20results about How to "Stable ignition" patented technology

The invention belongs to the field of scramjet engines, and particularly relates to an ammonia-hydrogen power wide-speed-range scramjet engine and a combustion method thereof. The ammonia-hydrogen power wide-speed-range scramjet engine comprises a combustion chamber, a liquid ammonia storage device and a hydrogen storage device; a concave cavity is formed in the combustion chamber, a fuel injection section upstream injection hole is formed in a fuel injection section of the concave cavity, the concave cavity is located at the downstream of the fuel injection section, a fuel injection section upstream micro-jet injection hole is formed in the upstream of the fuel injection section upstream injection hole, and a concave cavity inner micro-jet injection hole is formed in the concave cavity; the liquid ammonia storage device is connected with an upstream injection hole of the fuel injection section through a cooling structure; and the hydrogen storage device is connected with the upstream micro-jet injection hole of the fuel injection section and the micro-jet injection hole in the concave cavity. According to the invention, liquid ammonia and hydrogen are introduced as fuels to realize wide-range combustion organization, so that wide-range efficient combustion is realized, the fuel heat absorption requirement of high-Mach-number active cooling thermal protection is met, and zero carbon emission can be realized in the whole process.

The application discloses a multiple ignition protection method and an ignition protection circuit based on HCS08SG. The method is used in an ignition module of an automobile engine and comprises the following steps: S1, collecting an ECU driving signal of a signal input end and outputting the signal to an HCS08SG single-chip microcomputer after processing; S2, determining whether multiple ignition needs to be started by using the HCS08SG single-chip microcomputer; if the multiple ignition needs to be started, the HCS08SG single-chip microcomputer controls a power switch of the ignition module to start the multiple ignition; S3, detecting the frequency of the opening and closing of the power switch of the ignition module by using the HCS08SG single-chip microcomputer, and accumulating and calculating the ignition times in a multiple ignition cycle time; and S4, comparing the accumulated and calculated ignition times with a set threshold value by using the HCS08SG single-chip microcomputer, and controlling the power switch of the ignition module to close the multiple ignition after the set threshold value is reached. The application can accurately control the multiple ignition times of the ignition module, reduce the heat quantity of the multiple ignition module, prolong the service life of the multiple ignition module, and reduce the failure rate of the ignition coil.

The utility model provides a kind of for coke oven tail gas combustion device, belongs to tail gas combustion technical field, comprising: combustion chamber, raw gas import, combustion air import, ignition needle, explosion door, first baffle and smoke outlet;Combustion chamber includes inner shell and outer shell, combustion air passage is equipped between inner shell and outer shell, inner shell is equipped with multiple air holes, inner shell is connected with raw gas import, combustion air passage is connected with combustion air import;Ignition needle is embedded in inner shell inside one end, and ignition needle is located above raw gas import;Explosion door is rotatably connected with combustion chamber, and covers in the opening of combustion chamber;The device passes through raw gas first by ignition needle and is ignited to occur first combustion, then fully mixes with combustion air in combustion chamber interior and occurs secondary combustion, to improve combustion efficiency, and after the gas after combustion is guided and shunted, then is discharged through smoke outlet, avoid airflow direct impact smoke outlet, reduce the risk of turbulence generation and smoke outlet blockage.

This invention discloses a swirl-spray pre-combustion chamber co-combustion system and method for a UAV diesel engine. The system includes a cylinder block integrating a spherical pre-combustion chamber and a main combustion chamber, a glow plug, a swirl injector, a main injector, and a control unit. The swirl injector injects igniting diesel fuel into the pre-combustion chamber, forming a rich mixture adhering to the wall. After ignition by the glow plug, the high-temperature combustion gas is injected into the main combustion chamber through a jet channel to achieve multi-point synchronous ignition. The control unit integrates altitude adaptive correction and a dual closed-loop control strategy to match injection and ignition parameters in real time. This invention can effectively shorten the combustion duration, reduce cycle fluctuations, and significantly improve the combustion stability and environmental adaptability of the engine over a wide operating range.

