44 results about "Ignition voltage" patented technology

Safety element, in particular for a motor vehicle power line, comprising - a control circuit and - a pyrotechnic fuse (2), wherein - the control circuit comprising a printed circuit board (24) - at least one measuring sensor, - at least one temperature sensor and - at least one processor (26) evaluating the measuring sensor and the temperature sensor, - the pyrotechnic safety device (2) - a first connecting tab (8a), - a second connecting tab (8b), - a separation point (16) arranged between the connecting tabs (8a, b), and - has a pyrotechnic drive acting on the separation point (16), wherein - the drive (12) has ignition contacts (14) on its side facing away from its explosive surface (22), and characterized in that, - the pyrotechnic fuse (2) is attached directly to the circuit board (24) at least in a form-fitting manner, - that the drive (12) is designed in such a way that it can be triggered both intrinsically and extrinsically, in which - in the event of an intrinsic triggering, the processor (26) applies an ignition voltage to the drive (12) via a connection between the processor (26) and the ignition contacts (14) and - the ignition contacts (14) are set up for connection to an external ignition signal and the external ignition signal is applied to the ignition contacts (14) during external triggering.

The invention discloses an electrolytic preheating-electrolytic ignition method for a three-electrode hydroxylamine nitrate liquid propellant, and belongs to the field of liquid rocket engines and electrochemistry. Three electrolysis electrodes are arranged in the electrolysis chamber and comprise two positive electrodes and one negative electrode, so that two groups of electrolysis electrode pairs are formed. The method comprises the following steps: injecting a nitric acid hydroxylamine-based liquid propellant into an electrolysis chamber, and electrifying a group of electrolysis electrodes to start electrolysis preheating; after the preset switching time is up, closing the current working electrolysis electrode pair, and switching to another group of non-working electrolysis electrodes to continue electrolysis; and low-voltage and rapid electrolytic ignition is realized. According to the three-electrode electrolysis structure, the time for ignition and reaction to reach the highest temperature can be shortened, and the system response speed is increased; the preheating and ignition voltage can be changed, and the large voltage adjusting and optimizing space is achieved; meanwhile, the electrolytic ignition current is relatively stable, and the instantaneous power consumption is small; and electrolysis power consumption can be saved, electrolysis electrode loss is reduced, and reuse of the electrode is facilitated.

The invention discloses a multi-insurance isolation triggered electromechanical fuze circuit system which comprises a power supply circuit, an ignition circuit and an isolation trigger circuit, and the isolation trigger circuit comprises a multi-insurance signal circuit and an ignition trigger circuit. The multi-fuse circuit has the advantages that the multi-fuse circuit has multiple fuses, isolated triggering and adjustable instantaneity, N paths of multi-fuses can be extended, the multi-fuse circuit is mainly used for monitoring and judging various pin pulling and time sequence states, signal voltage reference grounds of the multi-fuse circuit can be different from one another so as to ensure that an ignition circuit is triggered safely and reliably, a plurality of optocouplers and current-limiting resistors are adopted, and the safety of the ignition circuit is improved. The filter capacitors form a multi-path isolation trigger circuit, interference between signal voltage and ignition voltage is effectively isolated, the function of multiple insurance state confirmation can be achieved, the accident that an electromechanical fuse explodes by mistake is effectively avoided, and the circuit is simple in structure, low in power consumption, low in component cost and safe and reliable in performance.

The invention relates to a high-reliability ignition control system based on a dual-detection dual-drive mechanism, and belongs to the technical field of hardware circuit design. The test system receives a data stream signal sent by the PC monitoring system through a serial port cable and then sends a response data transmission signal to the high-reliability ignition control system through a communication cable; the high-reliability ignition control system carries out power supply identification signal detection and state identification signal detection, if the high-reliability ignition control system supplies power to a battery and is in a release state, an ignition control process is started, and an ignition voltage signal is fed back to the test system through a communication cable; otherwise, ignition control is not carried out; the test system processes the ignition voltage signal to obtain an ignition voltage value, and inputs the ignition voltage value to the PC monitoring system for display; and the ignition control adopts a double-switch control mode of an electromagnetic relay and a solid relay to realize short circuit and disconnection of an ignition circuit so as to ensure accurate control and high reliability of ignition. The device has the advantages of high safety, high reliability, multi-path ignition control, mistaken ignition prevention and the like.

