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:
Dec. 13, 1988
Filed:
Aug. 25, 1987
Kazuhiro Umehara, Hamamatsu, JP;
Toshiya Kataoka, Hamamatsu, JP;
Suzuki Jidosha Kogyo Kabushiki Kaisha, Hamana, JP;
Abstract
An ignition apparatus has an electrically controlled spark advance mechanism. It includes first ignition signal output circuit to output a first ignition timing signal with a predetermined spark advance synchronously with engine rotation, a second ignition signal output circuit to output for trolling a second ignition timing signal delayed by a predetermined crankshaft angle from the first ignition timing signal, a spark advance operating circuit to perform an arithmetic operation based on the first ignition timing signal and to output a third ignition timing signal which advances or delays the ignition timing as engine speed increases or decreases, a first ignition timing setting circuit which uses the first ignition timing signal for ignition timing for a predetermined time after the start of the engine and which thereafter uses the second ignition timing signal; and a second ignition timing setting circuit which, when the engine is accelerated before the predetermined time elapses, uses the third ignition timing signal for ignition timing.