US3886730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governing device for a gas turbine system
Assignee: MTU Aero Engines AG
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Filing: 1972-12-21
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Granted: 1975-06-03
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Expires: 1992-12-21
Abstract
Abstract Governing device for a gas turbine system exemplified by a vehicular or aircraft engine having a first governor to vary the fuel flow and a second governor to additively or alternatively reduce the fuel flow apportioned by the first governor, where the sensor provided for detecting variations in the regulating variable of the second governor is subject to lag, characterized in that the variation in fuel flow is automatically convertible into a variation ( Delta T) of the regulating variable (T) of the second governor (R2), making it variable in time, and in that the latter variation ( Delta T) is automatically imposed on the deficiently sensed instantaneous value (Ti) of this regulating variable (T).
Inventors
- 👤 Christian Greune
- 👤 Friedrich Hackl
- 👤 Karl Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28; F02C9/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
235 words
In a gas turbine system including a combustion chamber receiving combustion air from a turbine driven compressor and a fuel metering device for metering the flow of fuel to said combustion chamber, a governing arrangement for controlling said fuel metering device comprising first governor means responsive to a first engine operating characteristic for generating a first control signal, a sensor having an inherent response delay for sensing a second engine operating characteristic, second governor means connected to said sensor for generating an adjusting signal, logic means responsive to the first control signal and the adjusting signal for providing an output fuel flow control signal for application to said fuel metering device, and control means responsive to variations in said output fuel flow control signal and a signal representing a third engine operating characteristic for automatically controlling said second governor means to compensate for the inherent response delay of said sensor, said control means including a differentiating circuit means for differentiating the output fuel flow control signal, signal level adjusting means responsive to said third engine operating characteristic and the output of said differentiating circuit means for generating a signal representing an additive value for the value insufficiently sensed by said sensor as a result of the response delay, and a first summing junction receiving the output of said sensor and the output of said signal level adjusting means for controlling said second governor or means.
Claim 2
Dependent Claim
235 words
In a gas turbine system including a combustion chamber receiving combustion air from a turbine driven compressor and a fuel metering device for metering the flow of fuel to said combustion chamber, a governing arrangement for controlling said fuel metering device comprising first governor means responsive to a first engine operating characteristic for generating a first control signal, a sensor having an inherent response delay for sensing a second engine operating characteristic, second governor means connected to said sensor for generating an adjusting signal, logic means responsive to the first control signal and the adjusting signal for providing an output fuel flow control signal for application to said fuel metering device, and control means responsive to variations in said output fuel flow control signal and a signal representing a third engine operating characteristic for automatically controlling said second governor means to compensate for the inherent response delay of said sensor, said control means including a differentiating circuit means for differentiating the output fuel flow control signal, signal level adjusting means responsive to said third engine operating characteristic and the output of said differentiating circuit means for generating a signal representing an additive value for the value insufficiently sensed by said sensor as a result of the response delay, and a first summing junction receiving the output of said sensor and the output of said signal level adjusting means for controlling said second governor or means.
Claim 3
Dependent Claim
235 words
In a gas turbine system including a combustion chamber receiving combustion air from a turbine driven compressor and a fuel metering device for metering the flow of fuel to said combustion chamber, a governing arrangement for controlling said fuel metering device comprising first governor means responsive to a first engine operating characteristic for generating a first control signal, a sensor having an inherent response delay for sensing a second engine operating characteristic, second governor means connected to said sensor for generating an adjusting signal, logic means responsive to the first control signal and the adjusting signal for providing an output fuel flow control signal for application to said fuel metering device, and control means responsive to variations in said output fuel flow control signal and a signal representing a third engine operating characteristic for automatically controlling said second governor means to compensate for the inherent response delay of said sensor, said control means including a differentiating circuit means for differentiating the output fuel flow control signal, signal level adjusting means responsive to said third engine operating characteristic and the output of said differentiating circuit means for generating a signal representing an additive value for the value insufficiently sensed by said sensor as a result of the response delay, and a first summing junction receiving the output of said sensor and the output of said signal level adjusting means for controlling said second governor or means.
Claim 4
Dependent Claim
235 words
In a gas turbine system including a combustion chamber receiving combustion air from a turbine driven compressor and a fuel metering device for metering the flow of fuel to said combustion chamber, a governing arrangement for controlling said fuel metering device comprising first governor means responsive to a first engine operating characteristic for generating a first control signal, a sensor having an inherent response delay for sensing a second engine operating characteristic, second governor means connected to said sensor for generating an adjusting signal, logic means responsive to the first control signal and the adjusting signal for providing an output fuel flow control signal for application to said fuel metering device, and control means responsive to variations in said output fuel flow control signal and a signal representing a third engine operating characteristic for automatically controlling said second governor means to compensate for the inherent response delay of said sensor, said control means including a differentiating circuit means for differentiating the output fuel flow control signal, signal level adjusting means responsive to said third engine operating characteristic and the output of said differentiating circuit means for generating a signal representing an additive value for the value insufficiently sensed by said sensor as a result of the response delay, and a first summing junction receiving the output of said sensor and the output of said signal level adjusting means for controlling said second governor or means.
Claim 5
Dependent Claim
34 words
The combination defined in claim 1, wherein the outputs of said first and second governor means are connected to a second summing junction forming said logic means providing the output fuel flow control signal.
Claim 6
Dependent Claim
46 words
The combination defined in claim 1, wherein said logic means is connected between said respective first and second governor means and said fuel metering device for providing as the output fuel flow control signal the smaller of the outputs of said first and second governor means.
Claim 7
Dependent Claim
25 words
The combination defined in claim 1, wherein the engine characteristic to which said first governor means is responsive is the rotational speed of said turbine.
Claim 8
Dependent Claim
22 words
The combination defined in claim 1, wherein said signal representing said third engine operating characteristic is proportional gas flow through the engine.
Claim 9
Dependent Claim
22 words
The combination defined in claim 1, wherein said signal representing said third engine operating characteristic is the rotational speed of said turbine.
Claim 10
Dependent Claim
39 words
The combination defined in claim 1, wherein the outputs of said first and second governor means is a quotient value B/K, where B is fuel flow and K is at least one characteristic value oF the gas turbine system.
Claim 11
Dependent Claim
47 words
The combination defined in claim 2, further including a multiplier having one input connected to the output of said second summing junction and a second input receiving a signal representing an additional engine operating characteristic, the output of the multiplier being connected to said fuel metering device.
Claim 12
Dependent Claim
26 words
The combination defined in claim 1, wherein the engine characteristic to which said second governor means is responsive is a temperature downstream of said combustion chamber.
Claim 13
Dependent Claim
28 words
The combination defined in claim 1, wherein the engine characteristics to which said first and second governor means are responsive are pressure ratios of the gas turbine system.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |