Arrangement and a method for controlling a work vehicle
First Claim
1. An arrangement for controlling a work vehicle, comprising a power source, and a hydraulic circuit comprising a pump driven by the power source, at least one hydraulic actuator arranged in fluid connection with the pump via a first conduit, and a variable displacement hydraulic motor unit arranged in fluid connection with the actuator and downstream from the actuator via a second conduit wherein the variable displacement hydraulic motor unit is arranged for controlling movement of the actuator, wherein the motor unit is arranged for a rotation connection to the power source in order to transmit energy to the power source.
2 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
An arrangement for controlling a work vehicle includes a power source, and a hydraulic circuit including a pump driven by the power source, at least one hydraulic actuator arranged in fluid connection with the pump via a first conduit, a variable displacement hydraulic motor unit arranged in fluid connection with the actuator and downstream the actuator via a second conduit. The variable displacement hydraulic motor unit is arranged for controlling movement of the actuator.
43 Citations
29 Claims
- 1. An arrangement for controlling a work vehicle, comprising a power source, and a hydraulic circuit comprising a pump driven by the power source, at least one hydraulic actuator arranged in fluid connection with the pump via a first conduit, and a variable displacement hydraulic motor unit arranged in fluid connection with the actuator and downstream from the actuator via a second conduit wherein the variable displacement hydraulic motor unit is arranged for controlling movement of the actuator, wherein the motor unit is arranged for a rotation connection to the power source in order to transmit energy to the power source.
- 12. An arrangement for controlling a work vehicle, comprising a power source, and a hydraulic circuit comprising a pump driven by the power source, at least one hydraulic actuator arranged in fluid connection with the pump via a first conduit, and a variable displacement hydraulic motor unit arranged in fluid connection with the actuator and downstream from the actuator via a second conduit wherein the variable displacement hydraulic motor unit is arranged for controlling movement of the actuator, wherein the arrangement comprises a plurality of hydraulic actuators for performing a plurality of work functions, and one variable displacement motor unit is arranged for controlling each work function.
-
18. An arrangement for controlling a work vehicle, comprising a power source, and a hydraulic circuit comprising a pump driven by the power source, at least one hydraulic actuator arranged in fluid connection with the pump via a first conduit, and a variable displacement hydraulic motor unit arranged in fluid connection with the actuator and downstream from the actuator via a second conduit wherein the variable displacement hydraulic motor unit is arranged for controlling movement of the actuator, wherein the pump and the motor unit are coupled in such a way to the power source that they rotate at the same speed.
-
19. A method for controlling a work vehicle, comprising steps of
receiving a work function operator signal from an operator of the vehicle, and depending on a requested work function in the operator signal, adjusting a displacement of a variable displacement hydraulic motor unit arranged downstream of a hydraulic actuator, which is arranged for performing the work function, for controlling movements of the actuator, and transmitting energy from the motor unit via a rotation connection to a power source.
-
28. A method for controlling a work vehicle, comprising steps of
receiving a work function operator signal from an operator of the vehicle, and depending on a requested work function in the operator signal, adjusting a displacement of a variable displacement hydraulic motor unit arranged downstream of a hydraulic actuator, which is arranged for performing the work function, for controlling movements of the actuator, and at a same time as the step of adjusting the displacement of the motor unit is done, supplying a pressurized fluid in a non-throttled manner from a pump to the actuator so that the actuator performs the requested work function. recovering energy by transmitting energy from the motor unit to a power source, and operatively driving the pump by the power source.
-
29. A method for controlling a work vehicle, comprising steps of
receiving at least one work function operator signal from an operator of the vehicle, and depending on a requested work function in the operator signal, adjusting a displacement of a plurality of variable displacement hydraulic motor units arranged downstream of a plurality of hydraulic actuators arranged for performing a plurality of work functions, for controlling movements of the actuator.
Specification