Abstract: Process for operating a flame starting unit for an internal combustion engine, especially a diesel engine with flame glow plug (1), which is located in an air intake channel of the internal combustion engine and which is supplied with fuel via a fuel line (5). The fuel supply of flame glow plug (1) is metered depending on the respective operating phase of the internal combustion engine by there being valve (2) for controlling the amount of fuel in fuel line (5) for supplying flame glow plug (1), this valve being made especially as a clocked solenoid valve which is controlled via clock signals that have a frequency and/or length which are varied depending on which of a plurality of operating phases of the internal combustion engine is occurring.

Abstract: A rod-type flame glow plug, with a glow tube (5), an inner pole (7), a coil combination having at least one control and glow coil (4) located in series with an ignition coil (3.2) in the glow tube (5), the ignition coil (3.2) being located at the tip of glow tube (5), making in contact with the glow tube, avoids problems associated with nonuniform centering of the coils in the glow tube by the coil combination being located predominantly within a tubular component (1) made of a heat-resistant material. The inner surface of the tubular component (1) adjoins the coil combination, and the outer surface of the tubular component (1) adjoining the inner surface of glow plug (5).

Abstract: In a flame glow plug for a Diesel engine with an insert structure mounted on the plug body for the supply of fuel thereto, wherein the plug body includes in a vaporizing tube, a heating rod arranged in spaced relationship to the vaporizing tube such that an annular gap remains in which a vaporizing sieve is disposed and the heating rod extends axially beyond the vaporizing tube and is protected there by a flame tube firmly mounted on the plug and projecting into the intake airflow path when the glow plug is installed in an engine, the flame tube has circumferentially spaced air inlet openings and the vaporizing tube extends to the air inlet openings of the flame tube, the vaporizing tube further has a collar forming a narrow annular gap around the heating rod for supporting the vaporizing sieve and preventing flame backflashing through the gap and at least one row of openings arranged circumferentially below the collar.

Abstract: Glow plug with a heating rod formed of an inner pole (2) and a glow tube (5) in which there is heating element (3) which is electrically connected to the inner pole (2). At least in the area of its tip, the glow tube (5) is provided with a coating (7) of ceramic material, especially yttrium-stabilized zirconium dioxide which has a subsurface or adhesive layer (6) of NiCrAlY which is directly provided on the glow tube (5).

Abstract: Glow plug with a heating rod formed of an inner pole (2) and a glow tube (5), in which a heating element (3) is located which is electrically connected to the inner pole (2). The glow tube (5) is provided with protective coating (6) at least in the area of its tip. The protective coating is selected from the group consisting of materials which include NiCrAlY, CoCrAlY, CoNiCrAlY, NiCrAl, NiCr, NiCrFe and NiCrWCo.

Abstract: A circuit arrangement for flame detection for a transistor coil ignition system of a burner is disclosed. The transistor coil ignition system features a trigger stage which triggers a power transistor that is located in the power circuit of the primary winding of an ignition coil in order to charge the primary winding of the ignition coil with a charging current from a power supply. A circuit arrangement includes a switch having an ignition position and a flame detection position which in the flame detection position restricts the charging current flowing via the primary winding of the ignition coil to an intensity that lies below the charging current intensity needed to generate an ignition spark in the ignition position, so that ignition spark-over cannot take place without a flame.

Abstract: Glow plug with a metallic hollow body 1 in which a ceramic heating rod 2 is arranged such that it projects axially on one side of hollow body 1. The heating rod 2 is formed of a ceramic conductor 6 which is embedded in a ceramic insulator 7 and is connected to the power supply terminals, i.e., to ground via the metal of hollow body 1 and via a plug terminal 3. The contacts of the ceramic conductor 6 with the power supply terminals are formed by contact surfaces 8, 9 on the ceramic conductor 6, via which the conductor is in contact, on the one hand, with metallic hollow body 1, and with plug terminal 3, on the other hand. The contacts are preferably pressure loaded by generating a prestress between the components in contact. Preferably, metallic contact parts, for example, contact rings 10, 11, are provided at the contact points between the contact surfaces 8, 9 and the metallic hollow body 1 and plug terminal 3.

Abstract: A glow plug having an interior pole and a glow tube with a tip portion, a heating element located in the tip portion, and a regulating element, formed of an electrically conductive material having positive temperature-resistance coefficients, arranged in the glow tube. The interior pole of the glow plug is serially connected with the regulating element, the regulating element is serially connected to the heating element, and the heating element is serially connected with the glow tube tip in a construction for minimizing heat transfer between the regulating element and the interior pole.

Abstract: Spark plug with an insulator, a center electrode placed in the insulator, a casing provided on the outside off the insulator and a casing electrode attached to the casing. The center electrode and/or the casing electrode are made using a platinum-nickel fiber composite material consisting of a platinum matrix in which nickel fibers are embedded or of a nickel matrix in which platinum fibers are embedded.

Abstract: Silver-nickel composite for electrical contacts and electrodes, particularly intended for spark plug electrodes. In order to prevent corrosive attack to the nickel components, the silver component consists of a silver alloy which is impervious to oxygen, and the nickel component is comprised of nickel or of a nickel alloy. This facilitates the manufacture of contacts and electrodes which have a long service life.

