Abstract: An all-purpose gas stove structure capable of increasing its air intake includes an all-purpose opening-covering case, an extended supporting frame, and at least one gas nozzle. The all-purpose opening-covering case includes an opening-covering case body for covering the heat source-receiving opening of a roasting/grilling device completely, and a gas controller with a gas operation unit for controlling the state of communication between gas input and output ends. The extended supporting frame is a box with a protective lid, is coupled to the inner side of the opening-covering case body at one end, and has a stove burner opening at the opposite end. The lateral walls of the protective lid are formed with vent holes. The gas nozzle is provided on the inner side of the stove burner opening. The all-purpose gas stove structure allows a ceramic roasting/grilling device to have a higher air intake and therefore produce higher heat.

Abstract: The present invention relates to a cutting torch system having an ignition mode and a cooling and cleaning mode. The cutting torch system comprises a cutting torch (1) having a cutting oxygen channel (4), a heating oxygen channel (5), and a fuel gas channel (6) The heating oxygen channel (5) and the fuel gas channel (6) are connected to an ignition mixer (7) and a fuel gas shut-off valve (8) is arranged upstream of the ignition mixer (7). The fuel gas shut-off valve (8) is configured to be open in the ignition mode and closed in the cleaning and cooling mode. The ignition mixer (7) is adapted for mixing heating oxygen and fuel gas into an ignition gas and communicating the ignition gas into the cutting oxygen channel (4) in the ignition mode, and for communicating heating oxygen into the cutting oxygen channel (4) in the cleaning and cooling mode.

Abstract: A heating device (100) for combustion of liquid fuels comprises at least one catalytic element (140) for catalytically burning a mixture of fuel and air, a fuel supply means (133) being disposed on an upstream side of said first catalytic element (140) and an air supply means (132) being disposed on an upstream side of said at least one catalytic element (140). A fuel-evaporating device (130) has a substantially axisymmetric shape and an upstream end and a downstream end. The fuel-evaporating device is heated, during operation, by the at least one catalytic element (140), and is supplied with fuel and air from the fuel supply means (133) and the air supply means (132). The heating device also comprises an outer housing (110), for containing said catalytic element (140) and said fuel-evaporating device (130). The fuel-evaporating device (130) is provided with at least one inner inlet pipe (132; 132b) in the generally upstream end thereof.

Abstract: A burner insert for use with a burner is provided. The burner insert includes a cylindrical body member having an inlet end and an outlet end. The cylindrical body includes a central passage and a plurality of openings disposed about the central passage. One or more fins are axially disposed within the central passage. A plurality of rib members are coupled to the body, each of the plurality of rib members axially disposed within one of the plurality of openings.

Abstract: A gas igniter includes a heating element, a bushing and a mounting bracket. The bushing is formed of a generally rigid electrically insulating material and supports the heating element. The bushing includes an elongated slot extending through the bushing. The mounting bracket includes a first connecting portion and a second mounting portion. The first connecting portion is inserted through the elongated slot located on the bushing for connecting the mounting bracket to the bushing. The second mounting portion is configured to attach the gas igniter to an associated support surface.

Abstract: A home cooking appliance having an electrode chamber for a burner assembly is provided. The home cooking appliance includes a burner rail, maintop surface, burner assembly including a burner electrode, igniter box below the burner rail and maintop surface, and an electrode chamber on the burner rail. The electrode chamber includes a body having a cavity and a first opening at a first end of the body, wherein a portion of the burner electrode is disposed in the cavity, an electrical contact surface in the cavity that engages and electrically connects the electrical contact surface to the portion of the burner electrode, and an electrical connector at a second end of the body, the electrical connector being electrically connected to the electrical contact surface and to the igniter box, thereby electrically connecting the igniter box to the portion of the burner electrode.

Abstract: A gas burner assembly is provided that has a hot surface igniter. The hot surface igniter is equipped with a shield that protects the igniter from e.g., impact or other damage during cleaning or use. The shield is configured with the gas burner in a manner that can minimize the aesthetic impact on the flame while also providing ignition at low and high gas flow rates.

