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. 25, 2004
Filed:
Feb. 18, 2003
Paul A. Bauerle, Fenton, MI (US);
Allen B. Rayl, Waterford, MI (US);
Donovan L. Dibble, Utica, MI (US);
Kerfegar K. Katrak, Fenton, MI (US);
Kevin J. Storch, Brighton, MI (US);
Alfred E. Spitza, Jr., Brighton, MI (US);
Robert C. Simon, Jr., Novi, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An engine control system and method monitors torque increase during cylinder deactivation for a displacement on demand engine. A timer is started at cylinder deactivation. A controller adjusts throttle position and determines whether cylinder deactivation completes within a predetermined time. The controller adjusts throttle position based on the status of an enable condition. The controller determines if engine speed and vehicle acceleration are each within a threshold. The controller operates the throttle in a preload operating mode if the enable condition is met and operates the throttle in a normal operating mode if the enable condition is not met.