Connecting rod for a variable compression internal combustion engine

US10954850B2 · kind B2 · utility

Assignee

• ECO Holding 1 GmbH · DE

Inventors

• David Huber · North Canton, US
• Dietmar Schulze · Kandern, DE
• Mario Witopil · Marktheidenfeld, DE

Key dates

• Filing date: Mar 21, 2019
• Grant date: Mar 23, 2021
• Expiry date: Mar 21, 2039

Classification

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

Abstract

A connecting rod for a variable compression internal combustion engine, the connecting rod an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber and a second cylinder including a second hydraulic chamber, a first inlet for feeding hydraulic fluid into the first cylinder from a supply and a first outlet for draining the hydraulic fluid from the first cylinder, a second inlet for feeding hydraulic fluid into the second cylinder from the supply and a second outlet for draining the hydraulic fluid from the second cylinder, a switch valve for controlling a hydraulic fluid flow, the switch valve including a piston that is movable in a housing, wherein the piston is displaceable into a first switching position or a second switching position, wherein the second outlet of the second cylinder is connected with the supply in the first switching position and the first outlet of the first cylinder is connected with the supply in the second switching position, wherein the first cylinder is associated with a first check valve which facilitates fee…