Abstract:
Venting of gaseous fuel during operation and after shutdown of an internal combustion engine increases emissions. A vent handling apparatus for a gaseous fuel system of an internal combustion engine comprises an accumulator for storing gaseous fuel; a first valve selectively enabling fluid communication between the accumulator and one of a gaseous fuel communication passage and a gaseous fuel storage vessel, the gaseous fuel communication passage delivering gaseous fuel to the internal combustion engine for combustion; and an apparatus for selectively returning the gaseous fuel from the accumulator to the internal combustion engine for combustion.
Abstract:
A method for the combined pump water pressure-compressed air energy storage at a constant turbine water pressure, the energy to be stored is used to pump a liquid medium into a pressure vessel such that a rising level of medium compresses the gas contained in the pressure vessel through a connecting conduit and presses said gas into a compressed gas tank, the conduit being shut using a check valve such that the energy is stored in the compressed gas.
Abstract:
A device for transferring a hydraulic working pressure in a pressure fluid for pressure actuating hydraulic units of deep sea systems, in particular deepwater wells, includes a first pressure chamber (19) for the pressure fluid, a displaceable piston arrangement (9, 11, 13) for changing the volume of the pressure chamber (19), and at least one second pressure chamber (21) in a cylinder arrangement (1). The surrounding pressure of the deep sea can be applied to the second pressure chamber for a displacement of the piston arrangement (9, 11, 13) generating the working pressure in the first pressure chamber (19). A pressure accumulator (37) is associated with the cylinder arrangement (1). The displaceable separating element (41) of the pressure accumulator separates a chamber (45) connected to the seawater from an actuating chamber (43) containing an actuating fluid and connected to the second pressure chamber (21) to apply the deep sea pressure to the second pressure chamber by the actuating fluid.
Abstract:
Certain examples present an improved compressed-air energy storage system. The system can include multiple sequential stages, in which accumulators are charged with air, which influences a hydraulic fluid to influence a pump/motor, and vice versa.
Abstract:
Certain examples present an improved compressed-air energy storage system. The system can include multiple sequential stages, in which accumulators are charged with air, which influences a hydraulic fluid to influence a pump/motor, and vice versa.
Abstract:
The invention is a combination accumulator and reservoir which stores energy when the accumulator deforms from its original shape in response to the flow of a pressurized fluid from the reservoir. The stored energy is returned when the fluid flow is reversed and the accumulator discharges the fluid and returns to its original shape. At least one part of the novelty of the invention is that the accumulator and the fluid reservoir reside in the same housing such that the volume of each varies inversely. Accordingly, the invention is more compact and weighs less than conventional accumulators. Another feature of the invention is that fluid is located around the bladder accumulator to lubricate contact between the bladder and sides of the reservoir.
Abstract:
The invention relates to a dual piston accumulator which is provided, in particular, in a hydrostatic hybrid-drive system for vehicles to replace a high pressure hydro accumulator and a low pressure hydro accumulator, wherein, inside a single accumulator housing (2) which extends in the axial direction in a single piece over a high pressure part (4) and a low pressure part (6), an accumulator piston (8, 10) defines a high pressure-sided fluid chamber (16) and a low pressure-sided fluid chamber (18), both of which border an intermediate piece (12) separating the high pressure side (4) from the low pressure side (6) through which the common piston nod (14) extends for both accumulator pistons (8, 10). Said accumulator is characterised in that the wall width of the housing (2) corresponding to the high pressure pan (4) is greater than the opposite induced wall width which corresponds to the low pressure pan (6).
Abstract:
A volume accumulator (15), including a guide housing (33) and a separating element (34), wherein the separating element (34) is slidably mounted on an inner lateral face of the guide housing (33). At least one indentation (41) is located on the guide housing (33), with the indentation protruding into the guide housing (33), wherein in the direction of the separating element (34) the indentation (41) has an open end that serves as a stop for the separating element (34).A volume accumulator (15), including a guide housing (33) and a separating element (34), wherein the separating element (34) is slidably mounted on an inner lateral face of the guide housing (33). At least one indentation (41) is located on the guide housing (33), with the indentation protruding into the guide housing (33), wherein in the direction of the separating element (34) the indentation (41) has an open end that serves as a stop for the separating element (34).
Abstract:
The invention is a combination accumulator and reservoir which stores energy when the accumulator deforms from its original shape in response to the flow of a pressurized fluid from the reservoir. The stored energy is returned when the fluid flow is reversed and the accumulator discharges the fluid and returns to its original shape. At least one part of the novelty of the invention is that the accumulator and the fluid reservoir reside in the same housing such that the volume of each varies inversely. Accordingly, the invention is more compact and weighs less than conventional accumulators. Another feature of the invention is that fluid is located around the bladder accumulator to lubricate contact between the bladder and sides of the reservoir.
Abstract:
An accumulator assembly is includes a piston located within a pressure canister. The pressure canister has a piston stop therein. The piston stop is located radially outboard of a biasing member or spring located within the pressure canister between the pressure canister and the piston. A support bracket is disposed on an end of the pressure canister in alignment with the spring. The outboard piston stop and the support bracket reduce the stresses due to reaction forces when the accumulator assembly is fully charged. By reducing the stresses due to reaction forces, the accumulator assembly can be made from steel casting or plastic molding without sacrificing the charge capacity of the accumulator assembly.