Abstract: A motor, fan and cyclonic separation apparatus arrangement for a vacuum cleaner, the arrangement comprising: a motor coupled to a fan for generating air flow; a cyclonic separation apparatus located in a path of the air flow generated by the fan; and a pre-fan filter located in the path of the air flow downstream of the cyclonic separation apparatus and upstream of the fan, wherein the cyclonic separation apparatus comprises at least one cyclone comprising: a cyclone body with a longitudinal axis; an air inlet port arranged tangentially through a side of the cyclone body; and an air outlet port through a longitudinal end of the cyclone body, wherein the pre-fan filter is arranged upon the air outlet port of the or each cyclone.

Abstract: An air filter and dust collector are provided. In one embodiment, the air filter includes a filter element coupled at a first end to a end cap and at a second end to a first side of a rectangular filter flange assembly. The rectangular filter flange assembly includes a central aperture open to an interior region bounded by the filter element. A rectangular gasket is disposed on the second side of the filter flange assembly and circumscribes the central aperture.

Abstract: A motor, fan and cyclonic separation apparatus arrangement for a vacuum cleaner comprising: a motor coupled to a fan for generating air flow; and a cyclonic separation apparatus located in a path of the air flow generated by the fan. The cyclonic separation apparatus comprises: a plurality of cyclones each with an air inlet port and an air outlet port; and a cooling air flow path. The motor comprises a permanent magnet brushless motor, a switched reluctance motor or a flux switching motor. The fan has an outer diameter the same or less than the diameter of the motor. The plurality of cyclones, the motor and the fan are arranged in a circular array about a central axis of the cyclonic separation apparatus. The arrangement comprises a baffle for directing air flow from the fan out of the circular array. The motor is located in the cooling air flow path.

Abstract: A motor, fan and cyclonic separation apparatus arrangement for a vacuum cleaner, the arrangement comprising: a motor coupled to a fan for generating air flow; and a cyclonic separation apparatus located in a path of the air flow generated by the fan, wherein the cyclonic separation apparatus comprises: a plurality of cyclones each with an air inlet port and an air outlet port wherein the cyclones are arranged in a generally circular array about a central axis of the cyclonic separation apparatus; and a cooling air flow path, wherein the motor is nested within the generally circular array of cyclones and wherein the motor is located in the cooling air flow path. A vacuum cleaner comprising the motor, fan and cyclonic separation apparatus arrangement.

Abstract: A cyclonic separation apparatus for a vacuum cleaner, the cyclonic separation apparatus comprising: a first cyclonic separating unit comprising a hollow substantially cylindrical dirt container with a central axis, an air inlet port arranged tangentially through a side wall of the dirt container and an air outlet; and a second cyclonic separating unit comprising at least one cyclone with an air inlet port and an air outlet port, wherein the second cyclonic separating unit receives air flow downstream from the first cyclonic separating unit, wherein the second cyclonic separating unit is located within the dirt container and wherein the second cyclonic separating unit is detachably connected to the dirt container for removal through either longitudinal end of the dirt container. A vacuum cleaner comprising a motor coupled to a fan and the cyclonic separation apparatus.

Abstract: A motor, fan and dirt separating means arrangement for a vacuum cleaner, the arrangement comprising: a motor with a drive shaft; a fan coupled to the motor for generating air flow; and a dirt separating means located in a cleaning path of the air flow, the cleaning path being between a dirty air inlet and the fan, wherein the motor is located in a cooling path of the air flow, the cooling path being between a clean air inlet and the fan, wherein the air flow through the cleaning path is substantially greater than through the cooling path in normal operating conditions and wherein the cleaning path and the cooling path of the air flow combine substantially at the fan inlet. A vacuum cleaner comprising the motor, fan and dirt separating means arrangement.

Abstract: The intake device for an engine includes a carburetor section and an air cleaner section. The carburetor section includes a body having an intake passage which has an opening communicating with the air cleaner section and a choke valve being a butterfly valve having a plate-like valve body. The air cleaner section includes an air filter, an air-flow chamber provided between the air filter and the intake passage, and a reverse-flow restriction surface provided within the air-flow chamber. The air cleaner section further includes a plate-like partition extending from a location near an air-cleaner side periphery of the valve body of the choke valve in the full-open position to a location near the reverse-flow restriction surface so as to continue the periphery.

