An intelligent work vehicle filtration system includes a hydraulic subsystem, a controller architecture, and an electric drive subsystem containing a battery pack. A hydraulic subsystem includes, in turn, a fine filter device having a first filter efficiency, a coarse filter device having a second filter efficiency less than the first filter efficiency, a hydraulic circuit in which the fine filter device and the coarse filter device are positioned, and a hydraulic pump controllable to circulate hydraulic fluid about the hydraulic circuit. During operation of the intelligent work vehicle filtration system, the controller architecture selectively places the intelligent work vehicle filtration system in an externally-powered filter mode in which hydraulic flow is directed through the fine filter device, while bypassing the coarse filter device, when the electric drive subsystem is electrically coupled to an external power supply utilized to charge the battery pack.

A system may comprise a first sensor; a second sensor; and an electronic control module. The electronic control module may be configured to determine a flow of the fluid based on information regarding the pressure from the first sensor and information regarding the temperature from the second sensor; determine a portion of the flow of the fluid that is directed to a particle counter of the machine; receive, from the particle counter, information identifying a quantity of particles in the portion of the flow of the fluid; determine a quality of the fluid based on the quantity of particles; determine whether the flow of the fluid exceeds a flow threshold or whether the quality of the fluid is less than a quality threshold; and take a remedial action when the flow of the fluid exceeds the flow threshold or the quality of the fluid is less than the quality threshold.

Aspects and techniques of the present disclosure relate to a bleed valve system for bleeding fluid of a first, lower, specific gravity from a fluid of a second, higher, specific gravity, in a fluid system. The techniques can be used to provide a bleed valve system, for a pressurized fluid system, that is not sensitive to rotational orientation around a mounting axis.

A method of flushing a hydraulic system including a fluid circuit and an in-service fluid flowing therein includes fluidly coupling a kidney loop to the fluid circuit such that at least a portion of the in-service fluid may flow therethrough, the kidney loop including a depth media filter and a micro-glass filter arranged in a parallel flow pattern and introducing a solvent cleaner into the in-service fluid at a concentration level between approximately 2.5% and approximately 6%, the solvent cleaner including at least one hydrocarbon group V fluid. The method further includes maintaining a temperature of the in-service fluid between approximately 100 degrees Fahrenheit and approximately 155 degrees Fahrenheit and controlling the flow of the in-service fluid at a flow rate between approximately 3 gallons per minute and approximately 6.8 gallons per minute.

A method of flushing a hydraulic system including a fluid circuit and an in-service fluid flowing therein includes fluidly coupling a kidney loop to the fluid circuit such that at least a portion of the in-service fluid may flow therethrough, the kidney loop including a depth media filter and a micro-glass filter arranged in a parallel flow pattern and introducing a solvent cleaner into the in-service fluid at a concentration level between approximately 2.5% and approximately 6%, the solvent cleaner including at least one hydrocarbon group V fluid. The method further includes maintaining a temperature of the in-service fluid between approximately 100 degrees Fahrenheit and approximately 155 degrees Fahrenheit and controlling the flow of the in-service fluid at a flow rate between approximately 3 gallons per minute and approximately 6.8 gallons per minute.

The disclosure relates to a hydraulic accumulator, in particular in the form of a piston-type accumulator, having a separating element which is arranged in an accumulator housing and fluid-tightly separates two fluid chambers, in particular a closed accumulator chamber comprising a working gas and a liquid chamber comprising an operating liquid such as hydraulic oil, from one another, wherein a fluid port is fluidically connected to one of the fluid chambers. The hydraulic accumulator is characterised in that the fluid port has a magnetic-field-generating device which is received in a fixed position in the fluid port and separates magnetizable particles out of the fluid passing through the fluid port, to purify said fluid.

An apparatus for controlling hydraulically actuatable components of a blowout preventer stack assembly and a system for same. The apparatus comprises a blowout preventer stack including hydraulically actuatable components and a lower marine riser package coupled to the blowout preventer stack and including additional hydraulic components. The lower marine riser package includes a solenoid valve configured to control at least some of the components. The solenoid valve receives hydraulic fluid from a dedicated accumulator or accumulator bank configured to supply hydraulic fluid exclusively for use with the solenoid valve. A closed-loop hydraulic circuit is formed between the accumulator or accumulator bank and the solenoid valve.

The disclosure relates to a hydraulic accumulator, in particular in the form of a piston-type accumulator, having a separating element which is arranged in an accumulator housing and separates two fluid chambers from one another in a fluid-tight manner, in particular a closed accumulator chamber comprising a working gas from a liquid chamber comprising an operating liquid such as hydraulic oil, wherein a fluid connector is fluidically connected to one of the fluid chambers, wherein outside the accumulator housing and fixed thereto is an attachment part with a magnetic field generating device which acts on a fluid connection between the fluid connector of the accumulator housing and a fluid connector of the attachment part in such a way that magnetisable particles can be separated in a cleaning manner from the fluid passing through the fluid connection.

The invention relates to a hydraulic accumulator, in particular in the form of a piston accumulator, comprising a separation element (10), which is arranged in an accumulator housing (14) and separates two fluid chambers (16, 18) in a fluid-tight manner, in particular a closed-off storage chamber (20) containing a working gas, from a liquid chamber (22) containing an operating liquid, such as hydraulic oil, a fluid connection (24) being connected in a fluid-conducting manner to one of the fluid chambers (18), characterised in that a magnetic-field-generating device (42) is received in a part of the accumulator housing (14) which comprises the fluid connection (24), in such a way that magnetisable particles can be separated, in a cleaning manner, from the fluid located between the part of the storage housing (14) and the separation element (10) and deposited in the direction of the magnetic-field-generating device (42), on the latter.

A method for monitoring a hydraulic fluid includes moving a piston to a defined position within a hydraulic cylinder and emitting, by a radar sensing unit, a radar signal through the hydraulic fluid in the hydraulic cylinder. The method also includes collecting, at the radar sensing unit, a reflected signal corresponding to the emitted radar signal. The method also includes comparing the reflected signal to a previously collected signal, wherein the previously collected signal was collected by the radar sensing unit while the piston was previously located at the defined position within the hydraulic cylinder. The method also includes identifying the presence of one or more contaminants in the hydraulic fluid based on the comparison.