A fluid pump inlet stabilizer dampener includes a deformable diaphragm separating an enclosure into a gas chamber and a liquid chamber; and a piston coupled to the deformable diaphragm and being movable with respect to a valve housing, wherein the piston is configured to be positioned in at least first, second, and third positions, wherein in the first position a first fluid flow path from a pressurized gas inlet port to the gas chamber is open, in the second position the first fluid flow path is closed, and in the third position the first fluid flow path is closed and a second fluid flow path that activates a venturi vacuum generator is open.

Presented herein are systems and methods for attenuating certain pulsations in a hydraulic system comprising a pump and a hydraulic actuator. In certain aspects, an accumulator comprising an internal volume that is divided into a working chamber and a contained chamber may be utilized to at least partially attenuate propagation of certain pulsations in the system. The working chamber may be fluidically coupled to the pump via a first flow path and fluidically coupled to a chamber of the actuator via a second flow path. The system may be designed such that a first inertance of the first flow path is greater than a second inertance of the second flow path. Additionally or alternatively, the system may be designed such that a resonance associated with the first inertance and a compliance of the accumulator may occur at a resonance frequency of less than 90 Hz.

A hydraulic accumulator, in particular in the form of a piston accumulator, has an accumulator housing (10) and a separating element (20) arranged in the housing. The separating element is in the form of a piston, which separates a fluid side (22) from a gas side (24). At least the gas side (24) can be inspected, at least in part, by at least one sight glass (34, 36) that is fixed in the accumulator housing (10).

A hydraulic accumulator, in particular in the form of a piston accumulator, has an accumulator housing (10) and a separating element (20) arranged in the housing. The separating element is in the form of a piston, which separates a fluid side (22) from a gas side (24). At least the gas side (24) can be inspected, at least in part, by at least one sight glass (34, 36) that is fixed in the accumulator housing (10).

A gas piston accumulator with a piston-cylinder unit, the hydraulic space of which can be connected to a hydraulic line. A pressure piston biased with a biasing force acts on the hydraulic space in order to pressurize the hydraulic fluid in the hydraulic line with an accumulator pressure. The biasing force is achieved by a gas pressure in a gas space which is separated from the hydraulic space via the pressure piston, at least one cylinder base of the gas piston accumulator being assigned to the pressure piston as a mechanical stop, and the pressure piston having an axially set back piston main body, on the gas side of which and/or on the hydraulic side of which there protrudes a stop structure which is of reduced area compared to the respective pressure piston side and which can be brought into pressure contact with the cylinder base.

A gas piston accumulator with a piston-cylinder unit, the hydraulic space of which can be connected to a hydraulic line. A pressure piston biased with a biasing force acts on the hydraulic space in order to pressurize the hydraulic fluid in the hydraulic line with an accumulator pressure. The biasing force is achieved by a gas pressure in a gas space which is separated from the hydraulic space via the pressure piston, at least one cylinder base of the gas piston accumulator being assigned to the pressure piston as a mechanical stop, and the pressure piston having an axially set back piston main body, on the gas side of which and/or on the hydraulic side of which there protrudes a stop structure which is of reduced area compared to the respective pressure piston side and which can be brought into pressure contact with the cylinder base.

Systems, methods, and apparatuses for operating a machine using energy stored in a compress gas are disclosed. Energy stored in the compressed gas may be used to pressurize a fluid, such as transmission fluid, and the pressurized fluid may be used to effectuate an operation of the machine, such as a transmission, and the operation of the machine may involve shifting of a transmission. The gas may be compressed with another fluid that is different from the fluid used to operate the machine, and the two fluid may be prevented from being mixed together.

A hydraulic powering system includes a hydraulic cylinder, an accumulator, and a manifold assembly. The hydraulic cylinder includes: (i) a hydraulic cylinder construction having a hydraulic cylinder wall and first and second hydraulic cylinder end caps forming an internal volume, a piston constructed to slide within the internal volume between the first and second hydraulic cylinder end caps and dividing the internal volume into an extend region and a retract region, and a piston rod extending from the piston and through the retract region and one of the first and second end caps to outside the hydraulic cylinder; (ii) an extend port in fluid connection with the extend region of the hydraulic cylinder; and (iii) a retract port in fluid communication with the retract region of the hydraulic cylinder. The accumulator includes: (i) an accumulator construction having an accumulator wall and first and second accumulator end caps forming an accumulator internal volume, an accumulator piston constructed to slide within the accumulator internal volume between the first and second accumulator end caps and dividing the accumulator internal volume into a hydraulic fluid region and a compressible gas region; and (ii) a hydraulic fluid port in fluid communication with the hydraulic fluid region of the accumulator. The manifold assembly includes a plurality of passageways therethrough providing fluid connection between: (i) a hydraulic fluid extend source and the hydraulic cylinder extend port and the accumulator hydraulic fluid port; and (ii) a hydraulic fluid retract source and the hydraulic cylinder retract port and the accumulator hydraulic fluid port. A method of operating a hydraulic powering system is described.

The present invention relates to an auxiliary system for starting or restarting the flow of gelled fluid contained in a pipeline (12) wherein the system comprises: at least one relief tank (13) fluidly connected (11) to the pipeline (12), wherein at least one relief tank (13) is suitable for receiving fluid from the pipeline (12); and at least one pressurising element upstream of at least one tank, suitable for pressurising the fluid in the pipeline (12), Additionally, the invention also provides an auxiliary method for starting or restarting the flow of gelled fluid in a pipeline (12) comprising at least one tank fluidly connected (11) to the pipeline (12) and at least one pressurising element upstream of at least one tank, wherein the method comprises the step of, at the start of the process, the pressurising element increasing the pressure in the pipeline (12) and filling at least one tank at least partially with fluid coming from the pipeline (12).

The present invention relates to an auxiliary system for starting or restarting the flow of gelled fluid contained in a pipeline (12) wherein the system comprises: at least one relief tank (13) fluidly connected (11) to the pipeline (12), wherein at least one relief tank (13) is suitable for receiving fluid from the pipeline (12); and at least one pressurising element upstream of at least one tank, suitable for pressurising the fluid in the pipeline (12), Additionally, the invention also provides an auxiliary method for starting or restarting the flow of gelled fluid in a pipeline (12) comprising at least one tank fluidly connected (11) to the pipeline (12) and at least one pressurising element upstream of at least one tank, wherein the method comprises the step of, at the start of the process, the pressurising element increasing the pressure in the pipeline (12) and filling at least one tank at least partially with fluid coming from the pipeline (12).