406results about How to "Fast ignition" patented technology

A fuel injector having an integrated ignition device includes a first electrode pair for igniting fuel which is injected directly into a combustion chamber of an internal combustion chamber through spray-discharge orifices of the fuel injector. The first electrode pair is made up of a ground electrode and a center electrode which are set apart by a spark gap. The fuel injector and the ignition device are situated in a shared housing. The ignition device has at least one additional spark gap and/or an additional electrode pair.

A dense phase swirl pulverized coal burner comprises a primary air channel, a direct flow secondary air channel and a outermost swirl secondary air channel; and multiple levels of pulverized coal concentration rings are arranged axially at intervals along the oil gun casing in a straight tube section of the primary air channel, so that pulverized coal air flow is distributed thickly outside and thinly inside the primary air nozzle. In the invention, dense phase pulverized coal outside the primary air nozzle passes through guide vanes, forms disturbed flow, is ejected into a furnace and mixes with high temperature backflow flue gas rapidly and sufficiently at an outlet. Meanwhile, dilute pulverized coal air flow at the center is ejected into the furnace by direct flow, ensuring subsequent mixing and combustion of pulverized coal flow. The primary air nozzle and the secondary air nozzle are provided with cone flaring structures with certain angle to effectively control appropriate mixing of secondary air and pulverized coal. The invention has advantages of strong ignition and combustion stability, good coal adaptability, low nitric oxide emission, simple primary air channel structure and small resistance, which effectively slows wear rate of parts.

The invention discloses an in-situ combustion combustion-supporting ignition method. The method comprises the steps that an electric igniter is tripped in the preset position in an oil tube in a well; air is continuously injected into the well from the oil tube at a first preset speed, and after a liquid level in the well is pressed into a stratum, the electric igniter is started to heat the injected air; after the air is heated by the preset heating time, a power source of the electric igniter is turned off, the electric igniter is taken out, and the air is continuously injected at the first preset speed in the process of taking out the electric igniter; air is injected into the well from the oil tube at a second preset speed, meanwhile, iron pulverized coal is injected, and an oil layer of a heavy oil reservoir is ignited under the action of heat released by combustion of the iron pulverized coal and the air. Through the electric igniter, the oil layer is preheated, and water of near bore zones is reduced. The iron pulverized coal has the functions of profile correction and channeling blocking, combustion products are stored in holes, a gas entry profile continues to be adjusted, ignition is facilitated better, gas channeling is reduced, and meanwhile fast ignition is achieved.

A start-up injector for a turbine engine combustion chamber, said injector including a fuel injection circuit; and a fuel ignition circuit including a fuel injector supplied by the fuel injection circuit and a spark plug for igniting the injected fuel. The start-up injector also includes a partitioned enclosure including a first compartment in which the fuel is ignited by the spark plug and a second compartment separated from the first compartment by a thermally conductive partition; and a main combustion start-up circuit which includes at least one fuel injector supplied by the fuel injection circuit and opens into the second compartment of the enclosure such as to inject the fuel against the wall.

The present invention provides a fast, low-cost, small diverter capable of generating a relatively high impulse (1-5 N-sec) over a short time period. The diverter is adapted for installation in a projectile for steering the projectile in flight by ejecting an end cap or hot burning gases in response to control signals from a guidance system. In one embodiment, multiple diverters are arranged in one or more bands about a flying projectile such as a rocket. Each diverter includes a header assembly providing support for a plurality of electrical leads, a mounting surface either on the header assembly or on a sealing assembly, a reactive semiconductor bridge mounted on the mounting surface and providing an electrical path for the electrical leads at a certain voltage across the bridge, a diverter body supporting the header assembly and containing a prime, wherein the reactive semiconductor bridge and the prime permit a gap, and an end cap or a sealing assembly attached to the diverter body containing the propellant.

The invention relates to a monolithic oxidation catalyst for volatile organic compounds (VOCs) and a preparation method of the oxidation catalyst. The monolithic oxidation catalyst for the VOCs comprises a carrier, a catalyst coating uniformly embedded into the carrier and uniformly distributed on the surface of the carrier, and an active component and an auxiliary agent which are uniformly dispersed in the catalyst coating, wherein the carrier is a monolithic corrugated fiber paper carrier formed by rolling or laminating a corrugated fiber paper substrate. The preparation method of the catalyst provided by the invention has a simple process, low costs and easy industrialized realization; and the monolithic oxidation catalyst for the VOCs prepared by the method has excellent catalytic activity, thermal stability and water resistance, a high geometric specific surface area and a low catalyst density which is 60%-70% of that of a conventional cordierite material, and can be quickly ignited, thereby facilitating a quick catalytic oxidation reaction.

A synthetic liquid fuel for civil purpose is prepared from alcohol, H2O2, acetone, camphor extract or essence, and multifunctional additive through proportioning, sequentially mixing and stirring for 3-8 min. Its advantages are low cost, high heat value and no carbon deposit.

