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. 30, 1993
Filed:
Dec. 20, 1991
Kazuhiko Norota, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An apparatus for controlling a control parameter of a multicylinder internal combustion engine so that a cycle-by-cycle torque variation is equal to a target torque variation after an inter-cylinder correction for bringing the quantities of torque generated in a plurality of cylinders into agreement is performed. In the engine control apparatus, a modification part modifies a range within which a torque variation correction factor can change into a narrower range, when it is judged that the inter-cylinder correction has not been completed, so that a control part generates an appropriate control parameter based on first correction factors calculated by a first calculation part and the torque variation correction factor calculated by a second calculation part even when the inter-cylinder correction routine has not been completed.