1356 results about "Spark plug" patented technology

The invention discloses an air cooling system of an engine and the engine, the air cooling system comprises an engine body and a cooling system, the cooling system comprises a fan assembly, and the fan assembly comprises a fan and a fan cover provided with an air outlet I; the wind scooper is used for forming a cooling air duct for cooling the engine body, and the cooling air duct communicates with the air outlet I; the flow guide piece is arranged in the cooling air duct and used for forming a cooling air branch air duct to distribute and guide the cooling air to the area, close to the air inlet side, of the cylinder head spark plug I; according to the air cooling system of the engine and the engine, the air guide cover is connected with the fan cover, so that the cooling air channel for cooling the cylinder body and the cylinder head is formed, sufficient cooling of the cylinder body and the cylinder head can be achieved, meanwhile, the cooling effect on a spark plug can be improved by arranging the flow guide piece to guide cooling air to the spark plug area of the cylinder head, and the service life of the engine is prolonged. The utilization rate of cooling air is increased, heat dissipation of all parts of the engine is uniform, and therefore the requirements for dynamic property, economical efficiency and reliability of the engine are met.

A combustor includes a housing and a combustion chamber assembly. The combustion cavity assembly comprises a cylinder part, a mounting base, a first spark plug, a second spark plug and a diesel nozzle assembly. The barrel part comprises a combustion cavity. The mounting base comprises an air inlet channel and a mounting cylinder part. The first sparking plug and the second sparking plug stretch into the combustion cavity in a protruding mode. The diesel oil nozzle assembly is installed on the installation barrel body part and used for spraying diesel oil into the combustion cavity. The diesel nozzle assembly comprises a valve needle, a first rotational flow assembly located at the bottom of the valve needle and a sleeve part located below the first rotational flow assembly, the first rotational flow assembly comprises an inlet hole and a closure spraying hole, and the sleeve part is provided with a mixing cavity communicating with the closure spraying hole. And the mixing cavity is used for mixing diesel oil and air. The closure spraying hole improves the continuity of spraying diesel oil at low power.

A combustor includes a housing and a combustion chamber assembly. The combustion cavity assembly comprises a cylinder part, a mounting base, a first spark plug, a second spark plug and a diesel nozzle assembly. The barrel part comprises a combustion cavity. The mounting base comprises an air inlet channel, a first air hole through hole and a second air hole through hole. The first sparking plug and the second sparking plug stretch into the combustion cavity in a protruding mode. A first airflow purging channel is further arranged between the first spark plug and the first wall part so that part of air can be used for purging the first spark plug. A second airflow purging channel is further arranged between the second spark plug and the second wall part so that part of air can be used for purging the second spark plug. According to the combustor, the probability of carbon deposition of the first spark plug and the second spark plug can be reduced.

A method of combusting hydrogen gas in an engine cylinder to initiate a diffusion combustion process, the engine cylinder having a cylinder piston which is driven by means of a crankshaft between bottom dead centre (BDC) and top dead centre (TDC) to perform a compression stroke. The method comprises delivering a pilot injection of hydrogen gas into a combustion chamber during the compression stroke so that the pilot injection of hydrogen pre-mixes with the air and forms an ignitable air / hydrogen gas mixture in the vicinity of an engine cylinder spark plug; generating a spark with a spark plug to ignite the ignitable air / hydrogen gas mixture to generate a primary combustion event which results in a fuel burn and a cloud of primary gas; and delivering a main injection of hydrogen gas directly into the burning cloud of primary gas so that the main injection of hydrogen gas ignites in the compression stroke to deliver a secondary combustion event.

