242results about "Ignition sparking plugs" patented technology

A precombustion chamber igniter with a retractable electric glow plug and a cold start control method for a methanol engine are provided. The precombustion chamber igniter includes a fuel injector, a spark plug, and an electric glow plug. The electric glow plug is retractable and has two working positions, at a first position, a heating segment is wholly located in an injection chamber to provide heat energy for the injection chamber, and at a second position, the heating segment is partially located in the injection chamber and passes through a first through hole, and the rest of the heating segment is located in a main combustion chamber of an engine, to provide heat energy for the injection chamber and the main combustion chamber. In a cold start stage of the engine, the heating segment of the electric glow plug is controlled to be located at the second position.

To provide a sealing system for sealing two components, which enables pressure relief in a region between the two components, a valve arrangement (100) is proposed, comprising a first component (11) with a cylindrical section (17) and a second component (12) with a cylindrical receiving chamber (18) in which the first component (11) is arranged, and comprising at least one valve element (10) which is arranged along a circumference of the first component (11) and seals a first region (14) and a second region (15) of the receiving chamber (18) from each other in a sealing position of the valve element (10), wherein the valve element (10) has a sealing element (13) which is elastically designed such that when a predetermined pressure in the first region (14) is exceeded, the sealing element (13) is moved into an opening position in which the first region (14) is open towards the second region (15).

Invention relates to a fuel ignitor (10) for gaseous fuel comprising a body assembly (12) having a longitudinal axis (A), and a first axial end and a second axial end. The ignitor body assembly (12) comprises a. a prechamber (20) arranged at the first axial end and having a tip, and more than two jet openings (22) arranged to the tip of prechamber (20) at the first axial end, b. a fuel inlet (26) arranged to open into the prechamber (20), c. first cavity (28) arranged to extend from the second axial end of the body assembly (12) to proximity to the prechamber (20), wherein a solenoid actuated gas admission valve unit (29) is arranged in the first cavity (28), d. second cavity arranged to extend from the second axial end of the body assembly (12) to the prechamber (20), wherein an ignition device (31) is arranged in the second cavity in cooperation with the prechamber (20) so as to initiate combustion of fuel in the prechamber (20), when in use, e. cooling channels (32) arranged at the first axial end of the ignitor body assembly (12) arranged in heat transfer connection with the prechamber (20). Invention relates also to a cylinder head - fuel ignitor combination, a gas operated internal combustion engine and method of converting an existing internal combustion piston engine.

An ignition method is provided for an internal combustion engine having an engine cylinder and a remote ignition chamber in fluid communication with the main combustion chamber via a tubing assembly. The remote ignition chamber and tube are charged with a first combustible charge gas. The main combustion chamber is charged with a second combustible charge gas. A plurality of high-voltage electrodes arranged along the tube are used to pretreat the first combustible charge gas to generate radicals therein. The pretreated first combustible charge gas is ignited to produce a deflagration flame. A plurality of high-energy discharge sparkplugs arranged along the tube are used to sense a property of the deflagration flame. When the sensed property of the deflagration flame is within predetermined threshold limits, at least one of the high-energy discharge sparkplugs is used to provide a transient high energy spark to the deflagration flame to stimulate deflagration-to-detonation transition.

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate different aspects of an ignition system and provide continuous feedback. The ignition coil assembly may be a coil-on-plug type device that converts low-voltage battery power into high-voltage ignition pulses, and may include several input terminals, an ignition coil with primary and secondary windings, ignition circuitry, an output terminal, a spark plug connector, and a housing. The ignition circuitry includes an ignition operational circuit and an ignition diagnostic circuit, which in turn has a charging evaluation circuit for monitoring a charging phase, a discharging evaluation circuit for monitoring a discharging phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal that can then be sent to an engine control unit (ECU) or the like over a single output terminal.

The utility model belongs to the technical field of motorcycle parts, and discloses a mechanical motorcycle flameout switch structure which comprises a shell, a fixing presser foot is arranged on the inner wall of the bottom end of the shell through a positioning bolt, a wire welding plate is arranged on the outer wall of the fixing presser foot, a fixing block is arranged on the outer wall of the wire welding plate through a reinforcing bolt, and the fixing block is arranged on the outer wall of the fixing presser foot. A gasket is in contact with the outer wall of the reinforcing bolt, a flameout button is rotationally connected to the outer wall of the fixing block, a locking mechanism is arranged on the inner wall of the flameout button, a guide telescopic rod is fixedly connected to the inner wall of the flameout button, and a positioning ball is elastically connected to the inner wall of the flameout button through a reset spring A. Through the arrangement of the flameout button, the operation of speed reduction, braking and flameout can be rapidly completed, and under the arrangement of the locking mechanism, the problem of starting and stopping of the flameout switch caused by mistaken touch can be effectively avoided, and the problem of accidents caused by mistaken touch in the driving process is avoided.

