Hybrid dual shaft gas turbine with accumulator
An automotive gas turbine engine includes a gasifier spool having variable iris control means for regulating air flow to a compressor supplying a primary burner that is operative to produce motive fluid for driving the gasifier turbine and to supply a thermally insulated pressure accumulator located upstream of a secondary burner that exhausts to a variably controlled power turbine nozzle of a power turbine and wherein control means are operative upon engine start to open the variable iris to the gasifier spool and to direct fuel to the primary burner until the gasifier turbine produces a desired pressure in the accumulator and wherein means are provided to sense the pressure within the accumulator and operative following attainment of the desired pressure to close the iris and reduce primary burner fuel flow to a predetermined minimum to maintain gasifier spool speed at between 85% to 95% of full design speed thereof; the control means further including a manual control to the variable power turbine nozzle to direct motive fluid across the power turbine to meet a desired power output therefrom and wherein fuel flow to the secondary burner is maintained to hold a desired power turbine inlet temperature schedule.
- Assignee:
- General Motors Corp
- Patent Number(s):
- US 4270344
- OSTI ID:
- 6247342
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320203 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
AIR FLOW
EFFICIENCY
ENERGY CONSUMPTION
ENGINES
EXHAUST GASES
FLUID FLOW
FLUIDS
FUEL CONSUMPTION
GAS FLOW
GAS TURBINE ENGINES
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
THERMAL EFFICIENCY
WASTES