831results about How to "Efficient combustion" patented technology

A method and system for recovery of hydrocarbons from a hydrocarbon-bearing formation. A gaseous component of the produced hydrocarbon-containing fluid is separated from the fluid. The gaseous component is combusted with air in a power plant. Mixing and compressing of the gaseous component and air are realized to produce a flammable and pressurized gas-air mixture prior to combustion. An exhaust gas resulting from combustion is injected into the formation.

An environmentally beneficial method of producing methanol from varied sources of carbon dioxide including flue gases of fossil fuel burning power plants, industrial exhaust gases or the atmosphere itself. Converting carbon dioxide by an electrochemical reduction of carbon dioxide in a divided electrochemical cell that includes an anode in one compartment and a metal cathode electrode in a compartment that also contains an aqueous solution comprising methanol and an electrolyte. An anion-conducting membrane can be provided between the anode and cathode to produce at the cathode therein a reaction mixture containing carbon monoxide and hydrogen, which can be subsequently used to produce methanol while also producing oxygen in the cell at the anode. The oxygen produced at the anode can be recycled for efficient combustion of fossil fuels in power plants to exclusively produce CO2 exhausts for capture and recycling as the source of CO2 for the cell.

A system and method are disclosed comprising coupling a compression ignition engine (17) to an AC electrical generator (18) and / or a DC hompolar generator (19), wherein the homopolar generator (19) produces an electric current which is used to electrolyse water into hydrogen and oxygen. The hydrogen from the water electrolysis process may be used as a renewable fuel, either in the form of a gaseous fuel or a reactant in a fuel cell. The oxygen from the water electrolysis unit (23) may be used to produce an oxygen enriched combustion atmosphere in the engine (17). The oxygen may optionally be used as a reactant, along with the hydrogen, in a fuel cell.

A cooking oven includes a heatable oven chamber (6) that can be loaded with product from the outside area (A) through a loading port (8). An oven door (10) serves to close off the loading port (8) of the oven chamber (6) from the outside area (A). An inner pane (50) faces the oven chamber (6), an outer pane (48) faces the outside area (A), and one or several intermediate panes (52) are positioned between the inner pane (50) and the outer pane (48). An outer cavity (54) is between the outer pane (48) and the neighboring intermediate pane (52) and an inner cavity space (56) is between the inner pane (50) and the neighboring intermediate pane (52). A cooling system moves cooling air (K1) through the outer cavity (54) while thermally insulating air (I) can be held stationary in the inner cavity (56).

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. Alternatively, the piston assemblies may drive a linear alternator. The exhaust ports for each engine cylinder are sized and located to retain the desired amount of internal EGR in each cylinder without the need for exhaust valves. As an alternative, an external EGR system may supplement the internal EGR in order to obtain the desired EGR at the desired temperature.

The invention relates a two-stroke internal combustion engine (10) comprising at least one cylinder (20) with a piston (24) arranged reciprocateably between its top dead center and bottom dead center, and a cylinder cover (26) defining a combustion chamber (22), oxygen containing gas inlet (18) in the lower part of the cylinder (20) to be open into the combustion chamber (22) at least while the piston is at its bottom dead center position, a gaseous fuel inlet (30) arranged in the cylinder between the oxygen containing gas inlet (18) and the cylinder cover(26), and an exhaust valve (28) arranged to the cylinder cover at a center axis of the cylinder. The cylinder cover(26) is provided with pilot ignition pre-chambers (36) opening into the combustion chamber (22) through pre-chamber ports (34).The preset invention relates also to method of operating the two-stroke engine (10).

The present invention is a system for increasing the fuel efficiency of a vehicle of the type having an internal combustion engine, a battery, a vacuum line, and a fuel line that feeds fuel to the engine. The system comprises a hydrogen gas generator and a vacuum regulator. A vacuum regulator is in fluid communication with the vacuum line of the vehicle and an output line of the gas generator. The vacuum regulator includes a vacuum pressure adjustment means for controlling the amount of hydrogen gas that is introduced into the vacuum line of the vehicle. In use, hydrogen gas is introduced into the vehicle vacuum line and then into the engine where it is mixed with the fuel from the fuel line and ambient air. The hydrogen gas increases the atomization of the fuel for more efficient burning thereof in the engine. A fuel additive including an acetone-based compound, a xylene-based compound, and an upper cylinder lubricant may be mixed with the hydrogen gas to further atomize the fuel. An oxygen sensor signal generator that generates a bypass signal replicates the output of a vehicle oxygen sensor under normal operating conductions to keep the air mixture of the engine unaffected. The system may additional include at least one fuel heating means fixed to a high-temperature portion of the engine, such that the fuel is heated before being introduced into the engine so as to further increase atomization of the fuel for more efficient burning thereof in the engine.

