A system for operating and/or lubricating a plurality of valves. The system includes at least first and second control units, each of which is associated with a respective valve. Each control unit includes a hydraulic pressure inlet, a hydraulic pressure outlet, a hydraulic pressure line connected between the hydraulic pressure inlet and the hydraulic pressure outlet, and a hydraulic port which is connectable to the valve. The hydraulic pressure inlet of the first control unit is connectable to a hydraulic pressure source and the hydraulic pressure outlet of the first control unit is connectable to the hydraulic pressure inlet of the second control unit. In operation, the control unit is operable to selectively communicate hydraulic pressure from the hydraulic pressure line to the hydraulic port.

A system for operating and/or lubricating a plurality of valves mounted on a number of christmas trees, each valve including a hydraulic actuator operated by hydraulic pressure from a hydraulic pressure source and a lubricant inlet connected to an interior portion of the valve. The system includes a plurality of control units, each of which is associated with a respective valve and each of which has at least one of a hydraulic pressure line which is connectable to the hydraulic pressure source and a lubricant line which is connectable to the lubricant source. Each control unit is operable to selectively connect the hydraulic pressure source to the hydraulic actuator to thereby operate the valve and/or to selectively connect the lubricant source to the lubricant inlet to thereby communicate lubricant into the interior portion of the valve.

An automatic lubricator for lubricating an object. The lubricator includes a housing with a coupling section configured to couple with a lubricant container containing a lubricant. The lubricant container includes a rotatable shaft with a piston to dispense the lubricant from an output of the lubricant container. An electric motor is configured to drive the rotatable shaft of the lubricant container during at least one lubrication action, such that at least a part of the lubricant is dispensable from the lubricant container during the at least one lubrication action. At least one sensor is arranged within the housing and configured to provide a sensor signal indicative of a distance between the at least one sensor and the piston of the lubricant container, and a control circuitry configured to determine, based on the sensor signal, at least one lubrication parameter indicative of the at least one lubrication action.

An example of an emergency lubrication system for an aircraft includes a lubricant tank configured to supply a lubricant to a gearbox of the aircraft, a tube coupled between the lubricant tank and the gearbox and comprising a check ball disposed within the tube, a first lubricant line coupled to the tube and a first inlet of the gearbox, and a second lubricant line coupled to the tube and a second inlet of the gearbox.

A lubricant recovery system for a heat exchange system, and a heat exchange system. The heat exchange system includes a compressor, a condenser, an expansion device and an evaporator connected in sequence to form a loop, and further includes a reservoir for storing lubricant and in communication with the compressor, and the lubricant recovery system includes: a first flow path disposed between a suction chamber of the compressor and the reservoir, and having a first pump and a first filter, wherein the first pump is configured to pump a part of the lubricant in the suction chamber to the reservoir, and the first filter is disposed upstream of the first pump for filtering the lubricant; and/or a second flow path disposed between the evaporator and the suction chamber, and having a second pump and a second filter.

A minimum quantity lubrication system for accurately measuring and controlling a volume and pressure of a lubricating fluid provided to a machining tool during minimum quantity lubrication machining operations. The minimum quantity lubrication system can further include measuring and controlling a volume and pressure of air provided during machining such that atomization of the lubricating fluid with the air can be controlled. Use of a continuous volumetric flow pump provides a continuous flow of lubricating fluid to the tool during machining operations.

A device for supplying lubricant to a vehicle system includes a lubricant pump for supplying fluid from a lubricant reservoir and a lubricant distributor having a plurality of individually drivable supply valves configured for injecting a lubricant into lubricating points of associated operating components. The device also includes a controlling device for operably controlling the supply valves to lubricate the operating components based upon a lubricant demand or lubricant consumption related to operational information of the operating components.

An arrangement forming a lubricant circuit includes at least one lubricant line, at least one line branching that branches the lubricant line into a first branch and a second branch. The arrangement further includes at least one lubricant reservoir integrated into the first branch, and at least one line junction where the first branch and the second branch merge. The first branch is lockable and releasable.

A system for operating and/or lubricating a plurality of valves mounted on a number of christmas trees, each valve including a hydraulic actuator operated by hydraulic pressure from a hydraulic pressure source and a lubricant inlet connected to an interior portion of the valve. The system includes a plurality of control units, each of which is associated with a respective valve and each of which has at least one of a hydraulic pressure line which is connectable to the hydraulic pressure source and a lubricant line which is connectable to the lubricant source. Each control unit is operable to selectively connect the hydraulic pressure source to the hydraulic actuator to thereby operate the valve and/or to selectively connect the lubricant source to the lubricant inlet to thereby communicate lubricant into the interior portion of the valve.

A vehicle cooling system comprises an oil circulation circuit in which a cooling oil is circulated by an electric oil pump to cool a predetermined cooling target with the cooling oil; an oil temperature sensor detecting an oil temperature that is a temperature of the cooling oil; and a control device including a cooling control portion outputting a rotation command for operating the electric oil pump so as to cool the cooling target. The control device includes a pump abnormality determination portion outputting the rotation command to the electric oil pump to determine a presence/absence of abnormality based on a rotation state of the electric oil pump when an operation stop time of the vehicle is longer than a predefined determination permission time and an oil temperature detection value detected by the oil temperature sensor is higher than a predefined determination permission temperature.