The invention discloses a self-rotating cleaning nozzle for cleaning carbon deposits in an air cylinder and a piston ring of a fuel engine, and belongs to the field of engine carbon deposit cleaning. One end of the pulse rotary spraying assembly is connected with an electromagnetic valve seat, and the other end of the pulse rotary cleaning assembly can be directly installed on a spark plug hole to be connected with a combustion chamber, so that a hollow gas conveying cavity is formed. When the piston is located at the top dead center of the air inlet stroke, compressed air is injected into the air cylinder to push the piston to do work, and therefore the engine works continuously. The engine cleaning device has the beneficial effects that an engine is cleaned in the moving process, residues are discharged from the air inlet cavity channel, and the residues cannot cause secondary pollution to the space of a combustion chamber and three-way catalysis; compressed air of the sector pushes the spraying nozzle to rotate and spray out along the center shaft, 360-degree surrounding type cleaning can be conducted on the space of the combustion chamber, and no cleaning blind area is left.

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.

A pre-ignition prevention system for a turbulent jet ignition (TJI) engine having dual spark plugs includes an ion sensing system and a controller configured to receive the ion sense signal from the ion sensing system, detect, using the ion sense signal, a misfire event where a firing of a first spark plug fails to completely combust a fuel / air pre-charge in a pre-chamber of a cylinder of the TJI engine, in response to detecting the misfire event, detect, using the ion sense signal, an exhaust stroke heat release event after a firing of the second spark plug indicative of a remaining portion of a primary fuel / air charge in the main chamber and, in response to detecting the exhaust stroke heat release event, adjust fueling for at least one subsequent combustion cycle to prevent pre-ignition of the remaining portion of the primary fuel / air charge in the main chamber.

Liquefied natural gas brings energy overriding and environmental disruption. However, the liquefied natural gas is a liquid dielectric medium, can be easily liquefied by pressurizing at room temperature, can be expanded by more than 250 times in volume during gasification, and is relatively high in dielectric constant and relatively low in voltage resistance. As a capacitor, such a liquid dielectric is considered; the energy of the liquid dielectric capacitor is consumed inside the capacitor for an engine, welding or buoyancy gas generation, or is consumed outside the capacitor for use as an on-board capacitor for a vehicle. [Solution] A liquid dielectric capacitor is considered as a dielectric breakdown induced igniter that can replace a conventional spark plug. In order to utilize the principle of such an igniter as an energy source for an engine, a welding device or a buoyancy bag for lifting a subsea resource, an electrical charge is applied to the liquid dielectric thin layer, and then the thickness of the liquid dielectric thin layer is made close to zero to cause dielectric breakdown, or the thickness of the liquid dielectric thin layer is increased to cause breakdown of the liquid dielectric thin layer. A high voltage source is established for a vehicle-mounted capacitor of the vehicle. Therefore, a world without environmental damage is realized.

Disclosed is a pre-combustion chamber igniter, a methanol engine and a cold start control method thereof. The pre-combustion chamber igniter includes a housing, nozzles, a fuel injector, a spark plug and heating elements. The heating elements at outer surfaces of the nozzles can heat fuel spray sprayed to an inner wall of a pre-combustion chamber. According to the present disclosure, the pre-combustion chamber is heated using the heating elements during a cold start of the methanol engine, and an excess air coefficient of an interior of the pre-combustion chamber can be controlled between 0.8 and 1.0 to achieve ultra-lean combustion of the engine in a cold start state.

An ammonia-rich combustion coupled dual-mode prechamber ammonia-fueled engine control system is provided, including an ammonia-fueled engine and an electronic control unit. The ammonia-fueled engine includes a combustion chamber, a dual-mode jet ignition device, and an ammonia injector. The dual-mode jet ignition device includes a prechamber, an air injector, and a fuel injector. When the engine operates, ammonia fuel is firstly injected into the combustion chamber by the ammonia injector to form a rich ammonia-air mixture with air in the combustion chamber. During a compression stroke of the engine, the rich ammonia-air mixture in the combustion chamber is entered into the prechamber through a jet hole. The air injector performs scavenging in the prechamber until a equivalence ratio of prechamber gas mixture is less than 1.0, and then the fuel injector injects fuel into the prechamber forming target mixture. Finally, the target mixture is ignited by the spark plug.

