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:
Mar. 17, 1987
Filed:
Apr. 15, 1985
Motoshi Kawai, Anjo, JP;
Noboru Yamamoto, Kariya, JP;
Katuhisa Mase, Aichi, JP;
Takeshi Matsui, Toyohashi, JP;
Tomoatsu Mikino, Okazaki, JP;
Yoshiyuki Miyase, Okazaki, JP;
Ryoichi Okuda, Kariya, JP;
Koichi Suzumura, Palo Alto, CA (US);
Nippondenso Co., Ltd., Kariya, JP;
Abstract
In an apparatus for controlling the energization time of an ignition coil of an internal combustion engine, a desired ignition timing is computed in accordance with a load and rotation speed of the engine and an energization starting time of the ignition coil is computed in accordance with the ignition timing. The energization starting time is retarded in accordance with the primary current through the ignition coil and the energization time of the ignition coil is reduced. The primary current flow through the ignition coil is interrupted at the ignition timing.