Abstract: A method of adjusting a ratio of NO to NO2 in a flow of exhaust gas is disclosed. The method includes directing a first portion of the exhaust flow through at least one first channel, wherein the at least one first channel is a wall-flow channel, and directing a second portion of the exhaust flow through at least one second channel, wherein the at least one second channel is an open flow-through channel. The method further includes converting NO into NO2 at a first rate in the first portion of the exhaust flow as the first portion of the exhaust flow passes through the at least one first channel and converting NO into NO2 at a second rate in the second portion of the exhaust flow as the second portion of the exhaust flow passes through the at least one second channel, the second rate being slower than the first rate.

Abstract: The present disclosure is directed to a filtering element. The filtering element may comprise at least one channel defined by at least one wall. The at least one wall extends longitudinally from a first end of the channel to a second end of the channel, the at least one channel having an unobstructed first end and an unobstructed second end. The filtering element further includes at least one partial barrier configured to reduce a path of a flow of exhaust through the at least one channel, the at least one partial barrier being positioned within the at least one channel so as to redirect a portion of the exhaust flow within the channel. The at least one channel includes a selective catalytic reduction catalyst on at least a portion of one of a surface of the at least one partial barrier or a surface of the at least one wall.

Abstract: An exhaust heat recovery system 25 provided with a plurality of heat pipes 60, 61 provided with heat recovery parts 60a, 61a and heat exchange parts 60b, 61b. The heat pipes recover heat from exhaust gas exhausted from an internal combustion engine at the heat recovery parts and transfer this recovered heat to an object to be heated at the heat exchange parts. The heat recovery part 60a of the first heat pipe 60 recovers heat from the exhaust gas at an exhaust purification catalyst 20? provided in an engine exhaust passage or its upstream side. The heat recovery part 61b of the second heat pipe 61 recovers heat from the exhaust gas at the downstream side of the exhaust purification catalyst. Due to this, there is provided an exhaust heat recovery system which can recover at least a fixed amount of exhaust heat at all times while maintaining a warm-up performance of the exhaust purification catalyst.

Abstract: Systems and methods are provided for heating a fluid comprising an opened-loop heating circuit or a closed-loop heating circuit both comprising a rotary heating device, such as a water brake, and a closed-loop direct-fired boiler heating circuit; and systems and methods for evaporating a fluid and systems and methods for concentrating a fluid based on these heating circuits.

Abstract: An exhaust gas treatment device, in particular for an internal combustion engine, is fitted with a housing including an entrance and an exit. At least one porous substrate is accommodated in the housing and has an exhaust gas flowing through the substrate. The porous substrate is arranged in the flow path from the entrance to the exit. At least one thermoelectric generator is provided on the housing.

Abstract: Exhaust gas systems and methods are disclosed. A system includes an extensible duct assembly to communicate an exhaust gas from an internal combustion engine to an exhaust gas receiver. An angularly positionable ball joint assembly may be coupled to the duct assembly to fluidly and sealably couple the duct assembly to at least one of the outlet and the exhaust receiver. A method of installing an exhaust gas system includes presenting a first portion of the exhaust gas system to one of an exhaust gas outlet and an exhaust gas receiver, and positioning a second portion of the exhaust gas system relative to the other of the exhaust gas outlet and the exhaust gas receiver. The first portion and the second portion may be adjusted to achieve an alignment, and the first portion and the second portion may be sealably coupled to fixedly retain the alignment.

Abstract: A pressure sensor (17) is provided for detecting the discharge pressure of a hydraulic pump (11). An abnormality detection section (23) of a controller (21) detects a dry operation of the hydraulic pump (11) when the discharge pressure detected by the pressure sensor (17) becomes equal to or lower than a judgment reference pressure determined in advance according to the driving rotation speed of the hydraulic pump (11).

Abstract: method is provided for recuperating potential energy during a lowering operation of a load, wherein a hydraulic system is adapted to lift and lower the load.

Abstract: The present disclosure is directed toward a hydraulic control system. The system may have a pump and a tool actuator configured to move a tool with a flow of pressurized fluid provided by the pump. The system may further have a tool control valve configured to control the flow of pressurized fluid to the tool actuator. The system may also have a controller operably connected with the tool control valve and the pump. The controller may be configured to receive a tool movement request. The controller may further be configured to estimate a change in a flow demand across the tool control valve associated with the tool movement request. The controller may also be configured to command adjustment of a discharge flow rate of the pump based on the estimated change in flow demand to satisfy the tool movement request.

Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a pump configured to pressurize fluid, a displacement control valve configured to affect displacement of the pump, and a tool control valve configured to receive pressurized fluid from the pump and to selectively direct to the pressurized fluid to a hydraulic actuator. The hydraulic control system may also have a controller in communication with the displacement control valve. The controller may be configured to determine a pressure gradient across the tool control valve substantially different than a desired pressure gradient, to determine a desired condition of the displacement control valve based the pressure gradient, and to determine a flow force applied to the displacement control valve based on the desired condition. The controller may be further configured to generate a load sense response signal directed to the displacement control valve based on the desired condition and the flow force.

Abstract: A flow rate control device of a hydraulic pump in a power steering system, may include an upper cam ring having a cam profile, which is fixedly installed, a lower cam ring having a cam profile, which is engaged with the upper cam ring to be relatively rotatable about the upper cam ring, and a rotor including a plurality of veins and engaged with the upper and lower cam rings to form an inner space therebetween to pressurize oil by protruding the veins in the inner space by centrifugal force while rotating.

Abstract: A control for a variable displacement pump disposed in a hydraulic system obtains a requested signal from a manual control device and provides a command signal to a valve operating to adjust a displacement setting of the variable displacement pump. The control provides the command signal based on the requested signal, and scales the requested signal based on a sensed or calculated load of the system.

Abstract: A hydraulic system includes an engine driven adjustable hydraulic pump which supplies fluid to a hydraulic consumer, and an electronic control unit. The adjustable pump includes flow controller for controlling a pressure difference between the consumer and the adjustable pump to a pre-determined control pressure difference. The flow controller includes an actuator controlled by the control unit, through which the pressure difference can be controlled. The electronic control unit receives an engine speed signal and controls the actuator to control the pressure difference, in order to make power delivery of the adjustable pump conform to the operating conditions of a vehicle.

Abstract: In accordance with various aspects of the present invention, a method and system for a buoyancy engine is presented. In an exemplary embodiment, the buoyancy engine includes a divider to separate a liquid environment from a gas environment, and a reservoir aperture in the divider. A rotating element, approximately opposite the reservoir aperture, provides tension to, and helps rotate, a segmented chain. The segmented chain is configured to form a solid inner surface when transitioning between the liquid and gas environments, but separate during vertical travel. As the segmented chain travels between the liquid and gas environments, a rotary motion is created which can be captured as electrical or mechanical energy.

Abstract: A cooling tower system is provided that can exhibit increased energy efficiency. The cooling tower system includes a cooling tower unit, an expansion engine and a power operated component such as a fan or pump. The process fluid is first used to heat a working fluid for an expansion engine before being sent to the cooling tower for cooling. Power generated by the expansion engine is utilized to operate a component of the cooling tower such as a fan or a pump. The cooling tower is also utilized to provide cooling to condense the working fluid from a vapor to a liquid form cooling tower is used to remove waste heat from a process fluid.

Abstract: Master cylinder of a hydraulic braking circuit, particularly for a motor vehicle, comprising a piston (2) sliding axially in a body (4) comprising an annular lip seal (51) produced by molding, and comprising an internal, dynamic sealing lip (14) surrounding the piston and connected by a curved surface (36) to a planar rear face (30) comprising radial passages which are defined by blocks formed as projections on the rear face of the seal, these blocks being separated from the curved surface (36).

Abstract: The invention relates to a brake control system for motor vehicles comprising a brake pedal (1), a brake booster (4), a brake master cylinder (5). The system of the invention further comprises a simulator (3) pneumatically coupled to the piston (42) of the brake booster (4). This simulator (3) receives at least one brake command from the brake pedal (1) and in return establishes a pressure difference between the front chamber (40) and the rear chamber (41) of the booster so as to cause the piston (42) to move.

