BOUGIE D'ALLUMAGE A TIGE INCANDESCENTE POUR MOTEUR A COMBUSTION INTERNE

A.LA BOUGIE D'ALLUMAGE POUR MOTEURS A COMBUSTION INTERNE COMPREND UNE TIGE INCANDESCENTE ENFERMEE DANS UNE ENVELOPPE METALLIQUE ET INCORPOREE DANS UN BLOC L'ISOLANT ELECTRIQUEMENT;B.L'ENROULEMENT DE FIL RESISTANT 24 FORMANT LA TIGE INCANDESCENTE EST COMPOSE D'AU MOINS DEUX FILS JUXTAPOSES ET TORSADES 24-1 ET 24-2 OU LE PAS 27 D'ENROULEMENT DU FIL DANS LA TORSADE EST SUPERIEUR A N FOIS LE DIAMETRE 28 DE CHAQUE FIL, N ETANT LE NOMBRE DE FILS. To prevent an increase in diameter or the formation of fissures of resistance wire elements which are placed within a glow sleeve (22) of a glow element (13) during a compaction step in which a pulverized or powder-like heat conductive resistance material (26), for example magnesium oxide, is compacted within the glow element (13) to securely seat the resistance wire (24) therein, the resistance wire (24) is made of a plurality, for example two individual wire elements or strands (24/1, 24/2) twisted together, such that the pitch (27) of the twist is greater than n times the diameter of the number of wire strands twisted together, for example, for two wires, about three times the individual wire element or strand diameter.