The invention provides an injector based on a liquid oxygen methane two-component propellant and an attitude control engine, and the injector comprises an injector body, a centrifugal nozzle assembly and a spark plug; the centrifugal nozzle assembly is arranged on the injector body, and the injector body is provided with a liquid collecting cavity; a propellant in the storage box is guided to the liquid collecting cavity and is sprayed to the spraying pipe through the centrifugal nozzle assembly; the sparking plug is arranged on the injector body, and an ignition part of the sparking plug is arranged close to an outlet of the centrifugal nozzle assembly so as to ignite the propellant sprayed into the spray pipe by the centrifugal nozzle assembly. The injector is more compact in structure, and the working reliability of the injector can be improved.

A spark plug with a longitudinal axis. The spark plug includes a housing; an insulator disposed at least partly inside the housing; a center electrode disposed at least partly inside the insulator and having a base body and a first ignition element; and at least one ground electrode disposed inside the housing and having a base body and a second ignition element. The ground electrode and the center electrode are disposed such they form a spark gap which extends radially with respect to the spark plug longitudinal axis. A surface of the first ignition element of the center electrode which serves as ignition surfaces and a surface of the second ignition element of the ground electrode which serves as ignition surfaces are flat surfaces. A width of the spark gap is not greater than 0.3 mm, and the spark gap is formed inside the housing.

A system for detecting a source of a misfire for a turbulent jet ignition (TJI) engine having a first ignition device disposed in a pre-chamber of a cylinder head and a second ignition device disposed for communication with a main combustion chamber is presented. The system includes a controller that determines engine operating conditions; generates a first spark from the first ignition device at a first time; generates a second spark from the second ignition device at a second time; activates a skipfire mode based on a determination that the engine operating conditions are satisfactory, wherein in the skipfire mode, the controller generates a modified second spark at a modified second time, the modified second time being later than the second time; and determines a misfire event based on sensing ionization of gasses at the main combustion chamber subsequent to firing the first and second ignition devices.

The invention provides a liquid ammonia in-cylinder direct injection engine combustion system and method with an active pre-combustion chamber, and relates to the technical field of internal combustion engines, the liquid ammonia in-cylinder direct injection engine combustion system comprises a cylinder cover and a cylinder sleeve arranged below the cylinder cover, the pre-combustion chamber is vertically arranged in the center of the cylinder cover, a liquid ammonia injector is arranged on one side of the pre-combustion chamber, and the active pre-combustion chamber is arranged in the cylinder sleeve. A hydrogen ejector and a spark plug are arranged on the pre-combustion chamber; and spraying holes are formed in the pre-combustion chamber and located in the bottom of the pre-combustion chamber, and the spraying holes of the pre-combustion chamber face one side of the liquid ammonia ejector. According to the liquid ammonia in-cylinder direct injection engine combustion system and method with the active pre-combustion chamber, the effect that diffusion combustion is promoted through premixed combustion of ammonia fuel is achieved, accurate control over the combustion initial point and the heat release rate is achieved, and the requirements for the low hydrogen energy ratio, high ignition efficiency and high heat efficiency of an ammonia fuel engine in the full working condition range are met.

The invention relates to the technical field of combustion chambers, and provides a low-pollution combustion chamber which comprises a flame tube head, two sparking plugs, a flame tube outer ring and a flame tube inner ring, and the flame tube head is arranged between the flame tube outer ring and the flame tube inner ring and connected with the flame tube outer ring and the flame tube inner ring. A plurality of lean oil combustion structures and two rich oil combustion structures are arranged on the head portion of the flame tube in the circumferential direction, the two sparking plugs are arranged at different positions of an outer ring of the flame tube respectively, and each sparking plug and the corresponding rich oil combustion structure are located in the same area. Therefore, the ignition and flameout performance of the rich oil combustion structure is improved, flames can be stabilized in a small state, the lean oil combustion structure is responsible for reducing the emission level of the whole combustion chamber, the defects of the lean oil combustion structure and the rich oil combustion structure are overcome, and meanwhile the advantages of the lean oil combustion structure and the rich oil combustion structure are combined.