Abstract: Dehumidifiers having improved heat exchange blocks and associated methods of use and manufacture are disclosed. A heat exchange system in accordance with a particular embodiment can include a plurality of elements with a plurality of airflow channels. A plurality of peripheral spacers are positioned toward edges of neighboring elements and extend in a first direction. A first airflow path extends in the first direction, and is at least partially defined by the corresponding elements and the peripheral spacers. A second airflow path is defined by the airflow channels and extends in a second direction, and an airflow blocker is positioned at a corner portion of the elements to prevent fluid communication between the first and the second airflow paths at the elements. In certain embodiments, the heat exchange system can further include a dehumidifier having an evaporator positioned between the first and second airflow paths.

Abstract: A collapsible air cleaner filter is provided. The filter includes a pleated media filter having a first end, a second end, and a filter media extending between the first and second ends, wherein the filter media includes a first plurality of flexible end portions and a second plurality of flexible end portions, the first and second plurality of flexible end portions are separated by a plurality of pleats, and the filter media extends a first length between the first and second plurality of flexible end portions, and an end member coupled to the first end of the pleated media filter, the end member extending a second length parallel to the first length, the first length being greater than the second length.

Abstract: A header height control system (208) includes a header height sensor (108) and a tire compression sensor (212) coupled to an electronic control unit (210). The two signals are combined by the electronic control unit (210) to derive a compensated header height signal that compensates for the transient flexure of the pneumatic tires of the vehicle. This compensated header height signal is then used in a header height control algorithm executed by the electronic control unit (210) to control the height of the header (104).

Abstract: The present relates to an undermount implement for a tractor, to an installation mechanism and to a method therefore. The undermount implement comprises a casing, a pair of wheels where each wheel is located on opposite lateral sides of the casing, a drive connector for being connected to a drive mechanism of the tractor, the drive connector actuating the implement when the drive mechanism is in function, and an installation mechanism.

Abstract: A decelerator apparatus for mounting at the end of a pneumatic or gravity-fed fruit harvesting or delivery tube. The decelerator comprises a housing with a moving decelerator body aligned with a fruit-receiving inlet connected to the delivery tube. The decelerator body, for example a padded rotating wheel, moves at a speed slower than the speed at which the fruit is delivered into the housing, includes multiple depressions or indentations for receiving and separating fruit, and further defines a compressive deceleration path that moves the fruit in a compressive but protective fit toward a housing exit, releasing the fruit after the fruit has been decelerated to the speed of the moving body.

Abstract: A buoyant rope is presented consisting of at least two strands, wherein each strand comprises synthetic fibers, wherein the rope is characterized in that the synthetic fibers comprise a component A) and a component B), wherein A) is at least one monofilament and B) is at least one multifilament yarn, the filaments of which are hollow-fiber filaments.

Abstract: The apparatus is intended for vertically linking a first chain and a second chain under water. The apparatus is characterised in that it comprises a lower base (1) with an open cross-shaped slot (5) into which the last link of the first chain (6) is inserted, extending above said lower base (1), while a guide/holder (2) for the second chain (7) is attached to the lower base (I) over said slot, said guide/holder containing an H-shaped shackle (II) that is coupled to the last link of said second chain (7) by means of a first bolt (12), the last link of the first chain (6) being inserted in the free space in the shackle (11) so that both chains (6-7) are coupled by means of a second bolt (13).

Abstract: The invention provides a gas-turbine fuel nozzle (1) that includes a plurality of fuel supply channels (3a) to which fuel is supplied, a plurality of fuel/scavenging-fluid supply channels (3b) to which fuel or a scavenging fluid for scavenging the fuel is supplied, and a plurality of injection holes (7a, 7b) that are provided at downstream ends of the fuel supply channels (3a) or the fuel/scavenging-fluid supply channels (3b) and that inject the fuel guided from the fuel supply channels (3a) or the fuel/scavenging-fluid supply channels (3b); a scavenging-fluid supply channel (21) that is connected to the fuel/scavenging-fluid supply channels (3b) to guide the scavenging fluid; and scavenging-fluid cooling means (23) for cooling the scavenging fluid to a temperature lower than a self-ignition temperature of the fuel.