To prevent backfire of an engine due to unintended discharging in an ignition plug at low cost, without generating a positive voltage during ignition coil charging, in a spark ignition hydrogen engine.SOLUTION: A control device of a spark ignition hydrogen engine sends, to an igniter of an ignition device, a main discharge ignition signal to ignite hydrogen mixture, and an auxiliary discharge ignition signal to reduce an open-circuit voltage of a secondary coil during an intake stroke compared to an open-circuit voltage at the end of main discharge. Therefore, it is possible to set the open-circuit voltage during the intake stroke to the minimum value of a breakdown voltage in the spark ignition hydrogen engine to prevent backfire of the engine.SELECTED DRAWING: Figure 8

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.

To provide a cylinder heater capable of easily securing an installation place of an electrode for causing an electric current to flow in a cylinder liner.SOLUTION: A cylinder heater includes: an electric power conversion device that converts a DC electric current output from a DC power source into a high-frequency AC electric current; and a transformer having a primary side coil electrically connected to the electric power conversion device and a secondary side coil electrically connected to electrodes provided to correspond to one side and the other side of a cylinder liner, respectively in an axial direction of a cylinder of a cylinder block provided in an internal combustion engine. In the cylinder heater, the electrode on one side is electrically connected to a lower part of the cylinder block and the electrode on the other side is a grounding electrode of an ignition plug.SELECTED DRAWING: Figure 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.

To provide an ignition coil having an improved assemblability and abrasion resistance while maintaining insertability of a joint part and suppressing shaft deviation, when installed to a bent-shaped plug hole.SOLUTION: An ignition coil includes a joint part made of a cylindrical elastic body which is bendable and deformable, with a tip end side attached to an ignition plug arranged at a plug hole having a bent part and with a base end side attached to a coil body part arranged at a base end inlet part having a large inner diameter than the bent part. The joint part has a plurality of first ribs extending along an axial line L provided on an outer peripheral surface of a body cylindrical part facing the bent part, and has a plurality of second ribs extending along the axial line provided on an outer peripheral surface of a base end cylindrical part positioned on the base end side. When viewed in a direction along the axial line, a maximum diameter of the first rib diameter represented by a diameter of a virtual circumscription circle that circumscribes with tip ends of the plurality of first ribs of the body cylindrical part is smaller than a maximum diameter of the second rib diameter represented by a diameter of a virtual circumscription circle connecting tip ends of the plurality of second ribs of the base end cylindrical part.SELECTED DRAWING: Figure 1

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 utility model discloses a natural gas engine cylinder cover spark plug sheath structure which comprises a cylinder cover, the cylinder cover is composed of a cylinder cover bottom plate, a spark plug installation boss and an installation hole, the natural gas engine cylinder cover spark plug sheath structure further comprises a spark plug, a sealing washer, a spark plug sheath and a water jacket, and the cylinder cover bottom plate and the spark plug installation boss are integrally formed and cast. The mounting hole is composed of a threaded part and an unthreaded hole part, the spark plug is connected with the spark plug sheath, the spark plug is in threaded connection with the mounting hole, and the spark plug sheath is connected with the mounting hole through the sealing washer. The cylinder cover bottom plate and the spark plug installation boss are integrally formed and cast and are made of vermicular iron, the heat conduction capacity and the ductility are high, heat of the cylinder cover bottom plate can be rapidly conducted out and taken away through cooling water, the temperature of the cylinder cover bottom plate is lowered, and the high-temperature cracking fault is reduced.

An engine system (S) includes an internal combustion engine (1) and a control unit (100). The internal combustion engine includes: a main chamber (5) defined by a piston (2), a cylinder (3), and a cylinder head (4); a spark plug (10) mounted on the cylinder head; a secondary chamber tube (11) surrounding the spark plug and protruding downward from the cylinder head; a secondary chamber hole (17) formed in the piston and capable of receiving the secondary chamber tube; and an injector (9) for injecting fuel supplied into the main chamber. The control unit ignites the spark plug when the secondary chamber tube is inserted into the secondary chamber hole, and injects fuel from the injector before the spark plug is ignited and before the secondary chamber tube is inserted into the secondary chamber hole.

An ignition system (10) including an injection member (20) configured to deliver fuel to an ignition zone (140) within a combustion chamber, an ignition element (40) configured to ignite fuel within the ignition zone, and a control unit (60) configured to operate the injection member and the ignition element in a first ignition phase including ignition of a first delivery of fuel provided to the combustion chamber by the injection member and a second ignition phase including ignition of a second delivery of fuel provided to the combustion chamber by the injection member.

An ignition coil includes a joint part that is formed of a tubular elastic body. The join part has a distal end mounted to an ignition plug arranged in a plug hole having a bend, and a proximal end mounted to a coil main body part arranged at a proximal-side entrance part of the plug hole which has a greater inner diameter than the bend. On an outer circumferential surface of a main tubular portion opposed to the bend, there are formed first ribs each extending along an axis of the joint part. On an outer circumferential surface of a proximal-side tubular portion, there are formed second ribs each extending along the axis of the joint part. When viewed along the axis of the joint part, a maximum value of a first rib diameter and a maximum value of a second rib diameter satisfy the relationship of d2 > d1.

