Abstract: The invention relates to a device for dispensing one or more jets of cryogenic fluid comprising a fluid supply pipe supplying one or more fluid-dispensing nozzles arranged downstream of said pipe, in which the fluid flow section of the fluid supply pipe has a first diameter. According to the invention, the device for dispensing one or more jets of cryogenic fluid also comprises at least one plenum chamber which is arranged between the fluid supply pipe and the fluid-dispensing nozzle(s) and which is fluidly connected to both the pipe and the nozzle(s). The fluid flow section of each plenum chamber has a second diameter greater than the first diameter of the fluid flow section of the fluid supply pipe.

Abstract: Electrohydraulic pilot control means (1) for a hydraulic device which can be a proportional directional valve, an adjusting pump or an adjusting motor, which pilot control means contains two proportionally acting pressure control valves (3) and is provided with a control block (2) which accommodates the hydraulic valve parts (4) in holes and to which the associated proportional magnets are flange-connected, wherein the proportional magnets have a common electrical plug connection (5) and wherein the two proportional magnets (3) are joined to form an assembly by being encapsulated with plastic, the said assembly being fastened to the control block (2) and, in this case, being precisely oriented relative to the valve components (4), which are accommodated in the control block, by means of positioning aids which act perpendicular to the movement direction of armatures.

Abstract: In a method for optimizing the pressure setting accuracy, a hydraulic pressure is built up according to a pressure requirement of a hydraulic pump, and overflow control is performed using an analog-controlling hydraulic valve and a known control characteristic curve of the analog-controlling hydraulic valve, which overflow control counteracts a pressure build-up produced by the hydraulic pump that exceeds the pressure requirement. In addition to the known control characteristic curve of the analog-controlling hydraulic valve, at least one additional valve characteristic is taken into account for the overflow control.

Abstract: In various exemplary embodiments described herein, a system and related method to provide airflow management system in a substrate production tool includes a housing to couple the substrate production tool to a fan filter unit to provide filtered air to the housing, a facility connection to couple the substrate production tool to a reduced pressure exhaust mechanism, a substrate transfer section coupled below the housing and in airflow communication with the facility connection, and a substrate process area coupled to the substrate transfer section by one or more substrate transfer slots. A chamber substantially containing the substrate transfer section and the substrate process area is coupled to the housing to receive the filtered air and to the facility connection to provide an exhaust for excess gas flow. The chamber maintains a low pressure in the substrate process area relative to the substrate transfer section.

Abstract: An air cannon has a pressure vessel, a discharge valve, and a discharge tube assembly. The discharge tube assembly comprises a fluid passageway and a blast guard valve. The discharge valve is capable of opening and closing and allows pressurized gas to be discharged from the pressure vessel into the fluid passageway of the discharge tube assembly only when open. The blast guard valve is capable of opening and closing and obstructs the fluid passageway of the discharge tube assembly when closed. The blast guard valve allows gas to pass through the fluid passageway when open. The discharge valve and the blast guard valve are operatively connected to each other in a manner such that the discharge valve can open only when the blast guard valve is open.

Abstract: Apparatus for a network of conduits distributing liquid that is coupled to a supply of liquid and to a network. At least one sensor is coupled in fluid communication with the network and derives a level of demand of liquid from the network. At least one valve is coupled in fluid communication with the supply of liquid and with the network to control the flow of liquid to the network. A control unit is coupled to the sensor and to the valve, to command operation of the valve, and in absence of demand of liquid, to maintain a reduced pressure of liquid in the network relative to the supply pressure. The apparatus has a reservoir that accumulates liquid and releases liquid in response to, respectively, a rise and a drop of pressure of liquid in the network, whereby reduction of pressure by release of liquid is avoided.

Abstract: A fluid transfer system for transferring fluid from a reservoir to a receiving device having a through flow device adapted to receive fluid from the reservoir and transfer fluid through the system or measure the amount of fluid being transferred from the reservoir to the receiving device, a controllable shut-off valve arranged upstream of the receiving device, and a controlling unit that controls at least the state of the shut-off valve. The present invention relates in particular to a fluid transfer system and methods of transferring fluid from a reservoir to a receiving device and controlling the state of the state of the shut-off valve so that the pressure of fluid being fed to the receiving device is above a first pre-selected pressure limit (Pmin) so that the delivered amount corresponds to a demand.

