Air-intake arrangement for a two-stroke engine

US4600418A · kind A · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Reinhard Gommel · Backnang, DE
• Jurgen Laser · Backnang, DE
• Klaus Hoppner · Erbach, DE
• Gerhard Meyer · Lehrberg, DE
• Hans G. Salomon · Dombühl, DE
• Gunter Wolf · Eberdingen, DE
• Dieter Wieland · Neckarrems, DE
• Hermann Weiss · Hamburg, DE
• Jurgen Wolf · Kriftel, DE

Key dates

• Filing date: Jan 22, 1985
• Grant date: Jul 15, 1986
• Expiry date: Jan 22, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/28
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention is directed to an air-intake arrangement for a two-stroke engine for use in hand-guided, engine-driven apparatus such as motor-driven chain saws. The air-intake arrangement includes an air filter and a baffle wall for guiding fuel particles that are buffeted back out of the air induction channel by the engine. The baffle wall has a curvature to define a deflector to redirect the fuel particles in a largely gaseous state towards the carburetor. The arrangement provides an optimum air-fuel mixture which is not overrich and a trouble-free operation of the engine.