公开(公告)号：EP3517806A1

公开(公告)日：2019-07-31

申请号：EP18210237.6

申请日：2018-12-04

Applicant: CNH Industrial Belgium NV ,  Danfoss Power Solutions Inc.

Inventor： Hafvenstein, David ,  Nielsen, Simon

IPC: F16H61/42 ,  F16H61/4192

Abstract: A system (30), apparatus and method are provided for limiting operating speed at high temperatures of a self-propelled, agricultural product applicator (10) having a hydraulic drive system (28) including a pump (32) supplying pressurized hydraulic fluid to a variable-displacement hydraulic motor (12, 14, 16, 18) operatively connected for propelling the applicator (10). A temperature sensor (38) detects a temperature of the pressurized hydraulic fluid in the hydraulic system (28). A propel controller (40) is operatively connected between the temperature sensor (38) and the propulsion motor (12, 14, 16, 18) and configured for limiting displacement of the propulsion motor (12, 14, 16, 18) according to one or more predetermined de-rated conditions resulting in reduced motor speed, in accordance with a predetermined schedule, when predetermined motor de-rating activation temperature limits of the hydraulic fluid are detected by the temperature sensor (38). The controller (40) is further configured for providing a de-rated condition warning signal to limiting displacement of the propulsion motor (12, 14, 16, 18).

公开(公告)号：EP4174315A1

公开(公告)日：2023-05-03

申请号：EP22204395.2

申请日：2022-10-28

Applicant: Danfoss Power Solutions Inc.

Inventor： Traeger Hansen, Thomas ,  Nielsen, Simon

IPC: F04B49/00 ,  F04B49/06

Abstract: A method for calibrating an electrohydraulic pump (18) in a system (10) comprising a machine (12) having a propel system (14) that includes an engine (16) connected to an electrohydraulic pump. A micro-controller (20) having software (22) and an input device (24) is connected to a plurality of sensors (26) mounted about the machine. The software uses a plurality of parameters to convert internal analog drive signals into analog output signals to control the electrohydraulic pump and motion of the machine where the parameters include a forward start current value and a reverse start current value.