89 results about "Glow plug" patented technology

A method and a device for detecting the exchange of sheathed-element glow plugs (GPE) in a combustion engine, in which at least one electric characteristic quantity of at least one glow plug is measured at the beginning of a driving cycle, an instantaneous value of this characteristic quantity is determined and compared to at least one stored value of the same electric variable quantity of this glow plug, which was determined at the beginning of at least one preceding driving cycle, and if the deviation of the instantaneous value from the stored value exceeds a specifiable threshold value, an exchange of the glow plug (GPE) will be inferred.

There is disclosed an igniter for a gas turbine engine including: a base; a glow plug heater rod extending from the base along an axis and terminating in a rod end; and a fuel receiver adjacent the heater rod, the fuel receiver including a portion located closest to the heater rod, the rod end protruding axially relative to the axis from the fuel receiver portion located closest to the heater rod.

A device and a method for controlling at least one glow plug of a motor vehicle are described. The at least one glow plug is controlled as a function of the operating state of the internal combustion engine. In this case, the control is effected as a function of a variable which depends on the exhaust gas temperature and/or as a function of the fulfillment of a fuel quantity condition and/or time condition.

An autonomous glow driver system for radio controlled (RC) engines. Aspects of the system include a connector that securely attaches to the glow plug to maintain good electrical contact with the glow plug and reduce signal noise and using a current and differential amplifiers to determine the temperature of the glow element and the RPMs of the glow engine from a voltage signal (obtained via the connector) that varies with the temperature as induced changes in the resistance of the glow element occur. Using the data of temperature, non-running RPM, and running RPM to control operation of the glow driver leads to a very reliable approach to automatically activating the glow driver to maintain the combustion chamber temperature of the glow engine at a selected level because RPM is indicative of a rotating engine whereas temperature is not.

A method for reducing the temperature tolerance of sheathed-element glow plugs is described, in which, in a first step, the sheathed-element glow plugs of an auto-ignition internal combustion engine are classified into at least two temperature classes, at least one temperature class including a temperature range above a setpoint temperature range, at least one temperature class including a temperature range below the setpoint temperature range, and/or one temperature class including the setpoint temperature range. In a second step, the control voltage of sheathed-element glow plugs which were assigned to a temperature class which includes a temperature range above the setpoint temperature range is reduced, and the control voltage of sheathed-element glow plugs which were assigned to a temperature class which includes a temperature range below the setpoint temperature range is increased. A device for performing the method is also described.

The present disclosure relates to combusting fuel during cold start. A glow-plug may be provided within a combustion chamber having a volume including a piston, wherein the glow plug may provide a localized heated region. Air may then be provided into the chamber and compressed. A mass of fuel may also be provided into the combustion chamber, wherein an amount of the fuel mass may be directed towards the localized heated region of the glow plug, wherein the heated region of the glow plug may have a temperature T₁, and the equivalence ratio of the fuel in the heated region achieves a value that the temperature T₁ provides auto-ignition. All or a portion of the mass of fuel directed towards the heated region of said glow plug may be ignited, and then the remainder of the fuel may be ignited by auto-ignition and/or flame propagation.

A glow plug (1) including a heater (2), a metallic shell (4) assuming the form of a tube having an axial bore, a center shaft (3) and a contact member (7). The contact member (7) is configured such that a contour (70) of a cross section (75) includes a second contour segment (71) in the form of a straight line, a first contour segment (72) in the form of a curve swelling radially, and third contour segments (73) in the form of curves connecting the second contour segment (71) and the first contour segment (72).

The invention relates to a cold-start and small-load combustion control system and method for a low-temperature combustion engine. The cold-start and small-load combustion control method for the low-temperature combustion engine comprises the steps that a control system which comprises cylinder pressure detection glow plugs, oil nozzles, common rail systems, batteries, engine electric-control units, glow plug control units and combustion state analysis units which are arranged in four air cylinders of an internal combustion engine correspondingly is arranged; the operating state information of the engine is detected, and the operating state information includes the temperature of the engine, the temperature of cooling liquid, the air inlet temperature, the air inlet pressure, the rotating speed of the engine, the torque of the engine, the torque required by a driver and the environment temperature and pressure; whether the engine is in a cold-start state or not currently is judged, and cold-start control is conducted if it is judged that the engine is in a cold-start state; the next step is executed if the engine is not in the cold-start state; whether the engine is under a small load working condition or not is judged, and small-load combustion assisting control is conducted if the engine is under the small load working condition; and otherwise, heating through the glow plugs and intervention of a low-pressure spraying method are not needed. The cold-start and small-load combustion control system and method for the low-temperature combustion engine can be widely applied to various electric-control diesel engines and electric-control gasoline engines.

In a method for detecting a replacement of sheathed-element glow plugs in an internal combustion engine, an electrical parameter of the sheathed-element glow plug is determined during a driving cycle and is compared with a stored value of the same electrical parameter of the sheathed-element glow plug that was determined in a preceding driving cycle. In the driving cycle, the same electrical parameter is determined for all sheathed-element glow plugs installed in the internal combustion engine, and the determined pattern of the electrical parameter is compared with a pattern that was ascertained in a preceding driving cycle, a replacement of a sheathed-element glow plug being detected if the pattern of the driving cycle deviates from a pattern of the preceding driving cycle.