Abstract: A method for filling a reductant tank is disclosed. The method includes creating a lower air pressure within the reductant tank than a pressure of an external reductant reservoir using the first valve, the second valve, and the venturi. The method also includes determining a level of a reductant in the reductant tank. The method further includes engaging the tank fill coupling mechanism with the external reductant reservoir. The method includes supplying the reductant from the external reductant reservoir into the reductant tank based on a pressure difference between the air pressure within the reductant tank and the pressure of the external reductant reservoir. The method also includes shutting-off the supply of the reductant based, at least in part, on the level of the reductant in the reductant tank. The method further includes disengaging the tank fill coupling mechanism from the external reductant reservoir.

Abstract: A connector for fluids has a pipe through which the fluid flows. The pipe has a diameter, an inlet end, an outlet end, an expanded area relative to the diameter. The connector also has an excess flow cartridge disposed in the pipe, the excess flow cartridge having a housing for receipt within the diameter, the excess flow cartridge minimizing flow in the pipe if flow exceeds a desired limit, and the excess flow cartridge having a radial opening in a side thereof in register with the expanded area such that flow through the opening flows through the cartridge.

Abstract: A method for drain liquid collection and evacuation in a subsea compression system using a compressor, wherein an external drainage tank is arranged in direct flow communication with the compressor sump via a sump evacuation valve, the tank is set under compressor discharge pressure via a tank pressurizing line arranged to connect the tank to a compressor discharge flow upstream of a throttle valve, a tank evacuation line is arranged to connect the tank to the compressor discharge downstream of the throttle valve, drain liquid evacuation is accomplished through generation, by adjusting the throttle valve, of a flow restriction in the compressor discharge. The tank is set under compressor discharge pressure by opening of the pressure valve and the drain liquid flow is permitted into a reduced compressor discharge pressure downstream the throttle valve by opening an evacuation valve in the evacuation line.

Abstract: An exemplary semiconductor processing system may include a processing chamber and a first pressure regulating device coupled with the processing chamber. A second pressure regulating device may also be coupled with the processing chamber separate from the first pressure regulating device. A first pump may be fluidly coupled with the first pressure regulating device and fluidly isolated from the second pressure regulating device. A second fluid pump may be fluidly coupled with the second pressure regulating device.

Abstract: The invention relates to a method for realizing a vacuum in at least one vacuum chamber. The method comprises providing an arrangement comprising a plurality of vacuum chambers, wherein each vacuum chamber is connected to a shared vacuum system. The shared vacuum system comprises a plurality of turbo molecular pumps, at least one common fore pump, and a piping system comprising one or more pipes for connecting the at least one common fore pump to each of the plurality of turbo molecular pumps. Each turbo molecular pump is separately connected to a corresponding vacuum chamber. The piping system further comprises flow regulators for controlling a flow within the piping system. The method further comprises selecting at least one vacuum chamber for pump-down, and separately pumping down the at least one selected vacuum chamber by means of the shared vacuum system.

Abstract: A proportional motion control valve includes an electro-mechanical actuator that provides an infinitely controlled pressure setting in response to an electric signal applied to the electro-mechanical actuator. In another aspect, a proportional motion control valve includes a pilot-operated valve disposed intermediately with respect to a cage and a valve body to fluidly isolate an internal cavity of the valve body from a bore of the cage. The pilot-operated valve is subjected to a hydraulic opening force of pilot fluid that is present in the bore of the cage. A spring is disposed within the internal cavity of the valve body and arranged to subject the pilot-operated valve to a closing spring force.

Abstract: A processing method is provided in which an object to be processed is processed within a processing container connected to a gas supply system, an exhaust system and an opening degree variable valve by using a processing gas in a plurality of sequential processing steps. The processing method includes: an acquisition process for acquiring an opening degree of the opening degree variable valve corresponding to a target pressure value within the processing container under a predetermined processing condition for at least one of the plurality of sequential processing steps; and an execution process for executing the at least one of the plurality of sequential processing steps for which the opening degree has been acquired by the acquisition process with the opening degree.

Abstract: A method of controlling fluid pressure in a closed system including using a pressure regulating unit connected to the system, the unit including a first conduit fluidly connecting the closed system to an external system. A first regulating valve is interposed between the external system and one end of the conduit and a second regulating valve interposed between the closed system and the other end of the conduit. The method further includes: a) opening one of the first or second regulating valves; b) closing said one regulating valve; c) opening the other regulating valve; d) closing the other regulating valve; and e) repeating steps a) to d) in turn until the desired fluid pressure is achieved in the system.

