DE102012015104A1 - Thruster of vehicle e.g. aircraft, has rechargeable power supply unit that is arranged to temporarily exclusive power supply of electric machine arrangement which directly-drives compressor - Google Patents

Abstract

The thruster (1) has a compressor (2) that is equipped with a compressor stage. A working fluid stream (4) is temporarily flowed through the compressor to supply the power. An electric machine arrangement (5) is provided with an electric machine (6) to directly drive the compressor. A rechargeable power supply unit (7) is arranged to the temporarily exclusive power supply of the electric machine arrangement. An independent claim is included for a method for operating vehicle thruster.

Description

The present invention relates to a vehicle engine, a vehicle having such a vehicle engine, and a method of operating this vehicle engine. The invention is particularly advantageous as a propulsion of aircraft and is described in connection with such. It should be noted that the vehicle engine can also be used regardless of the type of vehicle.

Engines for driving vehicles are known from the prior art, which have at least one compressor for compressing a working fluid flow. The high utility-specific power consumption of some of these vehicle engines is sometimes perceived as problematic.

It is an object of the invention to provide a vehicle engine with compressor which is operable with lower power consumption specific to power.

The object is achieved by a vehicle engine according to claim 1. Claim 7 describes a vehicle with this vehicle engine. The object is also achieved by an operating method for this vehicle engine according to claim 8. Preferred embodiments of the invention are subject of the dependent claims.

According to the invention, the vehicle engine described below, which may be designed in particular as an aircraft engine, has at least one compressor with at least one compressor stage. This compressor is designed to at least temporarily supply power to a working fluid flow which at least temporarily flows through this compressor, at least temporarily to compress this working fluid flow, at least temporarily. The vehicle engine has an electric machine arrangement with at least one electric machine. This electric machine arrangement is designed for, in particular direct, in particular mechanical, in particular temporary exclusive, driving this compressor. The vehicle engine has at least one, in particular rechargeable, energy supply device. This power supply device is designed for, in particular temporary, exclusive electrical power supply of this electric machine arrangement.

Mode of operation

In many known vehicle drives useful power is provided for driving the vehicle by a heat engine. In many known heat engines, the conversion of provided chemically bound power into mechanically usable power by a thermodynamic cycle, in particular an open cycle process is described. Here, a compressor is indirectly supplied such that a combustion process downstream energy converter, such as a turbine, provides mechanical power. This conversion of chemically bound into mechanically usable power is usually associated with losses and leads to poorer nuclear efficiencies, referred to in thermal engines as thermal efficiency.

According to the invention, this compressor is driven by this electric machine arrangement, which provides power to the compressor, in particular independently of a turbine. The provision of mechanical power by this electric machine arrangement in conjunction with the electrical power supply device can be done with a higher nuclear efficiency than would be possible with a heat engine. The nuclear efficiency results from the component efficiencies of the electric machine assembly and the power supply device. This compressor can be supplied according to the invention more efficient with mechanical power. The required mechanical power for operating the compressor is not taken as usual from a turbine connected downstream of a combustion process, but is obtained from an electric machine arrangement. The losses in the conversion of electrical power provided to power usable mechanically by the compressor are less than the multiple conversion of common chemical energy provided by a fuel, further into thermal energy of the working fluid stream, further into mechanically available turbine power. Thus, the overall efficiency, especially the nuclear efficiency, of this vehicle engine is improved, the utility-specific power consumption is lowered, and the underlying object is achieved.

definitions

Under the overall efficiency of the vehicle engine in the context of the invention is to understand the ratio of supplied power, in particular electrical power or chemically bound power to propulsion power (propulsive power = thrust × speed of movement of the vehicle).

Under the propulsion efficiency in the context of the invention is to be understood, the ratio of the power in the working fluid flow (blasting power) to the propulsive power.

Under the nuclear efficiency in the context of the invention is to understand the ratio of power supplied, in particular electrical power or chemically combined power to the power in the working fluid stream.

