Power plants – Combustion products used as motive fluid
Patent
1979-08-24
1981-11-24
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 395, 60 3951R, F02C 710
Patent
active
043016499
ABSTRACT:
An automotive single shaft gas turbine engine has a monorotor with a plurality of radial flow compressor blades thereon discharging compressed air to a recuperator for transferring heat from engine exhaust to the inlet combustion air to a combustor which produces motive fluid directed across a plurality of radial inflow turbine vanes on the monorotor and wherein the automotive gas turbine engine is further associated with an exhaust flow system including the regenerator, a series connected intercooler and a secondary compressor to produce a subatmospheric pressure source in the engine gas cycle to improve the thermal efficiency of the engine cycle and to further define a vacuum source for operating automotive accessories; and to provide a heat source at subatmospheric pressure for passenger compartment heater operation. The subatmospheric source is connected to the secondary compressor which is operative to compress turbine exhaust gas back to one atmosphere of pressure for discharge to the environment. The secondary compressor and the inlet compressor establishing a pressure build-up and pressure depression in the system which in one embodiment is across a series arranged, two-stage radial and axial turbine to produce an overall turbine pressure ratio for increasing the temperature drop across the turbine thereby to decrease work load of the downstream heat exchanger components between the outlet of the turbine stages and the secondary compressor.
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Casaregola Louis J.
Evans J. C.
General Motors Corporation
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