Electromagnetic valve control device and work vehicle
AssigneeKubota Corporation
InventorsTetsuo Yamaguchi, Ryoma Iwase
Life of this patent
Estimating the term…
Loading patent…
AssigneeKubota Corporation
InventorsTetsuo Yamaguchi, Ryoma Iwase
Estimating the term…
An electromagnetic valve control device includes a current gear ratio obtainer to obtain a current gear ratio as a ratio of an output revolutions number of a driver and an output revolutions number of a transmission, a current electric current value obtainer to obtain a current electric current value as a value of an electric current to be inputted to a first electromagnetic valve or a second electromagnetic valve, and a switching controller to, based on the current electric current value and a gear ratio difference as a difference between a target gear ratio and the current gear ratio, perform electromagnetic valve switching control to switch between use of the first electromagnetic valve to control a pump swash plate and use of the second electromagnetic valve to control the pump swash plate.
An electromagnetic valve control device for a transmission to vary motive power from a driver with use of a gear transmission and a hydrostatic continuously variable transmission and output varied motive power, the electromagnetic valve control device being configured or programmed to control, based on a target gear ratio and with use of a value of an electric current for the continuously variable transmission, a first electromagnetic valve to control a pump swash plate on a normal rotation side of a neutral position and a second electromagnetic valve to control the pump swash plate on a reverse rotation side of the neutral position, the electromagnetic valve control device comprising:
Dependencies are inferred from the claim text.