A component efficiency in the sense of the invention means the ratio of supplied power to usable power of a component.

• • zur Zufuhr von Leistung an diesen Arbeitsfluidstrom ausgestaltet ist, und/oder
• • zur Verdichtung, insbesondere zur Steigerung des Totaldrucks (die Summe aus statischem und dynamischem Druck), insbesondere zur Verzögerung, dieses Arbeitsfluidstroms ausgestaltet ist.

Under a compressor in the context of the invention is a device to understand, which in particular

• • Is designed to supply power to this working fluid stream, and / or
• • For the compression, in particular for increasing the total pressure (the sum of static and dynamic pressure), in particular for the delay, this working fluid flow is configured.

A working fluid flow in the sense of the invention is to be understood in particular as meaning a mass flow or volume flow which flows through the vehicle engine, in particular the compressor, at least temporarily, in particular during operation of the vehicle engine. In particular, this working fluid stream may comprise air, in particular in the ambient state, a gas, a gas mixture, oxygen, an oxidizing agent, a liquid and / or water. This working fluid flow is intended to enter the vehicle engine or compressor, to be compressed by this compressor and then exit from this compressor. Later, this working fluid stream exits the vehicle engine.

An electric machine arrangement within the meaning of the invention is to be understood in particular as meaning an arrangement having one or more electric machines. The electric machine arrangement or its electric machine are designed to convert supplied electric power into mechanical power. Preferably, the at least one electric machine is formed with a rotor and a stator. This mechanical power is used to drive this compressor, in particular for the compression of this working fluid flow. According to a preferred refinement, this at least one electric machine is designed as a three-phase motor, an asynchronous motor, a synchronous motor, an AC motor, a DC motor.

An energy supply device in the sense of the invention is to be understood as a device which serves in particular for supplying electrical energy or electrical power to this electric machine arrangement.

• • eine Reibkraft, insbesondere eine Reibkraft aus Gleitreibung, Rollreibung oder aus einem das Fahrzeug umströmenden Fluid,
• • einer Gravitationskraft, oder eine entsprechende Kraftkomponente, welche auf das Fahrzeug wirkt,
• • eine Widerstandskraft aus einem Druck oder Staudruck, welche entgegen der Bewegung des Fahrzeugs gerichtet ist.

Under this thrust in the context of the invention, a driving force or a buoyancy force to understand. This thrust force is used in particular for the acceleration of a vehicle and / or for overcoming a resistance force, which can counteract the movement of the vehicle. Under this resistance are also to be understood:

• A friction force, in particular a friction force from sliding friction, rolling friction or from a fluid flowing around the vehicle,
• A gravitational force, or a corresponding force component, which acts on the vehicle,
• • A resistance force from a pressure or back pressure, which is directed against the movement of the vehicle.

Preferred embodiments

Hereinafter, preferred embodiments of the invention and their advantages will be described.

Preferably, the compressor is at least partially, more preferably temporarily exclusively driven by the electric machine assembly. The utility-specific energy consumption of this preferred embodiment is reduced. This preferred embodiment offers the advantage of increased nuclear efficiency of the vehicle engine.

Preferably, this compressor has at least one or more compressor stages. Preferably, this compressor stage has a bladed rotor, in particular designed as a rotating blade row, which is mounted for rotation about a longitudinal axis of this compressor stage or this compressor. Preferably, this compressor stage has a bladed stator, in particular connected downstream of the rotor, in particular designed as a non-rotating blade row.

Preferably, the compressor has a bladed Vorleitgitter whose blades are arranged about axes, in particular perpendicular to the axis of rotation of the compressor, rotatable. Preferably, this Vorleitgitter is arranged at the inlet of the compressor. Preferably, this Vorleitgitter is connected upstream of the first rotor of the compressor.

