353 results about "Flameout" patented technology

The invention provides a dual-fuel combustion nozzle which comprises a nozzle shell connected with a cooling plate. A hydrogen fuel gas collecting cavity and a liquid hydrocarbon fuel pipe which are coaxial are arranged in the nozzle shell; a first air channel is formed between the inner wall of the hydrogen fuel gas collecting cavity and the liquid hydrocarbon fuel pipe, and a swirler is arranged in the first air channel; a second air channel is formed between the outer wall of the hydrogen fuel gas collecting cavity and the inner shell of the nozzle shell; a liquid hydrocarbon spray hole is formed in the outlet end of the liquid hydrocarbon fuel pipe and is positioned in a space formed by the expansion section of the venturi structure; a hydrogen spray hole is formed in the side wall, close to the top end, of the hydrogen fuel collecting cavity. The invention further provides an engine combustion chamber comprising the combustion nozzle. According to the invention, efficient mixing of hydrocarbon fuel and hydrogen fuel can be realized, the phenomenon of backfire spontaneous combustion is avoided, the flameout boundary is widened, and stable switching of multiple working modes is realized.

The invention relates to a vehicle interior mildew-proof method, a control system and a vehicle, and the method comprises the steps: if the vehicle flames out after running and the continuous flameout time is greater than or equal to a first time length, obtaining the humidity and weather state in the vehicle within the continuous flameout time; according to the humidity, the weather state and the continuous flameout time of the interior of the vehicle, coefficients influencing mildewing of the interior are obtained, and the coefficients are integrated; and if the value of the integrated coefficient is within the preset threshold range, an air conditioning system in the vehicle and / or a heating system of the vehicle interior are / is started. By adopting the method, the problem that the vehicle interior is easy to mildew can be solved.

The invention provides a vehicle control method and device, a vehicle and a storage medium, the method is applied to the field of vehicles, and the method comprises the steps that when the vehicle is in a direct drive mode, a rear axle transmission is put into a neutral gear, and when the running speed of the vehicle is smaller than the critical running speed of the direct drive mode, the rear axle transmission is controlled to be put into a preset gear from the neutral gear, if the rear axle transmission does not enter the preset gear, when the running speed of the vehicle is smaller than the vehicle speed when an engine of the vehicle is close to flameout, the vehicle is controlled to be converted into an idling mode or a series mode from a direct drive mode based on the battery electric quantity of a power battery. Under the condition that the preset gear of the rear axle transmission is unavailable, through the idling mode, power loss of the vehicle can be prevented, flameout of the engine can be prevented, through the series connection mode, flameout of the engine can be prevented, the safety of the vehicle can be improved through the two modes, and meanwhile the service life of the engine can be prolonged.

The invention relates to the technical field of arrangement or configuration of propelling systems, and discloses a combined type multi-unit electronic control solid thruster and an electronic control thrust method.The combined type multi-unit electronic control solid thruster is characterized in that a shell, an anode assembly and an integrated spray pipe are connected and fixed into an integral structure through the anode assembly, and an anode binding post of the anode assembly is exposed; a porous area is arranged in the area, between the inner cavity of the shell and the inner cavity of the integrated spray pipe, on the anode assembly, and the porous area is used for forming a circulating channel of propellant gas; the shell is further provided with at least one end face type thruster unit and at least one coaxial thruster unit, the end face type thruster units and the coaxial thruster units are arranged at intervals in the circumferential direction of the shell, and cathode binding posts of the end face type thruster units and three-axis cathodes of the coaxial thruster units are exposed out of the end face of the shell. Repeatable ignition and flameout can be achieved, and the device is suitable for being used in application occasions where thrust needs to be started and stopped frequently.

