Reciprocating internal combustion engine with a wet cylinder sleeve inserted into a cylinder crank housing

US4523555A · kind A · utility

Assignee

• Harley-Davidson Motor Company, Inc. · US

Inventors

• Hans Mezger · Freiberg, DE
• Reinhard Konneker · Monsheim, DE

Key dates

• Filing date: Jul 13, 1984
• Grant date: Jun 18, 1985
• Expiry date: Jul 13, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02F1/163
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A reciprocating internal combustion engine includes at least one wet cylinder sleeve which is inserted into a cylinder crank housing. The upper portin of the sleeve is clamped between a cylinder head and a cylindrical receptacle disposed inside the cylinder crank housing. Coolant flows through a space adjacent said upper portion. A lower portion of the cylinder sleeve is separated from the coolant and extends inside the receptacle. To achieve a favorable temperature pattern over the entire height of the cylinder sleeve, the coolant containing space has a broad cross-section in the upper portion of the cylinder sleeve formed by a constricted wall on the outer periphery of the cylinder sleeve. Furthermore, a closed annular air space is provided between the cylindrical receptacle and the lower portion of the cylinder sleeve.