There is disclosed an igniter for a gas turbine engine including: a base, a glow plug heater rod extending from the base along an axis and terminating in a rod end, a sleeve extending circumferentially around the glow plug heater rod along at least a portion of a length of the glow plug heater rod, the igniter having a ventilation path extending from an inlet to an outlet, the inlet fluidly connectable to a spacing located between a casing and a combustor liner of the gas turbine engine, the outlet extending circumferentially around the glow plug heater rod and oriented axially relative to the axis, the outlet fluidly connectable to a combustion chamber of the gas turbine engine delimited by the combustor liner.

Disclosed is a glow plug comprising a sheathed element (14) which is accommodated in a metallic housing. The sheathed element comprises a glow tube (16) and a coiled element (18) arranged in the glow tube (16), wherein one end of the coiled element is in electrical contact with the glow tube and the other end is in electrical contact with a connecting pin (17). The connecting pin protrudes into an axial opening (22) of the glow tube where the connecting pin is connected in a sealing section (23) to the glow tube in an electrically insulating manner by means of a heating body seal. An electric insulating layer (33) is formed at least in the sealing section on the glow tube and/or the connecting pin. In order to provide a heating body seal, the glow tube is pressed in the region of the electric insulating layer onto the connecting pin.

A sheathed-element glow plug for an internal combustion engine, made up substantially of a plug housing and a glow element disposed in the plug housing, having a gas conduit for measuring the combustion chamber pressure. A gas-permeable filter element, provided according to the present invention in the gas conduit, prevents the penetration of carbon residues or combustion residues into the interior of the sheathed-element glow plug, or reduces particle entry to a tolerable level.

The invention relates to a fuel injection valve (1) comprising a valve body (5), in which a pressure chamber (7) is designed which, at one end, is delimited by a conical valve seat (13) to which a blind hole (14) connects. A valve needle (10) is arranged longitudinally displaceably in the pressure chamber (7), a valve sealing face (12) of the needle cooperating with the conical valve seat (13) to control a fuel flow from the pressure chamber (7) to injection openings (15; 115; 215) designed in the valve body (5), wherein a valve needle tip (18) of the valve needle (10) protrudes in the blind hole (14) when the needle is seated against the valve seat (13).; The inlet opening (216) of an injection opening (215) is arranged downstream of the valve needle tip (18) in the blind hole (14) and the inlet openings (116) of the remaining injection holes (115) are arranged downstream of the valve needle tip (18) when the valve needle (10) is seated against the valve seat (13). An internal combustion engine comprising such a fuel injection valve (1) and a pencil-type glow plug (35) is designed such the fuel exiting the downstream injection opening (215) forms a pilot injection which is directed to or in the direct vicinity of the pencil-type glow plug (35). Because of the position of this injection opening, fuel is ejected in the direction of the pencil-type glow plug even when the valve needle is offset and even with small needle strokes.

The invention discloses an engine with a pre-combustion chamber and a working mode of the engine, and relates to the technical field of engines. The engine with the pre-combustion chamber comprises an engine body, wherein the engine body is provided with the pre-combustion chamber, the pre-combustion chamber is communicated with a main combustion chamber of the engine body through a connecting channel, the pre-combustion chamber is provided with an auxiliary oil injector, a first spark plug and a glow plug, the main combustion chamber is provided with a main oil injector and a second spark plug, the first spark plug and the glow plug are used for igniting an oil-gas mixture in the pre-combustion chamber, the auxiliary oil injector is used for injecting oil into the pre-combustion chamber, the main oil injector is used for injecting the oil into the main combustion chamber, and the second spark plug is used for igniting the oil-gas mixture in the main combustion chamber. According to the engine with the pre-combustion chamber, the pre-combustion chamber, the main oil injector, the auxiliary oil injector, the first sparking plug and the second sparking plug are arranged on an air cylinder cover, ignition can be achieved when the concentration of mixed gas in the engine is any concentration, switching of working modes under different mixed gas concentrations is flexibly achieved, and the operation requirements of the engine under various working conditions are met.

There are described methods and systems for operating a glow plug. The method comprises monitoring a glow plug current; applying a nominal voltage V_N to the glow plug when the glow plug current is between an upper threshold I₁ and a lower threshold I₂<I₁; applying a voltage V_H>V_N to the glow plug when the glow plug current exceeds the upper threshold I₁; and applying substantially no voltage to the glow plug when the glow plug current falls below the lower threshold I₂.

The invention relates to the technical field of ignition systems for turbojet engines, in particular to an ignition system for an afterburner, and solves the problems that ignition systems and oil waysystems of the afterburners of small and medium-sized turbojet engines are complex and the engine thrust-weight ratio is insufficient in the prior art. The ignition system comprises an ignition oil way system, wherein the ignition oil way system comprises an oil pump; the oil pump is respectively connected to an ignition device and an afterburner fuel manifold through a pipeline; the ignition device comprises a shell; an electric heating plug is arranged in the shell; a cable is arranged above the electric heating plug; an afterburner ignition oil pipe is arranged on the shell and is connected to the pipeline; a fuel circuit is formed by a circular seam between the electric heating plug and the inner wall of the shell; and the fuel circuit communicates with the afterburner ignition oil pipe. According to the ignition system, only two oil ways are arranged, the design of the oil way system is simpler, and the engine thrust-weight ratio can be improved by improving the ignition device and the oil way system.