公开(公告)号：US20130327013A1

公开(公告)日：2013-12-12

申请号：US13861825

申请日：2013-04-12

Applicant: SNECMA

Inventor： Francois LEGLAYE ,  Jean-Francois CABRE ,  David Gino STIFANIC

IPC: H01T13/16

CPC classification number: H01T13/16 ,  F02C7/266 ,  H01T13/20

Abstract: The invention relates to a spark plug for combustion chamber of a gas turbine engine comprising: an external body (1) forming ground electrode, intended to be received mainly in a bypass of the combustion chamber, an internal central electrode (2), an interposed insulator (3) with clearance between the external body (1) and the internal electrode (2), said spark plug terminating in a nose forming portion (5) intended for its part to be received in the flame tube of the chamber of the combustion chamber, a semi-conductor element being interposed between the central electrode and the ground electrode at the level of said nose forming portion, wherein the external body (1) comprises at least one cooling air inlet (6) which communicates inside the spark plug with at least one outlet (8, 9, 10) arranged at the level of the nose forming portion.

Abstract translation: 本发明涉及一种燃气涡轮发动机燃烧室用火花塞，其特征在于，包括：形成接地电极的主体（1），主要容纳在所述燃烧室的旁路中;内部中心电极（2） 在外部主体（1）和内部电极（2）之间具有间隙的绝缘体（3），所述火花塞终止于鼻部形成部分（5），用于将其部分接收在燃烧室的火焰管中 室，在所述鼻部形成部分的高度处插入在所述中心电极和接地电极之间的半导体元件，其中所述外部主体（1）包括至少一个在所述火花塞内部连通的冷却空气入口（6） 至少一个出口（8,9,10）布置在鼻部形成部分的高度处。