A premixer for a combustor system has a venturi-type mixing tube with a flow axis, an inlet adjacent one axial mixing tube end, and a nozzle assembly at the opposite axial mixing tube end. The mixing tube inlet is flow connected to a source of compressed air and a source of fuel, and the mixing tube is connected to combustion chamber, an annular or can-type liner and an inlet, and the nozzle assembly extends into the combustion chamber and has at least one port for distributing the fuel / air mixture within a single stage combustion zone. In a preferred configuration, a pair of premixers are located at diametrically opposed positions on an annular combustion chamber, and the venturi axes are both radially disposed and axially inclined with respect to the combustion chamber axis. A single, centrally located, cylindrical air valve controls compressed air flow to both premixers through a manifold and distribution conduits.

A hybrid fuel injection and carburetor assembly for delivering a fuel and air mixture into an intake manifold of an engine is provided. The assembly includes a housing and a plurality of inserts with Venturi-shaped bores to establish low pressure regions in the flow of air. The housing and inserts cooperate with one another to present cavities, and the inserts include apertures extending between the cavities and the low-pressure regions. The assembly also includes fuel injectors in fluid communication with the cavities. In operation, fuel is injected at a high pressure into the cavities to the point, and the pressurized fuel is delivered into the low pressure air via the apertures. Because of the large pressure difference between the pressurized fuel in the cavities and the low pressure air, the fuel becomes very atomized.

A cooking oven includes a heatable oven chamber that can be loaded with product from the outside area through a loading port. An oven door serves to close off the loading port of the oven chamber from the outside area. An inner pane faces the oven chamber, an outer pane faces the outside area, and one or several intermediate panes are positioned between the inner pane and the outer pane. An outer cavity is between the outer pane and the neighboring intermediate pane and an inner cavity space is between the inner pane and the neighboring intermediate pane. A cooling system moves cooling air through the outer cavity while thermally insulating air can be held stationary in the inner cavity.

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. Also connected between the pistons are a position sensor and a calibration position sensor that are employed to determine the position and velocity of the inner piston assembly. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. Also engaging the outer piston assembly are a position sensor and a calibration position sensor that are employed to determine the position and velocity of the outer piston assembly. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine.

The present invention is provides a fuel injector having a hydraulically actuated injection pin, also referred to as an injector stem. In accordance with invention, the fuel injector provides for more efficient fuel combustion within internal combustion engines, such as vehicle engines. According to various embodiments of the invention, the fuel injector achieves efficient fuel combustion by (i) fast and responsive actuation, (ii) heating the fuel to a supercritical temperature, (iii) maintaining fuel at a supercritical pressure, and (iv) using a catalyst in the oxidization of the fuel. Some embodiments of the invention utilize a dual solenoid to actuate the fuel injector pin and a heating element to heat the fuel to a supercritical temperature.

The invention discloses a supercritical water oxidation reactor by using an auxiliary fuel for supplying heat, the heat required for a reaction can be supplied by using the auxiliary fuel, Material, fuel and an oxidizing agent (air or oxygen) are mixed with a high efficiency through the different directional jets for raising oxidation efficiency. According to the invention, the reactor employs a combination structure of evaporation wall and pot type backflow, the reaction vessel volume is effectively used and the reaction time is increased, the blockage problem generated by salt deposition can be also prevented, the corrosion problem of the reactor is effectively reduced. The temperature of the reactor bottom can be preciously controlled through a cooling water pipeline at the reactor bottom, thereby the safe operation of equipment is guaranteed. The reactor effectively solves the economic problem of a supercritical water reaction system by using the auxiliary fuel for supplying, the invention has the advantage of easy industrial amplification, and is widely applied to organic liquid such as high density and difficult biodegradation organic waste water / garbage leachate and the like for a harmlessness processing.

