Hydraulic valve and piston rod with hydraulic valve

US9964031B2 · kind B2 · utility

Assignee

• Hillte Germany GmbH · DE

Inventors

• Manfred Balling · Coburg, DE
• Stefanie Hutzelmann · Mainburg, DE
• Dietmar Schulze · Kandern, DE
• Tobias Matschiner · Marktheidenfeld, DE

Key dates

• Filing date: Feb 28, 2016
• Grant date: May 8, 2018
• Expiry date: Jul 20, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/22
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic valve, in particular for shifting an actuation piston in a piston rod for an internal combustion engine with variable compression, the piston rod including a valve housing which includes a first operating connection and a second operating connection and a supply connection which is loadable with a hydraulic pressure of a hydraulic fluid, wherein a piston that is movably arranged in the valve housing is movable in a linear manner against a force of a preloaded spring, wherein the operating connections and the supply connection are sealable relative to each other and against an ambient atmosphere by seal elements upon correct installation in a valve receiving bore hole of the connecting rod, and wherein the seal elements are applicable against a wall of the valve receiving bore hole in a sealing manner due to the hydraulic pressure.