Abstract: A nacelle for a turbojet engine of an aircraft is provided that includes a fan case, an internal structure positioned upstream from the fan case, and a thrust reverser positioned downstream from the fan case. The thrust reverser includes a cowl delimiting an external line (LE) and including two removable half cowls. A device for absorbing circumferential stresses are shaped so as to lock the half cowls in the closed position when it occupies a locking configuration on the one hand and for allowing the opening of the half cowls when it occupies an unlocking configuration on the other hand. The stress absorbing device is positioned under an upstream portion of a pylon and is exclusively attached to the half cowls in order to allow the opening of the two half cowls independently of the opening/closing of an external fan cowl.

Abstract: A cold start NO2 generation system includes a catalyst control module that identifies a portion of a three-way catalyst that corresponds to a nitrogen dioxide zone. A diagnostic module determines a temperature in the nitrogen dioxide zone, and a fuel control module adjusts an air/fuel ratio based on the temperature in the nitrogen dioxide zone. A cold start NO2 generation method includes identifying a portion of a three-way catalyst that corresponds to a nitrogen dioxide zone. The method further includes determining a temperature in the nitrogen dioxide zone and adjusting an air/fuel ratio based on the temperature in the nitrogen dioxide zone.

Abstract: An ammonia dosing system has a canister whose interior contains ammonia luminophores and a delivery apparatus for delivering ammonia from the canister interior into an exhaust after-treatment system to entrain with engine exhaust flowing toward an SCR catalyst for catalytic conversion of NOx in engine exhaust.

Abstract: A system for regenerating a particulate filter mounted on an exhaust pipe of a gasoline engine including a plurality of cylinders and an ignition device for igniting fuel and air in the cylinder, a three-way catalyst device mounted on the exhaust pipe connected to the gasoline engine, and to oxidize or reduce exhaust gas, the particulate filter mounted on the exhaust pipe downstream of the three-way catalyst device to trap particulate matter and regenerate the particulate matter using heat of the exhaust gas, a differential pressure sensor mounted upstream and downstream of the particulate filter and to measure a pressure difference of the particulate filter, and a control portion to receive the measured pressure difference and control parameters to determine an amount of non-ignited fuel which is not ignited and flows to the three-way catalyst device among the fuel flowing into the plurality of cylinders.

Abstract: A method pertaining to an SCR system for cleaning of exhaust gases from an engine (150). A dosing unit (250) is in thermal contact with the engine's exhaust system and supplies a reducing agent to an exhaust duct (240) of the exhaust system. Determining (s340) whether there is an undesired temperature level of the dosing unit (250). If yes, limit (s360) the temperature of the exhaust duct (240) by controlling operation of the engine. Also, a computer programme product containing programme code (P) for implementing the method. Also a device and a motor vehicle (100) which is equipped with the device are disclosed.

Abstract: An assembly for mixing liquid within a gas flow includes a hollow conduit that is configured for containing a flow of gas and liquid droplets. The assembly also includes multiple spaced blades and an impingement element. Each of the blades is operatively connected to and extends from the impingement element and is connected to an inner wall of the conduit. The impingement element is upstream of the blades in the flow of gas. The impingement element and the blades are configured to create a preferred distribution of the liquid droplets within the gas flow downstream of the blades within the conduit.

Abstract: An exhaust gas purification device is arranged in an exhaust gas route of a common rail type engine. At least one of an intake air throttle device and an exhaust gas throttle device are arranged in intake and exhaust systems of the engine. In the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, an auxiliary renewing mode which raises the temperature of an exhaust gas from the engine by actuating at least one of the intake air throttle device and the exhaust gas throttle device is executed, and in the case that the clogged state of the exhaust gas purification device is not improved even by executing the auxiliary renewing mode, a forced renewing mode which supplies a fuel into the exhaust gas purification device by a post injection is executed.

Abstract: A clamp includes a curved band having an inner surface, an outer surface, a first end, and a second end. The band is characterized by a substantially V-shaped cross-section in a radial plane of the band. The inner surface of the band defines the inside contour of the V-shaped cross-section. The clamp also includes a fastener configured to draw together the first and second ends such that the band may be tightened around adjacent flanges of objects to be clamped together. The inner surface is configured to squeeze the flanges together and clamp the objects. The band includes a reinforcement configured to stiffen the substantially V-shaped cross-section and minimize yielding of the cross-section when the objects are being clamped. An engine assembly that includes a first exhaust component and a second exhaust component having respective first and second flanges being squeezed and clamped together via the clamp is also disclosed.