Abstract: Method and apparatus for mitigating slug formation in a multiphase fluid stream flowing through a conduit. The method includes (a) determining the pressure in the conduit upstream of a slugging zone, (b) determining the pressure in the conduit downstream of the slugging zone, (c) determining the actual pressure difference across the slugging zone by subtracting the downstream pressure from step (b) from the upstream pressure from step (a), (d) determining the error between a target pressure difference and the actual pressure difference, (e) producing a signal having a first component which is proportional to the error and a second component which is proportional to the rate of change of the error over time, and (f) using the signal produced in step (e) to control the position of an adjustable choke valve located downstream of the slugging zone so as to stabilize variations arising in the actual pressure difference over time.

Abstract: A tank (10) including a container (15) and a flow line (20) for discharging excess fuel. Said flow line (20) is provided with a pipe (21) and an over-pressure valve (24) arranged inside the container (15). In addition, the tank (10) includes a leaktight bell (30) arranged inside said container, said bell (30) being over the over-pressure valve (24) and surrounding the over-pressure valve (24) at least in part so as to hold air captive in order to isolate the over-pressure valve (24) from the fuel content when said pressure is below said threshold.

Abstract: The present disclosure relates to a bidirectional valve design that provides for more rapid deflations/evacuation of fluid flow and in one example includes a valve body, a spindle piston movably coupled in a bore of the valve body and an electronically controllable motor that moves the spindle valve between a fluid evacuation position and a fluid fill position. In one example, the spindle piston includes piston structures on ends of a threaded rod. In another example, a mattress system is disclosed that employs the valve and a fluid source to provide quick evacuation of air from a patient support. In another example, the valve is coupled to an alternating pressure block valve which is then coupled to a patient support.

Abstract: A movable robotic structure including a frame or substrate, an outer skin connected to at least a portion of the frame and a vacuum source in fluid communication with the outer skin. The vacuum source, such as a vacuum pump, is activated to pull the outer skin into engagement with an outer surface of the frame. When pulled by the vacuum source, the skin may conform to the topography or texture of the frame, as well as become taut over at least a portion of the frame.

Abstract: The present disclosure is directed to a hydraulic vehicle power system. The auxiliary mobile power system may be configured to supply power to at least one auxiliary function and a primary hydraulic system for a vehicle. The auxiliary mobile power system may include a hydraulic pump configured to provide hydraulic pressure to the at least one auxiliary function and the vehicle's primary hydraulic system. The auxiliary mobile power system may also include a control valve connected to the hydraulic pump. The control valve may be configured to control the hydraulic pressure to the at least one auxiliary function and the primary hydraulic system for the vehicle.

Abstract: A dialysis machine method includes in an embodiment applying a pneumatic closing pressure to a first valve chamber and arranging a compliance chamber to flex and absorb energy from the pneumatic closing pressure so as to tend to prevent the pneumatic closing pressure from opening an existing closure of a second valve chamber.

Abstract: A device and a method for reducing the pressure of a fluid containing granules. The device comprises a free space devoid of moving rotor blades and a housing with an inlet and an outlet. The shape of the wall within the housing and of the free space therein applies a centripetal flow component to the fluid containing the granules flowing therethrough. The pressure of the fluid containing the granules is decreased after the flow has passed through the device. The device and method further and impart a rotational motion to the fluid containing the granules in the area of the outlet, which is generally located in the central area of the free space.

Abstract: A method is provided to detect the presence of hydraulic line pressure in a hydraulic control system in an electromechanical transmission. The method includes determining an estimated hydraulic line pressure of the hydraulic control system based upon an input flow and an output flow of hydraulic fluid. The input flow and output flow are regulated with a pressure control device, which is energizable on operator demand. A pressure detection device is fluidly connected to the pressure control device to detect the presence of hydraulic pressure. An override module is applied to the estimated hydraulic line pressure to determine a corrected hydraulic line pressure. The override module sets the corrected hydraulic line pressure to predetermined values based on the operating state indicated by the pressure detection device. The override module corrects for an over-estimation of hydraulic line pressure in operating conditions such as low environmental temperatures.

