387results about "Sparking plugs" patented technology

The invention discloses a gas spark switch coating electrode and a preparation method and application thereof, and belongs to the technical field of high-power pulse. The gas spark switch coating electrode comprises a gas spark switch metal electrode substrate and a surface composite graphite coating, the preparation method comprises the following steps: (1) performing injection on the surface of the gas spark switch metal electrode substrate to form the superficial nanometer strengthening layer; and (2) sequentially depositing an intermediate transition layer, an in-situ gradient growth composite layer and a titanium-doped graphite-like layer on the surface of the superficial nanometer strengthening layer, and periodically and repeatedly depositing to obtain the titanium-doped graphite-like composite layer. The gas spark switch coating electrode has excellent conductivity, ablation resistance and strong interface bonding performance, and can obtain an effective thickness of 10-20 [mu] m by regulating and controlling cycle repetition times, so that the gas spark switch coating electrode can show uniform ablation morphology and relatively low ablation loss under high-power, high-voltage and large-current breakdown test conditions; and a long-service-life electrode solution is provided for a high-pulse power device.

The purpose of the present invention is to provide a spark plug (10) configured so that a gasket (24) will not catch on a threaded part (16). This spark plug comprises: a main metal fitting (15) disposed on the outer periphery of an insulator (11) and extending along a center line (C) from the distal end to the proximal end; and a gasket positioned on the outer periphery of the main metal fitting. The main metal fitting includes: a threaded part (16) composed of a male thread centered on a center line; a head part (18) including a seat surface (17) provided toward the proximal end of the threaded part; and a neck part (19) disposed between the head part and the screw part. The neck part includes a flange part (20) protruding radially outward. The gasket is positioned between the head part and the flange part. An outer diameter (D3) of the flange part is lesser than an outer diameter (D2) of the threaded part, but larger than the minimum value of an inner diameter (D6) of the gasket.

Spark plug (1) for a hydrogen-powered internal combustion engine with a longitudinal axis X, comprising • a housing (2), • an insulator (3) arranged within the housing (2) • a central electrode (4) arranged within the insulator (3), • a ground electrode (5), • an ignition gap formed between the ground electrode (5) and the center electrode (4) within the housing, the housing having two opposite bores in which the ground electrode is arranged.

SOLUTION: A spark plug (1) having a longitudinal axis X, comprising: a housing (2) having a longitudinal bore parallel to the longitudinal axis X of the spark plug (1), whereby the housing (2) has a housing wall (20) and an internal space (21); an insulator (3) disposed inside the housing (2); a center electrode (4) disposed inside the insulator (3); and an overall length L MaEI and D MaEI a ground electrode (5) having a diameter of D Bohr The hole (50) in the housing wall (20) has a diameter of 1.5 mm, and the ground electrode (5) has a length L Bohr The ground electrode (5) is disposed in the hole (50) with a length L em The housing wall (20) projects from the inner surface (20a) of the housing wall (20) into the interior space (21) of the housing (2) with a thickness D Wall and a spark gap (45) formed between the ground electrode (5) and the center electrode (4), and a length L of the ground electrode (5) in the hole (50). Bohr The total length L of the ground electrode (5) MaEI is greater than or equal to 1.8 and less than or equal to 2.2, and / or the thickness L of the housing wall (20) Wall The length L of the ground electrode (5) projecting into the internal space (21) of the housing (2) relative to the em The ratio is greater than or equal to 0.2 and less than or equal to 3, and the length or thickness extends perpendicular to the major axis X of the spark plug (1).

To provide a spark plug that can extend time until a fusion part is exposed.SOLUTION: In a cross section of an electrode including an axial line and a center of gravity of a discharge surface of a chip in a spark plug, when the length in a direction orthogonal to the axial line of the discharge surface is D, the length of a line obtained by cutting the axial line by a border of the chip is L1, the length of a line whose distance from the axial line is D / 4 and that is obtained by cutting a first line parallel to the axial line by the border of the chip is L2, and the length of a line whose distance from the axial line is 3D / 8 and that is obtained by cutting a second line parallel to the axial line by the border of the chip is L3, the relation of L1<L2<L3 is satisfied.SELECTED DRAWING: Figure 2

The utility model relates to the technical field of spark plug detection, in particular to a spark plug detection device which comprises a base, a detection frame is fixedly connected to the right side of the top of the base, a transmission case is fixedly connected to the right side of the detection frame, and a visual camera is fixedly connected to the top of the detection frame. A limiting seat is fixedly connected to the middle of the top of the base, a connecting seat is arranged on the left side of the limiting seat, a control table is fixedly connected to the middle of the front side of the base, an inserting mechanism is arranged on the left side of the base, and a position correcting mechanism is arranged in the transmission box. According to the utility model, plug-in power supply and rotation correction of the spark plug are realized, and the convenience and high efficiency of the device are improved.