Abstract: A new approach for igniting an air-fuel mixture in a turbine or other engine is disclosed. Resonance-enhanced multiphoton ionization (REMPI) is used to generate volume ionization within an air-fuel flow and induce an ignition arc. The output of a relatively low energy single pulsed ultraviolet laser is aimed across an electric field inside a volume of air to create a pre-ionized channel so that a smaller voltage electric field is sufficient to create an electrical arc that follows the pre-ionized channel and will ignite an air-fuel mixture. Because the arc follows the pre-ionized channel, it can be directed to an optimal location inside an ignition volume for igniting the air-fuel mixture. A specific example embodiment is described using a 287.5 nm wavelength pulsed ultraviolet laser to excite ground state oxygen molecules to a specific excited state having a coincident term energy with a specific nitrogen molecule excited state.

Abstract: The invention relates to a pulverized coal burner for a steam generator. The pulverized coal burner has a fuel duct, through which pulverized coal is conveyed with the aid of a carrier gas. The pulverized coal emerges together with the carrier gas at a fuel duct outlet. The pulverized coal burner furthermore has at least one core duct and at least one secondary duct. Air or oxygen flows through the core duct and the secondary duct, emerging at the core duct outlet and at the secondary duct outlet. The core duct outlet, the secondary duct outlet and the fuel duct outlet together form a burner outlet. The pulverized coal burner has at least one plasma ignition torch embodied integrally with the pulverized coal burner. The outlet of the at least one plasma ignition torch is arranged in the plane of the burner outlet or offset downstream in relation to the direction of flow of the pulverized coal. The plasma flame produced by the plasma ignition torch is thus located outside the fuel duct.

Abstract: An electronic gas lighting device including: a cup-shaped casing, formed by an electrically insulating material; a plurality of high-voltage outputs carried by the casing and each including a chimney-like housing carried by the casing and also formed by an electrically insulating material and a first electric contact carried by the chimney-like housing and arranged therein; and a frame element integrally and protrudingly carrying, on a first face thereof intended in use to face towards the casing, a plurality of second contacts, in number equal to the high-voltage outputs present on the casing and adapted to couple with the first contacts within said chimney-like housings, and provided on a second face thereof, opposite to the first, with a plurality of electric wires each connecting a second contact with a spark generating electrode fastenable to a cooking range; snapping fastening means to the casing being peripherally arranged on the outside of the frame element, along at least one side of the same.

Abstract: Disclosed is a combustion device and method for combusting granular, solid fuel, for example wood pellets. The combustion device includes a chamber having an outer wall and an inner wall, which inner wall divides the chamber into a combustion air space and a combustion chamber. Further, the combustion device includes at least one blast apparatus for providing primary combustion air and secondary combustion air and a rotating unit for rotating the combustion chamber. The inner surface of the combustion chamber includes a number of steps for lifting combustion fuel in the combustion chamber, when the combustion chamber is rotated. Further, primary combustion air is provided into the combustion chamber for contributing combustion of combustion fuel and for moving combustion fuel on the steps. In addition, secondary combustion air is provided into the combustion chamber for removing completely combusted fuel and/or combustion gases from the combustion chamber.

Abstract: A burner includes a housing 1, an intake pipe 3 and a burner head 4. Gas in the housing 1 is supplied to the burner head 4 through the intake pipe 3. An electric wire 8 extends through the intake pipe 3 which connects a piezoelectric element 7 to a core wire 10 from which electric discharge is generated near burner ports 9 of the burner head 4 by the piezoelectric element 7. Since the wire 8 is not exposed to outside the intake pipe 3, the wire 8 is never caught and damaged by an external object. Since air-gas mixture which is kept at around the room temperature is flowing through the intake pipe 3, the wire 8 is less likely to overheat during use of the burner. Thus, it is not necessary to provide the wire 8 with a shield plate for protecting the wire 8.

Abstract: In a spark plug ignition assembly for a spark plug, an ignition coil assembly has a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding. A spark plug connecting member is provided for connecting the coil assembly to the spark plug. At least one of the first and second core portions has a slot therein with a magnet located in the slot.

Abstract: A sacrificial electrode and sacrificial electrode feeder are configured to apply electricity to a combustion reaction. The electricity can be applied as a voltage, charge, and/or electric field. The sacrificial electrode may be consumed by the combustion reaction. The sacrificial electrode can optionally include a reactant or catalyst selected to interact with the combustion reaction.

