Vibration damper for the crankshaft of a piston engine

US6308678A · kind A · utility

Assignee

• LUK Lamellen Und Kupplungsbau · US

Inventors

• Wolfgang Haas · Schömberg, DE
• Ruben Schmitt · Bühl, DE
• Friedrich Gerhardt · Leutesheim, DE
• Wolfgang Reik · Bühl, DE
• Steffen Lehmann · Ettlingen, DE
• Willi Ruder · Lahr (Eifel), DE

Key dates

• Filing date: Sep 13, 2000
• Grant date: Oct 30, 2001
• Expiry date: Sep 13, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2183
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The crankshaft of a piston engine is assembled with a vibration damper into a discrete module prior to mounting of such module in axial and/or radial bearings of the housing of the engine. The damper has an input element which rotates with the crankshaft and a mass which is angularly movable relative to the input element against the resistance of coil springs. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. Alternatively, the damper can be installed in or on or can constitute a cheek of the crankshaft. The coil springs can operate in parallel with a friction generating device which also opposes rotation of the input element and the mass of the damper relative to each other.