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:
May. 06, 1980
Filed:
May. 03, 1978
Hirotoshi Nanjo, Susono, JP;
Kimihiro Boyama, Susono, JP;
Kokusan Denki Co., Ltd., Numazu, JP;
Abstract
An ignition system for a multicylinder engine comprising a magneto having an igniting exciter coil to induce an AC voltage in synchronism with rotation of the engine; ignition coils having secondary coil portions respectively connected to ignition plugs for cylinders of the engine, to supply a high voltage to the respective ignition plugs; and a primary current controlling semiconductor switch connected to the igniting exciter coil in parallel therewith to be turned on in advance of respective igniting positions of the cylinders so that a current flows through the semiconductor switch. The ignition system further comprises a signal generator driven by the engine and having signal coils to generate timing signals at the respective igniting positions of the cylinders; and primary current conducting semiconductor switches provided between the respective primary coil portions of the ignition coils and the igniting exciter coil to be turned on by the respective timing signals from the signal generator to abruptly pass the primary current through the respective primary coil portions of the ignition coils whereby a high voltage is established across the secondary coil portions of the ignition coils to spark the ignition plugs.