Hydraulic control device
AssigneeHonda Motor Co., Ltd.
InventorsMasamichi Harada, Kyohei Sakagami
Life of this patent
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Abstract
In a control unit of a hydraulic control device, a vehicle state grasping unit grasps a vehicle state of a vehicle, and an output determination unit determines whether an operation point depending on the vehicle state that is decided by an operation point decision unit is over a discharging capability limit line. A pump controller stops a second pump or decreases a rotation number if the output determination unit determines that the operation point is over the discharging capability limit line.
Claims6
A hydraulic control device including, between a first pump and a hydraulic operation unit of a transmission, a second pump and a check valve connected in parallel and configured to supply first oil from the first pump to the hydraulic operation unit through the check valve, or pressurize the first oil that is supplied from the first pump with the second pump and supply the first oil that has been pressurized to the hydraulic operation unit as second oil, the hydraulic control device comprising:
- a vehicle state grasping unit configured to grasp a vehicle state of a vehicle including the transmission;
- an output determination unit configured to determine whether a request output for the second pump depending on the vehicle state is beyond a discharging capability of the second pump;
- and
- a pump controller configured to stop the second pump or decrease a rotation number of the second pump if the output determination unit determines that the request output is beyond the discharging capability.
Dependencies are inferred from the claim text.