Abstract: The invention pertains to ignition systems and more particularly to spark igniters for burners and burner pilots. A spark igniter is provide, which is configured so that the spark gap is on the outer side surface of the spark igniter.

Abstract: An ignition device for a combustible material can include an infrared radiation source in a housing structured to direct the infrared radiation to the combustible material.

Abstract: A combustor including a housing, an injector body, insulation, an air/fuel premix injector, a hot surface igniter, a fuel injector and a burner. The housing forms a main combustion chamber. The injector body is coupled within the housing, the injector body includes an initial combustion chamber. The insulation lines the initial combustion chamber. The air/fuel premix injector assembly is configured and arranged to dispense a flow of air/fuel mixture into the initial combustion chamber. The hot surface igniter is configured and arranged to heat up and ignite the air/fuel mixture in the initial combustion chamber. The fuel injector dispenses a flow of fuel and the burner dispenses a flow of air. The flow of fuel from the fuel injector and the flow of air from the burner are ignited in the main combustion chamber by the ignition of the air/fuel mixture in the initial combustion chamber.

Abstract: A system includes a gasifier. The gasifier includes a refractory disposed about a gasification chamber and an enclosure disposed about the refractory. The system also includes an ignition device configured to extend into the gasification chamber and to initiate a gasification reaction within the gasification chamber with a refractory temperature of less than approximately 982° C.

Abstract: A multiflame burner with burner nozzles which can be loaded with fuel gas, particularly for thermal material processing methods, in which at least one of the burner nozzles is provided with at least one auxiliary nozzle opening for generating an auxiliary flame arranged laterally to a main nozzle arrangement for generating a working flame and in the direction of at least one adjacent burner nozzle.

Abstract: Disclosed is a device and a method for maintaining and operating a flame. The device has a burner, a burner attachment having an outlet geometry, wherein on a side of the burner attachment facing away from the burner, an anode is provided on one side of the outlet geometry of the burner attachment. A dielectric is provided on the other side of the outlet geometry, wherein a cathode is located in the dielectric. The device and method: do not require continuous flame monitoring; positively influence the deposition behavior of layer-forming components of the fuel gas flame; and reduce the thermal impact of the burner and the operating costs thereof.

Abstract: A pilot burner assembly for easy removal of a thermo-electric or other device is disclosed. In an illustrative embodiment, a burner tube, thermo-electric device, and/or spark source are retained in a desired position via a bracket and resilient clip. The bracket may include retention features built into the bracket to help aid in the positioning of the burner tube, thermo-electric device, and/or spark source. The burner tube, thermo-electric device and/or spark source may include retention features that are configured to engage corresponding retention features in the bracket, when desired. The resilient clip may bias the retention features of the burner tube, thermo-electric device and/or spark source against corresponding the retention features of the bracket.

Abstract: The present invention is a method of delivering vaporized alcohol fuel through a thermally conductive porous nozzle to a catalytic burner with a plasma cavity and a surrounding porous catalytic cavity with fuel vapor and air supplied separately and inter diffusing into each other from different routes to the catalyst to achieve an efficient, steady, and complete combustion of the hydrogen bearing fuels. This heating system with passive auto thermostatic behavior, coupled to thermopiles, heat pipes and fluid heating systems may provide useful heat and electricity to applications of floors, roadways, runways, electronics, refrigerators, machinery, automobiles, structures, and fuel cells.

Abstract: In accordance with the present invention, there is provided . . . a flashlight firestarter that includes an illumination source, an electrically heated ignition source for igniting combustible materials, and a firestarting element protective cap that includes a magnetic insert, all housed in a hollow multi-section cylindrical body. The firestarting element protective cap can be magnetically attached to the base of the invention for storage during operation of the firestarting element. Battery supplied electrons are directed through a component cylinder that works in conjunction with other elements of the invention to form a high current, cylindrical, multi-contact, low friction, auto-isolation switching mechanism. The flashlight firestarter also includes safety and reference channels that are used as both visual and tactile references during operation and are also used to house an onboard safety clip that prevents operation of the flashlight firestarter during storage or transport.

