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. 27, 1988
Filed:
Nov. 05, 1986
Kiyomi Morita, Katsuta, JP;
Junji Miyake, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An engine control system which controls ignition timing for, and fuel supply to, an engine by scanning a map by using as parameters a first item of data representing the number of revolutions of the engine and a second item of data representing engine load. The engine control system includes filter means for providing a third item of data by suppressing the rate of change of the second item of data. The third item of data is used in place of the second item of data for scanning the map only when the engine is in a predetermined range of operating conditions in which the rate of change of a manipulated variable of a throttle valve, the number of revolutions of the engine and the rate of change of the engine load are all less than respective predetermined values.