Abstract: A hydraulic control system and a hydraulic control method are disclosed. The hydraulic control system comprises a first closed pump (P1) and a first engine (M1) connected with each other, a second closed pump (P2) and a second engine (M2) connected with each other, and a hydraulic motor (P3). The first closed pump (P1), the second closed pump (P2) and the hydraulic motor (P3) are connected in parallel. Compared with the prior art, the present hydraulic control system has advantages of wider engine model selection range, higher reliability and better micro-motion performance.

Abstract: In various embodiments, coupling losses between a cylinder assembly and other components of a gas compression and/or expansion system are reduced or eliminated via valve-timing control.

Abstract: In various embodiments, coupling losses between a cylinder assembly and other components of a gas compression and/or expansion system are reduced or eliminated via valve-timing control.

Abstract: In various embodiments, coupling losses between a cylinder assembly and other components of a gas compression and/or expansion system are reduced or eliminated via valve-timing control.

Abstract: A hydraulic transmission system for a zero-turn vehicle, comprises first and second transaxles each of which includes an axle, a casing supporting the axle, a fluid sump provided in the casing, first and second ports provided on the casing and opened outward from the casing, an HST circuit, a charge pump disposed in the casing, and a charge passage disposed in the casing to supply the HST circuit with fluid delivered from the charge pump. A first pipe connects the first ports of the transaxles, thereby making the flow of fluid from the charge pump of the first transaxle to the fluid sump of the second transaxle. A second pipe connects the second ports of the transaxles, whereby overflowing fluid of the fluid sump of the second transaxle is released to the fluid sump of the first transaxle via the second pipe.

Abstract: A system and method for converting wave energy into electric energy in an intelligent, practical, and efficient manner. The system utilizes a power input shaft coupled with a vertically reciprocating buoy to rotate a crank gear and a ratchet gear meshing therewith. When the gears rotate, a plurality of generators coupled therewith produce electric energy. A flexible pivot device connects the power input shaft and the crank gear for absorbing impacts against the system from irregular and variable passing waves. The power input shaft is adjusted in response to water level fluctuations for maximum efficiency. A counterbalancing and maintenance device is coupled with the buoy to improve energy conversion efficiency and to uplift the buoy to a safe position in extreme conditions. An intelligent control system is included to monitor, control, and optimize the operations of the system.

Abstract: The power recovery system includes: a Stirling engine; and a vaporization device that stores a liquid therein in such a manner that the liquid is kept in contact with an upper portion of a cylinder and vaporizes the liquid by supplying the cold heat of the liquid to the upper portion of the cylinder. The vaporization device includes a liquid container which stores the liquid therein in such a manner that the liquid is kept in contact with the upper portion of the cylinder, and an outer container embracing the liquid container and defining a space portion around the liquid container. The space portion communicates with the liquid container and an exhaust vent. Gas vaporized in the liquid container passes between the liquid container and an outer wall surface of a heat insulating material during passage thereof from the liquid container to the exhaust vent through the space portion.

Abstract: A shockwave-actuated power device includes a cylinder, a regulating module, and a piston assembly. The cylinder includes a chamber and a filling port in communication with the chamber. The regulating module includes first and second partitioning members and a driving member. The first and second partitioning members are received in the chamber, dividing the chamber into a high-pressure filling section, a shockwave train developing/actuating section, and a high-energy shockwave producing section located between the high-pressure filling section and the shockwave train developing/actuating section, with the filling port located in the high-pressure filling section. The driving member drives the first and second partitioning members to control communication between the high-pressure filling section, the high-energy shockwave producing section, and the shockwave train developing/actuating section.

Abstract: A multi cycle geothermal power plant (5) has at least the following cycles: a primary cycle (10) configured for a geothermal reservoir fluid; a closed loop second cycle (20) having a vaporizer (7), spanning the primary cycle (10) and second cycle (20), for transferring thermal energy from the primary cycle (10) to the second cycle (20); and at least one further closed loop water/steam cycle (30) having a heat exchanger (8), spanning the primary cycle (10) and each further cycle (30), for transferring thermal energy from the primary cycle (10) to each further cycle (30). By providing indirect secondary cycles, the power plant (5) is capable of exploiting high impurity wells with high energy extraction efficiency.