An avalanche triggering apparatus having a tower, a detonation chamber, and gas supply lines that are configured to deliver fuel gas and oxidizer to the detonation chamber. The flow is gas is controlled remotely, and a spark plug is configured to ignite gases within the detonation chamber based on the flow of fuel gas through a flow switch that acts as a sensor. The detonation chamber has a closed, rounded top and an open bottom end that is configured to face a snow surface. The detonation chamber is connected to the tower via mounting brackets and two pairs of isolator springs. Each isolator spring is comprised of a helical cable isolator that is inserted through a plurality of holes in two aluminum members in a helical configuration. The tower is comprised of at least two sections that are secured together via flanges.

The utility model discloses a combustible gas pulse combustion utilization device which comprises a gas inlet pipe, a Tesla valve, a spark plug, a plurality of front sleeves, a plurality of rear sleeves and a gas exhaust pipe, the number of the front sleeves is the same as that of the rear sleeves, the front sleeves are sequentially sleeved together from inside to outside to form a front sleeve group, the rear sleeves are sequentially sleeved together from inside to outside to form a rear sleeve group, and the gas exhaust pipe is arranged in the rear sleeve group. The tail portion of the front sleeve set is in butt joint with the rear sleeve set, the front sleeves correspond to the rear sleeves in a one-to-one mode, a Tesla valve is fixedly arranged in the front sleeve on the innermost layer, an air inlet of the Tesla valve is communicated with an air inlet pipe, an air outlet of the Tesla valve is provided with a spark plug, and an exhaust pipe is fixedly arranged in the rear sleeve on the innermost layer. A combustion cavity is formed between the front sleeve set and the rear sleeve set, and the longitudinal section of the combustion cavity is T-shaped, square, round or oval.

The invention discloses an integrated insulated and sealed engine semiconductor sparking plug structure, and particularly relates to the field of aviation and airspace engine ignition devices. Comprising a shell in which an insulator is sleeved; a first groove body, a second groove body, a third groove body and a fourth groove body which are communicated with one another are sequentially formed along the axial direction of the insulator; the sealing positioning piece comprises a baffle and a positioning rod which are vertically connected, the baffle is perpendicular to the insulator and located in the first groove body, and the outer diameter of the baffle is larger than the outer diameter of the positioning rod and smaller than the inner diameter of the first groove body; the positioning rod is located in the second groove body, and the outer diameter of the positioning rod is equal to the inner diameter of the second groove body; a positioning groove is inwards formed in the free end of the positioning rod; the central electrode is located in the insulator, one end of the central electrode extends into the positioning groove and is in threaded connection, and the other end of the central electrode is sleeved with a semiconductor block which is located in the fourth groove body. Based on the conductor sparking plug structure, the insulating strength can be improved, and the working performance of the semiconductor sparking plug in the whole life cycle is stable and reliable.

A device for decomposing ammonia into a nitrogen-hydrogen mixture. The device comprising a cylindrical combustion chamber, a device for supplying air-ammonia mixture, at least one main channel for its supply, a tangential swirler, a spark plug installed in the combustion chamber, and a channel for supplying auxiliary fuel with increased flammability. A cylindrical body is introduced, inside of which a cylindrical combustion chamber is located coaxially with the formation between them, the entrance of the main channel and the tangential swirler, an additional annular channel for supplying and heating the air-ammonia mixture, wherein the cylindrical side surfaces of the body and the combustion chamber have at least one through hole for installation of the spark plug, a flame sensor, a device for secondary air supply and a flame stabilizer are introduced, wherein the combustion chamber is a cooling chamber, at the outlet of which a catalytic unit is installed.

The invention relates to the field of fuel injection systems of internal combustion engines, in particular to a liquid ammonia-hydrogen dual-fuel premixing direct injection combustion chamber which comprises a pre-combustion chamber, an injection end of the pre-combustion chamber is mounted in the combustion chamber, and a spark plug and a mixed fuel injection structure are mounted on the pre-combustion chamber. The inlet end of the mixed fuel injection structure is communicated with a liquid ammonia and hydrogen mixing structure, a hydrogen inlet is formed in the side wall of the liquid ammonia and hydrogen mixing structure, the inlet end of the liquid ammonia and hydrogen mixing structure is communicated with a liquid ammonia injection structure, an ammonia inlet is formed in the side wall of the liquid ammonia injection structure, and a valve structure is arranged in the liquid ammonia injection structure. The problems of fuel injection and ignition in the ammonia-hydrogen fusion engine are solved.

