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:
Feb. 06, 2007
Filed:
Feb. 02, 2005
James Dosdall, Gross Ile, MI (US);
Steve Magner, Farmington Hills, MI (US);
Mrdjan Jankovic, Birmingham, MI (US);
James Dosdall, Gross Ile, MI (US);
Steve Magner, Farmington Hills, MI (US);
Mrdjan Jankovic, Birmingham, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A system comprising of an engine having a first group of cylinders and a second group of cylinders, a first variable valve system in said first group, a second variable valve system in said second group, and a controller for determining degradation of operation of at least one of said first and second variable valve systems, said controller determining said degradation in response to controller errors of said valves and differences between operation of said first and second valve systems.