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:
Jun. 06, 1989
Filed:
Jan. 22, 1988
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ; F02P / ;
U.S. Cl.
CPC ...
123640 ; 123644 ; 123622 ;
Abstract
An ignition apparatus of electronic distribution type for a multi-cylinder internal combustion engine, comprising a plurality of ignition circuits each having an ignition coil and a power switching element for one or two cylinders of a multi-cylinder internal combustion engine is disclosed in which the ignition circuits are arranged into a plurality of ignition systems each having at least two of the ignition circuits and a signal current-limiting circuit is provided for each of the ignition systems to control the currents flowing through the power switching elements of the associated ignition circuits.