In certain embodiments, a significant improvement in H2-ICE performance can be achieved by a combination of active scavenging pre-combustion chamber technology and predictive model-based spark control to overcome the drawbacks of known combustion technologies. In certain embodiments, advanced combustion modeling and simulation of the ignition process, including spark events, arc movement and elongation, and resulting flame propagation, can be used to predict the relationship between spark energy / output, flow within the electrode gap, and flame growth (SOC) for different engines, different spark plugs, and various conditions. This information can be used to adjust the spark energy / output characteristics during the spark event of the same cycle in order to minimize SOC variations and significantly reduce the tendency of combustion anomalies such as backfire, knocking, and pre-ignition that prevent the achievement of high engine output density and efficiency.

A spark plug (38) includes: a spark plug housing (40); a cathode (62) including at least one electrode fork (64) and formed primarily of iridium; and an anode (72) formed at least predominantly of iron or steel. The material composition of the cathode and anode provides extended spark plug service life, especially in high power density applications employing pre-chamber spark plugs. Related methods are also disclosed.

Disclosed is a spark plug (1) having a longitudinal axis and comprising: • a housing (2) having a bore along the spark plug longitudinal axis and an end face (27) facing the combustion chamber; • an insulator (3) that is located at least in part within the housing (2), the insulator having an insulator base that extends from an insulator (3) end face facing the combustion chamber to an insulator base neck; • a central electrode (4) located at least in part within the insulator (3); and • at least one ground electrode (5) on the housing (2), the at least one ground electrode (5) and the central electrode (4) being arranged in such a way that the at least one ground electrode (5) forms a spark gap (54) along with the central electrode (4), a width of said spark gap (54) being defined by an inter-electrode distance between the central electrode (4) and the at least one ground electrode (5); • the inter-electrode distance between the central electrode (4) and the at least one ground electrode (5) is not greater than 0.4 mm, and the spark gap (54) is formed at least in part within the housing (2).

A gasket (20) configured to be positioned between a spark plug and a cylinder head of an internal combustion engine when a threaded section of the spark plug is screwed to the cylinder head. The gasket includes an annular body (23) and projections (25). The annular body is arranged around a threaded relief section of the spark plug where no threads are formed near the threaded section. Each of the projections extends radially inward from the annular body.The annular body, the thread relief section and the threaded section are shaped such that they satisfy a relationship of φb mm ≤ φa mm ≤ φc mm - 0.9 mm, where φa is an inner diameter of a circle (S1) defined to extend along the inner surfaces of the projecting ends (26a) of the inclined sections and centered on an annular center point (Cp) of the annular body, φb is the outer diameter of the thread relief section and φc is the nominal thread diameter of the threaded section.

The invention relates to the technical field of electric spark igniters, in particular to a micro-motion type gasoline engine electric spark igniter and a using method thereof.The micro-motion type gasoline engine electric spark igniter comprises a fixing sleeve and a threaded rotating rod rotationally arranged in the fixing sleeve, the end, extending to the upper side of the fixing sleeve, of the threaded rotating rod is fixedly connected with a check block, and the bottom end of the threaded rotating rod is fixedly connected with a lifting insertion block; a spark plug body is installed in the lifting insertion block, and an upper pole piece and a lower pole piece are arranged at the bottom end of the spark plug body. According to the micro-motion type gasoline engine electric spark igniter, due to the arrangement of the disassembling and assembling mechanism, when the spark plug body is disassembled and assembled, only the balancing weight needs to be pulled and rotated, disassembling and assembling are rapid and convenient, workers do not need to stretch into the spark plug body to disassemble the spark plug body, and efficiency is improved; and if the butt joint of the lower pole piece and the upper pole piece is seriously corroded, the discharging part of the lower pole piece can be automatically replaced, and during subsequent maintenance, a worker can quickly confirm the use condition of each spark plug body.

