Connecting rod for two stage variable compression

US9322331B2 · kind B2 · utility

Assignee

• Hilite Germany GmbH · DE

Inventors

• Stefanie Hutzelmann · Mainburg, DE
• Falk Mueller · Würzburg, DE
• Dietmar Schulze · Kandern, DE
• Manfred Balling · Coburg, DE
• Tobias Matschiner · Marktheidenfeld, DE
• Christian Scheibe · Kassel, DE

Key dates

• Filing date: May 22, 2014
• Grant date: Apr 26, 2016
• Expiry date: Sep 23, 2034

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 two stage variable compression in an internal combustion engine, the connecting rod including a combustion piston pin support eye that is arranged offset relative to an axis in an eccentrical component which is pivotable about the axis in a first direction of rotation through a first hydraulic displacement cavity and pivotable in a second direction of rotation through a second hydraulic displacement cavity, wherein a hydraulic valve is arranged in the connecting rod, wherein the hydraulic valve includes a hydraulic supply connection at which a hydraulic pressure is applied, wherein the hydraulic pressure moves a hydraulic piston against a force of a preload of a spring, wherein the hydraulic piston remains in a stable low pressure position in a low range of the hydraulic pressure due to the preload of the spring.