Preferably, this compressor has at least two or more of these compressor stages, which each have this bladed rotor, wherein particularly preferably the rotors of these at least two compressor stages can rotate in opposite directions of rotation or in opposite directions. More preferably, at least some of these compressor stages have no stators. This preferred embodiment offers the advantage of a smaller number of components, lower weight, a small dimension or length and / or lower production costs with respect to the rotational axis of the compressor.

Preferably, this compressor has at least two or more of these compressor stages, which each have this bladed rotor, wherein particularly preferably the rotors of these at least two compressor stages can rotate at different angular velocities.

Preferably, this compressor has at least 5 of these compressor stages, more preferably at least 10, more preferably at least 20, even more preferably at least 50 compressor stages. This preferred embodiment offers the advantage that a higher compression of the working fluid flow can be achieved.

Preferably, this compressor is designed to increase the total pressure of the working fluid flow so that the total pressure ratio q _t q _t = p _t3 / p _t2 where p _{t3 is} the total pressure of the working fluid stream exiting this compressor and p _{t2 is} the total pressure of the working fluid stream entering this compressor, at least 1.2, more preferably at least 1.5, more preferably at least 2.

Preferably, this electric machine arrangement is designed to be supplied with power, at least temporarily, exclusively from this power supply device.

Preferably, the electric machine arrangement is designed for temporarily exclusive drive of the compressor.

This power supply device preferably serves at least temporarily for the exclusive electrical power supply of this electric machine arrangement.

Preferably, this power supply device is formed with a battery, a capacitor, a double-layer capacitor, a fuel cell and / or a coil.

The energy supply device preferably has a control device which is designed to control the provision of energy by this energy supply device.

The energy supply device preferably has a connection device, wherein the connection device serves for the electrical connection to the electric machine arrangement.

Preferably, the vehicle engine has an outlet nozzle, which may be arranged downstream of the compressor with respect to the working fluid flow. The outlet nozzle has an outlet opening for the working fluid flow. According to a preferred embodiment, the size of the cross-sectional area of the outlet opening is variable. The outlet nozzle is used in particular to convert pressure in the working fluid stream into kinetic energy.

The vehicle engine preferably has a combustion device. This combustion device is arranged with respect to the working fluid flow, in particular immediately after this compressor. The combustion device can be flowed through by at least part of the working fluid flow. The combustion device is configured for receiving and burning a fuel flow which is in particular time-dependent. Furthermore, the combustion device is configured to supply, in particular, thermal energy or power to this working fluid flow, the energy chemically bound to the supplied fuel flow being converted into thermal energy. The combustion device is configured to supply further energy or power to the working fluid stream after it leaves the compressor, as a result of which the temperature of the working fluid flow can be increased. This preferred embodiment has the advantage that the thrust provided by the vehicle engine, regardless of the electrical power supplied to the compressor, is controllable by means of the supplied fuel flow.

According to a preferred embodiment, the combustion device is designed to be supplied only temporarily with a fuel flow, especially only when needed, especially if the achievable by means of the compressor thrust force for the movement of a vehicle with this vehicle engine is not sufficient. In particular, the amount of fuel flow is controlled depending on the amount of at least one, several or the sum of all of these drag forces acting on the vehicle.

Preferably, this compressor is arranged with respect to the working fluid flow immediately before a combustion device, so that the working fluid stream enters after leaving this compressor in particular directly into this combustion device. This preferred embodiment offers the advantage that the pressure of the working fluid stream at the outlet from this compressor substantially corresponds to the pressure of the working fluid stream at the inlet to this combustion device.

The power supply device acts as an independent energy source for supplying the vehicle engine, in addition to the fuel. By the power supply means indirectly supplying the compressor which can supply power to the working fluid flow, the proportion of the combustion means can be reduced. Thus, the emission of exhaust gases by the vehicle engine can be advantageously reduced.

The vehicle engine preferably has a turbine, in particular a high-speed turbine, in particular designated as a power turbine, when useful power is taken from this turbine. The turbine or power turbine is used in particular for the removal of power from this working fluid flow.

