US3813874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine for series or parallel operation, subdivided into at least two sections with parallel axes
Assignee: MTU Aero Engines AG
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Filing: 1971-06-03
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Granted: 1974-06-04
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Expires: 1991-06-03
Abstract
Abstract A gas turbine, particularly for vehicles, with a low-pressure compressor, a high-pressure compressor, a heat-exchanger, a combustion chamber, a compressor turbine, an output turbine with adjoining speed-reduction gear and with a shifting mechanism for series and parallel operation consisting preferably of shifting elements, in which the individual aggregates are subdivided into at least two sections with preferably parallelly disposed axes.
Inventors
- 👤 W Bruder
- 👤 H Grieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:09
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/20; F02C9/00; F02C9/16
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
256 words
A compact arrangement of rotatable-engine-units and transmission means for a gas turbine engine of the type having a plurality of operatively interconnected rotatable-engine-units and combustion chamber means operatively interconnected with said rotatable-engine units, said plurality of rotatable-engine-units including: low-pressure compressor means, high-pressure compressor means, compressor turbine means, and output turbine means; each of said rotatable-engine-units having a rotatableengine-unit axis and means rotatable about said rotatable-engineunit axis, said engine being divided into at least two sections with at least one of said rotatable-engine-units in each section, each section having a longitudinally extending section axis which coincides with the rotatable-engine-unit axes of the respective rotatable-engine-units in said section, said section axes being spaced from and parallel to one another, wherein transmission means are provided for operatively interconnecting the rotatableengine-units in each section with the rotatable-engine-units in the other sections and for drivingly connecting said output turbine means to an outside load, wherein shifting means are provided for selectively shifting the gas flow through said rotatable-engine-units between series operation and parallel operation of said engine, wherein said low and high compressor means are interconnected with output flow from said low compressor means being supplied as input flow to said high compressor means during series operation, wherein the input flow to said high compressor means is separate from the output flow from said low compressor means during parallel operation, and wherein said shifting means includes a first shifting unit for controlling flow to said compressor turbine means and a second shifting unit for controlling flow to said output turbine means.
Claim 2
Dependent Claim
256 words
A compact arrangement of rotatable-engine-units and transmission means for a gas turbine engine of the type having a plurality of operatively interconnected rotatable-engine-units and combustion chamber means operatively interconnected with said rotatable-engine units, said plurality of rotatable-engine-units including: low-pressure compressor means, high-pressure compressor means, compressor turbine means, and output turbine means; each of said rotatable-engine-units having a rotatableengine-unit axis and means rotatable about said rotatable-engineunit axis, said engine being divided into at least two sections with at least one of said rotatable-engine-units in each section, each section having a longitudinally extending section axis which coincides with the rotatable-engine-unit axes of the respective rotatable-engine-units in said section, said section axes being spaced from and parallel to one another, wherein transmission means are provided for operatively interconnecting the rotatableengine-units in each section with the rotatable-engine-units in the other sections and for drivingly connecting said output turbine means to an outside load, wherein shifting means are provided for selectively shifting the gas flow through said rotatable-engine-units between series operation and parallel operation of said engine, wherein said low and high compressor means are interconnected with output flow from said low compressor means being supplied as input flow to said high compressor means during series operation, wherein the input flow to said high compressor means is separate from the output flow from said low compressor means during parallel operation, and wherein said shifting means includes a first shifting unit for controlling flow to said compressor turbine means and a second shifting unit for controlling flow to said output turbine means.
Claim 3
Dependent Claim
39 words
An arrangement according to claim 1, characterized in that the high-pressure compressor means directly adjoins the transmission means whereas inlets for the high-pressure compressor means and the low-pressure compressor means are arranged on the sides opposite the transmission means.
Claim 4
Dependent Claim
39 words
An arrangement according to claim 1, characterized in that an intermediate shaft is arranged between the transmission means and the compressor means and in that inlets for the compressor means are provided on the side facing the transmission means.
Claim 5
Dependent Claim
21 words
An arrangement according to claim 1, wherein said transmission means operatively engages said rotatable-engine-units only at said one transverse end face.
