Abstract: A sheathed-element glow plug for disposition in the combustion chamber of air-compressing internal combustion engines is proposed which in a known manner contains a resistor element (17) in its sheathed-element (13), where this resistor element (17) is composed of two serially connected resistor spirals (20, 21). While the resistor spiral (20) on the combustion chamber side is a heater spiral with a resistance behavior which is essentially the same at all operating temperatures, the wirespiral shaped resistance spiral (21) on the side remote from the combustion chamber which acts as a regulating element, has a high temperature resistance coefficient.

Abstract: An injection nozzle provided with an inductive needle movement sensor is constructed in such a way that a coil winding of the sensor is faultlessly sealed against overflow oil without more space being required for the needle movement sensor than is required in a construction without a sealing of the coil winding against overflow oil. For this purpose, a coil core of the induction coil is lengthened into a lengthened portion of the chamber in a short-circuit body of the sensor, which chamber receives an induction coil, and a sealing ring seals the coil winding against a guide gap of the magneto armature in the short-circuit body. An annular gap between the short-circuit body and a bore hole wall in a nozzle holder receiving is sealed by means of a sealing ring. A clamping flange connected with the coil core directly contacts an adjacent annular flange of the coil body and the coil winding contacts connection wires on the other side of a clamping flange.

Abstract: A system for injecting fuel into the combustion chambers of an internal combustion engine, comprising an injection nozzle and a glow coil which is connected downstream and is enclosed by a sleeve. The sleeve contacts one end of the glow coil on the combustion chamber side and is connected with a current lead. The other end of the glow coil is grounded via a contact ring body, a heat protecting ring and the nozzle body of the injection mozzle. This arrangement has the advantage that an insulation of the contact ring body relative to the heat protection ring is dispensed with and the latter can be supported immediately at the contact ring body.

Abstract: A fuel injection nozzle for internal combustion engines includes a glow element connected to the outlet side of the injection port, the glow element being integrated into the clamping nut which braces the nozzle body with the nozzle holder. Downstream of the nozzle body, the clamping nut has a support shoulder, on which a sleeve surrounding and carrying the glow element rests. The glow element is formed by a jacket heating conductor, shaped into a dimensionally stable coil which is electrically connected with the contact element and with the sleeve. The connection end of the jacket heating conductor may be formed as a so-called cold end, as a result of which the adjoining parts are thermally relieved.

Abstract: A device for injecting fuel into a combustion chamber of an internal combustion engine, having a glow coil (22, 92) disposed on the outlet side of the injection nozzle and increasing in size conically toward the combustion chamber; the coil is surrounded by a sleeve (30, 96) which firmly holds the end turn (88, 93) of the glow coil (22, 92) toward the combustion chamber and has a contact ring washer (46, 98), on which the other end turn (86, 94) of the glow coil (22, 92) is secured. The end turn (88, 93) toward the combustion chamber rests on an annular shoulder (90, 107), oriented according to the invention toward the combustion chamber, of the sleeve (30, 96), which surrounds an insertion opening (91, 106) the inside diameter of which is smaller than the outside diameter of the end turn (88, 93) toward the combustion chamber, but greater than the outside diameters of all the other turns of the glow element (22, 92).

Abstract: A device for injecting fuel into a combustion chamber of an internal combustion engine, includes a glow element connected to the outlet side of an injection nozzle and having the form of a coil that widens conically toward the combustion chamber. The coil is manufactured from a flat strip, which is cut out in the form of a spiral from a flat sheet-metal element by laser cutting or for instance by an etching process and subsequently is pulled apart axially to form the coil. This facilitates the electrical contacting of the glow element and has the further advantage that the glow element can also be manufactured from special materials of the kind that are obtainable only in the form of flat plates or strips.

Abstract: Fuel-injection jet for internal combustion engines, with a needle movement sensor which is provided with an induction coil (30) with a coil core (36), an anchor bolt (38) being connected with the valve needle (18), a magnetic inference element (25) encompassing the induction coil (30) on the outside and two two feeding wires (40,42) which are fed out of the jet support (10) through a cable conduit (90). In accordance with the invention the cable conduit (90) consists of a central conduit segment (90) coaxially mounted with respect to the induction coil (90) and two subsequent bores (94,96) in a truncated angle (a) which discharge in the jacket circumference of jet support (10). The feeding wires (40,42) are fed in the area of the central conduit segment (92) through a cable feeding element (44). With this arrangement the needle movement sensor can be easily inserted as a premade structural unit into jet support (10).

Abstract: A fuel injection nozzle is proposed in which the wrench hexagon of the nozzle holder, in order to reduce the structural length, is arranged to surround the spring chamber and the leakage oil connection is placed in this area of material reinforcement.

Abstract: The invention relates to a fuel injection nozzle for internal combustion engines, in which a damping piston is located on the end of the valve needle, which valve needle opens in the flow direction, remote from the injection side. The damping piston cooperates with a cap that is mounted on the damping piston and spring-loaded in the direction of opening, and the cap and the damping piston define a damping chamber. A support ring which is stressed in a positively engaged manner by the closing spring of the injection nozzle is disposed on the valve needle. In the spatial segment between the damping chamber and the support ring, an encapsulated induction coil attached to a tubular segment surrounds the valve needle, and the support ring serves as the armature of a transducer embodied by the injection coil and at least one part, serving as the yoke of the encapsulation.

Abstract: A fuel injection nozzle for internal combustion engines is proposed, having a valve needle and an induction coil, the armature of which is coupled with the valve needle and which serves to emit signals depending on the needle stroke or needle speed for a measuring device which can be connected to the injection nozzle. The induction coil is associated with a coil core, which is disposed such that it is displaceable in the axial direction in such a manner that a predetermined value for the initial inductance of the induction coil can be adjusted independently of the tolerances of the individual structural parts of the injection nozzle.