In a preferred embodiment, the power turbine is mechanically decoupled from, in particular electrically operated, compressor, in particular designed as a medium-pressure compressor or high-pressure compressor. Preferably, the power turbine is configured to provide mechanical power essentially exclusively as useful power, and in particular to supply it to a propulsion and / or buoyancy generator. Thus, the power turbine does not need to provide power for the compressor. Usually, a power turbine would be downstream of the turbines, which provide the power for the medium-pressure and high-pressure compressor mechanically coupled, and thus work in less energetic working fluid flow at already relaxed pressure. In this preferred embodiment, the power turbine can operate at high pressure, so that advantageously the turbine inlet temperature can be reduced with the same net power and thus the benefit-specific power consumption of the vehicle engine is reduced.

In an alternative, preferred embodiment, the power turbine is designed to provide the compressor, in particular as a medium-pressure compressor or high-pressure compressor, only partially with mechanical power. Thus, the power turbine does not need to fully provide the mechanical power for the compressor.

Preferably, this power turbine has at least one or more turbine stages. Preferably, this turbine stage has at least one bladed rotor, in particular designed as a rotating blade row, wherein the rotor is mounted for rotation about a longitudinal axis of this turbine stage or this power turbine. Preferably, this turbine stage has a bladed stator upstream of the rotor, in particular designed as a non-rotating blade row.

According to a preferred embodiment, one or more of these turbine stages, which together serve to relax the working fluid flow, are provided for the power turbine. Preferably, the power turbine has one of these turbine stages, more preferably at least 2, more preferably at least 5, more preferably at least 10, more preferably at least 15, more preferably at least 50 turbine stages. The power turbine is configured to relax the working fluid stream.

According to a preferred embodiment, the power turbine is designed uncooled, whereby in particular the apparatus construction of the vehicle engine is reduced. The cooling air flow must be provided by a compressor. A reduction of the cooling air increases the compressor efficiency. A reduction of the cooling air mass flow increases the turbine efficiency. A reduction in the mass flow of cooling air reduces the need for turbine power and thus reduces the fuel consumption / power consumption of the compressor and lowers the power-specific power consumption.

Alternatively, the power turbine, in particular at least one of its turbine stages, at least partially designed coolable, in particular depending on the turbine inlet temperature, in particular above a turbine inlet temperature of 1300 K, which in particular the durability of the power turbine is improved.

The vehicle engine preferably has a propulsion generator and / or a lift generator. The propulsion generator and / or the lift generator are configured to provide a thrust force F _s at least at times.

According to a preferred embodiment of this propulsion generator or this lift generators as open or jacketed, single-stage or multi-stage, in particular counter-rotating propeller or low-pressure compressor, also called "fan" or "fan" is formed. This propeller promotes a fluid flow, in particular air, at least temporarily contrary to the direction of travel of the vehicle or against a gravitational force or a corresponding force component.

A fan in the sense of the invention is to be understood in particular as meaning a bladed rotor which can convey a fluid, in particular air, at least temporarily against the direction of travel of the vehicle or against a gravitational force or a corresponding force component. The fan fluid flow, that is the fluid flow through the fan, experiences only a lower pressure increase, less in comparison to the pressure increase experienced by the working fluid flow by means of the compressor. The fan fluid stream is preferably significantly larger than the working fluid stream (core fluid stream). This preferred embodiment has the advantage that the propulsion efficiency is increased.

According to a preferred embodiment, the fan and / or propeller is arranged in front of the compressor with respect to the working fluid flow. In particular, the fan fluid stream after the fan divides into the working fluid stream through the compressor, in particular called the core fluid stream, and a jacket stream. In particular, the sheath flow later meets the working fluid flow again. This preferred embodiment has the advantage that a larger sheath flow can increase the propulsion efficiency. Advantageously, this preferred embodiment can be combined with the second preferred embodiment.

