Title:
CORONA IGNITION DEVICE AND ASSEMBLY METHOD
Document Type and Number:
WIPO Patent Application WO/2018/034943
Kind Code:
A8
Abstract:
A reversed-assembled corona igniter including an insulator, central electrode, and metal shell, wherein an outer diameter of the insulator increases adjacent a lower end of the metal shell to achieve an electrical advantage is provided. In addition, the insulator maintains strength because is not placed under tension during or after assembly, or once disposed in an engine. To achieve the increase in insulator outer diameter, the insulator includes a lower shoulder adjacent the shell firing end. An intermediate part, such as braze and/or a metal ring, is disposed between the insulator outer surface and the shell adjacent the shell firing end. To prevent tension in the insulator, the insulator can be supported at only one location between the insulator upper end and the insulator lower end, for example along the intermediate part.
Inventors:
BURROWS JOHN (GB)
MILLER JOHN (US)
MIXELL KRISTAPHER (US)
LYKOWSKI JAMES (US)
MILLER JOHN (US)
MIXELL KRISTAPHER (US)
LYKOWSKI JAMES (US)
Application Number:
PCT/US2017/046344
Publication Date:
March 14, 2019
Filing Date:
August 10, 2017
Export Citation:
Assignee:
TENNECO INC (US)
International Classes:
H01T13/36; H01T13/38; H01T13/44; H01T13/50; H01T21/02
Attorney, Agent or Firm:
STEARNS, Robert, L. et al. (US)
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