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:
May. 23, 2017
Filed:
Jul. 17, 2012
Yuji Yasui, Saitama, JP;
Hideki Matsunaga, Saitama, JP;
Hans Hardam, Tokyo, JP;
Toshiharu Takahashi, Tokyo, JP;
Masatoshi Yamada, Tokyo, JP;
Hiroshi Uike, Tokyo, JP;
Yuji Yasui, Saitama, JP;
Hideki Matsunaga, Saitama, JP;
Hans Hardam, Tokyo, JP;
Toshiharu Takahashi, Tokyo, JP;
Masatoshi Yamada, Tokyo, JP;
Hiroshi Uike, Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L., Luxembourg, LU;
Abstract
The objective of the present invention is to provide an exhaust purification system that is capable of purifying exhaust gas during both lean and stoichiometric driving. The exhaust purification system is equipped with: a feedback-use identifier, which identifies parameter values such that the error between the output value from a LAF sensor and the estimated value for the LAF sensor output as obtained from a model equation is minimized; and a stoichiometric driving mode controller. The controller performs feedback control and thereby determines the fuel injection amount such that in the stoichiometric driving mode the equivalence ratio value as calculated from the parameters reaches a target value which is set such that a three-way purification reaction occurs in an under-engine catalyst. The identifier identifies the model parameters before feedback control is initiated by the controller.