A low emission power generating apparatus which comprises a modified two-stroke diesel engine component and a modified turbocharger component which has a relatively low aspect ratio. The diesel engine component is a modification of a conventional two-stroke diesel engine design and includes an exhaust valve cam of unique design that has a cam profile which results in a later than-normal exhaust valve opening and an earlier-than-normal valve closing so that the time during which the exhaust valve remains open is shorter than normal, thereby causing a substantially greater volume of residual gases to remain in the combustion chamber following the scavenge stroke. This increase in the volume of the residual exhaust gases within the chamber leads to an increase in compression temperature and effectively increases the compression ratio and consequently the compression pressure. Because of the heat absorption capacity of these residual exhaust gases, the exhaust gases remaining in the chamber following the scavenge stroke tend to absorb combustion heat and thereby effectively reduce the peak combustion temperature. This reduction in peak combustion temperature advantageously results in the lower than normal formation of nitrogen oxide (NOx) and, therefore, allows advancement of the injection timing, while still maintaining the NOx emissions coming from the engine lower than those legislatively mandated. Advantageously, the advance in injection timing, which increases NOx emissions, by definition has the effect of also reducing particulate matter emissions. Thus, by increasing the volume of residual exhaust gases within the cylinder, substantial particulate matter emission reductions can be achieved, while at the same time maintaining NOx emissions well below mandated limits. The modified turbocharger component provides an additional charge of oxygen-rich air into the combustion chamber which effectively increases the compression pressure, which, in turn, leads to an earlier start of combustion because of the combustible mixture reaching its auto-ignition temperature at an earlier point in the cycle. This phenomenon leads to more thorough combustion of the fuel and also generally leads to higher exhaust temperatures. Higher exhaust temperatures, in turn, lead to a greater oxidation rate of the soluble organic fraction thus lowering the level of emission from the engine of undesirable particulate matter.

A U-tube diffusion flame burner assembly having improved flame stabilization with no undesirable acoustic effects. The burners are axial units comprised of flame holders and combustors. The flame holders includes secondary air tubes to support the flow of secondary air that have helical walls forming helical passageways along at least a portion of its inner diameter to impart a swirl to the secondary air. The helical passageways impart a swirl to the secondary air exiting the passageways while simultaneously acting as a heat exchanger to heat primary air. The flame holders includes fuel tubes having first ends connected to a fuel supply and second flame ends. A plurality of radially oriented apertures are located at the second flame ends to distribute fuel in a radial direction. Primary air tube surrounds at least the flame ends of the fuel tubes and extend axially from first air supply ends to second flame ends. Air is diverted from air supply ends of the flame burners into primary air tubes through radial apertures located at the first air supply ends of the primary air tubes. Secondary air tubes surround the primary air tubes extending from first air supply ends to second ends opposite the air supply, the secondary air tubes having inner diameters larger than the outer diameters of the primary air tubes. The secondary air tubes extend for a preselected distance beyond the second flame ends of the primary air tubes and are coupled to axially-oriented conical-shaped reducers. Flame at high velocity exits the restricted end of the reducers.

Disclosed is an oil burning system that is capable of burning oils of varying viscosities, including high viscosity waste oils and low viscosity heating oils. Suitable as a new installation or a retrofit modification, the present invention incorporates the use of a variable rate, high-pressure oil delivery system, along with an oil pre-heater, in conjunction with a modified high-pressure atomizing nozzle. Installed in a sliding drawer burner arrangement that allows for quick and easy access, the oil burning system also includes a means by which particulate matter and carbonization build-ups are removed from the burner nozzle automatically, thereby eliminating the need for frequent cleaning.

The invention relates to a waste processing method and a waste processing system which can avoid discharging harmful material as dioxins and effectively attain the slag of value metal. Wherein, the method for recycling value metal comprises: burning the waste, recycling the slag that containing value metal, and fully burning generated gas , and cooling said burning gas with the cooling speed that avoiding generating dioxins. With said method, the invention can gasify the resin component in the waste via burning waste, to obtain the slag of value metal in short time.

A portable range extender can be used to supply electrical power to an electric vehicle operable by an electric traction motor. The portable range extender includes an engine, a dynamoelectric machine coupled to the engine by a shaft, an autonomous range extender controller for controlling operations of the range extender independently of a controller for the vehicle, and circuitry associated with the engine and machine. To start operation, electrical energization is applied from the vehicle battery to the dynamoelectric machine for operation as a motor to drive the shaft. As the shaft accelerates, the rotational speed of the shaft and the temperature of the engine are sensed. When the speed and temperature obtain predetermined thresholds, fuel is supplied to the engine and ignition is activated. The engine then operates as a prime mover to drive the shaft in lieu of the machine. After a period of engine prime mover operation, the machine is activated for operation as a generator to provide an electrical current output for charging the battery or supplying energy to the traction motor. When range extender operation is to be stopped, fuel supply is cut off before ignition termination to avoid engine backfire.