Claim 6
Dependent Claim
76 words
An arrangement according to claim 1, wherein gas generator means consisting of the low-pressure compressor means, the high-pressure compressor means, the compressor turbine means, and said first shifting unit are in a first of said sections; wherein the output turbine means together with said second shifting unit are in a second of said sections; and wherein the combustion chamber means is disposed in a third of said sections along the section axis of said third section.
Claim 7
Dependent Claim
32 words
An arrangement according to claim 5, wherein said transmission means includes a transmission housing, and wherein said gas generator means and said output turbine means are flangedly connected to said transmission housing.
Claim 8
Dependent Claim
23 words
An arrangement according to claim 6, characterized in that the heat-exchanger means partially encloSes the gas generator means and the output turbine means.
Claim 9
Dependent Claim
26 words
An arrangement according to claim 7, characterized in that a second gas generator means is arranged in a further of said sections on a further axis.
Claim 10
Dependent Claim
53 words
An arrangement according to claim 7, characterized in that said transmission means includes an engageable means connecting the gas generator means with the output turbine means by way of a speed-reduction gear means of the means for connecting to an outside load, which engageable means is adapted to be engaged for engine braking.
Claim 11
Dependent Claim
16 words
An arrangement according to claim 9, characterized in that said engageable means is a friction clutch.
Claim 12
Dependent Claim
16 words
An arrangement according to claim 9, characterized in that said engageable means is a fluid coupling.
Claim 13
Dependent Claim
41 words
An arrangement according to claim 1, wherein the high-pressure compressor means and the compressor turbine means are in a first of said sections and wherein the low-pressure compressor means and the output turbine means are in a second of said sections.
Claim 14
Dependent Claim
38 words
An arrangement according to claim 12, wherein said transmission means includes gear means drivingly interconnecting said low-pressure compressor means, said high pressure compressor means, and said compressor turbine means to form a gas generator means of the engine.
Claim 15
Dependent Claim
19 words
An arrangement according to claim 1, in which the gas turbine engine drives the wheels of a motor vehicle.
Claim 16
Dependent Claim
41 words
An arrangement according to claim 4, wherein the high-pressure compressor means and the compressor turbine means are in a first of said sections and wherein the low-pressure compressor means and the output turbine means are in a second of said sections.
Claim 17
Dependent Claim
36 words
An arrangement according to claim 1, characterized in that the heat-exchanger means partially encloses a gas generator means formed by the low and high-pressure compressor means and the compressor turbine means, and the output turbine means.
Claim 18
Dependent Claim
20 words
An arrangement according to claim 16, characterized in that a second gas generator means is arranged on a further axis.
Claim 19
Dependent Claim
66 words
An arrangement according to claim 1, characterized in that said transmission means includes an engageable means connecting a gas generator means, formed by the low and high-pressure compressor means and the compressor turbine means, with the output turbine means by way of a speed-reduction gear means of the means for connecting to an outside load, which engageable means is adapted to be engaged for engine braking.
Claim 20
Dependent Claim
16 words
An arrangement according to claim 18, characterized in that said engageable means is a friction clutch.
Claim 21
Dependent Claim
16 words
An arrangement according to claim 18, characterized in that said engageable means is a fluid coupling.
Claim 22
Dependent Claim
40 words
An arrangement according to claim 1, wherein said transmission means is disposed at only one transverse end face of the sections of said engine, and wherein said transmission means operatively engages said rotatable-engine-units only at said one transverse end face.
Claim 23
Dependent Claim
74 words
An arrangement according to claim 1, wherein said low-pressure compressor means and said high-pressure compressor means are disposed in a first of said sections, wherein said output turbine means is disposed in a second of said sections, and wherein said shifting means includes a first movable shifting element surrounding the section axis of said first of said sections and a second movable shifting element surrounding the section axis of said second of said sections.
Claim 24
Dependent Claim
20 words
An arrangement according to claim 22, wherein each of said first and second shifting elements include movable fluid conducting portions.
Claim 25
Dependent Claim
27 words
An arrangement according to claim 22, wherein at least one of said first and second shifting elements is pivotably movable about the respective section axis surrounded thereby.
Claim 26
Dependent Claim
25 words
An arrangement according to claim 22, wherein each of said first and second shifting elements are pivotably movable about the respective section axis surrounded thereby.
Claim 27
Dependent Claim
50 words
An arrangement according to claim 1, wherein said low-pressure compRessor means, said high pressure compressor means, and said first shifting unit are in a first of said sections; and wherein the compressor turbine means, the output turbine means and said second shifting unit are in a second of said sections.