The utility model discloses a kind of double-pole spark plug ignition electrode needle, belong to ignition spark plug technical field, including spark plug metal shell, the side of spark plug metal shell is provided with center electrode unit and two side electrode units, the other side of spark plug metal shell has threaded connection part, the center electrode unit is located at the center position of the side of spark plug metal shell, and center electrode unit and spark plug metal shell coaxial heart layout, the center electrode unit includes the center electrode rod installed in the side of spark plug metal shell and the heat conduction core in the inner wall of center electrode rod;By setting side electrode unit in symmetry relative to center electrode unit, the ignition of more uniform can be realized in the mode of double-pole symmetry arrangement, to further can guarantee that ignition energy is more concentrated in ignition gap, effectively improve ignition success rate, avoid the energy consumption brought by multiple ignition.

The utility model discloses an improved gas furnace end kindling structure which comprises a furnace shell, an air guide cup and an ignition assembly, the air guide cup is nested in the furnace shell, an air guide cavity is correspondingly formed between the inner wall of the furnace shell and the outer wall of the air guide cup, and kindling parts are arranged at any positions of the inner cavity of the air guide cup and the port of the air guide cup. A kindling cavity sinking relative to the top face of the kindling part is formed in the kindling part, and the ignition assembly is used for igniting the kindling cavity. The kindling cavity of the kindling part is arranged to be of the sunken structure, so that air cannot enter the kindling cavity, kindling is prevented from being blown out by airflow in the air guide cup or being sprayed out by water, and the burner has the advantages of being stable in kindling and stable in ignition.

The application discloses a carbon dioxide hydrogenation system for synthesizing methane, which is suitable for hydrogen source fluctuation, and solves the technical problems of the existing methanation reaction system, such as large equipment investment, large floor area and potential safety hazards caused by the hydrogen storage buffer device for suppressing hydrogen source fluctuation. The system comprises a raw material supply unit, a preheating unit, a reaction unit, a waste heat recovery unit, a cooling and separation unit, a circulation unit and a control unit. The hydrogen feeding pipeline of the raw material supply unit is provided with a flow detection device. The raw material preheater of the preheating unit performs primary preheating on the mixed raw material gas, and an electric heater performs secondary heat supplement. The reaction unit comprises a primary adiabatic reactor and a secondary adiabatic reactor. The waste heat recovery unit comprises a primary steam generator and a secondary steam generator. The total outlet pipeline connected with the gas phase outlet of the water separator of the cooling and separation unit is divided into an external delivery pipeline and a circulation pipeline. The control unit takes fresh hydrogen flow as a feedforward variable to perform collaborative adjustment.

This utility model relates to the field of combustion technology and discloses a two-stage ignition fuel nozzle device, including a fuel nozzle mounting base. A flow regulating valve is located at the rear end of the fuel nozzle mounting base, and fuel nozzles are fixedly mounted on both sides inside the mounting base. This utility model uses the structural design of the fuel nozzle mounting base to connect two fuel nozzles separately. The flow regulating valve can control the fuel flow to each of the two fuel nozzles. When a low flame is needed, the fuel flow to one or both fuel nozzles is reduced; when a high flame is needed, the fuel flow is increased. After ignition by the ignition needle, a flame stabilizer plate stabilizes the flame. Air from the air intake pipe mixes thoroughly with the atomized fuel. A heat shield prevents heat loss and protects surrounding components. The operation of this series of mechanisms drives the switching between high and low flames, thus enabling the device to control two fuel nozzles separately, achieving the purpose of switching between high and low flames. It ensures complete combustion, eliminates fuel odor, and is suitable for various applications requiring heating.

