The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2008
Filed:
Oct. 13, 2005
Steve Wynveen, Germantown, WI (US);
Claus Bruestle, Forchheim, DE;
Timothy S. Reid, Fond du Lac, WI (US);
Eric S. Mueller, Fond du Lac, WI (US);
Steve Wynveen, Germantown, WI (US);
Claus Bruestle, Forchheim, DE;
Timothy S. Reid, Fond du Lac, WI (US);
Eric S. Mueller, Fond du Lac, WI (US);
Brunswick Corporation, Lake Forest, IL (US);
Abstract
A system is provided for monitoring changes in the operation of a valve system of an engine. An accelerometer provides vibration-related signals that are obtained by a microprocessor or similarly configured device and compared to a reference or baseline magnitude. The obtaining step can comprise the steps of measuring, filtering, rectifying, and integrating individual data points obtained during specific windows of time determined as a function of the rotational position of the crankshaft of the engine. These windows in time are preferably selected as a function of the position of exhaust or intake valves as they move in response to rotation of cams of the valve system.