Motorcycle dynamic exhaust system

US7347045B2 · kind B2 · utility

Assignee

• Harley-Davidson Motor Company, Inc. · US

Inventors

• Alexander Bozmoski · Brookfield, US
• Timothy Osterberg · Mequon, US
• Michael Christopherson · Waukesha, US
• Anthony Coffey · Cedarburg, US
• William Pari · Waukesha, US
• Michael Richter · Berlin, DE
• Stacy L. Smith · Oconomowoc, US
• Richard Pierson · New Berlin, US
• Michael Selwa · Oconomowoc, US

Key dates

• Filing date: Jun 30, 2004
• Grant date: Mar 25, 2008
• Expiry date: Jul 3, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2590/04
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The present invention provides a method of operating a dynamic exhaust system of a motorcycle engine. The method includes providing a valve in the exhaust system that is movable to direct exhaust gases between a first flow path through the exhaust system and a second flow path through the exhaust system. The method includes actuating the valve at a first speed to redirect exhaust gases from the first flow path to the second flow path and actuating the valve at a second speed greater than the first speed to redirect exhaust gases from the second flow path to the first flow path.