The present invention discloses a vertical water pipe built-in premixed membrane wall cooling burner and a gas boiler, the gas boiler includes a burner, a furnace, a heat exchanger and a flue; the burner adopts a combustion mode of built-in premixer and membrane wall cooling, with a central side-by-side tube bundle or an arc side tube bundle as the burner head, the furnace is two semi-cylindrical spaces surrounded by the burner and the heat exchanger, the heat exchanger is a water pipe bundle connected to the upper and lower annular headers and expanded along 1 to 3 circles of circular arcs; the burner and the heat exchanger can be swapped; after the premixed gas is burned by the burner, the flue gas generated flushes the relative heat exchange area and is collected and discharged by the flue. The present invention has a compact structure, low resistance and high heat exchange efficiency; the gas flow is short, the mixing and distribution are uniform, explosion-proof, and the safety is high, and it is suitable for the blending of natural gas and low / zero carbon fuels and the combustion of pure fuels; the combustion temperature is low, the load is uniform, the adjustment ratio is large, and the NOx emission is low; the burner and the heat exchanger are connected to the header by an integral or partially detachable flange, and the maintainability is high.

This invention relates to a plasma processing cavity, comprising: a reaction cavity, wherein a support structure for supporting a substrate is disposed in the reaction cavity; a dielectric window located above the reaction cavity, through which a coil array transmits an electromagnetic field to the reaction cavity; and a coil array comprising at least three ICP excitation coils and a phase-shifting coil for interconnecting the ICP excitation coils, wherein the phase-shifting coils cause the currents of different ICP excitation coils to be connected in opposite phases, and the inter-turn currents of the phase-shifting coils are either in phase or out of phase; the total length of all ICP excitation coils and the phase-shifting coils is nλ, where n is a natural number and λ is the wavelength corresponding to the frequency of the radio frequency transmitter, and the total length is the wire length of the radio frequency feed point and the ground feed point.

The present invention provides an adaptive controllable jet ramjet combination engine and its working method and application, the combination engine includes an air inlet, a combustion chamber, a tail nozzle, a small flow rocket and a large flow rocket; the air inlet, the combustion chamber and the tail nozzle are connected end to end in sequence; the small flow rocket is matched and installed in the combination section of the combustion chamber; the large flow rocket is matched and installed on the outside of the tail nozzle, and its air outlet is connected to the inner cavity of the tail nozzle; when the large flow rocket is started, its rocket plume can promote the formation of the aerodynamic throat in the tail nozzle; the tail nozzle is matched and installed with a rotating adjustment plate at the part connected to the air outlet of the large flow rocket. The present invention installs rockets in the flow channel in the combustion chamber and on the outside of the tail nozzle, and meets the requirements of high thrust and effective specific impulse required by the aircraft during the acceleration process in the ejection mode and the sub-combustion mode by adjusting the coupling effect of the large flow rocket, the small flow rocket and the tail nozzle.

The invention relates to the technical field of vehicles, in particular to a thermal management device of a spark plug, an engine, a vehicle and a thermal management method of the spark plug. The switch assembly has multiple switch states, and each switch state is determined by the temperature interval where the current temperature of the spark plug is located; the cooling assembly is used for cooling the fluid in the fluid passage when the switch assembly is in the first switch state; the heating assembly is used for heating the fluid in the fluid passage when the switch assembly is in the second switch state; and the control assembly is used for controlling the switch assembly to be in a first on-off state when the current temperature is in the first temperature interval, or controlling the switch assembly to be in a second on-off state when the current temperature is in the second temperature interval. Therefore, the problem that the temperature of the spark plug cannot be actively adjusted is solved, the spark plug can be heated or cooled, and it is ensured that the spark plug can achieve stable ignition under various working conditions.

