A glow plug includes 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 sensor (17). The receiving sleeve (16) has a distal extremity portion which is turned up on the proximal side towards the exterior, and connected rigidly and impermeably to the plug body, so as to form a turned-up part (26) which is elastic in flexion and impermeable.

A heater of this invention includes an insulating base made of a ceramic, a resistor buried in the insulating base, and leads connected to end portions of the resistor, in which both the resistor and the leads contain electrical conductors and insulating ceramic particles dispersed in the electrical conductors and the insulating ceramic particles contained in the resistor are smaller than the insulating ceramic particles contained in the leads.

Disclosed is a piston ported two-stroke compression ignition internal combustion engine comprising: a cylinder having a fixed closed end, and a piston for reciprocation within the cylinder, wherein the closed end of the cylinder and the piston together define a combustion chamber therebetween; at least one heater to heat the combustion chamber; and a controller to control the heater to heat the combustion chamber when the controller determines that a temperature of the combustion chamber has fallen below a threshold temperature during reciprocation of the piston within the cylinder.

This document describes a heating rod for a glow plug with a ceramic glow element having a glow tip at its front end and a connector portion at its rear end, a contact element making electrical contact with the connector portion of the glow element, and a sheath, from which the front end of the glow element protrudes. According to this disclosure, the contact element is pressed against the glow element under pre-tension. Furthermore, this document describes a method for producing such a heating rod and a glow plug with such a heating rod.

On an inner wall surface of a plug hole, an internal thread portion and a seat portion are formed. The seat portion has a tapered seat surface. A glow plug with a combustion pressure sensor includes a housing, a glow heater, a load transfer member, and a pressure detector. The housing has an external thread and a seat facing portion. The seat facing portion has a tapered contact surface in surface contact with the tapered seat surface. A recessed portion recessed to be in non-contact with the seat portion is formed annularly about a central axis of the housing.

A glow plug is described, having a body, a glow pin which protrudes from a first end of the body, and an inner pole which protrudes from a second end of the body and is electrically connected to the glow pin. A section of the inner pole that protrudes out of the body has an embossed structure for improving the mechanical and electrical connection to a plug connector. A method for producing a glow plug is also disclosed.

An embodiment of a torch igniter for a combustor of a gas turbine engine comprises a combustion chamber oriented about an axis, a cap defining an axially upstream end of the combustion chamber and oriented about the axis, a tip defining an axially downstream end of the combustion chamber, a structural wall coaxial with and surrounding the igniter wall, an outlet passage defined by the igniter wall within the tip, and a cooling system. The cooling system comprises an air inlet formed within the structural wall, a first flow path disposed between the structural wall and the igniter wall, and an aperture extending through the igniter wall transverse to the flow direction. The aperture directly fluidly connects the first flow path to the combustion chamber.

A glow plug having a rod-shaped heater including a resistance heating element; a tubular metallic shell; a rod-shaped inner shaft accommodated in the metallic shell and to which electric current is applied externally; and a conductive tubular member disposed inside the metallic shell. The tubular member has openings at its opposite ends. The rear end of the heater is press-fitted into one of the openings, and the front end portion of the inner shaft is inserted into the other opening, whereby the resistance heating element and the inner shaft are electrically connected. The heater includes an electrode terminal portion formed on the outer circumferential surface thereof. The tubular member includes an intermediate portion located between the one end and the other end and in contact with the electrode terminal portion, and the wall thickness at the one end is smaller than the wall thickness at the intermediate portion.

A ceramic heater of the invention includes a ceramic structure; a heat-generating resistor embedded in the ceramic structure; and a feeder line embedded in the ceramic structure so as to be connected, at one end thereof, to the heat-generating resistor. The feeder line is made of metal, and metal grains of a center region of the feeder line are greater in grain size than metal grains of an outer periphery region of the feeder line. Even if a crack developed in the outer periphery region of the feeder line propagates through grain boundaries in the outer periphery region and comes near the center region, propagation of the crack through the interior of the center region can be suppressed.

The present application relates to the technical field of electric heating devices for engines. Disclosed is a ceramic glow plug, comprising a housing and a heating element, the heating element being provided inside the housing, and a positive wire being connected to the top of the heating element, wherein the housing comprises an upper housing and a lower housing, both the positive wire and a negative wire pass through the upper housing, and the negative wire is connected to the heating element. The ceramic glow plug has the advantage of being resistant to electromagnetic interference.