The invention relates to an ignition and combustion testing device, and aims to provide a device for ignition and combustion of a primary boron product with high energy density laser. The device comprises an ignition module, an atmosphere control module, a combustion diagnostic module, and a data recording module, wherein the ignition module comprises a high energy density laser device and a transparent ignition combustion tube, a laser tube is fixed on a base via a laser tube support frame, the transparent ignition combustion tube is arranged on an iron stand, and a sample bracket is arranged in the center of the transparent ignition combustion tube. The device provided by the invention can rapidly heat a primary boron product sample to a temperature above the boiling point of boron oxide in several milliseconds, which is far better than the conventional electric heating ignition manner, and can realize rapid ignition and complete combustion of the primary boron product. The laser device has low electric power, and can be used after being supplied with 220V family electricity, resulting in good generality. The laser heating range is centralized, and the energy utilization efficiency is high.

The invention provides an electric heating type three-way catalytic converter structure and a control method for reducing cold start emission based on a hybrid electric vehicle. The control method comprises the steps that a whole vehicle controller detects whether an ECU controls an engine to start or not through a CAN bus, if the fact that the engine starts is detected, the whole vehicle controller reads the current temperature T of a three-way catalytic converter and a battery SOC, and the current temperature T is compared with the set initiation temperature T1; if the current temperature Tis larger than the initiation temperature T1, it is judged that the engine is in a hot start state, the three-way catalytic converter does not need electric heating, and electric heating is stopped; and if the current temperature T is less than the initiation temperature T1, the engine is in a cold start state, at this time, the state of the battery SOC is judged based on CAN bus communication. The further processing method is also disclosed. According to the electric heating type three-way catalytic converter structure and the control method for reducing cold start emission based on the hybrid electric vehicle, an external heat source is provided for the three-way catalytic converter by utilizing a large capacity battery and high-voltage equipment on the hybrid electric vehicle, under thepremise that the dynamic property is met, the purpose that whole vehicle emission at the cold start stage is reduced is achieved, and accordingly the low-pollution property superiority of the hybridelectric vehicle is further exerted.

The invention provides a biomass briquette fuel. The biomass briquette fuel is formed by mixing biomass raw material particles with fuel additives, and then crushing, mixing, drying, extruding and granulating; the weight percentage of the biomass raw material particles is 90-95%; the weight percentage of the fuel additive is 5-10%; the biomass raw material particles are composed of saw dust, bamboo dust, straws and rice straws; and the fuel additives are composed of quick lime, a combustion improver and high clay. The biomass briquette fuel is low in dust content which is greatly lower than the dust content of the fuel coal, and also high in combustion value and advantageous for improving the efficiency and the output of a boiler.

The invention discloses a method for synthesizing in-situ formed ceramic particle reinforced iron-aluminum-based composites by laser combustion, belonging to the technical field of materials. The in-situ formed ceramic particle reinforced iron-aluminum-based composites are prepared by the following steps of: putting tungsten ore powder, iron powder, aluminum powder and carbon powder in a ball mill for milling to obtain a mixed powder material; and compressing the mixed powder material into a pressed compact, transmitting a high-energy laser beam by employing a CO2 laser processing machine to ignite the surface of the pressed compact and trigger self-propagating high temperature synthesis of the pressed compact. By the invention, two ceramic particle reinforced phases are simultaneously formed on one substrate, which shortens the preparation process of the composites, lowers material manufacture cost and facilitates large-scale production and application.

The embodiment of the invention relates to the technical field of electronic cigarettes, in particular to an electronic-cigarette power control method and an electronic cigarette. The electronic-cigarette power control method is used for controlling a power supply device to output power to a heating element, and includes the steps that target power is determined; middle power is set according to the target power, wherein the middle power is smaller than the target power; the power supply device is controlled to output power to the heating element, and power output by the power supply device directly reaches the middle power in the first stage; power output by the power supply device is adjusted so that the power reaches the target power in the second stage, wherein the continuous time of the first stage is shorter than the continuous time of the second stage; the power supply device is controlled to constantly output the target power to the heating element in the third stage. Accordingto the mode, the electronic-cigarette power control method in the mode can shorten power rise time, and the ignition speed of the electronic cigarette is increased.

The invention relates to fuel-burning equipment and provides a bio-particle fuel burner. According to the bio-particle fuel burner, the burner fast to ignite can reduce fuel loss, improve the utilization efficiency of fuel, save energy and protect environment, a machine table operates safely and stably, the burning power is large and the automatic level is high. The bio-particle fuel burner comprises a machine frame, a combustion chamber, a bin, a PLC, a temperature sensor and an air blower, wherein the combustion chamber, the bin, the PLC, the temperature sensor and the air blower are arranged on the machine frame. The bio-particle fuel burner further comprises an adjustable-air flow-distributing device and an ignition device. The bin is provided with a discharge device. The combustion chamber is provided with a feed pipe communicated with the discharge device of the bin. The air blower is communicated with an air inlet of the combustion chamber through the adjustable-air flow-distributing device. A flow-distributing output pipe air outlet of the adjustable-air flow-distributing device is further communicated with a feed pipe discharge opening of the combustion chamber. The ignition device comprises an ignition transformer and an electric stove wire connected with the ignition transformer. The electric stove wire is arranged in the combustion chamber. The PLC is connected with the discharge device, the ignition transformer, the temperature sensor and the adjustable-air flow-distributing device respectively.