The invention relates to the technical field of fuel nozzles, and discloses a hydrogen fuel nozzle head structure with a hydrogen pressure stabilizing cavity, the center of a head flow guide disc is provided with a cavity structure, the cavity structure can serve as the pressure stabilizing cavity to stabilize the pressure of injected hydrogen, and the pressure of hydrogen entering an air jet hole is stable; hydrogen and air can be mixed more uniformly; a whole circle of air jet holes are distributed in the radial direction, a whole circle of circumferential hydrogen channels are formed in the radial inner side and the radial outer side of each circle of air jet holes, each air jet hole is provided with a radial hydrogen jet hole in the vertical direction, and a multi-point direct injection structure is formed, so that the airflow speed is increased, the combustion flame stopping time is shortened, micro-mixing diffusion combustion is achieved, and the NOx emission amount is reduced. The hydrogen fuel nozzle head structure is based on the characteristic that hydrogen is wide and suitable for combustion, the lean oil flameout boundary of a combustion chamber can be widened, and the wider working range of an engine is achieved.

The gas flameout protection device comprises an electromagnetic valve, the electromagnetic valve comprises a shell, a sealing gasket, a connecting shaft, an electromagnetic sheet and an electromagnet, and the electromagnetic sheet and the electromagnet are installed in the shell; the upper end of the connecting shaft is connected with the sealing gasket, and the lower end of the connecting shaft is connected with the electromagnetic sheet; the electromagnetic sheet and the electromagnet can be attracted; the lower end of the shell is connected with a valve seat, the valve seat is an integrated non-metal valve seat, and the electromagnet is connected with the upper end of the valve seat in a clamped mode. The valve seat is further provided with an outer connecting part used for being connected with a valve body of the gas valve. A coil is wound on the electromagnet, and a ground wire pin and a main wire pin of the coil extend outwards and are connected into the two connecting pins respectively. The cost can be greatly reduced, the assembling efficiency of the thermocouple and the electromagnetic valve can be improved, the assembling reliability between the electromagnet and the valve seat in the electromagnetic valve can be improved, and metal chippings are avoided.

The invention relates to a flameout control method, system and equipment for a gas heating water heater and a medium. The gas heating water heater comprises a sealed combustion system, a Venturi mixer and a pneumatic gas valve which are sequentially communicated, and a command valve of the pneumatic gas valve is connected to an air purification bin of the sealed combustion system through an air pressure pipe. The method comprises the following steps: in a whole machine debugging stage, setting the pressure of a zero-position adjusting spring of a command valve of the pneumatic gas valve to be a negative value; in the operation stage of the water heater, whether the combustion flame is out of flame or not is determined based on the ratio of the gas flow to the air flow; the pneumatic gas valve is closed by the controller in response to a combustion flame off-flame stall. When the smoke pipe is seriously blocked, the pneumatic gas valve can be closed, so that the whole machine is shut down, and the gas heating water heater is protected.

The invention discloses an ammonia burner based on plasma catalytic ammonia cracking and zoning regulation and control, and relates to the field of aero-engine combustion chamber structures. The head is combined with a staged combustion technology and a plasma and ammonia catalytic cracking concept, and is one of effective methods for keeping the combustion chamber to work stably, reliably and effectively with low emission. Comprising a flame tube casing serving as a burner body, a first-stage swirler, a second-stage swirler and a third-stage swirler are arranged on the front portion of the flame tube casing, an ammonia gas supply nozzle is arranged in the first-stage swirler, a metal cracker is arranged on the periphery of the ammonia gas supply nozzle, and therefore a plasma discharge area is formed between the ammonia gas supply nozzle and the metal cracker; a plurality of main combustion holes and a plurality of mixing holes are formed in the middle of the side wall of the flame tube case. The stability, ignition performance and temperature uniformity of the ammonia combustor are improved, and the ammonia combustor has the advantages of being high in ignition and flameout capacity, low in emission, reliable in structure and the like and is suitable for efficient clean combustion systems in the fields of aviation, energy and the like.

