Danfoss Power Solutions Aps

Danfoss Power Solutions Inc.

Thomas Traeger Hansen

Tom Rudolph

Niels Bjarne Hansen

Morten Hoeck Petersen

Jens Vester

Simon Nielsen

Søren Pedersen

A system for calibrating an electrohydraulic pump using a micro-controller that has software that may command the engine to a speed value and to uncommand the electrohydraulic pump such that a baseline engine load is defined. The software may also, thereafter, command the electrohydraulic pump to ramp up until the electrohydraulic pump goes into stroke thereby increasing the engine load to an amount over the baseline engine load. When this occurs, the software may define a start current value for that direction of the electrohydraulic pump.

System for calibration of electrohydraulic pump start current based on engine's output torque signal

A hydraulic steering arrangement () comprising a supply port arrangement having a pressure port and a tank port, a working port arrangement having two working ports (L, R), a mechanical steering unit () connected to a steering wheel () and being arranged between the supply port arrangement and the working port arrangement (L, R), supply valve means () having a connection to the pressure port and to the working port arrangement (L, R) and being controlled by a controller (), and a steering wheel sensor () connected to the controller () is described. Such a steering arrangement could allow a comfortable feeling for the driver. To this end the steering wheel sensor () is mounted in a position of minimum play to steering wheel () and steering wheel sensor () and detects a beginning of a movement of the steering wheel (), wherein the controller () actuates the supply valve means () upon beginning of the movement, and the supply valve means () supply hydraulic fluid to the working port arrangement (L, R).

Hydraulic steering arrangement

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Nordborg, Denmark

Thomas Traeger Hansen