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:
Nov. 10, 1998
Filed:
Nov. 25, 1996
Lisa Marie Unuvar, Flint, MI (US);
Susan Jean Lane, Clarkston, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
Mechanical lash in a cruise control system including a cruise control actuator linked to an engine intake air valve through a cruise cable assembly is automatically measured and stored for use in cruise control operations. The cruise control actuator is driven from a base position along a position schedule while an engine parameter responsive to change in intake air valve position is monitored for any significant parameter change indicating movement of the intake air valve in response to the actuator movement. The amount of actuator movement required before any significant change occurs in the engine parameter is stored as representing the mechanical lash. Cruise control commands are augmented by the learned mechanical lash before being applied to the cruise control actuator.