A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ERNGY MANAGMENT SYSTEMS FOR GROUND VEHICLES
An energy management system (11) for a ground vehicle comprises an internal combustion engine (10) for providing a primary rotational energy via an engine shaft (56), a motor or electric machine (12) configured to receive a portion of the primary rotational energy or to provide secondary rotational energy, an inverter (34) configured to control a rotor of the electric machine and a hydraulic pump (20) for supplying hydraulic fluid to a hydraulic system load (22). A rotatable pump shaft or pump rotor of the hydraulic pump is coupled or decoupled selectively to the engine shaft, the rotor, or both for receipt of at least a portion of the primary rotational energy, the secondary rotational energy, or both. A vehicle controller establishes a commanded rotor speed for the motor or electric machine based on a target pump rotational speed of a pump rotor or pump shaft for operation of the hydraulic pump at a set point or within an operational region consistent with the hydraulic system load or estimated work task of the vehicle for one or more sampling intervals, where the set point or operational region is defined by a hydraulic pump flow rate versus head characterization curve and where the target pump rotational speed can be independent of a rotational speed of the engine shaft in a first mode.
ERNGY MANAGMENT SYSTEMS FOR GROUND VEHICLES
An energy management system (11) for a ground vehicle comprises an internal combustion engine (10) for providing a primary rotational energy via an engine shaft (56), a motor or electric machine (12) configured to receive a portion of the primary rotational energy or to provide secondary rotational energy, an inverter (34) configured to control a rotor of the electric machine and a hydraulic pump (20) for supplying hydraulic fluid to a hydraulic system load (22). A rotatable pump shaft or pump rotor of the hydraulic pump is coupled or decoupled selectively to the engine shaft, the rotor, or both for receipt of at least a portion of the primary rotational energy, the secondary rotational energy, or both. A vehicle controller establishes a commanded rotor speed for the motor or electric machine based on a target pump rotational speed of a pump rotor or pump shaft for operation of the hydraulic pump at a set point or within an operational region consistent with the hydraulic system load or estimated work task of the vehicle for one or more sampling intervals, where the set point or operational region is defined by a hydraulic pump flow rate versus head characterization curve and where the target pump rotational speed can be independent of a rotational speed of the engine shaft in a first mode.
ERNGY MANAGMENT SYSTEMS FOR GROUND VEHICLES
ENERGIEMANAGEMENTSYSTEME FÜR BODENFAHRZEUGE
SYSTÈMES DE GESTION DE L'ÉNERGIE POUR LES VÉHICULES TERRESTRES
WU LONG (author) / VILAR ERIC (author)
2023-11-22
Patent
Electronic Resource
English
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