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. 31, 1984
Filed:
Oct. 22, 1981
Applicant:
Inventors:
Atsushi Suzuki, Kariya, JP;
Norio Omori, Kariya, JP;
Masakazu Ninomiya, Kariya, JP;
Susumu Akiyama, Kariya, JP;
Yuji Hirabayashi, Aichi, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123419 ; 123436 ; 364158 ; 36443105 ;
Abstract
Spark ignition timing of an internal combustion engine is oscillated on each side of a variable reference setting by varying it at stepwisely variable amounts during positive and negative swings and the resultant engine speed is detected in at least three successive phases. The detected engine speed values are compared one against each other to determine whether they satisfy one of two specified conditions. The variable reference is adjusted in a direction toward an optimum position depending on which one of the conditions is satisfied.