Hydraulic arrangement with a switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression and connecting rod

US10330005B2 · kind B2 · utility

Assignee

• ECO Holding 1 GmbH · DE

Inventors

• Alexander Mudra · Marktheidenfeld, DE
• Dietmar Schulze · Kandern, DE

Key dates

• Filing date: Sep 9, 2017
• Grant date: Jun 25, 2019
• Expiry date: Sep 9, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K11/07
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic arrangement including a switch valve configured to control a hydraulic fluid flow of a connecting rod of an internal combustion engine with variable compression including an eccentrical element adjustment device for adjusting an effective connecting rod length, wherein the eccentrical element adjustment device includes at least a first cylinder and a second cylinder forming hydraulic chambers, wherein a first inlet is provided for feeding hydraulic fluid into the first cylinder through a supply conduit, wherein a second inlet is provided for feeding hydraulic fluid into the second cylinder through the supply conduit, wherein a first outlet is provided for draining hydraulic fluid from the first cylinder, wherein a second outlet is provided for draining hydraulic fluid from the second cylinder, wherein the switch valve includes a displaceable piston which is displaceable into a first switching position or a second switching position.