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:
Aug. 20, 1996
Filed:
Feb. 03, 1995
Applicant:
Inventors:
Yusuke Hasegawa, Wako, JP;
Isao Komoriya, Wako, JP;
Eisuke Kimura, Wako, JP;
Shusuke Akazaki, Wako, JP;
Yoichi Nishimura, Wako, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G / ; F02D / ; F01N / ;
U.S. Cl.
CPC ...
36443105 ; 36443103 ; 36443104 ; 60276 ; 60277 ; 123673 ; 123479 ;
Abstract
A system for estimating air/fuel ratios in the individual cylinders of a multicylinder internal combustion engine from an output of an air/fuel ratio sensor installed at an exhaust system of the engine. In the system, the exhaust system behavior is derived by a model in which X(k) is observed from a state equation and an output equation in which an input U(k) indicates air/fuel ratios in the individual cylinder and an output Y(k) indicates of the estimated air/fuel ratio as