Intake air and carburetor heating arrangements for V-twin engines

US7284508B2 · kind B2 · utility

Assignee

• Tecumseh Products Company · US

Inventors

• Russell J. Dopke · Elkhart Lake, US
• David R. Brower · Beaver Dam, US
• Scot A. Koehler · Appleton, US
• Gary Stenz · New Holstein, US
• Clyde R. Wetor · Cascade, US
• Steven T. Davis · Green Bay, US
• Randall E. Sterr · North Fond du Lac, US

Key dates

• Filing date: Jul 17, 2006
• Grant date: Oct 23, 2007
• Expiry date: Jul 17, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A V-twin engine having a crankcase and a pair of cylinders defining a V-space therebetween, wherein the V-space is substantially enclosed, and a carburetor is positioned within the V-space. An intake air preheating arrangement supplies heated intake air to the carburetor, and a carburetor heating arrangement heats the V-space and the carburetor which is positioned within the V-space. Each of the foregoing arrangements, used separately or in combination within one another, aids in preventing “freeze-up” of the carburetor during running of the engine in a cold environment.