Preferably, the propulsion generator and / or lift generator has a transmission device. The transmission device is preferably designed as a planetary gear. The output shaft of the transmission device is mechanically connected to the propulsion generator and / or lift generator. The input shaft of the transmission device is mechanically connectable to the electric machine assembly and / or the power turbine. The transmission device makes it possible, at low speed of the propulsion generator and / or lift generators to operate the mechanically coupled power turbine faster rotating. This preferred embodiment offers the advantage of a lower number of stages and a reduced overall length. parameter unit State of the art Invention or preferred embodiment thrust kN 13 13 Overall compressor pressure ratio - 40 20 Shear-specific fuel consumption g / kN / s 15.3 5.55 Power turbine inlet temperature K 1120 950 Power turbine inlet pressure kPa 300 660

Preferably, the at least one of these electric machines of the electric machine arrangement has a rotor and a stator. The stator is fixed to the housing. The rotor is rotatably mounted with respect to the stator and designed for transmitting mechanical power or a torque to the compressor.

Preferably, the rotor, in particular cohesively or non-positively, connected to one of these bladed rotors one of these compressor stages, in particular integrally formed with one of these bladed rotors.

Preferably, the compressor has a plurality of these compressor stages.

According to a first preferred embodiment, the bladed rotors of at least one, two or more of these compressor stages are connectable to one another such that these rotors can be driven by the same electric machine. Preferably, the rotors of these at least one, two or more compressor stages with each other, in particular non-positively and / or cohesively, connectable. Preferably, the rotors of these at least one, two or more compressor stages are connectable to the rotor of the same electric machine. Preferably, the rotor of at least one of these electric machines with one of these bladed rotors, in particular non-positively and / or cohesively, connectable. This preferred embodiment has the advantage that, in particular, the power supplied to the compressor can be regulated by the, in particular turbine-independent, freely selectable rotational speed of the rotor of the electric machine. Furthermore, the freely selectable rotational speed of the compressor can advantageously be adapted to the aerodynamic and thermal state of the working fluid flow entering the compressor. This offers the advantage of increased component efficiency of the compressor at the design point and in operational operation.

According to a second preferred embodiment, the compressor stages, each with a bladed rotor but without stators and at least two, in particular opposite, assigned groups of compressor stages. The bladed rotors of a first group of compressor stages are connectable to each other such that these rotors can be driven by a first of these electric machines. Preferably, the rotors of the first group are connected to one another, in particular non-positively and / or materially, connectable, in particular screwed. The bladed rotors of a second group of compressor stages are connectable to each other such that these rotors can be driven by a second of these electric machines. Preferably, the rotors of the second groups are connectable to one another, in particular non-positively and / or materially. Preferably, at least one compressor stage of the first group is arranged adjacent to a compressor stage of the second group. Preferably, the rotors of the first group can rotate in opposite directions to the rotors of the second group. Preferably the runner of at least one of these electric machines with one of these bladed rotors, in particular non-positively and / or cohesively, connectable. This preferred embodiment has the advantage that can be regulated by the, in particular turbine-independent, freely selectable rotational speeds of the least two, in particular counter-rotating rotor of the least two electric machines, the power supplied to the compressor. Furthermore, can be adjusted by the freely selectable rotational speeds of the particular counter-rotating groups in an advantageous manner to the aerodynamic and thermal state of the working fluid stream, which enters the compressor. This offers the advantage of increased component efficiency of the compressor at the design point and in operational operation. This preferred embodiment also has the advantage that fewer compressor stages are necessary to achieve the same compressor pressure ratio as a conventional, non-counter-rotating compressor, so that advantageously the dimension or length of the compressor with respect to its longitudinal axis or axis of rotation is reduced.