Abstract: A pump device and method minimizes the quantity of air in a vehicle brake system by reducing the volume of detrimental space. The device includes a piston movable between first and second end points, a line system that conducts fluid through the device, and a closing element, movable between an open position releasing the flow of the fluid and a closed position interrupting the fluid flow, that selectively releases the flow of the fluid through the device. The line system includes a through-line formed in the piston for conducting the fluid through the piston. By virtue of a section of the through-line that receives the closing element in the piston, a force is generated that is transmittable from the fluid to the closing element that moves the closing element in the direction of its closed position when the piston is moving in the direction of the first end point.

Abstract: Integral multifunctional system for motor vehicle including a gas turbine (1) mounted on the exhaust pipe of the internal combustion engine (2) of the vehicle and mechanically coupled to a hydraulic pump (3), featuring also a serial hybrid hydraulic system (4), wherein the inlet of the hydraulic pump (3) is connected to the low pressure tank (5) of the serial hybrid hydraulic system (4) and the outlet of the hydraulic pump (3) is connected to the high pressure hydraulic accumulator (6) of the serial hybrid hydraulic system (4).

Abstract: An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle includes at least one exhaust line, at least one turbocharger and at least one exhaust-gas converter. The at least one exhaust-gas converter is provided between the internal combustion engine and the at least one turbocharger and has a first volume of at least 0.6 liters. A method for purifying exhaust gas and a vehicle having the system, are also provided.

Abstract: An embodiment is an apparatus for providing thermal management of a diesel aftertreatment device. The apparatus includes an intake throttle, at least one exhaust gas recirculation (EGR) valve coupled to the intake throttle, a turbine bypass valve coupled to the at least one EGR valve and a control mechanism coupled to the intake throttle, the at least one EGR valve and the turbine bypass valve for selectively actuating at least one of the valves based on an engine operation profile.

Abstract: The invention relates to a gas-dynamic pressure wave machine for charging an internal combustion engine comprising a cell rotor (1) rotatably supported in a housing and located between an inlet for charge air and an exhaust line for combustion gases, wherein the outer circumference of the cell rotor (1) increases from the exhaust gas side (3) to the charge air side (4). The height of a cell of the cell rotor (1) in the radial direction remains constant in the longitudinal direction of the cell rotor (1), while the cross-sectional area of the individual cells increases from the exhaust gas side to the charge air side.

Abstract: An internal combustion engine with an exhaust gas manifold, an exhaust gas line, an exhaust gas turbocharger, by which the compressor provided to charge combustion air for the internal combustion engine is driven, and a bypass line, which branches from the exhaust gas line and in which a power turbine is arranged, wherein a short-circuit line branches from the bypass line and leads to a section of the exhaust gas line located downstream of the exhaust gas turbocharger. In addition, a first valve is positioned in the section of the exhaust gas line located downstream of the exhaust gas turbocharger in such a way that exhaust gas leaving the exhaust gas turbocharger is diverted into the short-circuit line and then to the power turbine.

Abstract: In an exhaust gas turbocharger for an internal combustion engine, comprising a turbine rotor, which is rotatably housed in a rotor chamber through which exhaust gas coming from the internal combustion engine is conducted and wherein the flow around the turbine rotor is conditioned by means of a guide apparatus comprising a support ring with rotatably mounted guide vanes. For fixing a first distance (A) between the support ring and the contour sleeve, at least one spacer element with a longitudinal axis, an outer surface and a cross-sectional area is provided so as to have a streamlined shape forming in the exhaust gas flow only a relatively narrow wake line and the spacer element is so arranged that the wake line formed thereby extends essentially through a flow space between two adjacent guide vanes without disturbing the exhaust gas flow around these guide vanes.

Abstract: A crossover for ducting exhaust produced by an engine. The crossover includes a front inside passage and rear outside passage. The front inside passage is configured to direct exhaust from one or more cylinders associated with a front of the engine to an inside volute of a turbocharger turbine. The rear outside passage is configured to direct exhaust from one or more cylinders associated with a rear of the engine to an outside volute of the turbocharger turbine. The inside volute is closer to the rear of the engine than the outside volute is.

Abstract: A hybrid power plant is disclosed wherein a first power plant produces secondary steam of a first, relatively low temperature using a renewable source of energy such as geothermal or solar. The steam from the renewable source plant is passed through a solar power plant that has an operating temperature higher than that of the first temperature which results in superheating the first temperature steam to the higher temperature in the higher temperature solar power plant. Higher efficiencies are obtained.

