37results about How to "Increased flame speed" patented technology

A hydrogen G-cycle rotary vane internal combustion engine has a sodium vapor chamber transferring excess combustion heat into combustion chambers. An active water cooling system captures heat from the engine housing stator, rotor, and sliding vanes and transfers it back into the combustion cycle by premixing it with hydrogen to reduce peak combustion temperature and with an early an late stage combustion chamber injection to help transfer heat from the sodium vapor chamber, to control chamber temperature, and to increase chamber vapor pressure. A combustion chamber sealing system includes axial seals between the rotor and the stator, vane face seals, and toggling split vane seals between the outer perimeters of the sliding vanes and the stator. Sliding vanes reciprocate laterally in and out of the rotor assisted by a vane belting system. A thermal barrier coating minimizes heat transfer and thermal deformation. Solid lubricants provide high temperature lubrication and durability.

An electrical circuit for extending the duration of the spark provided by a spark plug. Instead of a single coil (and a single pair of windings), a dual coil unit is used. The dual coil unit may be operated in a “multi-strike” mode in which the discharge of each coil is shortened and offset from that of the other coil. This provides an effective spark for an extended duration.

A system for improving efficiency in which water or aqueous solution is broken into its core molecules of hydrogen and oxygen using a 12 volt power source, and of which this gas vapor can improve the efficiency of an engine of a vehicle in a catalytic fashion once combining with a fossil fuel, and includes a reactor housing containing at least one reactor unit having electrodes slotted in an insulated container, a solution supply system that regulates the aqueous solution in the system; and an air handling system that regulates the decomposed hydrogen and oxygen gas in the system. The reactor unit being immersed in an liquid or aqueous solution produces hydrogen and oxygen through electrolysis.

The present invention relates to a system capable of using kinetic/inertial and renewable energy to generate hydrogen for use as a fuel in vehicles and other applications. In certain embodiments, this invention relates to a system in which hydrogen is generated during vehicle braking and which is operable with an internal combustion engine, and which can be retrofitted to vehicles with such an engine as well as to stationary combustion devices. Methods for generating hydrogen to power vehicles and vehicles utilizing the inventive technology are also provided. The present invention also relates to stationary devices, such as space heaters and water heaters, capable of generating hydrogen for use as a fuel additive therewith, and methods of generating hydrogen using such devices.

A mixing region of a fuel nozzle assembly for a combustor in a gas turbine, the assembly including: a gaseous fuel nozzle having a center axis and extending along the center axis, the fuel nozzle including a gaseous fuel passage and a fuel nozzle at a distal end of the passage; an air tube concentric with the fuel nozzle and defining an air passage between the air tube and the fuel nozzle, wherein the air tube includes a distal section extending axially beyond the fuel injection nozzle; a first fuel-air mixing zone defined by and inside the distal section of the air tube, wherein said first fuel-air mixing zone is downstream of the fuel injection nozzle; a flame holder comprising a porous structure with thermal barrier coating and micro swirlers and defining a downstream end of the first fuel-air mixing zone, wherein fuel and air from the first fuel-air mixing zone pass through the porous structure of the flame holder and into a combustion zone of the combustor.

Apparatus, systems, and methods for enhancing solid propellant performance include seeding combusting energetic material, including solid propellant, with microwave energy at a controlled power and duration.

The invention discloses a pulverized coal and ammonia mixed fuel pre-pyrolysis combustion system and method. The system comprises a boiler, each layer of combustor of the boiler communicates with a pyrolysis furnace through a transition flue, pulverized coal and primary air are mixed and then communicate with an inlet of each pyrolysis furnace in multiple paths, and secondary air tangentially communicates with each pyrolysis furnace. An outlet of a liquid ammonia storage tank communicates with a liquid ammonia inlet of an evaporator, ammonia gas at an ammonia gas outlet of the evaporator is divided into a plurality of ammonia gas branches to communicate with ammonia nozzles of transition flues after passing through an ammonia gas main pipeline, a main regulating valve is arranged on the ammonia gas main pipeline, and a regulating valve is arranged on each ammonia gas branch. The invention further discloses a working method of the system. The pulverized coal and ammonia mixed fuel pre-pyrolysis combustion system and method have the advantages of large-proportion ammonia blending combustion and low nitrogen oxide emission.