The utility model provides a commercial outdoor efficient gas fryer, which belongs to the technical field of fryers and comprises an oil cylinder and a fire tube arranged in the oil cylinder and used for heating oil, a chimney communicated with the fire tube is attached to the outer wall of the oil cylinder, and the chimney and the oil cylinder share the same wall surface; the fire tube can convey high-temperature flue gas generated during combustion into the chimney; the top of the chimney is designed to be open, a smoke discharging gap used for discharging smoke is formed in the opening of the chimney, and the size of the smoke discharging gap is smaller than that of the opening in the upper portion of the chimney so that the smoke discharging speed can be limited, high-temperature smoke can be retained in the chimney, and heat can be conducted to the oil cylinder through the common wall face. According to the utility model, the fire tube and the chimney are matched for use, so that high temperature of the fire tube and high-temperature flue gas synchronously heat oil, heat energy is fully utilized, and the oil heating efficiency is improved.

The present application provides a method, device, vehicle and storage medium for controlling mode switching, which is applied to the field of vehicle technology, and includes: when it is determined that the vehicle needs to switch from a pure electric rear-drive mode to a pure electric four-wheel drive mode, controlling the second input shaft to engage in an even gear; if it is detected that the gear position of the second input shaft is neutral, determining that the even gear on the second input shaft is unavailable; when it is determined that the even gear on the second input shaft is unavailable, controlling the first input shaft to engage in an odd gear, controlling the second clutch and the first clutch to close, so that the vehicle switches to a pure electric four-wheel drive mode; when it is determined that the vehicle switches to a pure electric four-wheel drive mode, controlling the front drive motor of the vehicle to output torque to the front wheels of the vehicle through the second clutch, the first clutch and the first input shaft. This method can ensure that the vehicle can switch from a pure electric rear-drive mode to a pure electric four-wheel drive mode when the even gear is unavailable, thereby ensuring the power performance of the vehicle.

The invention discloses a collector driving signal power-on delay protection circuit, which is connected between a control signal input end of an ignition driving chip and a power supply, and comprises a delay module used for setting delay time and delaying output of a control signal according to preset delay time; the switch control module is used for controlling opening or closing of a control signal output to the ignition driving chip; the invention further discloses a delay protection method which is applied to the collector driving signal power-on delay protection circuit and comprises the following steps: S1, at the power-on moment of the ignition module, the delay module delays a control signal output to the ignition driving chip according to a preset delay time, and the ignition module outputs the control signal to the ignition driving chip; at the moment, the switch control module controls to close a control signal output to the ignition driving chip; s2, during the time delay action period of the time delay module, waiting for the ignition driving chip to reach a stable state; and S3, after the ignition driving chip operates stably, the delay module stops working, and the switch control module controls to start the control signal output to the ignition driving chip. The control signal input to the ignition driving chip is subjected to delay processing, so that the ignition module is prevented from enabling the power tube to be in a long-time conduction state at the moment of electrifying, transient heat generation of the power tube is reduced, the reliability of the ignition module is improved, the service life of the ignition module is prolonged, the failure rate of an ignition coil is reduced, and the service life of the ignition coil is prolonged. Effective and stable ignition of the ignition coil is ensured, so that the dynamic stability of an automobile is ensured.

The present invention discloses an immersion type low nitrogen gas combustion device, which comprises a device body, an upper burner, an ignition gun and a lower burner, wherein the device body is provided with an upper air inlet, a smoke outlet and a combustion space, the upper burner is arranged at the upper part of the device body, the upper burner is provided with an upper gas inlet and an upper gas nozzle, the ignition gun is arranged at the upper burner and is provided with an ignition gas inlet and a downward ignition gun outlet, the ignition gun outlet and the upper gas nozzle are arranged close to each other, the lower burner is arranged at the lower part of the device body, the lower burner is provided with a lower gas inlet pipe and an upward lower gas nozzle, and the lower gas nozzle and the ignition gun outlet are arranged toward each other. According to the present invention, the lower burner can be stably ignited, the ignition success rate is improved, the ignition success rate is as high as 100%, and the occurrence of deflagration is avoided; the combustion effect is improved, the space in the combustion chamber is maximized, and the overall combustion stability will be greatly improved.