Abstract: Water expands in volume when it is heated up and contracts in volume when when heat is taken out of it. This invention relates to systems where solar energy causes volume changes in water so electrical energy is thereby produced. In a first preferred embodiment a field of solar mirrors concentrate solar energy on two targets alternately. Pipes feeding pressure to either side of a common piston are thereby energized alternately causing reciprocal movement of the piston. Through a gear mechanism an generator is then energized to produce electricity. In a second preferred embodiment the sun shines directly on a large bourdon tube. In a day temperature rises and falls. This causes the bourdon tube to coil and uncoi, energizing attached gearing and an electrical generator.

Abstract: An absorption power cycle system utilizes the working fluid from an absorption circuit to produce mechanical work. Such a system is useful in a wide range of absorption cycle applications.

Abstract: A steam engine of a simple constitution capable of efficiently obtaining mechanical energy not only from a heat source of a high temperature but also from various heat sources in a low-temperature state such as the exhaust heat of an internal combustion engine. The engine comprises a displacement engine 1 having a rotor 13 that rotates, a steam-generating portion 2 arranged thereunder and a condenser 3 arranged thereover. Water heated in the steam-generating portion 2 becomes the steam which is fed into the displacement engine 1, enters into an operation chamber that moves up, rotates the rotor 13 and is, thereafter, fed into the condenser 3 where it is condensed to turn into the condensate. The condensate falls on the rotor 13 on the lower side due to gravity, and is refluxed into the steam-generating portion 2 through the operation chamber that moves downward with rotation of the rotor 13.

Abstract: A gravity-driven pumping unit has an inlet valve connected to a condenser, an outlet valve connected to a boiler, and a staging zone between the inlet and outlet valves. The inlet valve, the outlet valve, the liquid line and entire path established between the condenser and boiler are oriented, sized and shaped to allow for the vapor refrigerant to freely move upward from the boiler to the condenser and to allow for the liquid refrigerant to freely drain downwards from the condenser to the boiler by gravity. A control system opens and closes the inlet and outlet valves in a proper sequence, which enables gravity-driven movement of liquid refrigerant from the condenser to the staging zone and then from the staging zone to the boiler, against a positive pressure differential between the boiler and condenser.

Abstract: Calcium magnesium aluminosilcate (CMAS) mitigation compositions selected from zinc aluminate spinel, alkaline earth zirconates, alkaline earth hafnates, rare earth gallates, beryl, and combinations thereof wherein the CMAS mitigation composition is included as a separate CMAS mitigation layer in an environmental barrier coating for a high temperature substrate component.

Abstract: A system is provided for mixing gas flows in a gas turbine engine. The system includes an annular wall structure which internally delimits a channel for a first gas flow. The wall structure includes a plurality of first wall portions. At least one of the first wall portions is movably arranged in a radial direction between a first position and a second position for mixing an external gas flow with the first gas flow.

Abstract: A pilot assembly for a fuel injector of a gas turbine engine may include a longitudinal passageway having an outlet end. A mass flow in the longitudinal passageway may generally flow towards the outlet end during operation of the engine. The pilot assembly may also include a liquid fuel nozzle that is positioned to direct a mixture of liquid fuel and air near the outlet end, and a compressed air inlet that is configured to direct air compressed by a compressor of the engine to a compressor discharge pressure into the longitudinal passageway without a substantial loss of pressure. The longitudinal passageway may also include a flow restriction section. The flow restriction section may be a narrowed section of the longitudinal passageway, in which an upstream side of the flow restriction section may have compressed air at substantially the compressor discharge pressure and a downstream side may have air at a lower pressure and a higher velocity.

Abstract: A method for forming a thermal barrier coating on a combustor panel or a fuel nozzle comprises the steps of: providing a component selected from the group consisting of a combustor panel, a bulkhead heat shield, and a fuel nozzle; optionally depositing a first layer of a metallic alloy onto the component; and depositing a ceramic composition layer using an electron beam physical vapor deposition technique. If the component is formed from a yttrium or other active element doped single crystal superalloy, the first layer may be omitted and the ceramic composition layer may be deposited directly onto a surface of the component.

