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:
Apr. 10, 1990
Filed:
Mar. 06, 1989
Applicant:
Inventors:
Masanobu Uchinami, Himeji, JP;
Toshihisa Takahashi, Himeji, JP;
Kenji Ogawa, Himeji, JP;
Hitoshi Inoue, Amagasaki, JP;
Shinichi Nishida, Himeji, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123489 ; 123440 ; 204425 ;
Abstract
An air-fuel ratio controller of an internal combustion engine stops current flow of an oxygen pump and power supply to an heater when the engine stops. In one embodiment the A/F ratio controller related to the invention stops power supply to the heater a predetermined period of time after the engine stops.