Abstract: A fluid system can selectively include an in-line storage tank. The fluid system includes a valve switch system connected to the storage tank. The valve switch system routes fluid from a supply to an intake interface of a consumer premises. The valve switch system is operable to route the fluid in one of multiple different ways. The multiple different ways can include: routing from the supply to the intake interface through the in-line storage tank when the supply provides a pressurized flow of fluid, routing from the supply to the intake interface bypassing the storage tank when the supply provides a pressurized flow of fluid, or routing from the storage tank to the intake interface when the supply provides no or low flow of fluid. When routing from the storage tank, the valve switch system can pressurize the storage tank.

Abstract: A system includes a pilot pump with an output that may be directed to a pilot circuit by way of a selector valve. The selector valve is shifted between a first position providing communication between the pump and the pilot circuit to a second position providing communication between the pilot pump and the hybrid circuit when pressure in the pilot circuit reaches a predetermined level. That pressure is used to hydraulically shift the selector valve to redirect flow from the pilot pump to the hybrid circuit. Both the pilot circuit and the hybrid circuit include accumulators for storing pressurized hydraulic fluid. The fluid stored in the pilot circuit is used for pilot functionality while the fluid stored in the hybrid circuit is used to power any one or more of a variety of power consuming components.

Abstract: A TPRD for a high pressure storage vessel including an integrated pressure sensor cooperative with an activation mechanism and a method of monitoring a TPRD for use in a fuel cell system. The TPRD comprises a release piston, moveable between an open and a closed position, which controls the flow of gas from a fuel storage vessel through a gas outlet port. The thermally activated activation mechanism comprises a gas-inlet chamber and a liquid-filled bulb having an air bubble. Upon activation, the release piston moves from the closed position to the open position. The integrated pressure sensor detects the pressure within the TPRD. A difference in pressure between that of the fluid within the fuel storage vessel and the pressure within the TPRD provides indicia of impaired movement of the release piston.

Abstract: A tire inflation system and a method of control. The tire inflation system includes the first gas supply and a second gas supply. The first gas supply is configured to provide a first compressed gas mixture. The second gas supply is configured to provide a second compressed gas mixture having a greater concentration of nitrogen than the first compressed gas mixture. The first or second compressed gas mixtures may be provided to inflate a vehicle tire.

Abstract: A system includes a fuel source for providing a fuel, a first expansion valve formed in a first fuel line connected to the fuel source, for expanding the fuel, and a heat transfer device for delivering a heat transfer medium to the first expansion valve such that the heat transfer medium is cooled by contacting the first expansion valve. Another system includes a fuel source for providing a fuel, a first expansion valve formed in a first fuel line connected to the fuel source, for expanding the fuel, a heat exchanger connected via the first fuel line to the expansion valve, the heat exchanger being cooled by the expanded fuel, and a fan for blowing air over the heat exchanger such that the air is cooled by contacting the heat exchanger. Another system includes pneumatic or hydraulic operated system devices.

Abstract: This disclosure relates to a system and method for generating a change in pressure proportional to fluid viscosity. In particular, the disclosure discusses a viscosity dependent pressure differential system. The system can comprise a first pilot stream, a second pilot stream, and a pressure sensing device that reads a differential pressure across a first junction on the first pilot stream and a second junction on the second pilot stream. The first junction is between a first section having a first predominant pressure loss characteristic, and a second section having a second predominant pressure loss characteristic. Similarly, the second junction can be between a third section having a third predominant pressure loss characteristic and a fourth section having a fourth pressure loss characteristic.

Abstract: The present disclosure relates to a device for the high-pressure treatment of products, particularly of packaged foodstuffs. The device comprises a high-pressure chamber and a discharge valve for discharging high-pressure medium out of the high-pressure chamber. The invention is characterized in that a controllable actuator is provided for adjusting the rate of the pressure decrease in the high-pressure chamber at least over a predetermined pressure range. The disclosure also relates to a method for the high-pressure treatment of products, wherein pressure decrease takes place in a first phase and in a second phase, and the mean pressure decrease rate in the first phase is higher than in the second phase.

Abstract: A damping valve arrangement is provided for controlling a pilot pressure that exerts influence on a control chamber of a damping device of a vibration damper through a control fluid, with an armature that is displaceable by the activity of an electrically energizable coil and provided in a housing, which armature includes a guide pin on which a first spring washer is provided and braces the guide pin. The first spring washer is designed for changing the area of a flow-through opening of the damping valve arrangement through which a control fluid is able to flow.

