Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HYBRID WORK MACHINE
In a hybrid work machine including an engine, an assist motor, a hydraulic pump which is driven by total torque of the engine and the assist motor, and an electric storage device which accumulates electric power generated by the assist motor and supplies the electric power when the assist motor performs electric discharge, the continuous electric discharge from the electric storage device due to continuous operation at high load pressure can be suppressed without causing an unusual operational feeling for the operator. To this end, a pump flow rate control unit 82 of a controller 80 includes a pump flow rate correction control unit 82b which judges whether each hydraulic pump 41a, 41b is in a high load operation state or not based on the output horsepower of at least one of the hydraulic pumps 41a and 41b and/or the delivery pressure of each hydraulic pump and performs control such that the delivery flow rate of the hydraulic pump 41a or 41b gradually decreases when the hydraulic pump 41a or 41b is in the high load operation state and the high load operation state continues beyond a predetermined time.
HYBRID WORK MACHINE
In a hybrid work machine including an engine, an assist motor, a hydraulic pump which is driven by total torque of the engine and the assist motor, and an electric storage device which accumulates electric power generated by the assist motor and supplies the electric power when the assist motor performs electric discharge, the continuous electric discharge from the electric storage device due to continuous operation at high load pressure can be suppressed without causing an unusual operational feeling for the operator. To this end, a pump flow rate control unit 82 of a controller 80 includes a pump flow rate correction control unit 82b which judges whether each hydraulic pump 41a, 41b is in a high load operation state or not based on the output horsepower of at least one of the hydraulic pumps 41a and 41b and/or the delivery pressure of each hydraulic pump and performs control such that the delivery flow rate of the hydraulic pump 41a or 41b gradually decreases when the hydraulic pump 41a or 41b is in the high load operation state and the high load operation state continues beyond a predetermined time.
HYBRID WORK MACHINE
HYBRIDE ARBEITSMASCHINE
MACHINE DE TRAVAIL HYBRIDE
IMURA SHINYA (Autor:in) / NISHIKAWA SHINJI (Autor:in) / HITA MASAFUMI (Autor:in) / AMANO HIROAKI (Autor:in)
29.05.2019
Patent
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2016