A method for increasing flamespeed of an internal combustion engine by burning a certain gasoline composition is provided. The gasoline composition contains (a) a major amount of a mixture of hydrocarbons in the gasoline boiling range and (b) a minor amount of at least one hydrocarbon having 5 to 12 carbon atoms and containing at least one cyclopropyl group and at least one acetylenic group.

A fuel injector for injecting alternate fuels having a different energy density in a gas turbine is provided. A first fuel supply channel (18) may be fluidly coupled to a radial passage (22) in a plurality of vanes (20) that branches into passages (24) (e.g., axial passages) to inject a first fuel without jet in cross-flow injection. This may be effective to reduce flashback in fuels having a relatively high flame speed. A mixer (30) with lobes (32) for injection of a second fuel may be arranged at the downstream end of a fuel delivery tube (12). A fuel-routing structure (38) may be configured to route the second fuel within a respective lobe so that fuel injection of the second fuel takes place radially outwardly relative to a central region of the mixer. This may be conducive to an improved (e.g., a relatively more uniform) mixing of air and fuel.

The invention relates to the field of preparation of wear-resistant coatings, in particular to a preparation method of a nickel-based wear-resistant coating for a nuclear second-stage pump bearing, which solves the problem of difficulties in preparation of bearing wear-resistant coatings for a nuclear environment. The nickel-based wear-resistant coating for the nuclear second-stage pump bearing is prepared by spraying powder onto a matrix through a supersonic flame spraying technology. According to process parameters, the pressure of oxygen is 140 to 160psi; the pressure of propane is 80 to 100psi; the pressure of compressed air is 95 to 110psi; the flow of the oxygen is 340 to 370 standard cubic foot per hour (SCFH); the flow of the propane is 150 to 180SCFH; the flow of the compressed air is 880 to 920SCFH; powder feeding amount is 20 to 30g/min; and a spraying distance is 250 to 290mm. The wear-resistant coating prepared by the method is suitable for the nuclear second-stage pump bearing and has important application value.

The use of a solution of salt within ammonia as a fuel. The preferred ammonia/salt solution is an ammonium nitrate solute (NH₄NO₃) within the solvent anhydrous ammonia (NH₃). The solution may also contain a small amount of water (H₂O).

The invention discloses a novel wake flow combustor with a random accumulation structure. The novel wake flow combustor comprises a combustion cavity, the bottom of the combustion cavity is connectedwith a gas mixing pipeline, a gas backflow area, two layers of foamed ceramics and an accumulation chamber are sequentially arranged in the combustion cavity from bottom to top, a Raschig ring is arranged at the bottom in the combustion cavity, the two layers of foamed ceramic are supported through the Raschig ring, and the gas backflow area is formed; and silicon-containing aluminum oxide pelletsare randomly accumulated in the accumulation chamber to form a porous medium layer, the combustion rate is increased through the silicon-containing aluminum oxide pellets, and the tempering phenomenon in the combustion process is reduced.

A gas-fired burner adapted for use on a liquid fuel. A method for essentially smokeless start-up and steady state operation of a gas-fired burner on a liquid fuel. The apparatus integrates a catalytic liquid fuel reformer with a flame burner designed for operation on a gaseous fuel of high Wobbe Index, e.g., natural gas. The method involves reacting a mixture of a liquid fuel and oxidant in a catalytic reformer to obtain a gaseous reformate having a low Wobbe Index; and thereafter combusting the gaseous reformate, optionally augmented with liquid co-fuel and oxidant, in the gas-fired burner under diffusion flame conditions. The invention allows commercial gas-fired appliances to be operated on a liquid fuel, thereby offering advantages in logistics and camp operations.