An internal combustion engine includes an cylinder block defining at least one cylinder, a cylinder head at least partially defining a combustion chamber for each cylinder of the cylinder block, and a spark plug bore formed in the cylinder head for each cylinder, the spark plug bore connecting to the combustion chamber and configured to receive a spark plug. A turbulent jet ignition (TJI) pre-chamber insert is press-fit into the spark plug bore, and defining an internal combustion pre-chamber in fluid communication with the combustion chamber.

The invention discloses a constant-volume optical test platform suitable for ammonia-hydrogen stratified combustion and a test method. The test platform comprises an experiment bench; the constant-volume combustion bomb is mounted on the experiment bench, and the interior of the constant-volume combustion bomb is divided into a combustion chamber and two heating chambers by two partition pieces; the ejector mounting seat is arranged at the top of the combustion chamber; the hydrogen ejector is mounted on the ejector mounting seat and is arranged towards the center of the combustion chamber; the two spark plugs are respectively arranged on the two separators and are arranged towards the center of the combustion chamber; the ammonia gas-air channel is arranged on the ejector mounting seat; the two first windows are symmetrically arranged on the two side faces, adjacent to the partition piece, of the combustion chamber. The second window is arranged on the bottom surface of the combustion chamber; the optical system is installed on the experiment bench, and the optical system and the constant volume combustion bomb form an optical path position required by a schlieren method and a direct shooting method; and the control system is electrically connected with the hydrogen ejector, the spark plug and the optical system.

The utility model discloses an electric field combustion-supporting jet ignition device and an ammonia fuel engine, and relates to the technical field of internal combustion engines, the electric field combustion-supporting jet ignition device comprises a jet device, an auxiliary electrode, a spark plug and an ammonia sprayer, the jet device comprises a jet device main body and a jet nozzle, and the jet device main body is connected with the jet nozzle to form a pre-combustion chamber; the pre-combustion chamber is communicated with the main combustion chamber; the auxiliary electrode comprises a pre-combustion chamber auxiliary electrode and a main combustion chamber auxiliary electrode, the auxiliary electrode is connected with the control unit through an electrical circuit, and an electric field is formed in the pre-combustion chamber and the main combustion chamber; the spark plug is electrically connected with the control unit through an electrical circuit; and the ammonia spraying device is used for spraying ammonia gas into the pre-combustion chamber through a nozzle outlet of the ammonia spraying device, the ammonia gas is fully mixed with air in the pre-combustion chamber, the mixed gas is ignited at an ignition electrode of the spark plug under the action of an electric field, and the ammonia mixed gas in the main combustion chamber is ignited. Electric field combustion supporting is applied to the jet ignition device, and the combustion reaction rate and the flame propagation speed are increased.

The active pre-combustion chamber system comprises an air supply pipeline, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber and a pre-combustion chamber, the outlet end of the gas supply pipeline is communicated with the premixing chamber, and the premixing chamber is provided with a fuel injector; the pre-combustion chamber is communicated with the pre-mixing chamber through a connecting pipeline, the pre-combustion chamber is communicated with a combustion chamber of an engine, the pre-combustion chamber is provided with a spark plug, and a control valve used for controlling connection and disconnection is arranged in the connecting pipeline. According to the active pre-combustion chamber system, the spark plug is arranged in the pre-combustion chamber, the fuel injector is arranged in the pre-mixing chamber, the structural compactness of the pre-combustion chamber can be improved, the size of the pre-combustion chamber is reduced, then loss during heat conduction is reduced, and the heat efficiency of an engine is improved; coking and blocking of the oil injector caused by high temperature can be avoided, operation reliability of the oil injector is guaranteed, the using effect is better, and the application range is wider.

