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:
Jul. 07, 2026
Filed:
Feb. 14, 2025
Mazda Motor Corporation, Aki-gun, JP;
Yuto Matsushima, Aki-gun, JP;
Yuichiro Tsumura, Aki-gun, JP;
Yukio Haizaki, Aki-gun, JP;
Seiya Sugimoto, Aki-gun, JP;
Shigeru Nakagawa, Aki-gun, JP;
Shuhei Shintani, Aki-gun, JP;
Masaki Miyoshi, Aki-gun, JP;
Masahiro Ueki, Aki-gun, JP;
Mazda Motor Corporation, Aki-gun, JP;
Abstract
To reduce regular combustion variations across combustion cycles, an engine control apparatus includes: an engine that has cylinders inside of which gas exchange is performed by opening and closing an intake valve and an exhaust valve for each cylinder, and that is operated by causing a plurality of the cylinders to sequentially execute combustion cycles; a combustion control device that is attached to the engine, and controls combustion in each of the plurality of cylinders; and a controller that controls the operation of the engine by outputting a control signal to the device, wherein the controller, before combustion in each of the plurality of cylinders, estimates state quantities of the cylinder based on a plant model of the engine which indicates regular combustion variations across the combustion cycles, and outputs to the combustion control device the control signal, which has been corrected based on the estimated state quantities.