Method of producing a cylinder in a two-cycle engine

US6842979B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Igor Klaric · Bad Marienberg, DE
• Ralf Blechschmidt · Marktredwitz, DE
• Andreas Bähner · Waiblingen, DE
• Matthias Hehnke · Schorndorf, DE
• Christian Brüning · Backnang, DE
• Konrad Knaus · Gaildorf, DE
• Jorg Schlossarczyk · Winnenden, DE
• Peter Pretzsch · Schorndorf, DE
• Rolf Sattelmaier · Waiblingen, DE
• Jörg Jacubzig · Löwenstein, DE

Key dates

• Filing date: Nov 26, 2002
• Grant date: Jan 18, 2005
• Expiry date: Jan 15, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49996
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method is provided for producing a cylinder in a two-cycle engine. The cylinder bore is first machined as a preparation for the provision of a coating. The thereby resulting window edges that surround an inlet window are then at least partially chamfered. The cylinder bore is consequently provided with the coating, which at least partially overlaps the chamfered window edge. There thereby results in the region of the window edge a location of least spacing relative to the axis of the transfer channel. The piston liner or gliding surface is finally machined to a finished dimension such that in the region of the chamfered and coated window edge or corner there is formed a coating edge having a wall spacing relative to the location of least spacing, which such wall spacing having a maximum value of 0.7 mm.