An insertion amount grasping device includes: a first jig fixed to a fixation target in a state where the first jig is positioned against the fixation target, the first jig having a guide through-hole extending toward an application portion in a state where the first jig is fixed to the fixation target; an insertion portion inserted into the guide through-hole such that the insertion portion is introduced toward the application portion in a state where an operator grips the insertion portion; and a protruding portion as a protruding portion provided in the insertion portion, the protruding portion inserted into the guide through-hole and cause friction between the protruding portion and the guide through-hole when a predetermined positional relationship is established between a distal end part of the insertion portion and the application portion along with an introduction operation to introduce the insertion portion toward the application portion.

The invention relates to a lubrication device for a turbine engine, comprising an oil intake pipe (23) provided with a pump (24) for supplying oil and control means (25) located downstream from the supply pump (24), a supply pipe (26) intended for supplying oil to a member to be lubricated and a recirculation pipe (27), the control means (25) making it possible to direct all or part of the flow of oil from the intake pipe (23) towards the supply pipe (26) and/or towards the recirculation pipe (27), the pump (24) being driven by at least one rotary member of an accessory gearbox of the turbine engine.

A lubrication injector comprising a housing and a translating metering body axially moveable with respect to the housing and provided with a lubricant supply channel. The injector includes at least one translating intermediate piston radially interposed between the metering body and the housing and axially moveable with respect to the housing, the intermediate piston carrying the metering body. The intermediate piston is mounted slidable axially on the metering body. The intermediate piston and the metering body delimit at least partly a metering chamber for a lubricant in communication with the supply channel of the metering body.

A machine arrangement comprising a crankshaft which is supported by at least one roller bearing including bearing rings and roller elements between the bearing rings, wherein the roller bearing is connected with a device for delivering of a lubricant to the area of rolling contact between the bearing rings and the roller elements. To improve the supply of lubricant to the roller bearing and to supply the right amount of lubricant in dependence of the temperature of the roller bearing, the device for delivering of the lubricant comprises a lubricant reservoir and a flow path from the lubricant reservoir to the area of rolling contact, wherein a valve element is arranged in the flow path for controlling at least one of a flow of lubricant and a pressure of lubricant in dependence of the temperature of at least one of the roller bearing and the valve element.

Methods and systems for determining lubrication flow dispensed to lubrication points. Lubricant delivery is determined based upon the difference between volume measurements detected as the lubricant is delivered to the lubrication points, and volume measurements detected as the lubricant is vented after delivery. A flow sensor in the lubricant supply line measures lubricant delivered and lubricant vented and a controller determines the amount dispensed based upon the difference between the delivered and vented measurements.

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 metering device includes a cup-shaped body with a supply passage coupled to a valve element, a hollow tubular body with a free end facing the valve element, a piston slidingly sealed inside the cup-shaped body and along an external surface of the tubular body, an elastic element exerting a load on the piston towards the supply passage, delineating an accumulation chamber facing the valve element and a dispensing chamber in constant communication with the cavity of the tubular body, also in communication with a delivery passage, the valve element closing the free end of the tubular body, isolating the cavity from the accumulation chamber and allowing communication with the supply passage, or isolating the accumulation chamber from the supply passage and allowing communication with the cavity. A stop limits the piston stroke towards the elastic element to adjust the dispensing of lubricant.

A lubricant metering device includes a cup-shaped body with a supply passage coupled to a valve element, a hollow tubular body with a free end facing the valve element, a piston slidingly sealed inside the cup-shaped body and along an external surface of the tubular body, an elastic element exerting a load on the piston towards the supply passage, delineating an accumulation chamber facing the valve element and a dispensing chamber in constant communication with the cavity of the tubular body, also in communication with a delivery passage, the valve element closing the free end of the tubular body, isolating the cavity from the accumulation chamber and allowing communication with the supply passage, or isolating the accumulation chamber from the supply passage and allowing communication with the cavity. A stop limits the piston stroke towards the elastic element to adjust the dispensing of lubricant.

An assembly for an aircraft includes a first shaft, a second shaft and a metering device. The metering device includes a device sidewall, a device first end, a device second end, a device bore, a plurality of channels and a plurality of ports. The device sidewall circumscribes the first shaft at the device first end. The device sidewall is disposed in a second shaft bore of the second shaft at the device second end. The device bore extends axially along the axis through the metering device between the device first end and the device second end. The channels are arranged circumferentially about the axis. Each of the channels projects radially into the device sidewall from the device bore and axially into the device sidewall from the device second end. The ports are arranged circumferentially about the axis. Each of the ports projects radially through the device sidewall.

An assembly for an aircraft includes a first shaft, a second shaft and a metering device. The metering device includes a device sidewall, a device first end, a device second end, a device bore, a plurality of channels and a plurality of ports. The device sidewall circumscribes the first shaft at the device first end. The device sidewall is disposed in a second shaft bore of the second shaft at the device second end. The device bore extends axially along the axis through the metering device between the device first end and the device second end. The channels are arranged circumferentially about the axis. Each of the channels projects radially into the device sidewall from the device bore and axially into the device sidewall from the device second end. The ports are arranged circumferentially about the axis. Each of the ports projects radially through the device sidewall.