The invention discloses a method for improving jittering in the flameout and shutdown process of a diesel engine, and belongs to the technical field of diesel engine control. The method for improving jittering in the flameout and shutdown process of the diesel engine comprises four subsystems including an ECU module, an electronic control unit module, a valve body control module and a post-processing module; the ECU module is responsible for monitoring and identifying data returned by the sensor and sending corresponding operation to the electronic control unit module according to the data; the electronic control unit module is responsible for receiving data of the ECU module and controlling the valve body control module according to the data. In the flameout shutdown process, the electronic control unit automatically recognizes the flameout working condition of the diesel engine, so that the control instruction is sent to the exhaust brake valve and the in-cylinder brake valve to close the exhaust brake valve and the in-cylinder brake valve, and therefore the diesel engine can generate large air suction resistance in the flameout process to restrain and consume rotation energy of a flywheel; therefore, shaking generated in the flameout process of the flywheel is restrained and absorbed, and the diesel engine is prevented from being damaged.

The invention discloses an equipment forgetting reminding method and device, a vehicle and a computer readable storage medium, and relates to the technical field of vehicle intellectualization. The method comprises the steps that if it is detected that the vehicle is in a flameout state, metal object detection operation is executed on wireless charging equipment; and if the detection result of the metal object detection operation is that the metal object exists in the wireless charging area, sending an equipment forgetting prompt to a vehicle user. According to the metal object detection method, the detection result of the existence of the metal object on the wireless charging area is obtained through the metal object detection operation, and the device forgetting reminding is sent out based on the detection result. The energy consumption for detecting whether the equipment is forgotten on the wireless charging equipment or not when the storage battery is used for supplying power to the wireless charging equipment when the vehicle is in the flameout state is greatly reduced, and the power management after the vehicle is flameout is optimized.

The invention discloses a vehicle engine flameout prevention control method and device, a vehicle comprises an automatic transmission, the automatic transmission comprises a hydraulic torque converter and a starting clutch, and the hydraulic torque converter comprises a turbine. When the WRD working condition of wrong direction occurs during vehicle gear shifting, a turbine may reversely rotate, so that the load of an engine is increased, and the risk of flameout of the engine is caused. On the basis, whether the turbine reverse rotation working condition exists or not after vehicle gear shifting is firstly recognized. Meanwhile, no matter whether the WRD working condition occurs or not, the starting clutch is controlled to be connected after gear shifting of the vehicle, so that the power response speed of the vehicle is increased. And furthermore, when it is confirmed that the turbine reverse rotation working condition exists, the flameout risk degree of the vehicle is pre-estimated. When the flameout risk degree of the vehicle meets the preset condition, it is indicated that the flameout risk degree of the vehicle is high. At this time, the target oil pressure of the starting clutch is controlled to be reduced so as to open the starting clutch, cut off power transmission, relieve the turbine reverse rotation phenomenon and prevent the vehicle engine from stalling.

The invention provides a combustion chamber which belongs to the technical field of aero-engines and comprises a flame tube head, a flame tube outer ring, a flame tube inner ring and a fuel nozzle, a sliding sleeve is arranged on the outer side of the flame tube head, and a swirler assembly is slidably mounted on the outer surface of the end, close to a flame tube, of the fuel nozzle. The sliding sleeve is installed on the outer surface of the swirler assembly in a sliding mode. A first swirler and a second swirler are arranged on the swirler assembly, an air inlet groove is formed in the sliding sleeve, and the air inlet groove is communicated with or disconnected from the second swirler. The sliding sleeve slides on the swirler assembly, so that only the first swirler can intake air when the combustion chamber flame tube is in a small state; in the large state, the air inlet groove in the sliding sleeve communicates with the second swirler, simultaneous air inlet of the first swirler and the second swirler is achieved, and therefore the contradiction between smoking in the large state and low-speed lean oil flameout in the small state in a high-oil-gas-ratio combustion chamber is solved.