Claim 28
Dependent Claim
31 words
An arrangement according to claim 26, wherein the combustion chamber means adjoins directly an outlet connection of the heat-exchanger means and is operatively connected with the first and second shifting units.
Claim 29
Dependent Claim
23 words
An arrangement according to claim 27, characterized in that the combustion chamber means is directly connected with said first and second shifting units.
Claim 30
Dependent Claim
26 words
An arrangement according to claim 27, characterized in that the combustion chamber means is connected with said first and second shifting units by pipe line means.
Claim 31
Dependent Claim
25 words
An arrangement according to claim 27, wherein said low-pressure compressor means is an axial compressor, and wherein said high-pressure compressor means is a radial compressor.
Claim 32
Dependent Claim
64 words
An arrangement according to claim 27, wherein the combustion chamber means is in said second section and includes a central main inlet means to the compressor turbine means and an auxiliary inlet means surrounding the main inlet means concentrically to the second shifting unit, said auxiliary inlet means consisting of sheet metal plating and being adapted to be closed by said second shifting unit.
Claim 33
Dependent Claim
13 words
An arrangement according to claim 31, characterized in that said plating is apertured.
Claim 34
Dependent Claim
16 words
An arrangement according to claim 31, characterized in that said plating is provided with connecting stubs.
Claim 35
Dependent Claim
50 words
An arrangement according to claim 31, characterized in that the combustion chamber means, the second shifting unit, outlet channel means of the compressor turbine means, and outlet channel means of the output turbine means are secured at a transmission housing of said transmission means by way of concentric ring means.
Claim 36
Dependent Claim
40 words
An arrangement according to claim 34, characterized in that the combustion chamber means, the second shifting unit, the outlet channel means of the compressor turbine means, and the output turbine means are secured at the transmission housing by four arms.
Claim 37
Dependent Claim
22 words
An arrangement according to claim 34, characterized in that the output turbine means includes a turbine housing laterally adjoining the heat-exchanger means.
Claim 38
Dependent Claim
23 words
An arrangement according to claim 36, characterized in that the output turbine means is supported in a bracket means of the transmission housing.
Claim 39
Dependent Claim
35 words
An arrangement according to claim 37, characterized in that the high and low compressor means and the first shifting unit are supported in and connected with the transmission housing by way of concentric ring means.
Claim 40
Dependent Claim
63 words
An arrangement according to claim 38, characterized in that the compressor turbine means and the high and low compressor means include shafts which are operatively connected with each other by way of portions of said transmission means including a pair of gear means mounted on intermediate shafts and disposed in the speed-reduction gear means of the means for connecting to an outside load.
Claim 41
Dependent Claim
65 words
An arrangement according to claim 39, wherein said means for connecting to an outside load includes an output shaft, wherein one-half of a fluid coupling arranged on the output shaft serves as one gear means of the pair of gear means, which one-half is provided with a toothed rim, and wherein the other half of the fluid coupling is operatively connected with the output shaft.
Claim 42
Dependent Claim
60 words
An arrangement according to claim 40, further comprising bearing support means of the output turbine means and of a main shaft of the speed-reduction gear means which is constructed as planetary gear adjoining the output turbine means, wherein said bearing support means are constructed hollow for accommodating extension therethrough of a compressor turbine output shaft of the compressor turbine means.
Claim 43
Dependent Claim
27 words
An arrangement according to claim 41, characterized in that said compressor turbine output shaft is composed of several shaft sections connected with each other by plug-type connections.
Claim 44
Dependent Claim
50 words
An arrangement according to claim 41, characterized in that an output pinion of at least one of the two parts consisting of the compressor turbine means and of the intermediate shafts of the pair of gear means, carries at least one additional drive gear means for control and auxiliary equipments.
Claim 45
Dependent Claim
34 words
An arrangement according to claim 43, characterized in that an equalization disk means for the axial thrust is arranged on a shaft of the high-pressure compressor means which extends into the speed-reduction gear means.
Claim 46
Dependent Claim
28 words
An arrangement according to claim 44, characterized in that shafts of the low-pressure compressor means and of the high-pressure compressor means are connected by a splined hollow shaft.
