Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission
AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG
InventorsRoshan Willeke, Eric Muller
Life of this patent
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Abstract
A volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission. The valve includes a control piston with a pressure surface and an oppositely facing pressure return surface. A supply segment is associated with the pressure surface, and a cooler return segment is connectable with the supply segment by a control edge of the control piston. A pressure return segment is associated with the pressure return surface, and a pressurizing segment is situated between the cooler return segment and the pressure return segment.
Claims12
A volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission, said valve comprising:
- a control piston having a first pressure surface and a second, pressure return surface axially spaced from and facing in a direction opposite to the first pressure surface;
- a supply segment in fluid communication with the first pressure surface;
- a cooler return segment in fluid communication with the supply segment upon movement of a control edge of the control piston away from the supply segment;
- a pressure return segment in fluid communication with the pressure return surface;
- and
- a pressurizing segment situated between the cooler return segment and the pressure return segment.
Dependencies are inferred from the claim text.