The utility model discloses a handheld earth boring earth boring machine with a safety protection structure, which comprises an earth boring earth boring machine body and an earth boring bit, the earth boring earth boring machine body comprises a support, an engine, a reduction gearbox, an accelerator switch and a flameout switch, the engine, the reduction gearbox, the accelerator switch and the flameout switch are arranged on the support, and a crankshaft of the engine is connected with a centrifugal clutch used for transmitting power to the reduction gearbox. The engine is provided with an igniter, the igniter is provided with a control chip, the control chip is connected with a rotating speed sensor and a reset switch, the support is provided with a safety braking device, the safety braking device comprises a shell, a triggering piece, a braking switch and a triggering rod, and the triggering piece is arranged in the shell and can rotate relative to the shell. The trigger rod is connected with the trigger piece and can drive the trigger piece to rotate, a reset spring is arranged on the shell, and when the trigger piece is driven by the trigger rod to rotate to the position in contact with the brake switch, the brake switch is triggered to be in a switched-on state, so that the speed of an engine is reduced to an idling state, and good safety protection is achieved.

The invention relates to the technical field of gas turbines, in particular to a flameout control method, a flameout control device and flameout control equipment of a full-model gas turbine and a storage medium. Therefore, whether the gas turbine has the flameout risk or not can be predicted from two dimensions, the risk supervision efficiency of the gas turbine is improved, and when it is predicted that the gas turbine has the flameout risk, the running state of the gas turbine is adjusted, the flameout risk of the gas turbine is reduced, and the working efficiency of the gas turbine is improved. The technical problem that in the prior art, whether the gas turbine flames out or not cannot be supervised, and the working efficiency of the gas turbine is affected is solved.

The invention discloses a method, device and equipment for avoiding engine flameout and a storage medium, and the method comprises the steps that the clamping stagnation state of a mixing valve is judged according to the current target opening degree and the actual opening degree; according to the clamping stagnation state of the mixing valve, PID control calculation is conducted on the opening degree error between the current target opening degree and the actual opening degree; and when it is judged that the mixing valve is opened in the stable clamping stagnation state, an integral item of PID control over the opening degree error is reset so as to avoid engine flameout. The method aims at solving the problems that in the prior art, due to the fact that a mixing valve of a low-pressure EGR system forms duty ratio overshoot when the mixing valve is opened due to clamping stagnation, the mixing valve is fully closed, external air does not enter an air cylinder, and an engine flames out or shakes, the method can effectively recognize that the mixing valve enters the clamping stagnation opening state from the clamping stagnation state, and the working efficiency of the low-pressure EGR system is improved. PID control adjustment is carried out on the mixing valve, and the problems of engine flameout and jittering caused by overshoot of the mixing valve are solved.

The invention discloses a low-power-consumption sentry monitoring method for an intelligent cabin and the intelligent cabin, and relates to the technical field of intelligent automobiles. A system-on-chip of the intelligent cabin comprises a first core and a second core, and the operation power consumption of the second core is lower than that of the first core. The method comprises the steps that when a vehicle flames out, operation of the hard disk video recorder is stopped, a second core takes over the use permission of a camera outside the vehicle to collect images of the surrounding environment regularly, whether the surrounding environment changes or not is monitored, and after it is monitored that the surrounding environment changes, the second core is switched back to a first core to operate the hard disk video recorder; after the hard disk video recorder records the video of the preset duration, the hard disk video recorder is turned off, the first core is switched to the second core, whether the surrounding environment changes or not is monitored again, and power consumption of sentry mode operation after vehicle flameout is reduced.

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.

The utility model provides a safety gas valve which comprises a valve body, a gas inlet channel, a gas outlet channel, a lower installation cavity and an upper installation cavity are arranged in the valve body, a ball valve is arranged in the gas outlet channel, an electromagnetic valve assembly is arranged in the lower installation cavity, the electromagnetic valve assembly is connected with an induction device through an electric control device, and the induction device is connected with the ball valve. The upper mounting cavity is correspondingly arranged above the lower mounting cavity, a valve rod connected with the ball valve is in clearance sealing connection in the upper mounting cavity, a bouncing valve element assembly is arranged in the valve rod, and the lower end of the bouncing valve element assembly penetrates out of the ball valve and is arranged above the electromagnetic valve assembly; the gas stove is reasonable and compact in structure, circulation of the ball valve and the gas outlet channel is controlled by rotating the ball valve through the valve rod, circulation of the ball valve and the gas inlet channel is controlled through cooperation of the electromagnetic valve assembly, the induction device and the bouncing valve element assembly, gas leakage caused by misoperation under the condition that the gas stove is shut down accidentally and is unattended can be avoided, and the safety of the gas stove is improved. The use is safer.