According to a third preferred embodiment, the bladed rotors of at least one, two or more of these compressor stages, each comprising a bladed rotor and a respective bladed stator, can be driven by one, two or more independent ones of these electric machines, in particular at different speeds. Preferably, the rotors of these at least two compressor stages can rotate independently about the axis of rotation of the compressor. Preferably, the rotor of at least one of these electric machines with one of these bladed rotors, in particular non-positively and / or cohesively, connectable. Preferably, the rotors of at least two adjacent of these compressor stages are spaced by a stator. This preferred embodiment offers the advantage that the power supplied to the compressor, in particular that of the compressor stage, can be regulated by the, in particular turbine-independent, freely selectable rotational speeds of the rotor of the electric machines. Furthermore, the freely selectable rotational speeds of the bladed rotors can advantageously be adapted to the aerodynamic and thermal state of the working fluid stream entering the compressor, in particular into the compressor stage. This offers the advantage of increased component efficiency of the compressor at the design point and in operational operation. This preferred embodiment also has the advantage that, to achieve the same compressor pressure ratio as a conventional, uniformly rotating compressor, fewer compressor stages are necessary, so that advantageously the dimension or length of the compressor is reduced with respect to its longitudinal axis or axis of rotation. Furthermore, this preferred embodiment has the advantage that the aerodynamic and mechanical load of the individually rotating rotors can be reduced. Furthermore, the preferred embodiment allows the advantage that in case of failure at least one of the electric machines, the functioning rotors of the compressor stages on the regulation of the rotational speed can be adapted to the new operating condition.

According to a fourth preferred embodiment, the bladed rotors of at least two or more of these compressor stages, each having a bladed rotor but no stator, which are adjacent to each other, each by an independent of these electric machines, in particular to each other in opposite directions, are driven. Preferably, the rotor of at least one of these electric machines with one of these bladed rotors, in particular non-positively and / or cohesively, connectable. This preferred embodiment offers the advantage that the power of the rotor of the electric machines, in particular the turbine-independent, freely selectable rotational speeds, can be used to regulate the power supplied to the compressor, in particular the compressor stage. Furthermore, by the freely selectable rotational speeds of the, in particular counter-rotating, bladed rotors in an advantageous manner to the aerodynamic and thermal state of the working fluid stream, which enters the compressor, in particular in the compressor stage, adapted.

This offers the advantage of increased component efficiency of the compressor at the design point and in operational operation. This preferred embodiment also has the advantage that, to achieve the same compressor pressure ratio as a conventional, uniformly rotating compressor, fewer compressor stages are necessary, so that advantageously the dimension or length of the compressor is reduced with respect to its longitudinal axis or axis of rotation. Furthermore, this preferred embodiment has the advantage that the aerodynamic and mechanical load of the individually rotating rotors can be reduced. Furthermore, the preferred embodiment allows the advantage that in case of failure at least one of the electric machines, the functioning rotors of the compressor stages can be adapted via the regulation of the rotational speed to the new operating state.

Preferably, the power supply device is designed as a rechargeable battery. In particular, the energy supply device is designed to provide, at least temporarily, a predetermined first electrical power L ₁ [kW], particularly preferably for at least one hour. In particular, the charging capacity of the power supply device is at least 5000 kWh.

The power supply device acts as an independent energy source for supplying the vehicle engine, in addition to the fuel. By the power supply means indirectly supplying the compressor which can supply power to the working fluid flow, the proportion of the combustion means can be reduced. Thus, the emission of exhaust gases by the vehicle engine can be advantageously reduced.

Preferably, the vehicle engine is configured to be reversibly converted from a first operating state to a second operating state.

In the first operating state of the combustion device substantially no fuel flow or a fuel flow with an amount of substantially 0 kg / s and at the same time the electric machine assembly, a predetermined electric power can be supplied. In this first operating state, the vehicle engine operates without emitting exhaust gases, in particular without emissions of CO ₂ , NOx or combustion products. In this first operating state, the vehicle engine operates with less emission of noise.

In the second operating state of the combustion device, a predetermined of these fuel streams and at the same time the electric machine assembly, a predetermined electric power can be supplied. The size of the fuel flow is demand-dependent controllable, in particular depending on the required by the vehicle engine thrust. In this condition, the vehicle engine is capable of providing greater horsepower, particularly greater thrust, than in the first mode of operation.