Abstract: A pressure regulator includes a regulator body, and a piston slidably disposed in the regulator body, wherein an end of the piston extends axially beyond an end of the regulator body and is exposed to an external pressure. A method of regulating pressure includes providing a pressure regulator having a piston slidably disposed in a regulator body, wherein an end of the piston extends beyond an end of the regulator body and is exposed to an external pressure, applying external pressure on the end of the piston, and outputting a regulated working fluid pressure from the pressure regulator.

Abstract: An enclosure for a dry-type transformer includes a bottom wall, a plurality of sidewalls coupled to and extending from the bottom wall, and a top wall coupled to the sidewalls so as to be spaced from the bottom wall. The top wall includes an opening therein. The bottom wall, sidewalls and top wall define an enclosed space for housing a dry-type transformer. Pressure relief structure is associated with the top wall and has at least one flap constructed and arranged in a closed position, to cover the opening. In the event an arc flash occurs in the enclosure creating gas pressure in the enclosure, the flap is constructed and arranged to move from the closed position to an opened position due to the gas pressure acting thereon, permitting the gas pressure to escape from the top of the enclosure through the opening.

Abstract: The invention aims at pressurising a volume (2) that needs to have a relative air pressure, in comparison with an ambient pressure, where the ambient air pressure can change rapidly and with large amplitude and where the access to pressurised air is limited. This is solved by a half open system comprising two parallel regulators (9) and (17) and two ejectors (15) and (19) working according to a split range control principle. When the relative air pressure difference is above a desired value of the second regulator (17), only the first regulator and the first ejector work. When the relative air pressure difference is below the desired value of the second regulator (17), both regulators (9) and (17) and ejectors (15) and (19) work. In this way the pressure inside the volume (2) can adapt rapidly to the changes in the ambient pressure, without leaking too much air during a static condition.

Abstract: A charging device for a shaft furnace comprises a main casing and at least one nozzle for introducing a clean gas into the casing. According to an important aspect of the invention, a controller is configured to adapt the supply (the flow rate) or pressure of clean gas in the main casing based on charging status information.

Abstract: Automated systems and methods for priming a fluid chamber of a fluid dispensing valve with fluid from a fluid material source that includes a vacuum source, a valve priming station, a vacuum switch, and a controller. The valve priming station has a boot, a vacuum chamber, and a vacuum channel in the boot. The vacuum channel connects with the vacuum source via the vacuum chamber. The boot sealingly engages a valve nozzle of the fluid dispensing valve so that the vacuum chamber connects the vacuum source with the fluid chamber. The vacuum switch couples with the vacuum channel via the vacuum chamber and has an opened and closed position based upon a vacuum level in the vacuum chamber. The controller is electrically connected with the vacuum source and vacuum switch and controls priming of the fluid dispensing valve based upon whether the vacuum switch is opened or closed.

Abstract: An extendible and collapsible pressure hose system can be created which comprises a collapsible pressure hose with a hose output connector mounted on one end and a fluid control system mounted on the other. In such a system, the collapsible pressure hose can, but need not comprise a coiled support wire, a convoluted hose body and/or an outer reinforcement cover. A fluid control system can comprise an input connector attached to hose, input connector housing, a main valve, and a pump. In such a fluid control system, the main valve can direct fluid within hose in three modes: 1) an open mode, where fluid pressure extends hose for use, 2) a retract mode, where the pump is used to pump fluid out of the hose, and 3) a closed mode, where no fluid can flow and in which the hose can be stowed.

Abstract: An apparatus and a method for removing condensate and unwanted gas from vapor/liquid systems while preventing steam loss are provided. The steam trap apparatus replaces the automatic valve type steam trap with an efficient, controllable, and programmable steam trap. In addition, the improved steam trap apparatus allows for real-time data collection during sterilization and other operations.

Abstract: A mass flow controller includes a thermal mass flow sensor in combination with a pressure sensor to provide a mass flow controller that is relatively insensitive to fluctuations in input pressure. The pressure sensor and thermal sensor respectively provide signals to an electronic controller indicating the measured inlet flow rate and the pressure within the dead volume. The electronic controller employs the measured pressure to compensate the measured inlet flow rate and to thereby produce a compensated measure of the outlet flow rate, which may be used to operate a mass flow controller control valve.

Abstract: Disclosed is a pneumatic pressure and vacuum device that allows a user to adjust the duration of either pressure or vacuum that is applied to a pneumatic adult toy. A solenoid valve is used that is controlled by a solenoid for opening and closing ports that apply pressure and/or vacuum to a pneumatic adult toy. A timer is utilized to independently control the on and off times of the solenoid valve, so that vibrational frequency, as well as the amplitude of pressure and vacuum can be adjusted.

