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:
Dec. 27, 2011
Filed:
Jun. 23, 2008
Kenneth J. Cinpinski, Ray, MI (US);
Donovan L. Dibble, Utica, MI (US);
Alexander J. Roberts, Commerce Township, MI (US);
Vijay Ramappan, Novi, MI (US);
Kenneth J. Cinpinski, Ray, MI (US);
Donovan L. Dibble, Utica, MI (US);
Alexander J. Roberts, Commerce Township, MI (US);
Vijay Ramappan, Novi, MI (US);
Abstract
A camshaft phasor control system for an engine includes a first camshaft position sensor that generates a first camshaft position signal based on a position of a first camshaft. A first summer generates a first error signal based on the first camshaft position signal and a first commanded position signal. A control module generates a raw duty cycle based on the first error signal. A second summer generates a modified duty cycle based on the raw duty cycle and a modifier. The control module generates the modifier based on the first error signal and speed of the first camshaft relative to a second camshaft.