Preferably, a vehicle, in particular an aircraft, at least one, two, three, four or more of these vehicle engines according to the invention, or at least one or more preferred embodiments of the vehicle engine according to the invention. Thus equipped, the vehicle offers the advantage that it can be operated with a lower specific power consumption. This preferred embodiment has the advantage that the vehicle can be supplied with sufficient thrust.

In particular, the at least one vehicle engine can be converted reversibly from the first operating state into the second operating state, in particular to provide a predetermined thrust force.

In particular, the at least one vehicle engine can be reversibly converted from the second operating state into the first operating state, in particular for providing a predetermined thrust force and / or in particular for reducing exhaust gases or emissions.

In particular, the fuel flow and the power provided to the at least one electrically operated compressor can be adapted to the variable resistance force. In particular, the fuel flow as well as the power provided to the least one electrically operated compressor can be increased with increasing resistance force, which the vehicle can be exposed to, at least temporarily, for greater useful power, in particular thrust. In particular, the fuel flow and the power provided to the at least one electrically operated compressor can be reduced with decreasing resistance force for smaller net power, in particular smaller thrust.

When an aircraft is equipped with at least one of these vehicle engines, the power provided by each of the combustor and the electric machine assembly may be adjusted to different operating conditions of the aircraft. In particular, in the ground and / or in the approach, the operation of the at least one vehicle engine in the first operating state offers the advantage of lower emissions of exhaust gases and / or noise.

Preferred embodiments of the vehicle engine

A first preferred embodiment of the vehicle engine comprises: one of these electrically operated compressors, one of these electric machine arrangements, one of these power supply devices and one of these combustion devices. If the power that can be supplied by the electric machine arrangement should not be sufficient for a useful power or thrust force demanded by the vehicle engine, then additional power can be supplied to the working fluid via the combustion device and thus the useful power or thrust force of the vehicle engine can be increased.

A second preferred embodiment of the vehicle engine comprises: one of these electrically operated compressors, one of these electric machine arrangements, one of these power supply devices, one of these combustion devices and one of these power turbines. By eliminating a turbine, in particular designed as a medium-pressure or high-pressure turbine, which drives the compressor, in particular designed as a medium-pressure or high-pressure compressor and the power turbine would be upstream, this power turbine can relax the high-energy working fluid flow at higher turbine inlet pressure. With the same net power of the vehicle engine, the power turbine can thus be sized smaller and / or operated at a lower turbine inlet temperature. This preferred embodiment offers the advantage of reduced utility-specific fuel consumption. This preferred embodiment offers the advantage that the power supplied to the compressor is controllable independently of the supplied fuel flow. This preferred embodiment has the advantage that the electric machine arrangement can be made smaller or lighter compared to an exclusively electrical supply according to claim 1, the power of the power turbine can be increased by means of the fuel flow. This preferred embodiment has the advantage that with reduced, in particular without, fuel supply, the vehicle engine with reduced or no emissions, in particular reduced emissions of CO ₂ and / or NO _x can be operated.

A third preferred embodiment of the vehicle engine substantially corresponds to the second preferred embodiment. In addition, the vehicle engine has a turbine-driven compressor, which is driven by a turbine, in particular the power turbine or an independent turbine upstream of the power turbine. This turbine-driven compressor is upstream or downstream of the electrically operated compressor. This preferred embodiment provides the advantage of a reduced power requirement for operating the electric machine assembly. This preferred embodiment has the advantage that the power supply device needs to provide less power.