Abstract: A method for determining an optimum positioning zone of an ignition plug fitted with a semiconductor element in a combustion chamber, where the method includes: a step of determination (E1), using a test ignition plug, of an optimum fuel flow rate value intended to ensure optimum long-term operation of the ignition plug, a succession of measurements (E2) of quantities of fuel collected at the surface of one end of a test tool (T) positioned in the combustion chamber, in successive test ignition tests, a step of determining (E3) the fuel flow rate values corresponding to the measured quantities of fuel, a step of comparison (E4) of the fuel flow rate values and of the optimum fuel flow rate value, and a step of determination (E5) of the optimum positioning zone following the comparison.

Abstract: A gas burner assembly for connection to a source of gas is provided. The gas burner assembly includes a burner body defining an opening therethrough and a generally circular outer periphery. The outer periphery includes a recess therein. The gas burner additionally includes a bracketing unit secured to the burner body and including a igniter holder and at least one igniter being concentric about a vertical axis and positioned within at least one of the recess and the igniter holder. The igniter includes an ignition element that is adjustably positioned to provide an optimal radial distance from the burner body, and wherein the gas burner assembly is configured to operatively accommodate a variety of igniter styles.

Abstract: An ignition assembly for use in pilots for flaring, incineration, and process burner applications, includes a hot surface igniter assembly specifically located in the pilot head or combustion chamber of a flame front ignition system for providing a pilot ignition source. The pilot head is positioned proximally to the exhaust exit of a flare gas stack. The hot surface ignition assembly is positioned proximally to the pilot head. The hot surface ignition assembly passes electric current through a ceramic-insulated element in order to produce heat by induction sufficient to ignite said pilot gas. A thermocouple, or other form of flame sensor, is provided for detecting and a sensing the existence of pilot flame and for controlling the ignition sequence.

Abstract: The present invention relates to a bidirectional jet flame igniter for aerosol fire suppression apparatus, comprising igniter bracket (5) and igniter cup (6), wherein the igniter cup (6) is fixed in relation to the igniter bracket (5), and has ignition chemical agent (3) and ignition head (4) therein; the ignition head (4) is fixed at the center of the ignition chemical agent (3), and is connected with ignition head lead wire (1). Compared to that in the prior art, the flame igniter in the present invention has satisfactory air-tightness and moisture-proof performance, and can effectively protect the ignition chemical agent therein against vibrations; in addition, the flame igniter achieves synchronous bidirectional ignition.

Abstract: A combustor for oxidizing a combustion fuel and pre-heating one or more reactants for fuel reforming. The combustor includes an elongated housing having an inlet for receiving a combustion fuel and an outlet for exhausting combustion products. The elongated housing further includes a cylindrical side wall, a bottom wall, and a top wall. Inert particles are disposed within the housing adjacent the inlet. A combustion catalyst bed is disposed within the housing above the inert particles that is a mixture of inert particles and combustion catalyst. The inert particles and the combustion catalyst preferably have a volumetric ratio of inert particles to catalyst between about 2:1 and about 4:1. The combustor has at least one heat exchanger within the combustion catalyst bed for heating a reformer reactant and generating steam. Preferably, the combustor includes at least two heat exchangers within the combustion catalyst bed, the heat exchanging elements have different surface areas.

Abstract: An engine includes: (1) a housing defining a combustion chamber; (2) a set of injection mechanisms connected to the housing and configured to introduce a fuel and nanoparticles into the combustion chamber; and (3) an optical ignition system connected to the housing and configured to irradiate the nanoparticles to ignite the fuel.

Abstract: A waste oil furnace for burning waste oil may include a fire container to burn the waste oil, an ignition burner to ignite the oil and an afterburner being connected to the flame container to burn the waste oil. The afterburner may include a venturi, and the afterburner may include a induction air port. The ignition burner includes an oil nozzle and the ignition burner may include nickel cadmium (CAD) cell. The ignition burner may include an ignition electrode, and the ignition burner may include a fuel ignition nozzle.

Abstract: The present invention relates to a burner using plasma, which uses a mixture fuel in which water and industrial waste oil are mixed at an appropriate ratio. A combustion tank has a positive electrode (+), a rod installed at one side of the combustion tank has a negative electrode (?), and direct current electricity is supplied to the combustion tank and to the rod from a direct current electricity supply unit. A steam supply pipe of a steam generator is installed together with a plasma torch unit which is coupled to the combustion tank, such that high-temperature steam is discharged from the steam supply pipe together with the plasma torch generated by the plasma torch unit. Thus, the high-temperature plasma torch generates a high-temperature plasma flame of 800° C. or higher to heat a combustion chamber at the inner wall of the combustion tank.