The invention discloses an ignition method of a remote plasma source based on multi-process parameter regulation and control in the technical field of remote plasma sources, which comprises the following steps: according to different gas types, acquiring optimized gas pressure P, gas flow Q, chamber gas temperature T and minimum ignition breakdown voltage Vmin by an ignition regulation and control parameter acquisition method; p, Q and T in the reaction cavity are adjusted according to the optimized P, Q and T, and an ignition voltage threshold value is adjusted according to Vmin; and ignition is conducted according to the ignition voltage threshold value, and after ignition succeeds, P, Q and T are adjusted to preset technological parameters. According to the ignition method, through multi-parameter coordinated regulation and dynamic threshold design, the equipment damage risk caused by high-voltage ignition is reduced, the ignition success rate and the system stability are greatly improved, and the adaptability and reliability of equipment are remarkably improved.

The application provides a plasma electrically generated fire preparation system, process and application, the system comprises a working condition detection module, a multi-layer grid discharge structure module, a discharge parameter decision module and a high-voltage discharge control module; the working condition detection module is used for real-time detection of the gas working condition parameters in the ignition cavity; the multi-layer grid discharge structure module is arranged in the ignition cavity and is used for forming a plurality of metal mesh grid electrodes with optional spacing; the discharge parameter decision module is used for determining the ignition discharge parameters according to the current gas working condition parameters; the high-voltage discharge control module is used for applying high-voltage pulse voltage to the selected metal mesh grid electrode according to the ignition discharge parameters to complete the discharge fire generation process; the application sets the multi-layer metal mesh grid electrode and combines the gas working condition parameters to make self-adaptive decisions on the discharge layer and the ignition voltage, improves the success rate and stability of the plasma ignition, and enhances the adaptability of the system to the complex gas working condition changes.

The embodiment of the application discloses a detonation driving shock wave wind tunnel timing ignition system and an ignition method, the ignition system comprises: a timing ignition module, which is used for storing ignition energy and sequentially detonating a plurality of ignition filaments according to preset ignition information; a monitoring and predication module, which is used for monitoring environmental parameters before the ignition filaments are detonated and / or during the interval of the detonation of the plurality of ignition filaments, and predetermining the start and stop of subsequent ignition operations according to the monitoring result; a parameter monitoring module, which is used for monitoring the ignition environment and / or ignition parameters and outputting the monitoring result; a discharge module, which is used for discharging the ignition energy stored in the timing ignition module when the monitoring and predication module predetermines that subsequent ignition operations need to be stopped; and a control module, which is used for monitoring the ignition process and controlling the completion of the ignition process; and the preset ignition information comprises ignition time intervals and ignition voltages of each ignition channel. The embodiment of the application realizes the effect of improving the stability and uniformity of an experimental flow field and ensuring the reliability and stability of an ignition process.

The application discloses an online performance detection method and system of an engine ignition system, which comprises outputting a driving signal to a measured ignition system; collecting a current signal of the measured ignition system to generate a current waveform and extracting a characteristic parameter according to the current waveform; comparing the characteristic parameter with a preset standard parameter range and outputting a diagnosis result of the measured ignition system according to a comparison result; and the characteristic parameter comprises a current amplitude, a response time and a spark duration. By collecting a current waveform of a secondary loop of an ignition coil and extracting three characteristic parameters of the response time, the current amplitude and the spark duration, and comparing the three characteristic parameters with a preset standard range, the ignition voltage, the response time and the spark duration of the ignition system can be detected without disassembling and contacting a spark plug on an engine assembly production line.

This application discloses a high-durability composite spark plug electrode material, its preparation method, and its application. It belongs to the technical field of spark plug electrode material preparation. The electrode material of this invention consists of a core layer and a surface composite layer. The core layer is a dispersion-strengthened alloy with iridium as the matrix, doped with rare earth oxides and refractory metals, possessing high-temperature strength, creep resistance, and a short melting point. The surface composite layer is a gradient functional material, consisting of a transition layer, an intermediate functional layer, and a surface nanolayer from the inside out. This invention achieves a strong metallurgical bond and a smooth transition of performance between the core layer and the surface composite layer through the synergistic design of the core layer components, the optimization of the multi-layer gradient structure of the surface composite layer, and the use of a special preparation process. This significantly improves resistance to electrical erosion and chemical corrosion, reduces ignition voltage, ensures the ignition stability and durability of the engine under extreme operating conditions, improves combustion efficiency, and achieves increased power and reduced fuel consumption.

