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:
Sep. 08, 2020
Filed:
Sep. 10, 2019
Denso Corporation, Kariya, Aichi-pref., JP;
Plasma Applications Co., Ltd., Hamamatsu-shi, Shizuoka, JP;
Tokyo Keiki Inc., Tokyo, JP;
Daisuke Tanaka, Nisshin, JP;
Fumiaki Aoki, Nisshin, JP;
Akimitsu Sugiura, Kariya, JP;
Masashi Kando, Hamamatsu, JP;
Jan Husarik, Hamamatsu, JP;
Hiroshi Okajima, Tokyo, JP;
DENSO CORPORATION, Kariya, JP;
PLASMA APPLICATIONS CO., LTD., Hamamatsu-shi, JP;
TOKYO KEIKI INC., Tokyo, JP;
Abstract
An ignition device ignites a mixture of air and fuel gas by plasma to generate an initial flame. The ignition device includes a spark plug having an inner conductor, a cylindrical outer conductor that holds the inner conductor inside, and a dielectric provided between the inner conductor and the outer conductor, and the spark plug configured to emit an electromagnetic wave to a plasma formation space between the inner conductor and the outer conductor to generate a plasma. The ignition device includes an electromagnetic wave power supply that generates the electromagnetic wave by inputting the electromagnetic wave power Ps to the spark plug and a power supply control unit that controls the electromagnetic wave power supply. The electromagnetic wave power supply is configured to generate high frequency power at a number of different frequencies. The power supply control unit outputs at least one of the plurality of high frequency powers generated by the electromagnetic wave power supply as the electromagnetic wave power.