Inner seal for a camshaft adjusting device in an internal combustion engine, specially a blade cell adjusting device

US6170447A · kind A · utility

Assignee

• Ina Schaeffler oHG · DE

Inventors

• Mike Kohrs · Wilthen, DE
• Jochen Auchter · Weisendorf, DE
• Jens Schafer · Herzogenaurach, DE

Key dates

• Filing date: Oct 8, 1999
• Grant date: Jan 9, 2001
• Expiry date: Oct 8, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2001/34479
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal sealing of a vane-type adjusting device comprising a drive pinion (2) connected to a crankshaft of an internal combustion engine by a toothed belt or a timing chain and has a hollow space (9) into which a winged wheel (13) is inserted and rotationally fixed to a camshaft of an internal combustion engine, the drive pinion (2) comprising on the inner surface of its circumferential wall (3) at least one working chamber (5), and the wings of the winged wheel (13) divide each working chamber (5) into two pressure chambers (10, 11) and to avoid pressure medium leakage between the pressure chambers (10, 11) of each working chamber (5) and between the individual working chambers (5), each wing of the winged wheel (13) is configured as a separate wing segment (18) which is displaceable within a guide (15) in the winged wheel (13) and is sealed leak-tight radially by the radial centrifugal force which results from the rotation of the vane-type adjusting device (1) during engine operation, and axially by at least one prestressed axial sealing element (23).