Internal combustion engine

US8261701B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Jörg Amann · Walheim, DE
• Eberhard Bohnaker · Leutenbach, DE
• Ricardo Hojczyk · Waiblingen, DE
• Ulrich Kapinsky · Waiblingen, DE
• Mark Reichler · Winnenden, DE
• Martin Rieber · Stuttgart, DE

Key dates

• Filing date: Oct 7, 2008
• Grant date: Sep 11, 2012
• Expiry date: Mar 29, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B2075/027
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine has a cylinder (2) and a crankcase (4). A combustion chamber (3) is formed in the cylinder (2) and is delimited by a piston (5). The piston (5) rotationally drives a crankshaft (7) in a rotational direction (21) via a connecting rod (6). The crankshaft (7) is arranged in a crankcase interior space (17). A mixture inlet (9) is provided in the crankcase interior space (17). In the crankcase interior space (17), at least one flow conducting element (23, 33, 43, 53, 63, 73) is provided which is spatially fixed and this flow conducting element projects into the crankcase interior space (17) and lies opposite to the rotational direction (21) of the crankshaft (7).