Hydraulic control device

In a control unit of a hydraulic control device, a workload calculation unit calculates the amount of workload cut in a first pump when supply of first oil from the first pump to a continuously variable transmission mechanism through a check valve is switched to supply of second oil from a second pu...

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Bibliographic Details
Main Author Harada, Masamichi
Format Patent
LanguageEnglish
Published 12.11.2019
Subjects
BLASTING
DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
ENGINEERING ELEMENTS AND UNITS
FLUID-PRESSURE ACTUATORS
FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HYDRAULICS OR PNEUMATICS IN GENERAL
LIGHTING
MECHANICAL ENGINEERING
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:In a control unit of a hydraulic control device, a workload calculation unit calculates the amount of workload cut in a first pump when supply of first oil from the first pump to a continuously variable transmission mechanism through a check valve is switched to supply of second oil from a second pump to the continuously variable transmission mechanism. A workload determination unit determines whether the amount of workload loss of an ACG is more than the amount of workload cut. A motor controller stops a motor or decreases a rotation number if the workload determination unit determines that the amount of workload loss is more than the amount of workload cut.
Bibliography:Application Number: US201816056578