Compound cycle engine

摘要

A compound cycle engine having at least one rotary unit defining an internal combustion engine, a velocity turbine in proximity of each unit, and a turbocharger is discussed. The exhaust port of each rotary unit is in fluid communication with the flowpath of the velocity turbine upstream of its rotor. The rotors of the velocity turbine and of each rotary unit drive a common load. The outlet of the compressor of the turbocharger is in fluid communication with the inlet port of each rotary unit, and the inlet of the pressure turbine of the turbocharger is in fluid communication with the flowpath of the velocity turbine downstream of its rotor. A method of compounding at least one rotary engine is also discussed.

主权项

1. A method of compounding at least one rotary engine, the method comprising:
drivingly engaging a second turbine and a compressor in a turbocharger; forming a fluid communication between an outlet of the compressor and an inlet port of each rotary engine; forming a fluid communication between an exhaust port of each rotary engine and an inlet of a first turbine, including directing exhaust pulses from the rotary engine onto blades of a rotor of the first turbine; driving a rotation of the blades of the rotor of the first turbine using kinetic energy imparted by impingement of the exhaust pulses against the blades; forming a fluid communication between an outlet of the first turbine and an inlet of the second turbine of the turbocharger; and drivingly engaging each rotary engine and the first turbine to a common shaft; wherein the first turbine is configured as a velocity turbine and the second turbine is configured as a pressure turbine, the first turbine having a pressure ratio smaller than that of the second turbine.