Compound engine system with rotary engine
AssigneePratt & Whitney Canada Corp.
InventorAndre JULIEN
Life of this patent
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Abstract
A compound engine system includes a rotary engine with rotating chambers, a compressor section in successive communication with the rotating chambers, and a turbine section in successive communication with the rotating chambers. The turbine section has an output shaft. The output shaft and the engine shaft are drivingly engaged to each other and wherein the turbine section has a power output corresponding to from 20% to 35% of a total power output of the compound engine system. A method of compounding power in a compound engine system is also discussed.
Claims20
A compound engine system comprising:
- a rotary engine having a stator body defining an internal cavity and a rotor body engaged to an engine shaft, the rotor body sealingly engaged within the cavity to provide rotating chambers of variable volume;
- a compressor section in successive communication with the rotating chambers;
- and
- a turbine section in successive communication with the rotating chambers, the turbine section having an output shaft;
- wherein the output shaft and the engine shaft are drivingly engaged to each other and wherein the turbine section has a power output corresponding to from 20% to 35% of a total power output of the compound engine system.
A method of compounding power in a compound engine system, the method comprising:
- driving an engine shaft with a rotor of a rotary engine, the rotary engine having rotating chambers of variable volume;
- feeding compressed air from a compressor section to the rotating chambers;
- flowing exhaust from the rotating chambers to a turbine section to drive an output shaft of the turbine section;
- and
- compounding power of the engine shaft and of the output shaft, wherein the turbine section has a power output corresponding to from 20% to 35% of a total power output of the compound engine system.
Dependencies are inferred from the claim text.