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:
May. 21, 2002
Filed:
Jul. 12, 2000
Pramod K. Jain, Farmington Hills, MI (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
Systems and methods for coordinating control of a DISI engine and automatic transmission determine the current and next engine operating modes and selectively modify or delay a requested transmission ratio change based on the current operating mode of the engine. Ratio changes requested during closed loop stoichiometric operation and during NOx purging cycles are commanded without delay while ratio changes requested during transitions between lean mode operation and stoichiometric operation may be delayed or the current operating mode extended to permit the ratio change to complete. Torque modulation may be provided during the ratio change using air, fuel, and/or spark control depending upon the engine operating mode.