A method of reducing fuel consumption in a machine with an internal combustion engine. The machine has a hybrid mode in which the engine is used for simultaneous ground propulsion via a torque convertor and hydraulic implement propulsion via a hydraulic pump. The engine controller uses a first engine map that defines primary operating constraints. The method comprises: obtaining an initial torque limit from a torque limit profile providing operating constraints that fall within the primary operating constraints. The method further comprises: implementing a torque limit that corresponds to the initial torque limit value such that in an event that a torque demand exceeds the torque limit then the engine speed will drop below the desired engine speed. The method further comprises, in an event that torque converter speed ratio between engine and ground propulsion drops below a speed ratio threshold, removing the torque limit profile and reverting to primary operating constraints.


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    Title :

    METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE


    Additional title:

    VERFAHREN ZUR REDUZIERUNG DES KRAFTSTOFFVERBRAUCHS IN LADERN, BAGGERN, TIEFLÖFFELBAGGERN UND DERGLEICHEN
    PROCÉDÉ DE RÉDUCTION DE LA CONSOMMATION DE CARBURANT DES CHARGEUSES, EXCAVATRICES, CHARGEUSES RÉTROCAVEUSES ET AUTRES


    Contributors:

    Publication date :

    2023-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    E02F Baggern , DREDGING / 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



    Method of reducing fuel consumption in loaders, excavators, backhoe loaders and the like

    ROBERT NICHOLAS HARPER | European Patent Office | 2022

    Free access

    METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE

    HARPER ROBERT NICHOLAS | European Patent Office | 2021

    Free access