Abstract: An electric air-pump apparatus for motor vehicles has a mounting plate to which a housing of an electric motor and a pumping device are attached. A sound absorber is, formed by the mounting plate and a sound-absorber cap attached thereto, with the sound-absorber cap surrounding the pumping device. The sound-absorber cap is positioned on a first side of the mounting plate opposite from a second side of the mounting plate at which the electric motor is to be attached.

Abstract: In a combustion apparatus (10), in particular for driving gas turbines, in which combustion apparatus (10) a gaseous fuel in a burner (11) is sprayed through a plurality of separate fuel-injection devices (15, 16) into a gas flow containing combustion air, and the resulting mixture flows into a combustion chamber (12) for combustion and burns there, the acoustic impedance or stiffness of the fuel-injection devices (15, 16) is selected to be different in order to avoid thermoacoustic combustion instabilities.

Abstract: A body supporting apparatus is provided for motored compressors. The body supporting apparatus includes two coil springs that connect a seat spring of a stator to a seat spring of a lower casing holding the stator thereon, The two coil springs thus stably support the stator on the lower casing. A cylindrical spring guider is set between the two coil springs with an annular support ring formed around the central portion of the internal surface of the guide and supporting the two coil springs on opposite surfaces thereof within the guider. Two coil seat chambers are formed in the cylindrical guider at positions above and under the support ring and communicate with each other through a central opening of the support ring. The two coil springs are movably received within the two coil seas chambers such that the elastic compressive and tensile movement of the two coil springs are axially and stably guided within the associated chambers of the guider without being undesirably moved in a transverse direction.

Abstract: A method and system for dispensing a precise amount of a fluid utilizing a rolling membrane pumping system is disclosed. In the preferred embodiment, the method comprises calculating an amount by which to change a dispense based at least in part on a predicted membrane flex if a particular dispense is other than a first dispense, wherein said predicted membrane flex is based at least in part on a maximum pump chamber pressure during the first dispense; calculating an amount by which to change a dispense based at least in part on a shape of the membrane if a particular dispense is a first dispense; moving a piston in the pumping system based at least in part on the calculated amount; opening an output valve of the pumping system; monitoring the pump chamber pressure to detect a sudden decrease in said pump chamber pressure to signal a mechanical failure in the pumping system; and determining a maximum pressure in the pump chamber during the movement of the piston.

Abstract: An oil free screw compressor includes a compressor main body directly connected to a high speed motor via a drive side gear and a driven side gear having a uniform speed ratio. A bearing in a side of the high speed motor employs one having the same size as that of a bearing in a side of the compressor main body. The same material as a viscous seal provided at both end portions of a male rotor and a female rotor is used for a viscous seal provided at both end portions of a motor shaft. The high speed motor is driven by a high frequency type inverter. The electric motor side and the compressor main body side are made in a rotational shaft structure which is dummy symmetrical about a uniform gear portion.

Abstract: A suction chamber for use in a pumping system has a motor and a pump. The suction chamber is positioned between the motor and the pump in the pumping system and has a seal assembly. The seal assembly seals the shaft to prevent fluid from leaking through a motor end of the suction chamber. The seal assembly may be removed and replaced through the pump, or wet end of the suction chamber so that any parts, including thrust bearing chamber and/or the motor positioned on the motor end of the suction chamber are not moved during the removal and replacement of the sealing assembly. This permits removal and replacement of the sealing assembly without necessitating the need for realigning the motor, thrust bearing chamber and other parts on the motor side of the suction chamber which alleviates the risk of vibration that might occur due to the removal and then improper realignment of the motor, bearings and/or other equipment on the motor side of the suction chamber.

Abstract: A pump is disclosed, including a motor and a pump housing, for pumping mixed gas and liquid. The pump includes two intermeshed screw members for providing progressive cavities for transporting mixed fluids, within a pumping cavity, from a suction passage to a discharge reservoir of the pump housing. It further uses pumped product to provide cooling and lubrication to the motor and to bearings and timing gears of the screw members. By using pumped product for lubrication and cooling, the need for seals is eliminated, thereby reducing the need for maintenance. This makes the pump package advantageous for subsea deployment for use in pumping nearly depleted wells which may be manifolded together to provide adequate product flow.

Abstract: An apparatus includes a tank configured to contain air at an elevated pressure, an air compressor which is operative to supply compressed air for storage in the tank, and a base structure which supports the compressor on the tank. A mounting boss projects from the compressor into an opening in the base structure. A vibration damping structure is interposed between the mounting boss and the base structure within the opening.

Abstract: The casing comprises a combustion chamber and a nozzle, consisting of a subsonic and a supersonic sections with an external structural envelope and a fire wall having a ribbed external surface. The regenerative cooling passage is formed between the envelope and the fire wall. The fire wall is made from copper or a copper alloy, and the external structural envelope is made from steel or a nickel alloy. The fire wall has a metal coating stratified in the region of the nozzle throat over a length of not less than 0.3 diameter of the nozzle throat in the longitudinal direction. The first layer of the coating is nickel 50 &mgr;m to 1000 &mgr;m thick, and the second layer is chromium 10 &mgr;m to 500 &mgr;m thick.

Abstract: A fluid pump for pumping a volume of fluid under pressure from a fluid source to a fluid dispenser includes an electric motor. A pump drive assembly is operably coupled to the motor for reducing an output of the motor. A pump assembly is operably coupled to the pump drive assembly and is fluidly communicable with the source of fluid, the pump assembly being actuated by the pump drive assembly, the actuation causing the pump assembly to pump the fluid. A single main housing, the main housing in part the pump drive assembly and having a pump housing defined therein, the pump housing being integral, unitary therewith for housing the pump assembly. A method of making a fluid pump for pumping a volume of fluid under pressure from a fluid source to a fluid dispenser.