The invention relates to a preparing method of a three-way catalyst. The method includes preparing a front-zone precious metal solution and a rear-zone precious metal solution, coating a carrier with a first slurry layer with the coating amount being 100-140 g/L, drying, calcinating, dipping the front end of the carrier in 50-300 g of the precious metal solution, dipping the rear end of the carrier in 100-500 g of the precious metal solution, drying in a drying oven having a temperature of 100-150 DEG C for 4-8 h, calcinating at 400-600 DEG C for 1-3 h, coating the carrier with a second slurry layer with the coating amount being 60-100 g/L, drying, and calcinating to obtain the catalyst. The method is simple and easily controllable in steps. Both ends of the carrier are respectively dipped in the precious metal solutions by a dipping manner. Active components are controllable in distribution and mostly distributed on the surface of a pore channel structure. The catalyst is high in catalytic conversion capability and still shows excellent three-way catalytic activity after high-temperature ageing. Compared with traditional three-way catalysts, the catalyst is rapid in ignition, high in precious metal utilization rate and low in cost.

The invention discloses a wire and cable horizontal combustion test device and a test method thereof. The wire and cable horizontal combustion test device comprises a combustion furnace, an exhaust transition section is arranged at the other end of the combustion furnace, an exhaust pipeline is arranged on one side of the exhaust transition section, a smoke density measuring mechanism is arranged on the exhaust pipeline, a waste gas pipe is arranged on one side of the exhaust pipeline, a smoke exhaust fan is arranged on one side of the waste gas pipe, and a waste gas treatment mechanism is arranged on one side of the smoke exhaust fan. PLC programming, a human-computer interface and computer control are adopted, test data can be checked in real time in the control test process, automatic data acquisition and processing, data storage and determination result output can be achieved, the whole test process is controlled through a computer, the test time, the test frequency, the delayed combustion time and the like can be set and recorded in the computer, automatic detection control is achieved, and detection work is automatically completed.

A pulse vector high pressure burner is composed of an air compression part, an oil and gas mixing chamber part, a combustion chamber part and a flame jet pipe communicated with each other in turn. The cavity of the combustion chamber is connected with a fuel sucker, a spark plug; the tube wall of the flame jet pipe is densely covered with a flame jet; the air compression part, the oil and gas mixing chamber part, the combustion chamber part are provided with a device composed of a check valve using the gas and oil pressure change to generate the pulse to supply air, wherein the device has 3-4 groups of check valves, except a group of check valves toward the flame jet pipe direction at the pressure entrance just in not out, the directions of the others just out not in; the invention can realize the fast pressurizing heating, large spray pressure, high temperature, good stability, which is suitable for the boimass compression moulding process and the required pressure heating or pressure combustion-supporting process.

Turbomachine, comprising a combustion chamber provided with systems (132, 132′) for injecting fuel into the chamber, and with at least one spark plug (144), the injection system (132) located as close as possible to the spark plug being configured in order to produce a pool (166) of fuel having an angle of opening (β) of a greater value than that (α) of the pools (166′) produced by the other injection systems (132′), and having a flow of fuel greater than that of the other injection systems (132′).

The invention relates to an exothermic heat-preservation feeder for casting and a preparation method of the feeder, belongs to the casting field, and solves the problems that an existing feeder has a poor heat insulating effect and insufficient heat, so as to shorten the solidification time of molten metal in the feeder, reduce casting defects such as casting shrinkage cavities and shrinkage porosity and promote the product yield. The feeder is prepared from expanded vermiculite, magnesite powder, quartz sand, aluminite powder, graphite powder, magnesium powder, ferric oxide powder, sodium nitrate, fluorite powder, sodium silicate, red mud and lignin. The preparation method comprises the following steps of weighing; placing the expanded vermiculite, the magnesite powder, 40% of sodium nitrate, 40% of red mud and 40% of lignin into a runner wheel sand mixer and mixing, then adding the quartz sand, the aluminite powder, the graphite powder, the magnesium powder, the ferric oxide powder, sodium nitrate and fluorite powder, mixing, adding the remained red mud, the lignin and the sodium silicate and mixing; and filling into a mold and compacting, dehydrating and demoulding after hardening. The feeder is used for casting.

An improved fire grate may provide fresh oxygen rich air to a secondary combustion zone, created by the improved fire grate, of a combustion chamber where a combustion gas stream is typically oxygen starved assisting in the burning process of incompletely burned particulates and reducing other harmful emissions. A baffle plate may be introduced in the secondary combustion zone to increase a combustion chamber temperature, encourage mixing of oxygen starved air with oxygen rich air and increase a residence time of the combustion gas within the combustion chamber. These aspects of the baffle plate promote more efficient burning of the biomass/fuel. Additionally, log lighter(s) may be disposed in the secondary combustion zone to increase a temperature of the combustion chamber for the purposes of reducing harmful emissions. The improved fire grate may be horizontally and vertically adjusted to fit within different sized fireplace combustion chambers.