Abstract: The detonation propagation in a channel geometry which suppresses detonation propagation in one direction, allows it in another direction, and does not create flow restrictions in the channel. The geometry consists of a series of divergent sections separated by wedges that form a sawtooth shape. The detonation fails to propagate through this geometry in one direction because the detonation front is weakened by diffraction, and reignition centers are isolated from the main channel. In an opposite direction, convergent parts of the geometry support the detonation propagation, because subsequent shock collisions with oblique walls that form convergent sections create powerful transverse waves. These powerful transverse waves help the detonation propagation or reignite it.

Abstract: The invention describes a burner for a thermal post-combustion device, which has a burner jet arranged in a housing. Arranged on the end region of the housing is a swirl apparatus, through which the exhaust gas to be purified can be made to flow. The burner jet comprises an outer tube and an inner tube, wherein it is possible for combustion gas to be made to flow through the interspace between said two tubes as far as an annular outlet gap in the end region thereof. The flow path for the combustion gas has a bottleneck in the vicinity of the outlet gap. In this way, a compact flame can be achieved, the form of which can be designated “bell-shaped” and which, for a given volume, has a relatively small surface. Although, such a flame has poor CO2 values, the swirl apparatus ensures that the exhaust gas burns in the flame with very low NOx and CO values.

Abstract: An ignition system includes an electrical energy delivery device having a first electrode terminating at a first end portion and a second electrode positioned in the ignition system separately from the electrical energy delivery device. The second electrode terminates at a second end portion disposed a first distance from the first end portion to form an air gap therebetween. The air gap forms an area including the shortest distance between the first electrode and the second electrode.

Abstract: A catalytic combustor (1) is provided for combustion of gaseous and liquid fuels, which combustor comprises a housing (2) having an inlet (3) and an outlet (4) through which an airflow is directed, and a fuel injector (10) for injecting fuel in the airflow. The combustor also comprises at least one catalytic element (12, 14, 15) for combusting the mixture of air and fuel. A fuel-evaporating device (7) is arranged for evaporating a liquid fuel, which device is heated by the catalytic element (12), either through combustion therein or by means of an electrical heating element (13) arranged adjacent thereto.

Abstract: A high efficiency laminar flow burner system for proving a stream of heat energy including a supply input module for providing fuel and laminar streams of air to a combustion manifold. The combustion manifold includes an air-fuel mixing system, a stoichiometric unit, and a refractory unit each coupled to one another. A first combustion stream is established at the air-fuel mixing chamber system as fuel exits an injector device at direction perpendicular to the laminar air intake stream. A laminar air intake stream traveling from the supply input module and along the staging passageway passes through a stoichiometric unit body at a plurality of air intakes to meet with the first combustion stream within to define a second combustion stream for introduction from the stoichiometric unit to the refractory unit. The refractory unit thus defines a third combustion stream as the second combustion stream travels across a refractory passageway.

Abstract: A fuel injector for injecting fuel into a turbomachine combustion chamber, the injector presenting an injector nose for connection to an injection system fastened to the end wall of said combustion chamber, the injector nose comprising: a first channel for passing a flow of an air/fuel pre-mixture towards the combustion chamber, the first channel opening out into the center of the injector nose via an outlet opening for the air/fuel pre-mixture; an electrical insulator surrounding said outlet opening for the air/fuel pre-mixture; a plasma generator system disposed inside said electrical insulation and downstream from said outlet opening for the air/fuel pre-mixture in order to control ignition and combustion of the air/fuel pre-mixture; a second channel for passing a flow of fuel towards the combustion chamber, the second channel opening out outside said electrical insulation; and a third channel for passing a flow of fuel towards the combustion chamber, this third channel opening out outside the second ch

Abstract: A gas turbine burner with an igniter and an ignition electrode for installation in a main burner of a gas turbine is disclosed. The ignition electrode is protected from damage by a protective element.

Abstract: In certain embodiments, an apparatus includes an oxygen depletion sensor (ODS) includes a thermocouple, a first nozzle configured to direct heat from combustion of a first gas, liquid, or combination thereof to the thermocouple, a second nozzle configured to direct heat from combustion of a second gas, liquid, or combination thereof to the thermocouple, and a first igniter.