Abstract: Rod flame glow plug for preheating the intake air of an autoignition internal combustion engine with a housing having a fuel connection with a metering device and an electric connection, and at least one heating rod located in the housing. The heating rod is formed of a glow tube (8) filled with an electrically insulative filling material (10) and at least one regulating coil (2) and a heating coil (1). The coils are embedded in the filling material (10) and are connected in series to one another and with the electric connection (9). The regulating coil (2) is formed of a CoFe alloy.

Abstract: Flame glow unit for heating the combustion air for a combustion device, especially an internal combustion engine. A flame glow plug, which is placed in the air duct of the combustion device, is supplied by a control device with current and fuel, and forms an ignitable air-fuel mixture together with the in-flowing air, which is ignited by a heating element provided in the flame glow plug. The resulting flame heats the air in the air duct. The air current in the air duct is measured by an air current measuring device and the control device controls the fuel supply of the flame glow plug in response to the measurements which the control device receives from the air current measuring device.

Abstract: Flame starting unit for a combustion device, especially an internal combustion engine, for preheating the combustion air. A flame glow plug is placed in the combustion air duct of the combustion device and is supplied with fuel and current by a control device. The functioning of the flame starting unit is monitored by a monitoring device, which displays occurring malfunctions.

Abstract: An incandescent plug for an air-compressing internal combustion engine, with a plug body (3), with a connector (5) for the application of electrical current and with an incandescent tube (2) which is attached to the plug body at one end is closed at its opposite end, and a wire filament-like resistance element (4) which embedded in an electrically insulating material (7) in the incandescent tube (2), is able to be heated with lower electrical output by the wire filament-shaped resistance element (4) being confined within the region of the opposite end of the incandescent tube which is remote from the plug body (3).

Abstract: A sheathed-element glow plug has a front resistance heating filament connected in series with a rear resistance regulating filament having a higher positive temperature coefficient (PTC) than the front filament. The rear filament is made of cobalt/iron alloy consisting of 44-80% by weight cobalt, 20-35% by weight iron, up to 1% miscellaneous components and nickel, if present, in an amount of 0 to less than 15% by weight. The alloy has a resistance ratio (20.degree.-1000.degree. C.) which is no more than approximately 7.5 in the range from about 100.degree. C. to between about 400.degree. C. to about 600.degree. C., and which ratio rises sharply to values from 7.5 to greater thin 12 in the range from 400.degree. C. to 600.degree. C. to about 900.degree. C.

Abstract: A glow plug for an air compressing internal combustion engine of the type having a tube which is closed at one end and connected to a plug housing on an opposite end with a wire filemant-like resistance element disposed in an insulating material within the tube and formed two series-connected resistance filaments, of which the rear resistance filament, serves as a regulating filament, having a higher positive temperature resistance coefficient than the front resistance filament, which serves as a heating filament, is improved so as to enable the heating up time to be reduced without adversely impacting upon the effective life of the glow plug. In accordance with various embodiments, this result is achieved through the use of, for example, special alloys for the material of the regulating filament which have a resitance at 1000.degree. C. that is greater than their resistance at 20.degree. C. by a resistance ratio over about 7.5:1, and preferably greater than 12:1, and in particular, about 14:1.

Abstract: In a spark plug with combined surface and air spark paths comprising a center electrode, and insulator which surrounds the center electrode and which, at least in the end region of the center electrode, maintains a gap with respect thereto, and a ground electrode which, together with the spark plug body, surrounds the insulator and which at least in the end region of the insulator maintains a gap with respect thereto, the insulator, to form a discharge chamber surrounding the end portion of the center electrode, extends in the axial direction of the plug beyond the center electrode, and the ground electrode encompasses the insulator around the end thereof with an extension of the ground electrode extending into the discharge chamber with a clearance gap being maintained between the extension and the end portion of the insulator.

Abstract: In a spark plug with center electrode and body electrode in which the cylindrical center electrode comprises in its end face a blind bore in which a pin-shaped small-volume noble metal insert is inserted and fixed by upsetting, it is provided that the front region (1a) of the center electrode (1), provided with end-side bore (2) and insert (3) disposed therein, is reduced radially over almost the entire length of the bore (2), the reduced region (1a) having a constant diameter, and that a further pin-shaped small-volume noble metal insert (5) is fixed in a bore (4) formed coaxially with the bore (2) in the body electrode (6). The production of the spark plug can proceed from commercially usual spark plug parts made on conventional production machines; the noble metal insert of the spark plug is securely attached in the center electrode and the body electrode part opposite the noble metal insert has a reduced burnup, thus increasing the life of the spark plug.

Abstract: In a spark plug connector for a high-voltage distributor-less high-voltage capacitor ignition system, comprising an ignition transformer and a storage capacitor connected on the secondary side to the ignition transformer, the spark plug connector is made rod-shaped with diameter dimensions corresponding to those of a spark plug and contains the storage capacitor and ignition transformer arranged one behind the other, the ignition transformer being disposed at the end of the spark plug connector remote from the spark plug connection.

Abstract: In a glow element with a glow tube (30) closed at the outer end, in which there at least two series-connected resistors (10, 11), whereby one of the at least two resistors being conductively connected by one end to the closed end of the glow tube and the opposite end of the series-connected resistors being connected to an internal pole (9) projecting into the glow tube from the other end thereof, in order to permit an external wiring of part of the resistors in the glow element, the internal pole (9) has a tubular construction and at least one electrical conductor (8) is passed through the internal pole and is connected to a junction (12) of the at least two resistors (10, 11).