The invention discloses a combustion chamber flameout detection method and device, electronic equipment and a storage medium, and relates to the technical field of gas turbines. The method comprises the steps that the exhaust temperature dispersion degree of a turbine is calculated based on the exhaust temperatures of N temperature sensors arranged on the section of an outlet of the turbine; based on the first exhaust temperature moving average value of each of the N temperature sensors at the first time interval and the second exhaust temperature moving average value of each of the N temperature sensors at the second time interval, calculating the acceleration of each of the N exhaust temperatures; calculating a rotor acceleration of the turbine based on a first rotor speed average value of the turbine at the first time interval and a second rotor speed average value of the turbine at the second time interval; and determining a flameout detection result of the combustion chamber based on the exhaust temperature dispersion degree, the respective accelerations of the N exhaust temperatures and the rotor acceleration, so as to improve the accuracy of flameout detection of the combustion chamber and reduce the cost of flameout detection of the combustion chamber.

The invention discloses a combustion optimization control system and method for a dual-fuel micro-jet engine, and relates to the technical field of dual-fuel engines, the combustion optimization control system comprises a working condition monitoring module, a fuel injection compensation control module and a fuel execution module, the fuel injection compensation control module is used for dynamically correcting fuel injection parameters based on real-time working conditions, and the fuel execution module is used for dynamically correcting fuel injection parameters based on real-time working conditions. The fuel injection compensation control module comprises an injection parameter prediction unit, a compensation amount calculation unit and an injection correction unit. According to the invention, a fuel injection compensation control module is installed, a support vector machine model is adopted to predict reference parameters and is combined with dynamic compensation of a self-adaptive controller, millisecond-level fuel injection correction is realized, in the fuel-gas mode switching process, the combustion phase offset is controlled within + / -0.8 degree CA, the rotating speed fluctuation rate is reduced to be below 5%, and the fuel-gas mode switching is realized. And the torque sudden change and flameout risks are effectively eliminated.

The invention relates to the technical field of engine control, and discloses an oil pump control method and device, a hydraulic system and engineering mechanical equipment. An engine is matched through oil pump power self-calibration discharge, that is, the oil pump flow is changed by adjusting oil pump control current, the oil pump control current is slowly changed, and the power limit of the engine is captured; the optimal torque matching of the engine and the oil pump is realized, the oil pump control current corresponding to the rotating speed of all vehicle engines is obtained, the corresponding oil pump control current can be output according to the rotating speed of the engine in the subsequent engineering vehicle use process, the problems of engine flameout and speed reduction can be solved, and the power utilization rate of the engine can be improved.

The utility model provides a pot support and a burner comprising the pot support. The pot support comprises a plurality of supporting legs and further comprises a heat insulation part, and the heat insulation part can surround the periphery of a dry-burning-resistant probe of the burner so as to block high-temperature flue gas and avoid the problem that heat of the high-temperature flue gas affects the induction temperature of the dry-burning-resistant probe, and then false alarm is generated. The heat insulation part is located among the supporting feet, the supporting feet extend towards the heat insulation part and are connected to the heat insulation part, and therefore the temperature of the heat insulation part can be transmitted to the supporting feet with the low temperature in time. The axes of the upper surfaces of the inclined parts of the supporting legs intersect at the same intersection point, the upper end of the heat insulation piece is located or lower than the horizontal plane where the intersection point is located, and the situation that when the pot bottom of a pot is placed on the pot support, the heat insulation piece is impacted by the pot bottom and broken is reduced. The burner comprises the pot support, unnecessary flameout of the burner due to the fact that the dry-burning-resistant probe is affected by high-temperature smoke can be reduced, and the use experience of a user is improved.

