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:
Jan. 02, 2007
Filed:
Aug. 29, 2005
Gang Song, Canton, MI (US);
Ilya V. Kolmanovsky, Ypsilanti, MI (US);
John Ottavio Michelini, Sterling Heights, MI (US);
Alexander O'connor Gibson, Ann Arbor, MI (US);
Larry Allen Hardy, Riverview, MI (US);
Michael John Cullen, Northville, MI (US);
Mrdjan J. Jankovic, Birmingham, MI (US);
Xiaoying Zhang, Dearborn Hts., MI (US);
Gang Song, Canton, MI (US);
Ilya V. Kolmanovsky, Ypsilanti, MI (US);
John Ottavio Michelini, Sterling Heights, MI (US);
Alexander O'Connor Gibson, Ann Arbor, MI (US);
Larry Allen Hardy, Riverview, MI (US);
Michael John Cullen, Northville, MI (US);
Mrdjan J. Jankovic, Birmingham, MI (US);
Xiaoying Zhang, Dearborn Hts., MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An electronic valve actuation system and control method is described. The valve timing is changed between early and late intake valve closing depending on engine operating conditions. Further, valve timing is adjusted to control engine airflow or engine torque. Finally, air-fuel ratio is adjusted based on feedback from an exhaust gas oxygen sensor as well as an estimate of air, fuel, and residual exhausted from cylinders operating with late valve closing (after bottom dead center) timing.