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:
Mar. 29, 2005
Filed:
Jan. 09, 2004
Vince Winstead, Farmington Hills, MI (US);
Ilya V. Kolmanovsky, Ypsilanti, MI (US);
Nate Trask, Dearborn, MI (US);
Vince Winstead, Farmington Hills, MI (US);
Ilya V. Kolmanovsky, Ypsilanti, MI (US);
Nate Trask, Dearborn, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method to compute, store, and inject adaptive valve timing corrections in a camless valvetrain architecture where a measurable (based on the resolution of the measuring methodology) error exists between the requested and delivered valve timing. This method is based on a measurement of the delivered valve timing, such as from a direct position sensor, (hall effect, LVDT, optical, etc.) or inferred position sensing based on valve actuator current (electronic actuation) or pressure (hydraulic actuation) feedback. This measured delivered valve timing information is used to compute offsets which, when applied to the desired timing, provide more accurate correlation between the delivered timing and the desired timing.