A lubrication control system for intermittent dosing of lubricant to one or more lubrication stations in a centrifugal separator includes a lubricant supply arrangement for supplying lubricant to at least one lubrication station. At least one pump is supplying intermittent pulsed volumes of lubricant from the lubricant supply arrangement to at least one lubricant pulse monitoring device including an elastic chamber to receive said pulsed volumes of lubricant from the pump, an outlet export valve at an outlet from the elastic chamber closing when a pulsed volume is delivered to the elastic chamber and opening to deliver the lubricant to the lubrication station, and a pressure transmitter measuring the pressure in said elastic chamber at least when a pulsed volume is received in the elastic chamber. A control computer regulating the pump controlling the pulses, closing the outlet export valve when a pulsed volume is delivered to the elastic chamber, controlling the measured pressure in the elastic chamber and opening the outlet export valve for deliverance of lubricant to the lubrication station. Also a corresponding method includes pumping intermittent pulsed volumes of lubricant to an elastic chamber, measuring the pressure in the elastic chamber when the elastic chamber has received a pulsed volume, controlling if the pressure corresponds to a required volume of lubricant, opening an outlet export valve at an outlet of said elastic chamber and emptying the elastic chamber and closing said outlet export valve to receive next pulsed volume of lubricant to the elastic chamber.

A lubricant delivery apparatus for installation on a device that includes a moving component that is actuated by an actuating fluid from an actuating fluid source is disclosed. The apparatus includes a lubricant supply reservoir and a pump operably coupled to the reservoir for receiving a pre-determined amount of lubricant from the reservoir and for discharging the pre-determined amount of lubricant from the apparatus. The apparatus has a non-actuated state, wherein the predetermined amount of lubricant is disposed within the pump and an actuated state wherein the predetermined amount of lubricant is discharged from the pump. While the apparatus is installed on the device, the pump is operably coupled to the actuating fluid source such that actuation of the moving component is with effect that the apparatus transitions from the non-actuated state to the actuated state such that the predetermined amount of lubricant is delivered to the moving component.

A lubricant delivery apparatus for installation on a device that includes a moving component that is actuated by an actuating fluid from an actuating fluid source is disclosed. The apparatus includes a lubricant supply reservoir and a pump operably coupled to the reservoir for receiving a pre-determined amount of lubricant from the reservoir and for discharging the pre-determined amount of lubricant from the apparatus. The apparatus has a non-actuated state, wherein the predetermined amount of lubricant is disposed within the pump and an actuated state wherein the predetermined amount of lubricant is discharged from the pump. While the apparatus is installed on the device, the pump is operably coupled to the actuating fluid source such that actuation of the moving component is with effect that the apparatus transitions from the non-actuated state to the actuated state such that the predetermined amount of lubricant is delivered to the moving component.

Lubrication system includes a drive fluid valve member and a detune valve member. The drive fluid valve member is movable from a first to a second position in response to drive fluid pressure to reduce the volume of a variable volume lubricant charge chamber. The detune valve member is movable from a first to a second position in response to lubricant pressure within the lubricant charge chamber, and is adapted to permit fluid communication between inlet and bypass fluid passages in its the first position and to disengage the fluid connection in its second position.

Lubrication system includes a drive fluid valve member and a detune valve member. The drive fluid valve member is movable from a first to a second position in response to drive fluid pressure to reduce the volume of a variable volume lubricant charge chamber. The detune valve member is movable from a first to a second position in response to lubricant pressure within the lubricant charge chamber, and is adapted to permit fluid communication between inlet and bypass fluid passages in its the first position and to disengage the fluid connection in its second position.

Method for detecting a fault condition in a vehicular hydraulic circuit during a drive cycle using an electric pump includes monitoring an actual pump torque and monitoring a desired pump torque. A current confidence factor is determined based on the actual pump torque and the desired pump torque. An average confidence factor is iteratively calculated based on the current confidence factor and previously determined confidence factors. The average confidence factor is compared to a fault condition threshold. An absence of the fault condition in the hydraulic circuit is detected when the average confidence factor is at least the fault condition threshold, and a presence of the fault condition in the hydraulic circuit is detected when the average confidence factor is less than the fault condition threshold.

A stuffing box lubrication system for oilfield pumping units automatically delivers to the stuffing box, at specified time intervals, a precise volume of lubricant. The stuffing box lubrication system has a grease reservoir, a pump, a controller, a high pressure hose and grease fitting, and a stuffing box which receives the grease. In situations where the stuffing box in use is not equipped with a ported inlet for receiving the grease, the present invention may further include a stuffing box adapter, having a ported inlet, where the stuffing box adapter couples with the stuffing box.

A bearing lubrication system includes a bearing housing, a lubricant reservoir communicating with the bearing housing, a seal assembly including a seal housing, an air supply line that injects pressurized air into the seal housing, a control valve arranged within the air supply line and adjustable to regulate flow of pressurized air into the seal housing, a blower that maintains a vacuum inside the lubricant reservoir, and a control system in communication with the control valve. When a pressure inside the bearing housing exceeds a predetermined pressure range, the control system adjusts the control valve to increase air pressure within the seal housing, and increases the blower speed to increase the vacuum pressure. When the pressure descends below the predetermined pressure range, the control system adjusts the control valve to decrease the air pressure, and decreases the blower speed to maintain or decrease the vacuum pressure.

A bearing lubrication system includes a bearing housing, a lubricant reservoir communicating with the bearing housing, a seal assembly including a seal housing, an air supply line that injects pressurized air into the seal housing, a control valve arranged within the air supply line and adjustable to regulate flow of pressurized air into the seal housing, a blower that maintains a vacuum inside the lubricant reservoir, and a control system in communication with the control valve. When a pressure inside the bearing housing exceeds a predetermined pressure range, the control system adjusts the control valve to increase air pressure within the seal housing, and increases the blower speed to increase the vacuum pressure. When the pressure descends below the predetermined pressure range, the control system adjusts the control valve to decrease the air pressure, and decreases the blower speed to maintain or decrease the vacuum pressure.

A bearing diagnostic device senses a failure in a bearing of a machine tool including a rotation shaft device. The bearing diagnostic device includes a rotation counting unit, a temperature measuring unit, a frictional torque calculating unit, a rolling speed calculating unit, a bearing characteristic calculating unit, a storage unit, and a determination unit. The frictional torque calculating unit is configured to calculate a frictional torque of the rotation shaft device. The rolling speed calculating unit is configured to calculate a rolling speed of the bearing from the count of rotations. The bearing characteristic calculating unit is configured to calculate a bearing characteristic from the frictional torque and the rolling speed. The determination unit is configured to compare the bearing characteristic calculated by the bearing characteristic calculating unit with a reference bearing characteristic stored in the storage unit to determine a presence of a failure.