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:
Jan. 04, 1983
Filed:
May. 21, 1980
Applicant:
Inventors:
Toshio Furuhashi, Mito, JP;
Noboru Sugiura, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
36443108 ; 123416 ; 123425 ; 73 35 ;
Abstract
Method and apparatus for controlling ignition timing of an internal combustion engine employing rotation speed information and load information of the engine to determine ignition timing data. A correction amount used to retard the ignition timing and representative of the magnitude of knocking is produced when knocking of the engine is detected. The ignition timing data is corrected in the direction of retardation based on the correction amount, and the ignition timing data is advanced at a predetermined cycle by a desired angle at a time during the time period in which knocking is not detected.