The present invention discloses an automotive ignition coil and its ignition controller, and the technical solution is as follows: An energy storage module is arranged on the main housing, and the energy storage module is electrically connected in parallel with the primary coil. When the primary coil is connected to a DC power supply, the energy storage module and the primary coil respectively store electric field energy and magnetic field energy synchronously. There is an inversion circuit electrically connected between the energy storage module and the primary coil. When the inversion circuit responds to the disconnection of the DC power supply and the primary coil, it connects the energy storage module and the primary coil to provide a reverse voltage that is reversely transmitted to the primary coil, and the magnitude of the reverse voltage is equal to the self-inductive voltage generated by the primary coil. Through energy storage components, the present invention realizes that when the coil is powered off, the self-inductive voltage generated by the inductance is offset by the reverse current voltage, thereby achieving the effect of quickly eliminating the magnetic field, realizing the instantaneous disappearance of the magnetic field in the primary coil, demagnetizing the iron core, and the magnetic force lines rapidly contracting and cutting the secondary coil to generate high voltage for ignition operation.

Spark plug for a spark-ignition engine. Spark plug (10) for a spark-ignition engine comprising: - a first electrode (1), - a second electrode (2), - a third electrode (13), - a fourth electrode (23), - a first inter-electrode gap (14) located between the first electrode (1) and the third electrode (13), - a second inter-electrode gap (24) located between the second electrode (2) and the fourth electrode (23), and - a base (8), particularly in the lower part of the spark plug, the third and fourth electrodes (13, 23) forming part of the base (8). Figure for the abbreviation: 1

A protection device against pulsed currents intended to transmit signals having frequencies lying in a transmission frequency band. The protection device has a signal conduction path and a shielding disposed around the signal conduction path. The signal conduction path has two spark gaps mounted in series and an inductor element linking a portion of the signal conduction path situated between the spark gaps. The inductor element is linked to the shielding. The protection device is configured as a high-pass filter allowing passage over the signal conduction path of the signals having frequencies lying within the transmission frequency band.

A spark plug (1) with a longitudinal axis X, having: - a housing (2) with a longitudinal bore, as a result of which the housing (2) has a housing wall (20) with an inner face (21), - an insulator (3), which is arranged within the housing (2) and has a combustion chamber-side insulator tip (30) which is flush with a plane E1 extending perpendicular to the longitudinal axis X, - a centre electrode (4), which is arranged at least partially within the insulator (3), and - an earth electrode (5), which is arranged within the housing (2), the earth electrode (5) and the centre electrode (4) being arranged such that they form a spark gap (55) and the spark gap (55) is within the housing (2), wherein the housing (2) has, at its combustion chamber-side end, a first inside diameter D1 and, within the housing (2) in the plane E1, a second inside diameter D2, the first diameter D1 being greater than the second diameter D2, so that a breathing space (50) formed within the housing (2) tapers from its combustion chamber-side end (51) to its combustion chamber-remote end (52).

The utility model discloses a spark plug and an internal combustion engine, and belongs to the technical field of spark plugs. The spark plug comprises a shell, a pipe assembly and an electrode assembly. The shell is provided with an accommodating cavity; the pipeline assembly comprises an air inlet pipe and an air outlet pipe. The containing cavity communicates with the air inlet pipe and the air outlet pipe. The electrode assembly is arranged in the containing cavity and comprises a first electrode and a second electrode, a through hole is formed in the second electrode, an internal thread is arranged on the hole wall of the through hole, the first electrode penetrates through the through hole, an external thread is arranged on the circumferential wall of the first electrode, and the rotating direction of the external thread is opposite to that of the internal thread; or, the hole wall of the through hole is provided with a plurality of convex parts which are arranged in an array, and the first electrode is arranged in the through hole in a penetrating manner. According to the spark plug provided by the invention, the number of the discharge points is multiplied, so that the probability of failure of the ignition function of the spark plug is reduced, the service life of the spark plug is prolonged, and the maintenance or replacement cost of the spark plug is reduced.

The invention provides a multi-mode ignition spark plug, a hydrogen engine ignition method and a related device, and relates to the field of engines, the multi-mode ignition spark plug comprises a first electrode and a second electrode; the first electrode is used for being matched with a ground level structure in the preheating chamber to achieve ignition, and the second electrode is used for being matched with a central electrode hole in the pre-combustion chamber to achieve ignition. The two ignition modes of ignition inside the pre-combustion chamber and ignition outside the pre-combustion chamber can be achieved only through one spark plug, and the cost of the engine and the complexity of the wiring environment of the engine are reduced.