The utility model belongs to the technical field of impedance matchers, and particularly relates to a high-voltage ignition starter of a plasma reaction cavity and an impedance matcher. The ignition starting device is applied to a plasma reaction cavity and comprises a control module, a driving module, an ignition module and a matching module, the control module is used for controlling the ignition module, and when the ignition module is started, an ignition voltage is provided for the plasma reaction cavity through a power frequency power source; and meanwhile, the control module controls the driving module to drive the matching module to provide impedance matching signals for the plasma cavity, so that the ignition starting device provided by the utility model can realize rapid starting of the plasma reaction cavity, and provides the impedance matching signals after ignition starting.

The invention discloses an airborne launching time sequence control system with multiple control modes, and relates to the technical field of airborne time sequence control power distribution, and the system comprises an ignition power supply circuit and a working power supply circuit. The output end of the ignition power circuit is connected with an ignition power line, the ignition voltage and current detection circuit is arranged on the ignition power line, the ignition power line is connected with a to-be-ignited load through the isolation drive circuit, and the output detection circuit is arranged at the output end of the isolation drive circuit. The output end of the working power supply circuit is connected with the controller, the input end of the switching value input detection circuit is connected with the flight control computer and the ignition load, and the output end of the switching value input detection circuit is connected into the controller; the controller is connected with the control end of the isolation driving circuit, the controller is further connected with the communication circuit, the application programming circuit and the onboard temperature detection circuit, and the communication circuit is further connected with the flight control computer. According to the invention, the technical problems of low reliability and high control difficulty in the prior art are solved.

Control unit comprising a controller (11) and a memory unit, wherein the controller (11) and the storage unit (21) are supplied with energy independently of each other; the controller (11) is designed to provide the storage unit (21) with an output signal (S21) representing at least one parameter; the storage unit (21) is configured to store at least one parameter represented by the output signal (S21); the controller (11) is further configured to receive a readout signal (S41) representing at least one stored parameter from the storage unit (21) after a reset of the controller (11); the control unit is designed to be installed in a vehicle; and which at least one parameter represents a state of a steering wheel lock, a speed of the vehicle, a rotational speed of a drive of the vehicle or the ignition voltage of the vehicle.

The invention relates to a method for operating a system for generating electromagnetic waves in the microwave range, wherein the system comprises a pulse generator for generating electrical pulses, a microwave generator (14) for generating microwaves, and a transmission line (13) between the pulse generator (10) and the microwave generator (14), wherein the method comprises: blocking a voltage output from the pulse generator (10) to the transmission line (13); after the blocking of the voltage output: outputting a voltage from the pulse generator (10) to the transmission line (13), wherein the voltage is below an ignition voltage of the microwave generator (14), in order to precharge the transmission line (13); after the precharging of the transmission line (13): outputting a voltage to the transmission line (13), said voltage being above the ignition voltage of the microwave generator (14), such that the microwave generator (14) generates electromagnetic waves in the microwave range.

An ignition device for a straddle-type vehicle in which a fuel tank is supported on an upper side of a pair of left and right tank rails of a vehicle body frame and in which an engine is supported on a lower side of the pair of left and right tank rails. The ignition device includes an ignition plug provided in the engine and configured to ignite an air-fuel mixture, an ignition coil configured to apply an ignition voltage to the ignition plug, and a plug cord configured to connect the ignition plug and the ignition coil. The ignition coil is located below the pair of left and right tank rails and located on a lateral side of a cylinder head cover of the engine, in a top view.

The invention relates to a method for contactless ignition of an electric arc (1) between an electrode (2) of a welding head (3) and a material surface (4) of a workpiece (5) and a welding device (6). A first ignition voltage pulse having a first polarity or a second polarity is generated between the electrode (2) and the material surface (4). The electric arc (1) is maintained after ignition of the electric arc in the second polarity or in an alternating polarity. In the event of ignition failure, a sequence of ignition voltage pulses is generated according to a sequence scheme until the electric arc (1) is successfully ignited after the first ignition voltage pulse, wherein the sequence scheme comprises ignition voltage pulses having the first polarity and ignition voltage pulses having the second polarity, and an ignition pause is provided between the ignition voltage pulses having the first polarity and the ignition voltage pulses having the second polarity.

