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. 26, 1996
Filed:
Nov. 29, 1995
Mike Livshiz, Southfield, MI (US);
David J Sanvido, Novi, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
Engine torque control as a function of a steady state and a transient torque control command to drive engine speed toward a target engine speed provides for a correction to the steady state torque control command to account for unmodelled effects of such slowly changing parameters as ambient temperature and pressure and engine coolant temperature, by determining a difference between an expected and an actual engine control parameter as function of the current engine operating level, translating such difference to an engine torque requirement deviation caused by unmodelled effects, and providing a torque correction therefor so that compensation may be provided in an appropriate manner for the unmodelled effects. The torque correction may further be stored as a function of the current value of the slowly changing parameters to develop a stored model which may be accessed, once developed, to provide the compensation with minimum on-line computation.