A tractor gear shifting safety redundancy protection system comprises a controller, an FNR reversing handle and an engine ECU, the FNR reversing handle outputs an N-gear signal to a bus, the engine ECU transmits rotating speed information to the bus, the controller receives and stores the rotating speed information of the engine at the previous moment, after the N-gear signal is obtained, whether the current rotating speed changes compared with the previous moment or not is compared, and if yes, the engine ECU transmits the rotating speed information to the bus. And judging whether the N-gear signal is invalid or not, and giving an instruction. And if the rotating speed information does not change, the controller performs data interaction with the engine ECU according to a preset CAN communication protocol, and sends a flameout instruction.

The application discloses a high-voltage load-tap switching device and relates to the technical field of tap switches. The high-voltage load-tap switching device comprises a switching mechanism, a driving mechanism and a recovery mechanism. The switching mechanism is used for completing tap switching of high voltage. The driving mechanism provides power for switching of the switching mechanism. In the application, the second moving contact is separated from the second static contact to generate an electric arc before the first moving contact is switched, and the arc is extinguished by triggering a pressure accumulator pump to release sulfur hexafluoride gas. The sulfur hexafluoride gas has the characteristics of cooling, ion removal and flameout prevention, and the arc is quickly extinguished to create an arcless environment for high-voltage switching of the first moving contact, thereby avoiding ablation of the contact by the arc and improving the safety of equipment operation. After the arc is extinguished, the negative pressure pump is triggered by meshing transmission of the internal gear and the rack to suck the sulfur hexafluoride gas in the left cavity into the recovery tank, so that the gas is quickly recovered. The economic loss caused by waste of the gas is reduced, the risk of equipment aging is lowered, and the service life of the equipment is prolonged.

This application claims protection for a pressure vessel, a lighter, and an ignition gun. The pressure vessel includes a gas box and a base plate. The gas box includes a gas box body and a threaded sleeve, which is housed within the gas box body and integrally injection molded with the gas box body. The threaded sleeve is used to connect to an exhaust valve. The base plate is connected and sealed to the gas box body, and a cavity is formed between the gas box body and the base plate to contain fuel. The cavity communicates with the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of fuel. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the accuracy of the threaded sleeve's assembly position on the gas box body, avoiding tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body. This improves the sealing performance and assembly reliability of the pressure vessel, effectively solving common problems such as poor flameout and ignition failure, and providing a reliable guarantee for the performance improvement of lighters, ignition guns, and other products.

The utility model discloses a third-generation hot air anti-freezing device which comprises a fan device. The fan device comprises a combustion chamber, one end of the combustion chamber is provided with an air supply fan, and the other end is provided with a guide plate connected with a heat conduction pipe; the heat conduction pipe is connected with a heat supply device, the heat supply device comprises a main pipe, two sides of the main pipe are respectively connected with a plurality of branch pipes, the branch pipes are connected with plant planting areas, and the main pipe and the branch pipes are provided with a plurality of heat supply through holes. Remote simultaneous frost prevention and freezing prevention of a plurality of plant planting areas can be achieved, frequent moving of the fan device through a moving device is not needed, labor cost is saved, and waste of labor cost and fuel resources of re-ignition caused by flameout and waiting for cooling of the fan device in order to prevent workers from being scalded by moving the fan device during combustion is not needed. The risk of frost damage and frostbite of vegetation due to the fact that the movable fan device cannot provide heat for the vegetation area in time is also avoided; and the heat can be accurately conveyed to the vegetation area needing the heat, and heat waste is avoided.