Abstract: A combustor liner (231) for a gas turbine engine combustor (200) comprises an inner wall (232), an outer wall (238), a flow channel (244) formed there between, and an end-capping ring (246). The end-capping ring (246) is sealingly attached to the downstream end of the inner wall (232). In operation air passes within the end-capping ring (246), into the flow channel (244), and through holes (250) disposed in the inner wall (232). In some embodiments, an end-capping ring variation, a flow-diverting ring (357) comprises a plurality of holes (360) that, during gas turbine engine operation, may additionally dispense a flow of cooling air. One or more surfaces may be coated with a thermal barrier coating (237) to provide additional protection from thermal damage.

Abstract: A flow restrictor is provided for a lubrication circulation system. The flow restrictor comprises a body configured to obstruct a flow of lubricant within the lubricant circulation system. The body has one or more through holes communicating with upstream and downstream portions of the lubrication circulation system. Each of the one or more holes has a cross-sectional area sufficiently small, and a length sufficiently long, to prevent turbulent lubricant flow therethrough at temperatures below a first predetermined reference temperature. The one or more holes have sufficient aggregate cross-sectional area to allow a desired lubricant flow rate through the body at temperatures at or above a second predetermined reference temperature.

Abstract: An embodiment of the present invention may provide a variable speed booster, which receives air from a compressor of a gas turbine through an intercooler, to supply air at a relatively constant pressure to an air processing unit. An embodiment of the present invention may provide a speed adjustable booster turbine to energize a variable speed booster; which provides air at a relatively constant pressure to an air processing unit.

Abstract: A water purification system has a water electrolysis system, combustion water vapor production, and condensation chambers; hydrogen and oxygen channels; and a water vapor conduit. The water electrolysis system generates hydrogen and oxygen from water. The hydrogen and oxygen are transported to the oxygen chamber in channels. The hydrogen is combusted in the oxygen in the combustion chamber to generate heated water vapor. The water vapor production chamber generates water vapor from water. The water vapor conduit is disposed between the water vapor production chamber and the condensation chamber. Heated water vapor from the combustion chamber traveling from the combustion chamber into the condensation chamber generates a vacuum on the water vapor conduit, drawing water vapor from the water vapor production chamber into the condensation chamber. The condensation chamber receives water vapor from both the combustion chamber and the water vapor production chamber.

Abstract: A method of operating a gas turbine that utilizes vanadium-containing fuels at a combustion stage of the turbine thereby producing a combustion product having vanadium gaseous species, the method comprising increasing the volatility of the vanadium gaseous species in the combustion product atmosphere generated in a combustor of the turbine by increasing concentration of water vapor in the combustion product.

Abstract: A carbon dioxide absorbent comprising a liquid, nonaqueous oligomeric material, functionalized with one or more groups that either reversibly react with CO2 or have a high-affinity for CO2 is provided. The absorbent may be utilized in methods to reduce carbon dioxide in an exhaust gas, and finds particular utility in power plants.

Abstract: An embodiment of the present invention may provide a variable speed booster, which receives air from a compressor of a gas turbine through an intercooler, to supply air at a relatively constant pressure to an air processing unit. An embodiment of the present invention may provide an external power source to energize the variable speed booster; which provides air at a relatively constant pressure to an air processing unit.

Abstract: A gas turbine engine turbine cooling system includes an impeller and a diffuser directly downstream of the impeller, a bleed for bleeding clean cooling air from downstream of the diffuser, and one or more channels in fluid communication with the bleed. Each of the channels having a generally radially extending section followed by a generally axially aftwardly extending section terminating at an annular cooling air plenum connected to accelerators. The radially and axially aftwardly extending sections may be connected by a bend section of the cooling air channel and the axially aftwardly extending section may be angled radially inwardly going from the bend section to the cooling air plenum. Each of the cooling channels includes an inner wall formed by a forward end wall extending radially outwardly from an inner combustor casing, an annular cover covering a radially inner portion of the forward end wall, and the inner combustor casing.

