Arrangement for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel

US6668777B2 · kind B2 · utility

Assignees

• Dr. Ing. h.c. F. Porsche AG · DE
• Hydraulik-Ring GmbH · DE

Inventors

• Gerold Sluka · Neckartailfingen, DE
• Edwin Palesch · Lenningen, DE
• Alfred Trzmiel · Gräfenberg, DE

Key dates

• Filing date: Sep 18, 2002
• Grant date: Dec 30, 2003
• Expiry date: Sep 18, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L1/3442
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An arrangement is provided for relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel. An interior part, non-rotatably connected with the camshaft, has at least approximately radially extending webs or vanes. A driven cell wheel has several cells distributed along the circumference and bounded by webs. The camshaft is rotatable by way of the webs or vanes between two end positions relative to the cell wheel, and the interior part is laterally bounded by two cover elements connected with the cell wheel. Recesses forming chambers are provided to reduce friction between the webs or vanes of the interior part and the cover elements in the side walls of the vanes directed to the cover elements. During operation of the internal-combustion engine, the recesses are at least partially acted upon by hydraulic oil.