The utility model relates to the technical field of spark plugs, in particular to a spark plug sleeve which comprises a round sleeve, a square sleeve and a square sleeve rod, the top of the round sleeve is connected with the square sleeve in a welded mode, the top of the square sleeve is connected with the square sleeve rod in a sleeved mode, and the top of the square sleeve rod is provided with a connecting assembly. An inner hexagonal groove is formed in the circular sleeve, a groove is formed in the position, located on the outer side of the inner hexagonal groove, in the circular sleeve, a clamping piece is rotationally connected into the groove, and the outer surface of the circular sleeve is in threaded connection with a tightening screw rod corresponding to the clamping piece through a reserved threaded hole; by additionally arranging the auxiliary caliber adjusting mechanism and utilizing overturning and extruding modes, the spark plug fixing device adapts to spark plugs of different sizes, the use flexibility is improved, meanwhile, the convenience of disassembly and assembly operation is improved, and therefore the use effect is improved.

The present disclosure provides a vacuum cleaner equipped with an electric shock module. The apparatus includes a suction body, a collection unit, a suction pipe set, an electric shock module, and a voltage boosting module. The suction body generates a negative pressure suction force by a motor or a fan. The collection unit is connected to the suction body and includes a collection inlet and a filtration system, and the filtration system is used to filter and collect the objects to be shocked and / or the inhaled substances. The suction pipe set has an air inlet and an air outlet, the air outlet is suction-connected to the collection inlet, forms a negative pressure in the suction pipe set, and the air inlet is used to actively generate a vacuum negative pressure between it and the adsorption surface in order to inhale air and the objects to be shocked and / or the inhaled substances. The electric shock module is disposed in the suction pipe set and can discharge at a high voltage to generate an arc spark. The voltage boosting module is electrically connected to the electric shock module and provides a high voltage to the electric shock module for discharging.

To provide a spark plug capable of improving ignitability while reducing wasting of a chip.SOLUTION: A spark plug comprises: an insulator that is provided with a shaft hole extending along an axis line; a central electrode that is arranged in the shaft hole; a main fitting that is arranged on the outer periphery of the insulator; and a grounding electrode that is connected to the main fitting. At least one of the central electrode and the grounding electrode includes a base material, and a chip that is joined to the base material and that consists primarily of Ru. The chip includes a discharge surface that faces the other one of the central electrode and the grounding electrode. An arithmetic average roughness of the discharge surface is in the range of 0.4-4.8 μm.SELECTED DRAWING: Figure 1

Arrangement of a spark plug (8) in a spark plug sleeve (6) made of a metallic material, the sleeve having a cylindrical receptacle (15) extending eccentrically to its outer mounting section for receiving an insulator body (7) of the spark plug (8), resulting in a wall section (17) of the spark plug sleeve (6) with a greater wall thickness, wherein a ground electrode (34) extending from the end face of the spark plug sleeve (6) is provided at a reduced-diameter end of the receptacle (15) and this ground electrode interacts with a central electrode (31) projecting axially beyond the insulator body (7) to generate a spark gap, wherein a fuel channel (14) extends within the wall section (17) with a greater wall thickness, the outlet of which is provided in the spark plug sleeve (6) adjacent to the spark gap, and wherein a check valve (22) is associated with the fuel channel (14), characterized in thatthat the check valve (22) is inserted into the fuel channel (14) from the outlet side and that a magnetically controlled metering valve is integrated into the spark plug sleeve (6) in conjunction with the check valve (22).

Spark plug, showing: a central electrode (10); a ground electrode (13) having a facing section (13A) which is facing a front end section (11) of the center electrode (10) and forms a discharge gap (SG) between the facing section (13A) and the front end section (11) of the center electrode (10); a cylindrical insulator (20) which receives the central electrode (10) therein, wherein the front end section (11) of the central electrode (10) is exposed from a front end of the insulator (20); a cylindrical metal housing (40) that accommodates the insulator (20) therein; and a cover part (50) which covers the front end section (11) of the center electrode (10) and the facing section (13A) of the ground electrode (13) from a front end side of the spark plug to form a pre-chamber (63), wherein the cover part (50) is connected to a front end of the metal housing (40) and has an injection opening (61) which is a through-hole, where a metal housing volume A (specified in mm²) 3 ) of a section of the metal housing (40) on the front end side with respect to a rear end (65) of the pre-chamber (63) and a thermal conductivity B (specified in W / mK) of the metal housing (40) at a normal temperature satisfy the relationship (1): 3.6 < A / B < 98.0 where the metal housing volume A (specified in mm²) 3 ) and a pre-chamber volume C (specified in mm³) 3 ) the antechamber (63) fulfill the relationship (2): 0.18 < C / A < 1.20

The utility model relates to a rocket engine ignition device comprising a spark plug and an exciter and a liquid rocket engine. The rocket engine ignition device comprises a first shell, an exciter low-voltage output cable, a connecting mechanism and a sealing mechanism. The spark plug is installed on the first shell, and the two ends of the spark plug are located inside and outside the first shell respectively. One end of the spark plug located outside the first shell is located in a combustion chamber of the rocket engine; the high-voltage end of the exciter is located in the first shell, one end of the exciter low-voltage output cable is located in the first shell and electrically connected with the high-voltage end of the exciter, and the other end of the exciter low-voltage output cable is electrically connected with the low-voltage end of the exciter. The high-voltage end of the exciter is electrically connected with the spark plug; the first shell is filled with insulating glue so as to carry out glue sealing on parts in the first shell. According to the utility model, condensed water can be prevented from entering between the spark plug and the exciter, outward electric leakage of the spark plug and the exciter is avoided, and the possibility of damage to the spark plug and the exciter is reduced.