Abstract: Disclosed is a gas turbine enabling turn down operation, of which the system and the operation can be simplified, and also the production cost and the maintenance cost can be reduced. Specifically disclosed is a gas turbine comprising: a compressor section (2); a combustor section (3); a turbine section (4); a gas turbine casing which houses the compressor section (2), the combustor section (3), and the turbine section (4) therein; a stator cooling air system (5) for leading compressed air extracted from midstream of the compressor section (2) into stator vanes which constitute the turbine section (4); and an air bleeding system (6) for extracting compressed air from the exit of the compressor section (2) to the outside of the gas turbine casing, wherein midstream of the stator cooling air system (5) and midstream of the air bleeding system (6) are connected via a connecting path (12), and at midstream of this connecting path (12), there is a flow rate control part (13) connected.

Abstract: A turbine engine particularly suited for VTOL aircraft is disclosed. According to various embodiments, the core of the turbine engine includes two spools—a low pressure (LP) spool and a high pressure (HP) spool—where the LP spool is independently mounted remote to the HP spool. The engine may be modulated for operation by a modulation diverter valve assembly and through the fuel flow to the engine. The power output from the engine can be modulated from high levels to low levels and vice versa through control of the air flow through the engine using the modulation diverter valve assembly. In lift mode operation both the LP and HP spools may be operational, while during the forward flight cruise mode of operation the HP spool is operational and the LP spool may or may not be operational depending upon the power required for the flight condition. For HP spool only operation, the LP spool may be shut down using the modulation diverter valve assembly and an inlet flow diverter valve assembly.

Abstract: In a combustor section, wherein a forward sleeve is disposed to encircle a leading end of an impingement sleeve comprised of first and second impingement sleeve parts abutted along a longitudinal junction thereof, a retainer member disposed to overlie the longitudinal junction. The retainer member is welded to at least one of said forward sleeve and the impingement sleeve. The retainer member has first and second axial end edges disposed transverse to the longitudinal junction, and at least one of the axial end edges has a cutout defined therein and disposed to overlie the longitudinal junction.

Abstract: Embodiments of the invention provide a dehumidifier and a vent drain assembly to reduce moisture in an electrical enclosure. The dehumidifier can include a thermoelectric module, a drain pan, and a fitting to release the collected moisture from the drain pan. The vent drain assembly can receive the collected moisture from the drain pan and the fitting. The vent drain assembly can include a valve body, a float, and a cap.

Abstract: A system, configured to be disposed in a information technology equipment rack for providing ice thermal storage, includes a tank configured to hold water, a heat exchanger disposed in water in the tank and configured to convey a two-phase liquid and vapor refrigerant and to transfer heat between the water and the refrigerant, a first valve connected to a liquid and a vapor refrigerant line and configured to selectively connect the liquid refrigerant line to a first port and the vapor refrigerant line to a second port in a first mode and to connect the liquid refrigerant line to the second port and the vapor refrigerant line to the first port in a second mode, a thermostatic expansion valve connected to an inlet of the heat exchanger, and a liquid/vapor pump connected to an outlet of the heat exchanger and to the second port of the first valve.

Abstract: A cooling system employs a single-acting positive displacement bellows pump to transfer a cryogenic liquid such as liquid nitrogen from a storage dewar to a heat exchanger coupled to a measurement chamber of an instrument, wherein cooling takes place by vaporizing the liquid. Preferably, the capacity of the pump is greater than the maximum cooling requirement of the instrument, wherein both vapor resulting from vaporizing of the cryogenic liquid circulated through the heat exchanger and liquid that does not vaporize when circulated through the heat exchanger are returned to the storage dewar, wherein the vapor is subsequently vented from the dewar. Preferably, with the aid of a weir in a return line, the level of liquid in the heat exchanger is maintained full and constant, and the cooling demands are automatically met without the need for other control of the flow rate or level of the liquid.

Abstract: The invention relates to a device for use in an LNG re-gasification system comprising a suction drum wherein said suction drum is sectionised by one or more baffles wherein said baffles are perforated. The invention further relates to a system and a process for use in re-gasification of LNG.

Abstract: A refrigeration appliance, in particular at least one of a refrigerator, freezer and an air conditioning unit, includes a cooling chamber; a linear compressor having a piston housing; a compressor piston disposed within the piston housing and configured for reciprocatory motion along an axis within the piston housing; and buffer means for storing kinetic energy associated with the motion of the compressor piston, wherein the buffer means is configured to store the kinetic energy of the compressor piston in an interim manner by compression of a gaseous fluid during reciprocatory motion of the compressor piston.