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:
Sep. 23, 2008
Filed:
Dec. 08, 2005
Alex Gibson, Ann Arbor, MI (US);
John O. Michelini, Sterling Heights, MI (US);
James Mccallum, Ann Arbor, MI (US);
Ilya V. Kolmanovsky, Novi, MI (US);
Gang Song, Canton, MI (US);
Alex Gibson, Ann Arbor, MI (US);
John O. Michelini, Sterling Heights, MI (US);
James McCallum, Ann Arbor, MI (US);
Ilya V. Kolmanovsky, Novi, MI (US);
Gang Song, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for controlling an engine to reduce vehicle shuffle mode vibration during mode transition. The engine includes multiple cylinders, each with at least one electrically actuated valve, and the engine operates in a first mode having a first number of firing cylinders and a second mode having a second number of firing cylinders. The method comprises transitioning the engine from operating in the first mode to the second mode; adjusting at least a valve timing or lift of one of a last cylinder to be fired in said first mode and a first cylinder to be fired in said second mode to temporarily adjust a cylinder torque and thereby reduce vehicle shuffle mode vibration.