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. 30, 1990
Filed:
Jun. 16, 1988
Applicant:
Inventors:
Masami Nagano, Katsuta, JP;
Takeshi Atago, Katsuta, JP;
Junji Miyake, Katsuta, JP;
Masahide Sakamoto, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123422 ; 123418 ;
Abstract
A detection processing of a rotational number of an engine is executed periodically in synchronism with a rotation of the engine. A calculation processing of an ignition timing correction amount (.DELTA.IGN) is executed periodically in every predetermined time independently on the rotational number detection of the engine. After the engine is accelerated, the ignition timing control of the engine is executed based on the ignition timing correction amount.