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A platform for research: civil engineering, architecture and urbanism
METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE
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.
METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE
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.
METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE
HARPER ROBERT NICHOLAS (author)
2021-01-28
Patent
Electronic Resource
English
METHOD OF REDUCING FUEL CONSUMPTION IN LOADERS, EXCAVATORS, BACKHOE LOADERS AND THE LIKE
| European Patent Office | 2023
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