US3888078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governing device for a gas turbine system exemplified by a vehicular or aircraft engine
Assignee: MTU Aero Engines AG
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Filing: 1972-12-18
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Granted: 1975-06-10
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Expires: 1992-12-18
Abstract
Abstract Governing device for a gas turbine system, such as a vehicular or aircraft engine, having at least one governor to vary the fuel flow, characterized in that the governor output representing the ratio of fuel flow to one or a combination of engine characteristics is automatically multiplied by that one or combination of engine characteristics to obtain a fuel flow control signal.
Inventors
- 👤 Christian Greune
- 👤 Friedrich Hackl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28; F02C9/32; F05; F05B; F05B2200/00; F05B2200/10; F05B2200/13
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 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 device for controlling said fuel metering device comprising governor means responsive to a selected engine characteristic to provide an output signal representing the ratio of fuel flow to at least the engine characteristic relating to the rotational speed of a turbomachine in the system and multiplier means connected between said governor means and said fuel metering device and responsive to a regulation signal representing at least the engine characteristic relating to rotational speed for multiplying said output signal of said governor means by said regulation signal, thereby providing a fuel control signal representing required fuel flow to control said fuel metering device.
Claim 2
Dependent Claim
136 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 device for controlling said fuel metering device comprising governor means responsive to a selected engine characteristic to provide an output signal representing the ratio of fuel flow to at least the engine characteristic relating to the rotational speed of a turbomachine in the system and multiplier means connected between said governor means and said fuel metering device and responsive to a regulation signal representing at least the engine characteristic relating to rotational speed for multiplying said output signal of said governor means by said regulation signal, thereby providing a fuel control signal representing required fuel flow to control said fuel metering device.
Claim 3
Dependent Claim
54 words
The combination defined in claim 1, wherein said output signal represents the ratio of fuel flow to the engine characteristic relating to the rotational speed of a turbomachine and at least one additional engine characteristic selected from the group consisting of air pressure, gas pressure, air temperature, gas temperature and combustion chamber temperature gradient.
Claim 4
Dependent Claim
31 words
The combination defined in claim 1, further including logic means for limiting the output of said governor means applied to said multiplier means to values between selected maximum and minimum values.
Claim 5
Dependent Claim
52 words
The combination defined in claim 3, wherein said logic means includes a logic circuit having one input connected to the output of said governor means, a second input connected to a level signal representing a minimum desired value of the governor means output signal and an output connected to said multiplier means.
Claim 6
Dependent Claim
44 words
The combination defined in claim 3, wherein said logic means includes a logic circuit which passes the output of said governor means only when it falls between maximum and minimum values, and adjusting means for adjusting the level of said maximum and minimum values.
Claim 7
Dependent Claim
18 words
The combination defined in claim 5, wherein said adjusting means is responsive to at least one engine characteristic.
Claim 8
Dependent Claim
54 words
The combination defined in claim 6, wherein said output signal represents the ratio of fuel flow to the engine characteristic relating to the rotational speed of a turbomachine and at least one additional engine characteristic selected from the group consisting of air pressure, gas pressure, aIr temperature, gas temperature and combustion chamber temperature gradient.
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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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |