Oil system for turbine engine and related method
AssigneePratt & Whitney Canada Corp.
InventorsDavid Menheere, Andrew Marshall
Life of this patent
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Abstract
An oil system of a turbine engine and a method for driving an oil pump of such oil system are disclosed. In various embodiments, the oil system comprises an oil pump for fluid communication with one or more lubrication loads of the turbine engine, a first source of motive power and a coupling device. The first source of motive power is drivingly engaged to the oil pump for driving the oil pump during a first mode of operation. The coupling device is configured to drivingly disengage a second source of motive power from the oil pump during the first mode of operation and drivingly engage the second source of motive power with the oil pump to drive the oil pump during a second mode of operation.
Claims20
A turboprop gas turbine engine comprising:
- a shaft configured to be driven by a turbine;
- a gear train system configured to transfer power from the shaft to a propeller coupled to the turbine engine;
- and
- an oil system comprising:
- an oil pump in fluid communication with one or more lubrication loads of the turbine engine;
- a first electric motor drivingly engaged to the oil pump for driving the oil pump during a first mode of operation;
- and
- a coupling device configured to:
- drivingly disengage the gear train system from the oil pump during the first mode of operation;
- and
- drivingly engage the gear train system to the oil pump to drive the oil pump with the gear train system during a second mode of operation.
An oil system of a turbine engine, the oil system comprising:
- an oil pump for fluid communication with one or more lubrication loads of the turbine engine;
- a first source of motive power drivingly engaged to the oil pump for driving the oil pump during a first mode of operation;
- and
- a coupling device configured to:
- drivingly disengage a second source of motive power from the oil pump during the first mode of operation;
- and
- drivingly engage the second source of motive power to the oil pump to drive the oil pump with the second source of motive power during a second mode of operation.
A method for driving an oil pump in fluid communication with one or more lubrication loads of a gas turbine engine, the method comprising:
- driving the oil pump with a first source of motive power during a first mode of operation where the oil pump is drivingly disengaged from a second source of motive power;
- drivingly engaging the second source of motive power to the oil pump;
- and
- driving the oil pump with the second source of motive power during a second mode of operation.
Dependencies are inferred from the claim text.