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:
Sep. 07, 1982
Filed:
Jun. 11, 1980
Nippondenso Co., Ltd., Kariya, JP;
Abstract
The air-fuel ratio of a mixture to be supplied to an engine is corrected by a microcomputer in accordance with integrated data produced by the process of integration performed in response to the output signal of an air-fuel ratio sensor for sensing the composition of exhaust gases from the engine and engine condition correction data corresponding to the then existing engine operating conditions. The necessary engine condition correction data are stored in the form of a map in a nonvolatile memory in accordance with the engine operating conditions as parameters. If, for example, any abnormal condition such as an abnormal rise in the temperature of a catalytic converter occurs, all the engine condition correction data in the nonvolatile memory are reset to a predetermined value.