Spark plug with ring shaped ground electrode

Details Spark plug with ring shaped ground electrode Spark plug with ring shaped ground electrode

H - Electricity

01

T

H01T 13/32 (2006.01) H01T 13/46 (2006.01)

Patent

CA 2044622

Abstract Spark plug for an internal combustion engine having a metal shell (20) enclosing a ceramic insulator (16) containing a conductive centre electrode (18) having a bottom end (58) exiting from the insulator. The bottom end of the centre electrode is spaced apart from a groud electrode ( 12) attached to the metal shell by at least one support member or mounting post (38) . The ground electrode is ring/open- ring shaped and its interior diameter ranges from equal to the exterior diameter of the centre electrode to a multiple of the size of the interior diameter of the centre electrode. Fig. 1

Bougie d'allumage pour un moteur à combustion interne dotée d'une caisse métallique (20) renfermant un isolant céramique (16) qui comporte une électrode centrale conductrice (18). Ladite électrode comprend une extrémité de fond (58) débordant ledit isolant, et espacée d'une électrode de mise à la terre (12) et fixée à la caisse métallique par au moins un organe de support ou colonne de montage (38). L'électrode de mise à la terre se présente en forme d'anneau ou d'anneau ouvert, son diamètre intérieur s'étendant entre une grandeur égale au diamètre extérieur de l'électrode centrale et un multiple de la grandeur du diamètre intérieur de ladite électrode centrale.

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