A dual mode combustor of a gas turbine engine contains at least one dual mode combustor device having a combustion chamber, a fuel air mixing element, a high frequency solenoid valve and a fuel injector. During a first mode of operation the dual mode combustor device operates in a steady, constant pressure deflagration mode, receiving its fuel from the fuel injector. In a second mode of operation the dual mode combustor device operates in a pulse detonation mode, receiving its fuel from the high frequency solenoid valve.

A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turobocharged gasoline engine through a cylinder and into the exhaust system by a compressor. In this way, regeneration of a particulate filter may be accomplished without an auxiliary air supply.

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. Alternatively, the piston assemblies may drive a linear alternator. Piston guide posts are fixed and guide the outer pistons as they reciprocate within the engine cylinders.

A method of combusting sulfur-containing fuel in a circulating fluidized bed boiler includes the steps of (a) feeding sulfur-containing fuel into a furnace of the circulating fluidized bed boiler, (b) combusting the fuel with oxidant gas consisting essentially of pure oxygen and circulated exhaust gas, so as to form exhaust gas having carbon dioxide and water as its main components, and (c) feeding calcium carbonate containing material into the furnace so as to capture sulfur dioxide into calcium sulfate in the furnace. The temperature in the furnace is maintained above 870° C.

A venting system for a direct vent fireplace or other direct vent appliance to direct combustion gases to an exterior area. The direct venting vent pipe facilitates unrestricted lengths of pipe installations. The vent pipe has a double wall construction forming an interior axial passageway and a coaxial outer passageway. The double walls are spaced apart by an insert to maintain coaxial spacing. Sections of the vent pipe are lockingly connected to prevent separation and ensure sealing connection between the pipe sections. Elastic seal members are utilized between the matingly connected sections and a mechanical lock assembly prevents separation.

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. Alternatively, the piston assemblies may drive a linear alternator. Piston guide posts are fixed and guide the outer pistons as they reciprocate within the engine cylinders.

The present invention provides a portable fire pit to be used in conjunction with particularly sized fuel blocks, whereby these fuel blocks are manually positioned in a square-shaped configuration around ventilation holds provided through the base of the fire pit. Alignment flanges on the base provide a positioning and alignment brace structure for the fuel blocks, which are fitted into an abutting relationship with the alignment flanges and one another on the base. The ventilation holes are formed to align with an inner chimney formed by the positioning of the fuel blocks. This chimney is formed over the ventilation holes to allow the fire to burn from the chimney outwardly through the blocks and thereby provide an efficient burning of the fuel.

A technique is provided for improved response of internal combustion engines to increased load demands. The engine is equipped with an air storage tank that stores compressed air. The air may be stored at an elevated pressure (e.g., manifold air pressure) during normal full load operation of the engine. Valving maintains the compressed air isolated during normal operation. During transitory periods of higher power output demand, the compressed air is directed to the engine, and output of a turbo-driven compressor can be vented to avoid surge. The technique allows for quicker reaction to load demands, and improved combustion during transitory periods, and reduced particulate and smoke emissions.

The invention discloses a method for designing a fixed-geometry two-dimensional mixed-compression type supersonic velocity air inlet channel. A basic structure of the adopted two-dimensional mixed-compression type air inlet channel comprises an outer pressing section, an inner pressing section, a throat section, an expanding section and a lip. The lip is of a sharp plate structure with a certain wedge angle. When the air inlet channel is designed, designed starting Mach number is improved appropriately, the lip shape is changed, and the starting mach number is effectively reduced to be lower than a requested value through a certain flow on the premise that the flow requirement of the air inlet channel is met. By means of the method, the requirement for starting performance can be met, contraction ratio of the air inlet channel can be increased in design, and accordingly high back pressure resisting capability and low outlet Mach number are obtained in a wide working range to facilitate efficiently combusted organizations in a combustion chamber. Furthermore, small total pressure loss in the working process of the air inlet channel can be achieved through the change of the lip shape. The method for designing the fixed-geometry two-dimensional mixed-compression type supersonic velocity air inlet channel has good actual application value.

A candle having a body of a meltable fuel and a planar wick. When lit, the candle provides a unique flame formation, usable in a variety of decorative applications. The wick can be configured to evenly deplete the meltable fuel, while allowing for candles having relatively large and unique body configurations. The body of candle and / or the wick may include scented oil to promote the release of fragrance upon heating. The wick preferably is formed of wood, thereby providing an acoustic contribution to ambiance and improved combustion that generates less soot than conventional cotton wick candles.