Title:
IGNITION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/093351
Kind Code:
A1
Abstract:
[Problem] To provide an ignition device which effectively prevents heat friction from occurring at the tip of a spark plug. This ignition device comprises: a central electrode, along the surface of which electromagnetic waves propagate; a discharge electrode attached to the tip of the central electrode; and a cylindrical case member which encompasses the central electrode and the discharge electrode, and the tip of which functions as an earthed electrode. In this case, the case member can be constituted in such a manner that the part that encompasses the discharge electrode has a smaller inner diameter than other parts, and an annular space can be provided to the rear of the discharge electrode.
Inventors:
IKEDA YUJI (JP)
MAKITA MINORU (JP)
MAKITA MINORU (JP)
Application Number:
PCT/JP2015/084829
Publication Date:
June 16, 2016
Filing Date:
December 11, 2015
Export Citation:
Assignee:
IMAGINEERING INC (JP)
International Classes:
H01T13/32; F02P13/00; F02P23/04
Domestic Patent References:
| WO2014115707A1 | 2014-07-31 |
Foreign References:
| JPS54124126A | 1979-09-26 |
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