A glow plug (1) includes a cylindrical tube (7) which has a closed front end portion, a heating coil (9) which is inserted into the inside of the tube (7), and a seal portion (11) which is formed on a rear-end-side opening of the tube (7) and seals the ins...

The invention concerns a glow plug comprising a heating rod (11), a plug body (13) having a receiving housing (14) of the heating rod, a receiving sleeve (16) which is fixed rigidly and impermeably to the proximal portion of the heating rod, and a load sen...

The plug has a heating rod (3) movable in a housing (1) in an axial direction. The heating rod protrudes from the housing to a front end. A measuring membrane (4) and expansion measuring strips (6) are provided for measuring combustion chamber pressure tha...

A glow plug comprising: a cylindrical housing; a heater member as defined herein; a conductive center pole as defined herein; a first piezoelectric element as defined herein; and a second piezoelectric element as defined herein; wherein each of said first ...

One end of a ceramics heater 2 is secured to one end of a metallic outer sleeve 4. The negative pole of the heater 2 is electrically connected to the metallic outer sleeve while the positive pole is connected to an external connection terminal 8 through an...

A glow plug 1 includes a sheathed heater 3 and a metallic shell 2. The sheathed heater 3 is configured such that a resistance wire coil 3b having a heating coil portion 30b and an insulating MgO powder 3d are placed in a sheath 3a and such that a bar elect...

A glow plug exhibiting excellent durability, being capable of preventing short circuit potentially caused by adhesion of carbon, and being capable of detecting ion current accurately, is disclosed, as well as a method for manufacturing the same. The glow p...