Length-adjustable connecting rod with reduced-mass outlet valve

US11378004B2 · kind B2 · utility

Assignees

• IWIS MOTORSYSTEME GMBH & CO. KG · DE
• AVL LIST GMBH · AT

Inventors

• Malte Heller · Munich, DE
• Kai Arens · Munich, DE
• Zoltan Riba · Olching, DE
• Martin Bodensteiner · Erding, DE
• Steffen Latz · Hersbruck, DE
• Bernhard Kometter · Judendorf, AT
• Robert A. St. John · Cheshire, US
• Wilhelm Greylinger · Mürzzuschlag, AT
• Heinrich Fürhapter · Graz, AT
• Siegfried Lösch · Graz, AT

Key dates

• Filing date: Oct 8, 2019
• Grant date: Jul 5, 2022
• Expiry date: Oct 8, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D15/02
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A length-adjustable connecting rod for an internal combustion engine, where the connecting rod includes at least one switchable outlet valve for opening and closing a pressure chamber, where the outlet valve comprises a valve body and a closing body that is operatively connected to the valve body, and a closing mechanism is present acting upon the closing body for directly moving the closing body and indirectly moving the valve body from a closed to an open position or vice versa. Such an outlet valve is to be configured to be operable. For this purpose, this closing body has a mass which is smaller than the volume defined by the envelope contour of the closing body multiplied by the density of steel (7.85 g/mm3). The use of such a closing body for a respective length-adjustable connecting rod is also provided.