Abstract: A pilot burner assembly for easy removal of a thermo-electric or other device is disclosed. In an illustrative embodiment, a burner tube, thermo-electric device, and/or spark source are retained in a desired position via a bracket and resilient clip. The bracket may include retention features built into the bracket to help aid in the positioning of the burner tube, thermo-electric device, and/or spark source. The burner tube, thermo-electric device and/or spark source may include retention features that are configured to engage corresponding retention features in the bracket, when desired. The resilient clip may bias the retention features of the burner tube, thermo-electric device and/or spark source against corresponding the retention features of the bracket.

Abstract: A torch assembly comprises a rigid elongated burner tube having a distal end with a bend terminating in a fuel discharge nozzle tip directed backwardly toward the elongated burner tube in a J-shape configuration forming an acute angle relative to the longitudinal axis of the elongated burner tube. The nozzle tip is configured to be positioned in hard to reach places for treatment of a part by the ignited fuel. The elongated burner tube rotates 360 degrees about its longitudinal axis. An ignition device may be mounted on the elongated burner tube for igniting the fuel. Alternately, the elongated burner tube may be comprised of a flexible stay put metallic tubing which can be formed into various configurations and which remains in this configuration until it is formed into a different configuration.

Abstract: A high-efficiency hot-water boiler for a heating system of a building is provided. The boiler includes a boiler enclosure that contains a furnace area compartment within an insulated sealed casing, a first watertube compartment within a sealed casing, a second watertube compartment within a sealed casing, and an air-to-air preheat exchanger within a sealed casing. A plurality of separate, closely-spaced watertubes extends within each of the compartments and provides paths for working fluid to flow through the compartments for purposes of transferring heat to the working fluid. A burner is located within the furnace area compartment for combusting an air/gas mixture.

Abstract: A gas igniter includes a heating element, a bushing and a mounting bracket. The bushing is formed of a generally rigid electrically insulating material and supports the heating element. The bushing includes an elongated slot extending through the bushing. The mounting bracket includes a first connecting portion and a second mounting portion. The first connecting portion is inserted through the elongated slot located on the bushing for connecting the mounting bracket to the bushing. The second mounting portion is configured to attach the gas igniter to an associated support surface.

Abstract: A burner having two ignition electrodes and a bracket is provided. The bracket is arranged on the outer surface of the burner and the ignition electrodes are held, at in each case three points of their periphery, in a fixed position using the bracket. A gas turbine with the burner is also provided.

Abstract: A battery powered cigarette lighter having a switch which is activated by a change in air pressure or air flow is described. The change in air pressure or air flow, which is caused by the consumer forcing air through the air permeable cigarette, causes the switch to close thereby allowing the lighter's direct current power supply to increase the temperature of the lighter's heating element above the cigarette's ignition point.

Abstract: A gas burner for a cooking appliance includes at least one combustion chamber with a first gas inlet forming a substantially annular outer flame ring and a substantially annular inner flame ring. At least one flame channel is configured to trigger ignition of at least one of the inner flame ring and outer flame ring. In one example, at least one transfer burner port is in gas-flow communication with the combustible gas in the at least one combustion chamber.

Abstract: An igniter for an internal combustion engine is disclosed. The igniter may have a body, and a pre-combustion chamber integral with the body and having at least one orifice. The igniter may further have a focusing device configured to direct at least one beam of light energy into the pre-combustion chamber.

Abstract: The present invention relates to an alcohol stove comprising a casing (10), whereby the housing comprises one or several fire hearths (17) and encases a fuel container (22) and a burner arrangement (20), wherein a heating wire (101) is arranged above the opening (25) of the fuel container (22) and that the heating wire (101) is connected to a connectable electrical power source, which when connected causes the heating wire (101) to heat up so that the heating wire (101) by heat radiation evaporates the fuel in the fuel container (22) such that the alcohol stove is ignited by the fuel fume vapours being ignited as they pass the heating wire (101).

Abstract: The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOx storage catalysts.

Abstract: A dual chamber burner assembly is provided for use with a heater apparatus having dual combustion air premix blowers. The burner assembly includes first and second interior zones communicated with first and second foraminous outer wall portions. First and second fuel and air inlet passages are communicated with the first and second interior zones, respectively.