The utility model discloses a passive pre-combustion chamber spark plug which comprises a pre-combustion chamber and an ignition gap structure arranged in the pre-combustion chamber. The pre-combustion chamber comprises a metal shell, an insulating ceramic body inserted into the metal shell and a pre-combustion chamber cap fixedly connected to the end, away from the insulating ceramic body, of the metal shell. Openings are formed in the two ends of the metal shell, the insulating ceramic body penetrates through the opening in one end, an ignition gap structure is fixedly connected to the end face, located in the metal shell, of the insulating ceramic body, and an interval is formed by the ignition gap structure and the pre-combustion chamber cap; and threads are formed on the outer surface of the metal shell. According to the invention, the integrated design is realized, the structure is compact, the ignition plug can be directly replaced with a conventional ignition plug, an engine cylinder cover does not need to be changed, and reliable ignition is realized.

Provided is a spark plug capable of reducing the occurrence of pre-ignition. The spark plug includes: an insulator provided with a shaft hole extending along an axis from a front end side to a rear end side, and a stepped portion having an outer diameter decreasing from the rear end side to the front end side; a center electrode disposed in the shaft hole; and a cylindrical main metal fitting disposed on the outer periphery of the insulator and having an inner peripheral surface, the main metal fitting including: a threaded portion comprising a male thread; a seat part including a seat surface provided on the rear end side of the threaded part; and a locking part which is provided on the inner peripheral surface and locks the stepped part. The relationship V / (R2 * L) < = 0.0170 is satisfied, where V (mm3) is the volume of a space inside the inner peripheral surface of the locking portion and excluding the center electrode and the insulator, R (mm) is the outer diameter of the threaded portion, and L (mm) is the distance from the tip of the main fitting to the seating surface.

A device for monitoring a life condition of a spark igniter in a gas turbine ignition system. The device includes an evaluation circuit having circuit components that include a hold capacitor, a transistor, and an operational amplifier arranged to form a sample-and- hold circuit, wherein an igniter spark impulse signal is applied to an input node of the evaluation circuit causing the transistor to turn on and the hold capacitor to discharge for a duration of the igniter spark impulse signal, and wherein a discharged voltage at the hold capacitor is maintained and output by the operational amplifier, the discharged voltage representing the duration of the igniter spark impulse and indicating the life condition of the spark igniter.

A prechamber sparkplug (40) includes a sparkplug housing (44) forming a prechamber (50), and an electrode (52) within the prechamber and defining a spark gap (54) with the sparkplug housing. The prechamber sparkplug further includes a valvular element (70) such as a check, a valve, or a tesla valve, structured to preferentially permit ejection of fluids from the prechamber over admission of fluids to the prechamber. Varying relative restriction of fluids into versus out of the prechamber can limit a charge density within the prechamber extending sparkplug service life, particularly in high power density engine applications. Related apparatus and methodology is also disclosed.

An igniter for a gas turbine engine includes a shell, an insulator secured within the shell, a center electrode secured within the insulator and electrically insulated from the shell by the insulator, the center electrode being formed from a platinum-iridium (PtIr) alloy and having a firing tip having a diameter of at least 0.09 inches, and a ground electrode attached to the shell and terminating at a firing end of the igniter spaced from the firing tip, the ground electrode having at least one pin comprising ruthenium (Ru) or a ruthenium alloy. The igniter is advantageously used with an ignition system having a positive polarity pulse output.

Spark plug for spark-ignition engine Spark plug (4) for spark-ignition engine (2) comprising an electrically insulating body (41), a base (42) delimiting a passive ignition pre-chamber (43), the spark plug (4) further comprising at least one orifice (45) arranged in the base (42) and at least one channel (46) configured to allow the circulation of a flow of drain air (FV) through at least part of the spark plug (4) and at least one means for regulation (47) of the flow of drain air (FV) arranged at the level of the at least one orifice (45) and capable to passively control the circulation of said flow.