Abstract: In a startup period for a solar thermal electricity generating system, a non-solar source of steam heats a downstream receiver (for example, a superheating receiver) prior to insolation being available. Insolation, once available, heats an upstream receiver (for example, an evaporator). The upstream receiver can be arranged in a recirculation loop with a steam separation drum, which may be bypassed during the initial heating of the upstream receiver by insolation. Once sufficient temperature and pressure have been reached, steam from the upstream receiver is directed to the downstream receiver by way of the steam separation drum to replace the non-solar source of steam. Heating of the downstream receiver using steam from the upstream receiver continues until a threshold temperature and pressure are reached. Insolation is then directed at both the upstream and downstream receivers to generate steam for electricity production by a turbine.

Abstract: Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): wherein R1, R2, R3, and R4 are each independently selected from the group consisting of: H, F, Cl, Br, and C1-C6 alkyl, at least C6 aryl, at least C3 cycloalkyl, and C6-C15 alkylaryl optionally substituted with at least one F, Cl, or Br, wherein formula (I) contains at least one F and optionally at least one Cl or Br, provided that if any R is Br, then the compound does not have hydrogen. The working fluids are useful in Rankine cycle systems for efficiently converting waste heat generated from industrial processes, such as electric power generation from fuel cells, into mechanical energy or further to electric power. The working fluids of the invention are also useful in equipment employing other thermal energy conversion processes and cycles.

Abstract: Various systems and methods for an engine system which includes a throttle turbine generator having a turbine which drives an auxiliary generator and disposed in a throttle bypass are described. In some examples, a throttle bypass valve is controlled to adjust airflow through the throttle bypass responsive to airflow to cylinders of the engine. In other examples, an operating parameter such as throttle position is controlled based on transient operating conditions of the engine. In still other examples, charging of a battery is coordinated between the auxiliary generator and a primary generator.

Abstract: A power plant includes a first gas turbine engine, a second gas turbine engine, a flue gas duct, a CO2 capture system for treating flue gases from the second gas turbine engine and an exhaust system. It additionally includes at least one among a direct connection between the first gas turbine engine and the exhaust system, and a damper for on-line regulating the flue gases flow through it, a direct connection between the first gas turbine engine and the CO2 capture system, and a damper for regulating the flue gases flow through it, a supply of fresh oxygen containing fluid for the second gas turbine engine.

Abstract: A fuel injector is provided, including a fuel injector body, a plurality of fuel vanes, and a plurality of fuel pegs. The injector body includes a manifold and an inlet. The manifold is configured for receiving fuel, and the inlet is configured for receiving air. The fuel vanes are located within the injector body and are positioned in a direction that is generally parallel with a longitudinal axis of the injector body to orient the air flowing from the inlet. The plurality of fuel pegs are fluidly connected to the manifold and are arranged within the plurality of fuel vanes. The plurality of fuel pegs are each spaced at a distance that is about equal between each of the plurality of fuel pegs.

Abstract: A combustor liner is provided. The combustor liner has a first end, including a forward end liner formed to define a converging interior through which a main flow is directed to flow and a second end. The second end is fluidly coupled to an aft portion of the first end and includes an aft end liner formed to define a diverging interior receptive of the main flow and through which the main flow is directed to continue to flow.

Abstract: A turbomachine combustor assembly includes a combustor body, a combustor liner arranged within the combustor body and defining a combustion chamber, a fluid passage defined between the combustor body and the combustor liner, and an annular flow conditioning member arranged in the fluid passage and extending about the combustor liner.

Abstract: An augmentor for a gas turbine engine includes an augmentor spray bar with a spray bar outlet, and an augmentor spray bar tip. The spray bar tip includes a tip body, a tip bushing and a tip support strut. The tip body includes a first flow passage extending therethrough between a tip inlet and a tip outlet, wherein the tip inlet is connected to the spray bar outlet. The tip bushing includes a bushing bore. The tip body extends through the bushing bore defining a second flow passage between the tip body and the tip bushing. The tip support strut connects the tip body to the tip bushing across the second flow passage.

Abstract: A method for cooling a gas turbine engine includes supplying power to a motor to generate mechanical motion and translating the mechanical motion of the motor to a shaft of the gas turbine engine to rotate a compressor stage and a turbine stage after the engine has been shutdown to circulate air within the engine and cool engine components. A system for preventing hot soakback in an auxiliary power unit includes a starter motor, a compressor, a turbine, a shaft connected to at least one stage of the compressor and at least one stage of the turbine, a gearbox for connecting the starter motor to the shaft, a temperature sensor and a controller. The controller receives information from the temperature sensor and instructs the starter motor to rotate and drive the shaft when the temperature sensor senses a temperature above a low limit temperature threshold.