The present application belongs to the technical field of underwater propulsion ignition control, and particularly relates to a high-efficiency ignition control method for underwater aluminum powder and atomized water reaction. The present application adjusts system variables based on real-time working conditions, performs drying and dispersion on aluminum powder, and performs stable pressure atomization and preheating on water. Then, layered induction heating is implemented by using an alternating magnetic field, and through two-stage gradient heating of preheating and ignition, instantaneous ignition triggering is realized. During the reaction, a temperature closed-loop control mechanism is constructed, the heat preservation power and the material supply rate are dynamically adjusted, and pressure adaptation is simultaneously performed to maintain the continuous stability of the reaction. Finally, the system is reset through smooth cooling and multi-stage purging. The present application effectively overcomes the interference of underwater extreme environment, significantly improves the ignition success rate and system operation stability, effectively reduces the overall ignition energy consumption, and provides a reliable closed-loop control scheme for the engineering application of a new type of underwater high-energy power system.

The invention provides a control device and method for the air inlet temperature of a methanol compression ignition engine, and belongs to the technical field of engines, the control device comprises an intercooler arranged on an intercooling loop, and the intercooling loop is provided with a first valve; the intercooler bypass branch is provided with a second valve; the EGR cooler is arranged on the EGR loop, and a third valve and a fifth valve are arranged on the EGR loop; the EGR bypass branch is provided with a fourth valve; the controller is used for controlling one of the first valve and the second valve to be opened and the other valve to be closed under the cold start working condition or the preset low-load working condition, adjusting the opening degree of the fourth valve based on the air inlet temperature target value and controlling the third valve and the fifth valve to be closed. By arranging the intercooling bypass, the problems that when an existing methanol compression ignition engine combusts pure methanol fuel in a low-temperature environment, cold start stable ignition cannot be achieved, and continuous stable ignition and stable combustion cannot be achieved are solved.

The ignition method and device are applied to a vehicle, the vehicle comprises the pure ammonia engine and a motor, the pure ammonia engine comprises a variable valve timing device, and the method comprises the steps that if a pure ammonia engine starting instruction is received, the motor is controlled to drive the pure ammonia engine to the preset rotating speed, and the rotating speed is maintained for the first preset time; after the first preset time is maintained, the variable valve timing device is controlled to enter a preset control state; ammonia injection control and ignition control are executed at the later stage of the compression stroke of the pure ammonia engine to ignite the pure ammonia engine. According to the method, rapid and reliable starting of the pure ammonia engine in the hybrid power vehicle is achieved, meanwhile, the combustion process is optimized, and the energy efficiency and starting smoothness of the whole vehicle are improved.

The invention discloses a vortex control stabilizer, comprising an air inlet nozzle, an oil injection pipe, an evaporation pipe, a U-shaped gradually expanding blunt body and a stabilizer wall surface, wherein the U-shaped gradually expanding blunt body is formed of a closed cavity by an arc-shaped front wall, a gradually expanding side wall and a rear end wall, the evaporation pipe is connected to the rear end wall, the evaporation pipe is provided with a plurality of nozzles leading to the area between the stabilizer wall surfaces, the air inlet nozzle is provided with a plurality of nozzles and is discretely arranged along the circumference of the vortex control stabilizer, the air inlet nozzle extends from the arc-shaped front wall into the closed cavity and is connected to the evaporation pipe, the oil injection pipe is connected to the air inlet nozzle from the side of the air inlet nozzle, the stabilizer wall surface comprises an inner wall surface and an outer wall surface, the inner wall surface and the outer wall surface are respectively located at the inner and outer edges of the rear end wall, an air inlet gap is left between the inner wall surface and the inner edge of the rear end wall, the inner wall surface is provided with a guide plate extending to the outer wall surface, an air inlet gap is formed between the guide plate and the rear end wall and is connected to the air inlet gap. The invention can achieve stable and efficient combustion in a wide range of working conditions, and improve the ignition and flameout performance and combustion efficiency.