Oil supply for an internal combustion engine

US7753024B2 · kind B2 · utility

Assignee

• Wacker Neuson SE · DE

Inventors

• Wolfgang Hausler · Munich, DE
• Otto W. Stenzel · Zöblitz, DE
• Georg Sick · Feldafing, DE

Key dates

• Filing date: Apr 20, 2005
• Grant date: Jul 13, 2010
• Expiry date: Jan 6, 2026

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2001/086
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an oil supply for an internal combustion engine, comprising an oil supply device for the supply of oil to a piston, reciprocating in a cylinder. The oil supply device is embodied such that at least at a point at which the piston is in the region of bottom dead centre, oil is introduced directly into a region below the piston, by means of the oil supply device, in particular, beneath the piston crown and within the piston skirt. The oil supply device thus comprises at least one tube element, extending into a region beneath the piston crown. The tube element terminates as close as possible to a gudgeon pin, when the piston is at bottom dead center. A targeted lubrication of the mechanically and thermally highly loaded gudgeon pin can thus be guaranteed. It is also possible by means of the oil supply to supply transfer ports of a two-stroke engine with oil, counteracting a tendency to coke up.