This invention discloses a production line for assembling irregularly shaped fireworks and its assembly method. The production line, arranged sequentially along the outer cylinder's flow direction, includes an outer cylinder feeder, an outer cylinder deformation machine, a variable-pitch conveyor, and an outer cylinder fuse-setting machine. This invention overcomes the technical bias of "fuse-setting first, deformation later" in traditional automated fireworks production. It creatively uses the outer cylinder deformation machine to first convert the conventionally arranged fireworks outer cylinder into an irregularly shaped arrangement and shape it. Then, using a variable-pitch conveyor equipped with a specific variable-pitch adjustment mechanism, it smoothly transfers the irregularly shaped arrangement to the outer cylinder fuse-setting machine for drilling and fuse insertion while strictly maintaining this arrangement. The technical solution of this invention fundamentally eliminates the major safety hazards such as wear, flameout, and flashover caused by forced deformation and pulling of the fuse in traditional processes. It not only significantly improves the reliability of irregularly shaped combined fireworks but also possesses strong size compatibility and ease of changeover, greatly improving production efficiency.

The invention discloses an intelligent control method for a multi-fuel-tank fuel system of an agricultural tractor, and relates to the technical field of agricultural machinery fuel control, and the method comprises the following steps: under the control of a processor, taking an ignition switch state as a trigger: obtaining a first environment temperature during power-on, and outputting a fuel pipeline switching valve opening / closing signal in combination with the fuel quantity of a low-grade fuel tank; pre-selecting an oil path; after starting, the heating electromagnetic valve is opened and closed according to the temperature of cooling liquid, and the high-grade fuel tank is switched back based on the temperature of fuel oil, so that heating and closed-loop management of an oil path are realized; and when the power is off, taking a second environment temperature, forcibly switching to a low-grade oil way when the temperature is less than or equal to 4 DEG C, operating for a set time, and then flameout, so that the system retains low-grade fuel oil. By automatically switching fuel oil and heating control, reliable starting and economical operation of the tractor in a low-temperature environment can be ensured, low-grade fuel oil is reserved in a pipeline after flameout, and difficulty in restarting is avoided.

The invention discloses a local oil-rich ignition and flameout device and an aero-engine combustion chamber, and belongs to the technical field of aero-engine combustion chambers, the device comprises two oil gas generators arranged on the two sides of an ignition nozzle, and each oil gas generator comprises a nozzle and a cooling cover arranged on the periphery of the nozzle in a surrounding mode. The cooling cover is provided with a plurality of air inlet holes with tangential deflection angles in the circumferential direction, and the air inlet holes are used for introducing air in the outer ring channel and forming rotational flow airflow. An outlet of the nozzle extends out of the air outlet of the cooling cover, and an annular gap is formed between the outer wall of the nozzle and the inner wall of the air outlet, so that air is mixed with injected fuel oil at the outlet of the nozzle, and a stable oil-gas mixing area is generated. The injection paths of the two oil-gas generators oppositely face each other in the downstream direction of the ignition nozzle, a local oil-rich area is formed at the ignition nozzle, rapid and stable ignition can be achieved under ignition and low working conditions, the flameout risk is reduced, and the working reliability and adaptability of the combustion chamber are improved.

The utility model discloses an ignition assembly of a gas stove basin system, which comprises a gas-collecting hood body, a gas-collecting hood cover, a gas-collecting hood cover and a gas-collecting hood cover, the ignition bracket is separably fixed on the gas-collecting hood body and matched with the opening, and a horizontal gas inlet can be formed in the side part of the gas-collecting hood body; the first assembly hole is formed in the ignition bracket and is used for fixing an ignition needle; and the second assembly hole is formed in the ignition bracket and is used for fixing a flame-out protection probe. The ignition needle is fixed on the ignition support through the first assembly hole, and the flameout protection probe is fixed on the ignition support through the second assembly hole, so that the modular design of the ignition piece and the flameout piece is formed, compared with the prior art, the ignition needle and the flameout protection probe are indirectly and separably fixed on the brazier through the ignition support, and the ignition needle and the flameout protection probe are fixed on the ignition support through the second assembly hole. Therefore, the assembly difficulty caused by the too small space of the inner cavity of the brazier is avoided.