Abstract: A pressure accumulator system, and a method of operating a pressure accumulator system. The method includes operatively connecting a tank neck to at least two pressure accumulator vessels having different admissible operating pressures, in which at least one of the pressure accumulator vessels has an admissible operating pressure lower than a maximum applicable pressure at the tank neck, simultaneously filling via the tank neck the at least two pressure accumulator vessels with a fluid medium, and preventing an inadmissible pressure rise in the pressure accumulator vessels with the lower admissible operating pressure during the simultaneous filling.

Abstract: Methods for combinatorially processing semiconductor substrates are provided. The methods may involve receiving a substrate into a combinatorial processing chamber and sealing a plurality of flow cells against a surface of the substrate. The plurality of flow cells is enclosed within the combinatorial processing chamber to define an enclosed external environment for the plurality of flow cells. A pressure differential is created between a reaction area of the plurality of flow cells of the combinatorial processing chamber and the external environment, wherein each flow cells of the plurality of flow cells defines a site isolating region of die substrate. The regions the substrate are then combinatorially processed.

Abstract: Gas supply pressure spikes are absorbed and leveled-out by a gas supply shock absorber comprising gas storage, which is charged during positive pressure spikes and utilized during negative pressure spikes. The gas supply shock absorber also comprises pressure sensing and regulating valves, which direct positive pressure spikes to the gas storage and draw gas from storage during negative pressure spikes. A backflow preventer limits shock absorption to co-located equipment, but gas supply shock absorbers operate in aggregate to create additional demand during positive pressure spikes and reduced demand during negative pressure spikes. If the gas storage has sufficient gas, a co-located data center utilizes such gas for increased electrical power generation during increased processing activity, which can be requested or generated. Conversely, if the gas storage has insufficient gas, and a negative pressure spike occurs, the data center throttles down or offloads processing.

Abstract: In a first aspect, a substrate carrier is provided that includes an enclosure adapted to be sealable and to house at least one substrate. The substrate carrier includes a first port leading into the enclosure and adapted to allow a flow of gas into the enclosure while the substrate carrier is closed. Numerous other aspects are provided.

Abstract: Apparatus and methods for generating a partial vacuum in a cavity are disclosed. In one method, a suction unit is disposed on a surface and includes a plurality of embedded suction generation devices that suction gas therethrough. The suction generating devices are powered-on to form a cavity defined by at least the surface and the suction unit and gas is evacuated from the cavity to generate the partial vacuum.

Abstract: A methods and system detecting water system leaks provides detecting of water leakage having very low flows. Very low flow leaks are detected by detecting drops in a building water system pressure when the water supply source is disabled. The water system is disabled by an electrically controllable valve, which may be turned off in response to a motion detector that detects that no human activity is present in the building. The rate of pressure drop is used to determine the magnitude of the leak, and multiple thresholds can be used to detect slow leaks versus more serious leaks. A humidity detector may also be incorporated in the system to detect abnormal humidity conditions and shut the electrically controllable valve in response. Appliance current consumption can be detected and used to override motion-sensor based shut-off of the valve, so that water-consuming appliances can continue to operate.

Abstract: The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.

Abstract: A method for refilling an emptied hydraulic coupler of a fuel injector comprises the steps of: connecting a pressure generator to a return line of the fuel injector; operating the pressure generator in order to generate a return pressure in the return line; operating the fuel injector. The method can also include the step of monitoring the pressure level in the return line.

Abstract: A method of fueling with compressed gas is described. In one embodiment, the method includes providing a supply of compressed gas; providing a storage tank with a fueling line, and a nozzle in the fueling line, the nozzle movable between at least a flow reduction position and a full fuel flow position; initiating fueling from the supply of compressed gas with the nozzle in the flow reduction position for a predetermined time or until a minimum pressure is obtained; when the predetermined time or the minimum pressure is obtained, moving the nozzle to the full fuel flow position; and fueling the storage tank from the supply of compressed gas with the nozzle in the full fuel flow position until fueling is completed. A vehicle incorporating the nozzle is also disclosed.

Abstract: Exchanger devices include a plurality of fixed exchange ducts and a rotating valve assembly for directing flow to and from the plurality of exchange ducts. Methods of exchanging pressure between fluid streams may include directing fluids through an exchange device and pressurizing a fluid in the plurality of exchange ducts of the exchanger device.