Clark Equipment Compnay

Doosan Bobcat North America Inc.

Marty Carpenter

Matthew Kaldor

Charles Young

Scott W Becker

Douglas Kallas

Eric Zabel

Jonathan J Roehrl

Kevin Joseph Zent

Trevor W Krause

Boston Zachmann

Scott Becker

A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.

System and methods for cycle time management

A power machine can include a hydraulic drive system that includes an infinitely variable hydraulic drive motor. A run-time displacement of the hydraulic motor can be adjusted based on commanded travel speed or based on a output torque. In some case, the run-time displacement can be selected from one of a plurality of displacement ranges, such as a high range and a low range.

Drive motor displacement control

A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.

System and method for positioning a lift arm on a power machine

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Bismarck, ND, United States of America

Marty Carpenter