Sampling tool for lubricating fluid analysis
AssigneePratt & Whitney Canada Corp.
InventorMaurice Jean
Life of this patent
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Abstract
A method and a sampling tool for collecting particles from lubrication fluid of an engine are disclosed. The particles collected may be used to conduct analysis to diagnose a condition of the engine. The tool can be detachably connectable to a lubrication system of the engine. The tool comprises an inlet for receiving lubrication fluid from the lubrication system of the engine, a filter and a pump configured to induce a flow of the lubrication fluid through the filter.
Claims19
An oil sampling assembly for an aircraft engine, the oil sampling assembly comprising:
- a tank of the aircraft engine, the tank containing lubrication fluid of the engine, the tank including a port and a self-closing valve configurable between a closed configuration where a flow of lubrication fluid through the port is prevented and an open configuration where the flow of lubrication fluid through the port is permitted;
- and
- an oil sampling tool releasably engaged with the self-closing valve to cause opening of the self-closing valve, the sampling tool having:
- an inlet in fluid communication with the port for receiving the flow of lubrication fluid from the tank via the port;
- a filter in fluid communication with the inlet;
- a pump configured to induce the flow of the lubrication fluid through the filter;
- and
- a housing, the pump being housed by the housing, a portion of the housing being received in a receptacle formed in the tank.
An assembly comprising:
- an engine having a tank containing lubrication fluid of the engine, the tank including a supply port for supplying the lubrication fluid to a lubrication load of the engine, and a sampling port;
- and
- a sampling tool configured to collect particles from the lubrication fluid contained in the tank, the sampling tool including:
- an inlet in fluid communication with the sampling port for receiving the lubrication fluid from the tank;
- a filter in fluid communication with the inlet;
- a pump configured to induce a flow of the lubrication fluid through the filter;
- and
- a housing, the pump being housed by the housing, a portion of the housing being received in a receptacle formed in the tank.
A method for collecting particles from lubrication fluid of an engine, the method comprising:
- when the engine is shut down, inducing a flow of lubrication fluid from a tank of the engine through a filter to collect particles from the lubrication fluid, the tank including a supply port for supplying the lubrication fluid from the tank to a lubrication load of the engine, the tank including a sampling port, the flow being induced from the tank via the sampling port with a pump housed by a housing, a portion of the housing being received in a receptacle formed in the tank;
- and
- returning the lubrication fluid that has passed through the filter back to the tank.
Dependencies are inferred from the claim text.