The application is suitable for the technical field of vehicle control, and provides a control method and device of an engine in a vehicle, a storage medium and the vehicle.The method comprises the following steps: monitoring the ignition voltage of the engine in the vehicle, and controlling the engine differently according to the size of the ignition voltage; compared with the prior method of directly starting the engine after receiving a starting instruction, the application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage, that is, determines the corresponding control strategy according to the current working condition of the vehicle, so that the control of the engine is more in line with the current working condition, the intelligence of the engine control is improved, and the vehicle failure caused by the engine is naturally reduced.

The application provides a transformer oil electric arc ignition integrated automatic temperature control test device, which comprises a test box, an oil cup, a heating unit, an oil temperature detection unit, a test box temperature probe, a heating unit temperature probe, an electric arc electrode, an ignition power supply, a power adjusting unit and a controller; the controller controls the heating power of the heating unit to control the transformer oil temperature according to the transformer oil temperature collected by the oil temperature detection unit, the first ambient temperature collected by the test box temperature probe and the second ambient temperature collected by the heating unit temperature probe, and combines the preset oil temperature parameters; further, the controller judges whether to feed back the ignition permission signal to the ignition power supply according to the preset error parameters and time parameters, and if yes, triggers the ignition power supply to apply the ignition voltage or pulse energy to the electric arc electrode for ignition. The application solves the problems of oil temperature lag, oil temperature overshoot, non-uniform ignition time and difficult complete tracing of test data in the prior art.

The invention designs an ignition device debugging tool capable of adjusting an ignition gap and an inspection method aiming at the use problem of an accompanying test piece in the assembling, debugging and testing processes of an aero-engine ignition device. Compared with a traditional ignition electric nozzle, the electrode, the semiconductor block, the spring and the fixing base have the advantages of being simple in structure, convenient to assemble, maintain and replace and adjustable in ignition voltage, and the ignition electric nozzle is suitable for various ignition devices. Through comparison of performance test and system joint test results, correctness of design and assembly is verified, it is clear that the performance is stable and the service life is reliable through a large amount of experimental data, and the problems of poor sparking plug suitability, resource conflicts, limited service life and the like in the ignition device testing process are solved.

Embodiments reduce the draining of HF ignition energy via a data line for data transmission between a welding device and another part of a welding assembly. A decoupling apparatus is provided, in which a first data line portion of the data line is connected to a first coupling element and a second data line portion of the data line is connected to a second coupling element. The first coupling element and the second coupling element are interconnected via a wireless coupling path for galvanic separation of the data line, and a separate power supply is provided for each of the first coupling element and the second coupling element. The power supplies of the first coupling element and the second coupling element are decoupled from one another for a HF voltage on the data line as a result of the HF ignition voltage.

The application discloses a three-electrode hydroxylammonium nitrate-based liquid propellant electrolysis preheating-electrolysis ignition method and belongs to the fields of liquid rocket engines and electrochemistry. Three electrolysis electrodes, including two anodes and one cathode, are arranged in an electrolysis chamber to form two groups of electrolysis electrode pairs. After hydroxylammonium nitrate-based liquid propellant is injected into the electrolysis chamber, electrolysis preheating is started by electrifying one group of electrolysis electrode pairs; when a preset switching time is reached, the electrolysis electrode pairs currently working are turned off, and the electrolysis is continued by switching to another group of electrolysis electrode pairs which are not working; and low-voltage and fast electrolysis ignition is realized. The three-electrode electrolysis structure can shorten the time for ignition and for the reaction to reach the highest temperature, improve the system response speed, change the preheating and ignition voltage, has a large voltage adjustment and optimization space, has a relatively stable electrolysis ignition current, has a small instantaneous power consumption, can save electrolysis power consumption and reduce electrolysis electrode loss, and is favorable for the reuse of the electrodes.