The invention relates to the technical field of engine starting, and provides a cold start auxiliary system of a methanol engine, a control method of the cold start auxiliary system and related equipment. The cold start auxiliary system of the methanol engine comprises an air inlet heater which is assembled on the inner wall of an air inlet pipeline of the methanol engine and used for heating air in the air inlet pipeline; the spark plug heater is assembled on the outer wall of a spark plug of the methanol engine and used for heating the spark plug; the nozzle heater is assembled on the outer wall of a nozzle of the methanol engine and used for heating methanol fuel flowing through the nozzle; the air inlet temperature sensor is assembled on the inner wall of an air inlet pipeline of the methanol engine and is used for detecting the temperature of air in the air inlet pipeline; the control unit is in communication connection with the air inlet heater, the spark plug heater, the nozzle heater and the air inlet temperature sensor and used for controlling the air inlet heater, the spark plug heater and the nozzle heater according to the temperature of cooling liquid of the methanol engine.

The invention discloses a platinum-iridium series electric contact material, and belongs to the technical field of platinum-iridium series electric contact materials. According to the platinum-iridium alloy, alloy elements of Nb, Ru and Re are added into the platinum-iridium alloy, expensive precious metal raw materials of Pt and Ir can be saved, a platinum-iridium alloy ingot blank is prepared through the high-flux electric arc melting technology, and then the platinum-iridium alloy ingot blank is subjected to the machining processes of rolling, drawing, heat treatment and the like to finally form finished products of sheets, wires and the like. The prepared platinum-iridium electric contact material has the characteristics of high melting point, high density, high hardness, wear resistance, high resistivity, stable contact resistance, fusion welding resistance, arc ablation resistance and the like, and can be applied to materials of components such as igniters, spark plugs, relay contacts, transmitting tube filaments and the like.

The utility model provides a gas burning torch which comprises a torch base unit, an outer pipe, an air delivery pipe, a spark plug, a flame monitoring device and a fire observation mirror, the air delivery pipe is located on the inner side of the outer pipe, a gas channel is arranged between the outer pipe and the air delivery pipe, and on the cross section, the air delivery pipe and the outer pipe are eccentrically arranged. The ignition gun is opposite to a conventional ignition gun gas circuit design thought, air is input from the middle, and gas is conveyed by surrounding the air conveying pipe. A flame monitoring device at the rear end of the ignition gun obtains a good flame signal through an air conveying pipe with a relatively large sectional area in the middle, and reliable detection of flames is achieved. The air conveying pipe is eccentrically arranged in the outer pipe, and sufficient space is provided for reliable installation of the spark plug in a compact structure. And meanwhile, a pre-mixing flame stabilizing structure is designed at the front end of the ignition gun, so that ignition and main fire can be stably established, and the ignition success rate is ensured.

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.

An electronic garage shelf is described. The system includes an electronic garage shelf which may be a metaphor for a shelf in a garage that is used to store parts for a vehicle. Merely for example, the electronic garage shelf may store a token part that signifies a part or smart component such as an oil filter, carburetor, spark plug, on a garage shelf in the user's garage. Further, the metaphor for a shelf in the garage may be expanded to include a virtual part that represents a part or smart component the user wants to acquire. Accordingly, the system may include garage shelf information comprised of virtual part information and token part information where the virtual part information may store virtual parts signifying parts that are desirable for acquisition and the token part information may store token parts signifying parts that are in the possession of the user.

The invention provides a spark plug service life prediction method and device, terminal equipment and a medium. The method comprises the steps that periodic driving parameters of a vehicle in a detection period are acquired; according to the periodic driving parameter, determining a periodic attenuation rate corresponding to a spark plug of the vehicle in the detection period; and determining the residual service life of the spark plug according to the initial attenuation rate and the periodic attenuation rate. According to the method, the residual service life of the spark plug can be periodically and accurately predicted, and whether the spark plug needs to be replaced or not is periodically judged, so that resource waste caused by premature replacement of the spark plug can be avoided, the spark plug can be timely replaced, and normal operation of a vehicle is guaranteed.