Abstract: A method and device producing a setpoint signal representing a flow rate of fuel that a metering unit having a slide valve is to supply to a fuel injection system of a combustion chamber in a turbine engine, the position of the valve depending on the setpoint signal. The method: obtains a first signal representing a measurement as delivered by a flow meter of a flow rate of fuel injected into the chamber; evaluates a second signal representing the flow rate of fuel injected into the chamber based on a measurement of the position of the valve; estimates a third signal representative of the measurement delivered by the flow meter by applying a digital model of the flow meter to the second signal; and produces the setpoint signal by adding a compensation signal to the first signal, the compensation signal obtained by subtracting the third signal from the second signal.

Abstract: A gas turbine is operated using a varying blend of a first fuel, preferably natural gas, and a second fuel that is hydrogen. The hydrogen concentration is varied depending on operating conditions in order to reduce emissions of CO and NOx, and/or to mitigate LBO. The fuel mixture is varied using a controller based on a combination of factors in a modular operation concept to address different issues according to relevant load limitations. A method of operating a gas turbine according to this modular operational concept is also provided.

Abstract: Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes a gas turbine system configured to stoichiometrically combust a compressed oxidant and a fuel in the presence of a compressed recycle exhaust gas and expand the discharge in an expander to generate a gaseous exhaust stream and drive a main compressor. A boost compressor can receive and increase the pressure of the gaseous exhaust stream and inject it into an evaporative cooling tower configured to use an exhaust nitrogen gas having a low relative humidity as an evaporative cooling media. The cooled gaseous exhaust stream is then compressed and recirculated through the system as a diluent to moderate the temperature of the stoichiometric combustion.

Abstract: Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes a gas turbine system configured to stoichiometrically combust a compressed oxidant derived from enriched air and a fuel in the presence of a compressed recycle exhaust gas and expand the discharge in an expander to generate a recycle exhaust stream and drive a main compressor. A boost compressor receives and increases the pressure of the recycle exhaust stream and prior to being compressed in a compressor configured to generate the compressed recycle exhaust gas. To promote the stoichiometric combustion of the fuel and increase the CO2 content in the recycle exhaust gas, the enriched air can have an increased oxygen concentration.

Abstract: A control system is provided. The control system includes at least one sensor that is positioned within a turbine engine and is configured to detect at least one first operating parameter therein. A controller is coupled to the sensor. The controller is configured to receive at least one second operating parameter of the turbine engine. Moreover, the controller is configured to control a flow of a fluid to a rotor assembly within the turbine engine such that at least one of the first operating parameter and the second operating parameter is less than at least one threshold value.

Abstract: A control system is provided. The control system includes at least one sensor positioned within a turbine engine, wherein the sensor is configured to detect at least one first operating parameter within the turbine engine. A controller is coupled to the sensor and the controller is configured to receive at least one second operating parameter of the turbine engine. The controller is also configured to control a flow of a fluid to a rotor assembly within the turbine engine such that the fluid is distributed substantially uniformly within the rotor assembly and at least one of the first operating parameter and the second operating parameter is less than at least one threshold value.

Abstract: A fuel system comprises a fuel actuation arrangement 28 operable to split a metered flow of fuel into at least a first stream and a second stream, a control unit 25 controlling the operation of the fuel actuation arrangement 28, and wherein the control unit 25 controls the operation of the fuel actuation arrangement 28 in response to the output of a temperature sensor 34 sensitive to a gas temperature downstream of the high pressure compressor 14 of an associated engine and the output of a gas sensor 24 sensitive to at least one parameter of the composition of a gas downstream of a combustor 15 of the engine.

Abstract: A fuel nozzle for a turbine combustor includes a nozzle head configured to supply a fuel/air mixture to a burner tube attached to said nozzle head and extending downstream of the nozzle head. The burner tube is provided with plural holes for introducing a fluid into the burner tube to thereby treat (e.g., cool) an interior wall of the burner tube by effusion.

Abstract: An auxiliary power unit includes a turbomachine coupled to a generator. A flow path is arranged through the generator and is configured to provide fluid to the generator. A deprime valve is arranged in the flow path and is configured to pulse fluid flow to the generator in response to a command. A controller is configured to send the command to the deprime valve to pulse the fluid flow throughout operation of the auxiliary power unit.