The application discloses a kind of vehicle point fire detection methods.Method comprising the following steps: MCU is collected to the voltage Vb of vehicle battery;MCU is compared with the threshold voltage Vt to the battery voltage Vb collected, and it is judged as vehicle type;Set off fire voltage initial value is Vb1, ignition voltage initial value is Vb2, voltage rising speed initial value is Sv1, MCU continuously detects battery voltage Vb, and rising speed is used to judge whether vehicle is ignited;Detection voltage drop speed Sv2 is used to judge whether vehicle is extinguished.The application obtains the voltage value of vehicle battery by accessing to vehicle cigarette lighter interface, without professional personnel connecting installation ignition line, and the point fire detection of vehicle can be realized;And through the determination of threshold voltage and the real-time updating of ignition voltage and extinguishing voltage, the misjudgment problem caused by the aging of vehicle generator and battery is avoided, and the detection accuracy is improved.

The invention discloses a direct current sputtering power supply and process equipment. The DC sputtering power supply comprises a boost circuit, the boost circuit comprises a transformer, and the transformer comprises a first secondary winding and a second secondary winding which are connected in series; the first secondary winding is used for outputting sputtering voltage in the sputtering stage, the sputtering voltage is equal to or larger than a preset sputtering voltage threshold value and smaller than a preset ignition voltage threshold value, the diameter of the first secondary winding is larger than a preset first diameter threshold value, and the first diameter threshold value is the diameter corresponding to the sputtering current threshold value; the first secondary winding and the second secondary winding are connected in series and used for outputting ignition voltage in the ignition stage, the ignition voltage is equal to or larger than an ignition voltage threshold value, the diameter of the second secondary winding is equal to or larger than a preset second diameter threshold value and smaller than the first diameter threshold value, and the second diameter threshold value is the diameter corresponding to the ignition current threshold value. The volume of the transformer (including the magnetic core) can be reduced, and the space pressure is reduced.

The invention relates to a vehicle ignition control system and method, the system comprises a power supply unit, an electronic control unit, an ignition unit, an ignition coil and a spark plug, the ignition unit comprises a first switch and an ignition cut-off circuit; when the electronic control unit receives a power switch off (key off) signal according to the operation of a user, the electronic control unit not only turns off the first switch and stops the ignition current of the ignition coil, but also can limit the ignition voltage at the two ends of the first switch at a relatively low level by the ignition breaking circuit; therefore, the electronic control unit can avoid misjudgment of the ignition voltage, so that the problem of engine reversion is avoided.

The invention discloses a high-durability composite spark plug electrode material and a preparation method and application thereof. Belongs to the technical field of spark plug electrode material preparation. The electrode material is composed of a core layer and a surface composite layer. And the core layer is a dispersion strengthened alloy which takes iridium as a matrix and is doped with rare earth oxide and refractory metal, and has high-temperature strength, creep resistance and melting point. The surface composite layer is made of a gradient functional material and sequentially comprises a transition layer, a middle functional layer and a surface nanometer layer from inside to outside. According to the invention, through collaborative design of components of the core layer, multi-layer gradient structure optimization of the surface composite layer and adoption of a special preparation process, firm metallurgical bonding and smooth performance transition between the core layer and the surface composite layer are realized. The electric corrosion resistance and the chemical corrosion resistance are remarkably improved, the ignition voltage is reduced, the ignition stability and durability of an engine under extreme working conditions are ensured, the combustion efficiency is improved, and power improvement and oil consumption reduction are achieved.

Internal combustion engine with at least one arrangement consisting of a spark plug (5) and a spark plug connector, with a connector body (1) which has a first end section (2) for inserting one end of a high-voltage line (4) and a second end section (3) for receiving one end of a spark plug (5), wherein an electrical conductor for transmitting an ignition voltage from the high-voltage line (4) to the spark plug (5) is arranged between the first end section (2) and the second end section (3), wherein the electrical conductor has at least one inductor (6) as an electromagnetic interference suppression element, wherein the arrangement is held on or in a valve cover (10) of the internal combustion engine (11) or a spark plug well, and an end of a high-voltage line (4) is inserted into the first end section (2) of the connector body (1) and is electrically connected to the electrical conductor, characterized in thatthat the electrical conductor section, following the first end section (2), has at least two inductors (6) arranged at a distance from each other in the direction of the second end section (3), or at least one inductor (6) and at least one ohmic resistor (8), as electromagnetic interference suppression elements, the at least two inductors (6), or the at least one inductor (6) and the at least one ohmic resistor (8), being located in the region of one end of the spark plug well, wherein one of the at least two inductors (6), or the at least one ohmic resistor (8), is located in the spark plug well with an overlap of approximately 50% or 100% and another of the at least two inductors (6), or the at least one inductor (6), is located above the spark plug well.

