217results about "Sparking plugs" patented technology

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).

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.

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 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.

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.

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.

An internal combustion engine comprising: at least one cylinder, in which a combustion chamber is formed, the combustion chamber being defined by a side wall of the cylinder, a combustion chamber roof 20 formed by a cylinder head of the cylinder, and a piston movable within the cylinder; and a spark plug having a longitudinal axis, the spark plug having a housing including an end face facing the combustion chamber, an insulator arranged in the housing, a central electrode arranged on the insulator, and at least one ground electrode arranged on the housing and forming at least one ignition gap together with the central electrode, wherein the spark plug is assembled in a hole formed in the cylinder head and is configured to ignite a fuel-air mixture present in the combustion chamber, the ignition gap of the spark plug being arranged outside the combustion chamber.

The utility model relates to the technical field of spark plug assembly, in particular to an anti-damage spark plug assembly tool which comprises a cylinder, a cavity is arranged in the cylinder, and a plurality of plates are distributed on the side wall of the cavity in an annular array mode. A movable rod is slidably connected to the interior of the vertical rod, and a rod body is fixedly connected to the upper end of the movable rod. In the process that the spark plug slides into the cavity, the porcelain insulation part of the spark plug makes contact with the inclined part of the lower end of the side wall of the plate, so that the plate part slides into the sliding groove, the plate shrunk into the sliding groove is popped out through elasticity of the first spring, and the multiple plates and the porcelain insulation part of the spark plug are clamped; the situation that the spark plug slides out from the interior of the cavity and is damaged when an operator installs the spark plug is avoided, meanwhile, the installed protection pad protects the porcelain insulation part of the spark plug, and the porcelain insulation part of the spark plug is prevented from being broken when the spark plug is installed.

An ignition system for an internal combustion system has a power source for passing a DC voltage, a push-pull isolating transformer connected to the power source so as to increase the voltage from the power source and convert the DC voltage to AC voltage, a high-voltage transformer having a primary winding connected to an output of the push-pull isolating transformer, and a spark plug connected to a secondary winding of the high-voltage transformer. The high-voltage transformer increases the voltage from the push-pull isolating transformer to a voltage that fires the spark plug.

The invention provides a spark plug abnormity judgment method and a parking heater, the spark plug abnormity judgment method is applied to the parking heater, the parking heater comprises a spark plug, and the method comprises the steps that current is provided for the spark plug to ignite when the parking heater is started, detecting a first resistance value of the spark plug; after the spark plug continuously works for a first duration, reducing the current, and detecting a second resistance value of the spark plug; and comparing the first resistance value with the second resistance value to determine whether the spark plug has abnormal ignition or not.

A method of detecting the breakdown voltage between the electrodes of a spark plug connected to an ignition coil for a cylinder ignition system, in an internal combustion engine, comprises a detection of an opening of the switch (105) on the primary winding (102) and a detection of a voltage on that primary winding (102), with the generation of a first signal (V1) representative of the voltage trend following the opening of the switch (105). The first signal (V1) is then integrated and, following an identification of a breakdown at the ends of the spark plug (106), a breakdown voltage value is determined as a function of the value of the integrated signal at the time of the breakdown.

The application discloses a multi-electrode continuous discharge spark discharge generating device, and relates to the field of aero-engine ignition. The spark discharge generating device comprises an ignition circuit and a multi-electrode spark plug. The multi-electrode spark plug comprises a metal shell and a plurality of central high-voltage electrodes arranged in the metal shell. The application matches the design parameters of the multi-electrode spark plug with the non-uniformity coefficient of the electric field in the ignition end face, and designs the ignition circuit, so that the maximum value of the delay difference between the breakdown time of two adjacent discharges is less than the arc duration time, the continuous discharge of the multiple electrodes is realized, the arc flame energy is higher, the contact area of the ignition arc and the mixed fuel is larger, the combustion in the combustion chamber is more uniform, the misfire rate of the spark plug is effectively reduced, and the operation reliability of the engine is improved.

A spark plug (1) includes: a fitting member (30a) having a cylindrical portion (30a); a center electrode (21) disposed in the cylindrical portion (30a); and a ground electrode (11) inserted into an opening portion (40) provided in the cylindrical portion (30a) and forming a gap between a front end portion in an extension direction of the ground electrode and the center electrode (21). A thread (37a) is provided on an outer peripheral surface of the cylindrical portion (30a). In a cross section of the cylindrical portion (30a), the opening portion (40) has an inclined portion (41) that gradually narrows from the outer peripheral surface of the cylindrical portion (30a) toward an inner peripheral surface side.

The utility model provides a spark plug matched with the ignition coil of big energy big voltage big current belongs to the technical field of spark plug, including thread cover, ceramic tube fixedly installed outside the thread cover, center electrode fixedly installed outside the ceramic tube, and first iridium gold electrode head fixedly installed at the inclined surface of center electrode, still include side electrode fixedly installed outside the ceramic tube, second iridium gold electrode head fixedly installed in the corresponding position of side electrode and first iridium gold electrode head of center electrode, electrode retainer ring fixedly installed outside the thread cover, the utility model discloses through the discharge plane design of sixty degrees promotes flame radial extension, makes the effective promotion of flame propagation speed, effectively strengthens the ignition performance, and iridium gold electrode head cooperation bending structure significantly reduces the flame elimination effect, reduces heat absorption, guarantees the temperature reduction of working time, and the electrode protection ring of additional can double protection iridium gold electrode in welding and working.

The invention relates to a spark plug (1) with a longitudinal axis X, having: - a housing (2) with a combustion chamber-side planar end face (21) which spans a plane E, and a thread (22) formed on its outer side (22), as a result of which a thread region is formed on the outer side of the housing (2), - an insulator (3), - a central electrode (4), - a ground electrode (5), - a spark gap (45) which is formed by the ground electrode (5) and the central electrode (4), wherein the combustion chamber-side planar end face (21) has a projection (25) which extends parallel to the longitudinal axis X of the spark plug (1) from the planar end face (21) in the direction of a combustion chamber, wherein a bore hole (20) with the diameter DB, in which the ground electrode (5) is arranged, is at least partially formed in the projection (25) and / or wherein a distance from the combustion chamber-side edge of the bore hole (20) to the combustion chamber-side end of the projection (25) is at least 0.5 mm.

Provided is a spark plug capable of improving stability when generating a flame kernel by discharge between electrodes. The spark plug includes: a center electrode including a base material, a tip made of a material different from the base material, a melting portion connecting the tip to the base material, and extending in an axial direction; and a ground electrode facing a discharge surface of the tip in the axial direction. In a projection view obtained by projecting in a direction perpendicular to the axial direction, an angle formed by a straight line connecting a first boundary between the tip and the melting portion at both ends of an outline of the melting portion and a second boundary between the melting portion and the base material and the discharge surface is set to θ, a distance in the axial direction between the first boundary and the discharge surface is set to A, and a distance in a perpendicular direction perpendicular to the axial direction between the first boundary and the second boundary is set to B, then 0 < A / B ≤ 1 and θ ≤ 70°.