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:
Oct. 15, 1991
Filed:
Mar. 12, 1990
Seiji Morino, Okazaki, JP;
Yasuhito Takasu, Toyohashi, JP;
Kozo Takamura, Nagoya, JP;
Masato Somiya, Anjo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
An ignition system of multispark type having an ignitability superior to that of a combination an ignition system of capacitor discharge type and a multispark system is disclosed. A first control signal is generated for turning on a first switching device a predetermined time before an ignition timing to store energy in an energy storage coil and turning off the first switching device at the ignition timing. A multispark control signal is generated for turning on a second switching device from the ignition timing and turning on and off the first and second switching devices alternately for a predetermined spark period. A second control signal is generated for turning on the first switching device upon the turning off of the second switching device to store energy in the energy storage coil and then turning off the first switching device to charge a capacitor with the energy stored in the energy storage coil.