Internal combustion engine

US6941914B2 · kind B2 · utility

Assignee

• Tecumseh Products Company · US

Inventors

• Dale D. Snyder · Neenah, US
• Thomas A. Immel · Malone, US
• Scot A. Koehler · Appleton, US
• Gary Stanelle · Fond du Lac, US
• Karl W. Monis · Hartland, US
• Mark J. Glodowski · De Pere, US
• Russell J. Dopke · Elkhart Lake, US

Key dates

• Filing date: Apr 8, 2003
• Grant date: Sep 13, 2005
• Expiry date: May 17, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4927
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A twin cylinder engine, includes a pair of cylinder members mounted to mounting surfaces of a crankcase, and cylinder heads mounted to the cylinder members. The cylinder members are modular components, which may be pre-assembled with components of the valve train as packaged units before the cylinder members are attached to the crankcase. Each cylinder member rotatably supports a cam gear which extends into the crankcase for driving engagement with the crankshaft. The cylinder members may be configured for either side valve-type (“L-head”), or overhead valve-type (“OHV”) engines, and the cylinder members may also be used in single cylinder engines.