An ignition coil with controllable ignition voltage and ignition energy comprises a direct-current power source E, an ignition switch K and a first switch element which are sequentially connected with a primary coil L1, a secondary coil L2 is in gap coupling with a spark plug, and an energy storage unit is further connected in a loop of the primary coil L1 in parallel. One end of the energy storage unit is connected with the ignition switch K, and the other end is connected with the first switch element. According to the ignition coil, capacitance energy storage ignition and inductance energy storage ignition TCI are combined, ignition energy of the capacitance energy storage ignition and ignition energy of the inductance energy storage ignition TCI are overlapped, ignition high voltage is generated through the capacitance energy storage ignition, ignition energy is generated through the inductance energy storage ignition, and therefore the ignition voltage and the ignition energy can be controlled respectively. And therefore, excellent ignition characteristics are formed. And different ignition energies can be obtained by controlling the charging current of the primary coil, so that the requirements of the engine on the ignition energies under different working conditions are met.

The invention provides an electromagnetic radiation safety assessment method for a helicopter fuel system. The method comprises the following steps: step 1, determining an external electromagnetic environment faced by the helicopter fuel system; 2, identifying a potential fire blast source; step 3, in the external electromagnetic environment, testing the minimum explosion voltage; 4, in the external electromagnetic environment, testing the coupling voltage of a fire blast source; 5, calculating the maximum coupling voltage of the fire blast source based on the coupling voltage of the fire blast source; and 6, comparing the minimum explosion voltage with the maximum coupling voltage, and evaluating the electromagnetic radiation safety of the fuel system. The invention provides a simple, convenient and economical electromagnetic radiation safety assessment method for a helicopter fuel system. The minimum explosion voltage and the maximum coupling voltage of an explosion source of the fuel system are obtained through comparison testing, and the electromagnetic radiation safety of the fuel system is assessed.

The invention relates to the technical field of automatic temperature control devices, and discloses a circuit test method with a dynamic threshold value, which comprises the following steps of: acquiring a relation between current and voltage when low voltage and high voltage are simultaneously started, constructing a current-voltage curve graph, starting a communication circuit through communication control, and sending a discharge instruction to a detonator. Closing an ignition circuit and a communication circuit; comparing and judging the state of a control branch, if the control branch is normal, the detonator current IOHV is greater than the dynamic threshold ITH (t), if the control branch is short-circuited, the detonator current IOHV is approximately equal to the IIT (t), and if the control branch is open-circuited, the ignition circuit and the communication circuit are closed; if the current is not changed but the ignition voltage cannot be transmitted to the detonator, reporting the state of the control branch, and if the control branch is detected to be damaged, forbidding detonation and discharging by the system.

An ignition device for a straddle-seat vehicle, wherein a fuel tank is supported on the upper side of a pair of left and right tank rails of a vehicle body frame, and wherein an engine is supported on the lower side of the pair of left and right tank rails. The ignition device includes a spark plug provided in the engine and configured to ignite an air-fuel mixture, an ignition coil configured to apply an ignition voltage to the spark plug, and an ignition cable configured to connect the spark plug and the ignition coil. The ignition coil is located, in a top view, below the pair of left and right tank rails and is situated on a side of a cylinder head cover of the engine.

The utility model belongs to the technical field of impedance matchers, and particularly discloses a high-voltage ignition starting device of a plasma reaction cavity and an impedance matcher, the ignition starting device is applied to the plasma reaction cavity and comprises a control module, a driving module, an ignition module and a matching module, the control module is used for controlling the ignition module, and the driving module is used for driving the ignition module. When the ignition module is started, ignition voltage is provided for the plasma reaction cavity through the radio frequency power supply, no extra power supply input is needed, and meanwhile the control module controls the driving module to drive the matching module to provide impedance matching signals for the plasma cavity. Therefore, the ignition starting device provided by the utility model can realize rapid starting of the plasma reaction cavity, and provides impedance matching signals after ignition starting.