Claim 47
Dependent Claim
26 words
An arrangement according to claim 45, characterized by tie rod means extending through said splined hollow shaft for the axial connection of the two compressor shafts.
Claim 48
Dependent Claim
41 words
An arrangement according to claim 45, characterized in that the high-pressure compressor means directly adjoins the speed-reduction gear means whereas inlets for the high-pressure compressor means and the low-pressure compressor means are arranged on the sides opposite the speed-reduction gear means.
Claim 49
Dependent Claim
47 words
An arrangement according to claim 45, characterized in that an intermediate shaft is arranged between the speed-reduction gear means and the high and low compressor means and in that inlets for the high and low compressor means are provided on the side facing the speed-reduction gear means.
Claim 50
Dependent Claim
64 words
An arrangement according to claim 26, wherein the combustion chamber means is in said second section and includes a central main inlet means to the compressor turbine means and an auxiliary inlet means surrounding the main inlet means concentrically to the second shifting unit, said auxiliary inlet means consisting of sheet metal plating and being adapted to be closed by said second shifting unit.
Claim 51
Dependent Claim
50 words
An arrangement according to claim 26, characterized in that the combustion chamber means, the second shifting unit, outlet channel means of the compressor turbine means, and outlet channel means of the output turbine means are secured at a transmission housing of said transmission means by way of concentric ring means.
Claim 52
Dependent Claim
22 words
An arrangement according to claim 50, characterized in that the output turbine means includes a turbine housing laterally adjoining the heat-exchanger means.
Claim 53
Dependent Claim
27 words
An arrangement according to claim 26 characterized in that the output turbine means is supported in a bracket means of a transmission housing of said transmission means.
Claim 54
Dependent Claim
32 words
An arrangement according to claim 52, characterized in that the compressor means and the first shifting unit are supported in and connected with the transmission housing by way of concentric ring means.
Claim 55
Dependent Claim
55 words
An arrangement according to claim 26, characterized in that the compressor turbine means and the high and low-compressor means include shafts which are operatively connected with each other by way of a pair of gear means mounted on intermediate shafts and disposed in speed-reduction gear means of the means for connecting to an outside load.
Claim 56
Dependent Claim
65 words
An arrangement according to claim 52, wherein said means for connecting to an outside load includes an output shaft, wherein one-half of a fluid coupling arranged on the output shaft serves as one gear means of the pair of gear means, which one-half is provided with a toothed rim, and wherein the other half of the fluid coupling is operatively connected with the output shaft.
Claim 57
Dependent Claim
60 words
An arrangement according to claim 26, further comprising bearing support means of the output turbine means and of a main shaft of the speed-reduction gear means which is constructed as planetary gear adjoining the output turbine means, wherein said bearing support means are constructed hollow for accommodating extension therethrough of a compressor turbine output shaft of the compressor turbine means.
Claim 58
Dependent Claim
27 words
An arrangemEnt according to claim 56, characterized in that said compressor turbine output shaft is composed of several shaft sections connected with each other by plug-type connections.
Claim 59
Dependent Claim
107 words
An arrangement according to claim 56, characterized in that the compressor turbine means and the high and low compressor means include shafts which are operatively connected with each other by way of portions of said transmission means including a pair of gear means mounted on intermediate shafts and disposed in the speed-reduction gear means of the means for connecting to an outside load, and in that an output pinion of at least one of the two parts consisting of the compressor turbine means and of the intermediate shafts of the pair of gear means, carries at least one additional drive gear means for control and auxiliary equipments.
Claim 60
Dependent Claim
38 words
An arrangement according to claim 26, characterized in that an equalzation disk means for axial thrust is arranged on a shaft of the high-pressure compressor means, which shaft extends into a speed-reduction gear means of said transmission means.
Claim 61
Dependent Claim
28 words
An arrangement according to claim 26, characterized in that shafts of the low-pressure compressor means and of the high-pressure compressor means are connected by a splined hollow shaft.
Claim 62
Dependent Claim
25 words
An arrangement according to claim 60, characterized by tie rod means extending through said hollow shaft for the axial connection of the two compressor shafts.
Claim 63
Dependent Claim
20 words
An arrangement according to claim 1, further comprising heat-exchanger means operatively interconnected with said combustion chamber means and said rotatable-engine-units.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |