demanded power of an engine can be generated; and calculates system efficiency in each of the combinations according to discharge pressure of a hydraulic. A rotational speed calculation unit calculates target rotational speed of the engine as the engine rotational speed in one of the combinations of the engine rotational speed, the engine torque and the system efficiency calculated by the system operating point calculation unit that includes desired system efficiency. A displacement calculation unit calculates target displacement of the hydraulic pump based on the target rotational speed calculated by the rotational speed calculation unit and demanded flow rate of the hydraulic pump. With this control device, the engine and the hydraulic pump can be controlled at an efficient operating point.


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    Titel :

    DEVICE FOR CONTROLLING CONSTRUCTION MACHINERY


    Weitere Titelangaben:

    건설 기계의 제어 장치


    Erscheinungsdatum :

    29.07.2019


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS



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