Abstract: A dual fuel nozzle is provided with two different size injection holes. The first injection holes have larger diameters and are used only for injecting gaseous fuel into a combustion chamber. On the other hand, the second injection nozzles have smaller diameters and are used for injecting either gaseous fuel or liquid fuel as required. When gaseous fuel is used, if the fuel injection amount is large or medium, both of the first and the second injection holes or first injection holes only are used for injecting gaseous fuel depending upon the required fuel injection amount. When the fuel injection amount is low, only the second injection hole is used for injecting gaseous fuel. Therefore, the pressure drop across the fuel nozzle can be kept at sufficiently high level even when the fuel injection amount is low, and thereby combustion vibration is suppressed. Further, when liquid fuel is used, a premixed fuel and steam mixture is injected from the second injection holes.

Abstract: A diaphragm pump comprising a first diaphragm operated with a driving mechanism such as a crank mechanism, a second diaphragm disposed so as to form an air chamber between the first diaphragm and the second diaphragm, and a pump chamber formed by the second diaphragm and a casing or the like, wherein the a pressure in the air chamber is changed by operating the first diaphragm with the driving mechanism and the second diaphragm is deformed by a change of the pressure in the air chamber to perform a pump function.

Abstract: A variable capacity type compressor has a swash plate which can incline with respect to the drive shaft. An angle decreasing spring urges the swash plate to decrease the inclination angle and a return spring urges the swash plate to increase the inclination angle from the minimum inclination angle beyond the limit angle. The minimum inclination angle is smaller than a limit angle at which the swash plate can be assuredly returned in the direction to increase the inclination angle by a reaction force of the discharge pressure, and the angle decreasing spring balances with the return spring at an angle greater than the limit angle. A minimum spring load (F0) of the return spring is greater than 20N. A maximum spring load (F100) of the angle decreasing spring is F100(N)=(180±30)−4×(VD−120).

Abstract: In a variable piston pump/motor, input/output shafts are pivotably supported by a housing via a shaft support cylinder formed with a spherical outer surface. The housing is disposed so that it can tilt in one direction, pivoting around hydraulic intake/discharge tubes fixed at a position along lines connecting spherical heads of pistons.

Abstract: A pump 12 is (or pumps are) located in a blind foundation pile 14 that has been driven into the sea floor. The top of the pile 14 is provided with a fitting that includes an inlet 18, a hanger 24 for the pump 12, and an outlet 20. water is delivered from a filtering and treatment apparatus into the pile 14 through the inlet 18. The pump 12 delivers the water under pressure through the outlet 20 into piping that directs the water to the water injection well.

Abstract: The present invention relates to a drive mechanism for a pump (10) implemented by means of a drive motor (20), the rotational speed and torque of which are influenced by a frequency converter (30). The frequency converter (30) is arranged on a heat dissipator (40) confining a flow of the pressure liquid guided to the pump (10). It is advantageous to also arrange the drive motor (20) inside the said heat dissipator (40), for this makes it possible to perform intense forced air cooling of a pump-drive motor system without the necessity of an additional cooling liquid. The drive motor (20) preferably has a central arrangement inside a tubular heat dissipator and is exposed to the pressure liquid over its entire circumference. Baffles or offset connecting sleeves allow for uniform flow through the entire heat dissipator (40).

Abstract: A reciprocating hermetic compressor, of the type including a rotor with permanent magnets and having its tubular vertical shaft (5) provided radially externally to the internal surface thereof with at least one axial channel (10) of oil conduction, having a lower end (11) immersed in the lubricant oil being pumped from a lubricant oil sump (2) defined at the bottom of the hermetic shell of the compressor, and an upper end (12) opened to a median radial duct (5a), which conducts lubricant oil to the parts of the compressor spaced away from the lubricant oil sump (2).

Abstract: A fuel injection pump having a cam drive and an injection adjuster piston, acting on the cam drive and serving the purpose of an injection onset adjustment. The injection adjuster piston on a face end encloses at least one pressure chamber that via a control valve is either made to communicate with a pressure source or a relief line or can be closed entirely. The control valve is actuated by an a proportional electromagnet. As a result, only a little adjusting medium is required, to obtain a high efficiency of the injection onset adjustment, and advantageously the injection adjuster piston is stressed only axially, and frictional forces on the circumference of the injection adjuster piston are thus avoided.

Abstract: A drive unit for hydraulic consumers for individual structural component parts of a machine for producing shaped articles from molding materials, including a motor, a pump driven by the motor, and a carrying part configured to connect at least one of the pump and the motor to the machine. The carrying part has a pipe-shaped area which is closed at both ends by at least one of a bottom and a cover. At least the pump projects into the carrying part and is enclosed by the carrying part. The pump is attached to the carrying part on a side facing away from the motor. A portion of the carrying part is constructed as a connection block.

Abstract: A double-force type pressure cylinder structure includes a gas cylinder secured on a pressurizing cylinder base, and a top cap secured on the gas cylinder. The pressurizing cylinder base has a liquid inlet port forming a first check valve, a liquid outlet port forming a second check valve, and a pressurizing cylinder chamber for receiving a piston rod. The gas cylinder includes a piston, a spring biased between the piston and an end face of the pressurizing cylinder base so that the piston is pushed upward by the spring. The circuit of the compressed air is controlled by air holes in conjunction with the spring so that the piston and the piston rod are reciprocally moved quickly for compressing the hydraulic oil at a high speed, thereby forming a thrust with a high pressure.