An engine ignition system, an ignition method, an engine, a vehicle and a transport, relating to the technical field of vehicle parts. The ignition system comprises: an ignition member, the ignition member being suitable to be mounted in a combustion chamber of an engine; and a heating device, the heating device being connected to the ignition member and used for heating the ignition member to a set temperature, so that fuel sprayed into the combustion chamber is heated and combusted, the set temperature being greater than or equal to the auto-ignition temperature of the fuel in the combustion chamber.

To provide an engine capable of reducing deflection of a fuel to a downstream side in a gas flowing direction in a main chamber.SOLUTION: An engine includes: a piston; a cylinder block provided with a cylinder in which the piston is reciprocated; a cylinder head fixed to the cylinder block and forming a main chamber between it and the piston; a partition wall disposed at a main chamber side of the cylinder head and forming an auxiliary chamber in the main chamber; an injection nozzle for injecting a fuel into the main chamber; and an ignition plug disposed in the auxiliary chamber. The partition wall is disposed at an injection nozzle side in a circumferential direction of the cylinder and has a fuel inflow communication passage communicated to the auxiliary chamber from the main chamber, and a fuel guide communication passage for guiding the fuel injected from the injection nozzle to the fuel inflow communication passage. The fuel guide communication passage is communicated to the auxiliary chamber from the main chamber at an upstream side of the fuel inflow communication passage in the flowing direction of the gas in the main chamber.SELECTED DRAWING: Figure 2

The invention relates to the technical field of low-concentration gas engines, and particularly discloses an ignition device of a high-power low-concentration gas engine and a control method, the ignition device comprises a pre-combustion assembly, an ignition module and an electric control regulating valve; the electric control adjusting valve is used for adjusting the air inlet pressure of the pre-combustion assembly and making the pressure difference between the air inlet pressure and the pressure in the engine pressure stabilizing box constant. The pre-combustion assembly comprises an air inlet assembly, a structural body connected with the air inlet assembly and the ignition module, a nozzle matched with the structural body to form a pre-combustion chamber, a spark plug installed in the structural body and a one-way valve connected with the air inlet assembly and the pre-combustion chamber. The concentration of mixed gas in the pre-combustion chamber can be independently organized, stable ignition of the spark plug is facilitated, and lean combustion with the excess air coefficient larger than 1.6 in the main combustion chamber is achieved; the intake pressure of the pre-combustion chamber is adjusted in real time according to the intake pressure of each cylinder of the engine, and the concentration of mixed gas in the pre-combustion chamber is stable.

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.

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).

To provide a gas engine which can prevent a leaked fuel gas from catching a fire by a simple constitution.SOLUTION: A gas engine 1 includes: an engine frame 2 including a crank chamber 21 for accommodating a crankshaft 22; a cylinder 3 protruding from the engine frame 2; and a cylinder head 4 attached to the cylinder 3, and including an air supply path 41 and an exhaust path 42. Also, the gas engine 1 includes: a fuel gas valve 51 provided at the air supply pipe 13 connected to the cylinder head 4 or at the cylinder head 4, and controlling the injection of a fuel gas into supply air; a separation cover 8 forming a separation chamber 80 for accommodating the cylinder 3, the cylinder head 4 and the fuel gas valve 51 between the engine frame 2 and itself; and a ventilation fan for sucking air in the separation chamber 80.SELECTED DRAWING: Figure 1

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 invention relates to a method and a device for controlling an internal combustion engine (1) which has a prechamber spark plug (3) and a hook-type spark plug (4) in a combustion chamber (2). In a first operating range of the internal combustion engine (1), the combustion in the combustion chamber (2) is triggered by the prechamber spark plug (3), and in a second operating range of the internal combustion engine, the combustion is triggered by the hook-type spark plug (4).

An ignition system including an injection member configured to deliver fuel to an ignition zone within a combustion chamber, an ignition element configured to ignite fuel within the ignition zone, and a control unit configured to operate the injection member and the ignition element in a first ignition phase including ignition of a first delivery of fuel provided to the combustion chamber by the injection member and a second ignition phase including ignition of a second delivery of fuel provided to the combustion chamber by the injection member.

To provide an auxiliary chamber type internal combustion engine which can form air-fuel mixture having a high fuel concentration around a sub-combustion chamber in a main combustion chamber in which a tumble flow is formed.SOLUTION: An auxiliary chamber type internal combustion engine includes a main combustion chamber in which a tumble flow is formed, a sub-combustion chamber disposed across a partition wall from the main combustion chamber, and a fuel injection valve which injects fuel into the main combustion chamber. The fuel injection valve has a first injection injected toward the tumble flow, and a second injection injected toward the sub-combustion chamber.SELECTED DRAWING: Figure 1