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. 18, 2005
Filed:
Jun. 18, 2003
Paul A. Bauerle, Fenton, MI (US);
Kerfegar K. Katrak, Fenton, MI (US);
Kevin J. Storch, Brighton, MI (US);
Alfred E. Spitza, Jr., Brighton, MI (US);
Kevin C. Wong, Ann Arbor, MI (US);
Paul A. Bauerle, Fenton, MI (US);
Kerfegar K. Katrak, Fenton, MI (US);
Kevin J. Storch, Brighton, MI (US);
Alfred E. Spitza, Jr., Brighton, MI (US);
Kevin C. Wong, Ann Arbor, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An engine control system for monitoring torque increase during cylinder deactivation for a displacement on demand (DOD) engine includes a throttle and a controller. The controller adjusts a preload of the throttle prior to a cylinder deactivation event and determines whether a DOD fault is present during the cylinder deactivation event. The controller one of operates the engine without the preload in the deactivated mode and switches the engine back to the activated mode if the fault is present for a predetermined time. The controller cancels the preload if the DOD fault is present and resets the preload if the predetermined period has not expired. The DOD fault includes one of an engine speed fault, a transmission gear fault and a fueled cylinder fault.