Glow plug for internal combustion engines

摘要

A glow plug for internal-combustion engines, comprising: a metal body (12); a metal sheath (24) having one closed end (26) and one open end (28); a terminal (30) extending through the open end (28) of the sheath (24); a conductive powder (34) set in electrical connection with one end (36) of the terminal (30) and with the sheath (24); and a layer (38) of insulating powder set between the aforesaid conductive powder (34) and the sheath (24) in an area between the closed end (26) of the sheath (24) and the end (36) of the terminal (30).