Crankshaft for reciprocating piston engine

US4867007A · kind A · utility

Assignee

• Porsche AG · DE

Inventor

• Peter Krotky · Simmozheim, DE

Key dates

• Filing date: Mar 16, 1987
• Grant date: Sep 19, 1989
• Expiry date: Mar 16, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2185
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A crankshaft with bearing pins and crank pins whereby the crank pins are delimited by counter weights constructed as webs or arms that extend transversely to the longitudinal axis of the crankshaft. These counter weights are circumcirculated during the rotation of the crankshaft at least by an air-oil-mixture in a crankcase and in an oil pan of the internal combustion engine. For reducing the power losses of the internal combustion engine by oil and or air-oil-mixture displacements by the webs or arms, the latter are constructed in their area disposed remote from the crank pins in the manner of aerodynamic bodies.