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:
Jul. 21, 2020
Filed:
Aug. 23, 2016
Denso Corporation, Kariya, Aichi-pref, JP;
The University of Tokyo, Tokyo, JP;
Masaaki Kono, Nishio, JP;
Daisuke Tanaka, Nishio, JP;
Takaaki Sato, Nishio, JP;
Akimitsu Sugiura, Kariya, JP;
Mitsuhiro Tsue, Tokyo, JP;
Shinji Nakaya, Tokyo, JP;
DENSO CORPORATION, Kariya, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
An ignition apparatus includes a plasma device, a first circuit, a second circuit, and a control unit. The plasma device produces a plasma discharge in an air-fuel mixture before an arc discharge is produced. The first circuit causes an ignition plug to start the arc discharge. The second circuit energizes a primary coil in a direction opposite to the direction of the energization by the first circuit during the arc discharge, to maintain energization of the secondary coil in the same direction as the direction of the energization started by an operation of the first circuit, to cause continuation of the arc discharge. The control unit controls operations of the first circuit, the second circuit, and the plasma device.