A fourth preferred embodiment of the vehicle engine of the vehicle engine comprises: one of these electrically driven compressors, one of these electric machine arrangements, one of these power supply devices, one of these combustion devices, one of these propulsion generators and one of these power turbines. The compressor is driven exclusively by the electric machine assembly. Further, this preferred embodiment of the vehicle engine on an independent compressor, which is mechanically coupled to the power turbine. The power turbine drives the independent compressor as well as this propulsion generator. The independent compressor, the combustion device and the power turbine are flowed through by the same first working fluid flow. A second working fluid flow is used in this preferred embodiment, the cooling of the power turbine and / or the combustion device. The compressor is used to supply the second working fluid flow to this power turbine and / or to this combustion device. This preferred embodiment has the advantage that the power turbine and / or the combustion device can be cooled as needed.

operating procedures

For the operating method described below, the vehicle engine has at least one of these electrically operated compressors, this electric machine arrangement and this power supply device. Furthermore, the vehicle engine has this combustion device. Preferably, the vehicle engine has a propulsion generator and / or lift generator. The vehicle engine preferably has one of these power turbines.

The at least one vehicle engine is reversibly transferred from the first operating state (S1) in the second operating state (S2), in particular for providing a required net power or thrust, which is not to be effected exclusively by the electric machine assembly and / or the energy storage device. This preferred embodiment has the advantage that sufficient thrust can be provided by the vehicle engine.

In the second mode of operation, the fuel flow may be adjusted to the varying demand for thrust. In particular, the fuel flow is increased with increasing, demanded by the vehicle engine, thrust for greater thrust. In particular, the fuel flow is reduced with decreasing, sheared by the vehicle engine, thrust for smaller thrust. This preferred embodiment offers the advantage that sufficient thrust can be provided.

The at least one vehicle engine is converted reversibly from the second operating state (S2) into the first operating state (S1), in particular for the purpose of providing a predetermined thrust, in particular if the emission, in particular of exhaust gases and / or noise, is to be reduced. This preferred embodiment has the advantage that the vehicle can be operated with a low specific fuel consumption and a lower emission of emissions.

If an aircraft is equipped with at least one of these vehicle engines, the proportions of the power provided by the combustor and the electric machine assembly may be adjusted to different operating conditions of the aircraft. Particularly in the ground and / or in the approach, the operation of the at least one vehicle engine in its first operating state offers the advantage of lower emissions of exhaust gases and / or noise.

Further advantages, features and applications of the present invention will become apparent from the following description taken in conjunction with the figures. It shows:

1 schematically a preferred embodiment of the vehicle engine with inlet and outlet nozzle,

2 schematically a further preferred embodiment of the vehicle engine, which compared to the embodiment of 1 additionally has a combustion device,

3 schematically a further preferred embodiment of the vehicle engine, which compared to the embodiment of 2 additionally has a power turbine,

4 Temperature entropy diagrams for open gas turbine cycle processes for a vehicle engine according to the prior art (left) and for a preferred embodiment of the vehicle engine according to the invention (right) with combustion device and power turbine,

5 schematically a further preferred embodiment of the vehicle engine, which compared to the embodiment of 3 additionally has a propulsion generator,

6 1 schematically a symmetrical half section through a preferred embodiment of the electrically operated compressor with an electric machine of the vehicle engine according to the invention with combustion device and power turbine,

7 1 schematically shows a symmetrical half section through a further preferred embodiment of the electrically operated counter-rotating compressor with two electric machines of the vehicle engine according to the invention, with combustion device and power turbine,

8th schematically a symmetrical half-section through a further preferred embodiment of the vehicle engine, substantially corresponding to the 6 wherein each of the bladed rotors is drivable with one independent electric machine each,

9 schematically a symmetrical half-section through a further preferred embodiment of the vehicle engine, substantially corresponding to the 7 wherein adjacent bladed rotors can operate in opposite directions, and each of the bladed rotors is drivable with one independent electric machine each,

10 a temperature entropy diagram for the description of the operational mode of operation of the vehicle engine according to the invention (left) and an associated diagram for the representation of the required compressor power as a function of the turbine inlet temperature ratio (right),

11 schematically a further preferred embodiment of the vehicle engine, substantially corresponding to the 1 wherein the electrically operated compressor is substantially equivalent 9 is executed,

12 schematically a further preferred embodiment of the vehicle engine, substantially corresponding to the 2 wherein the electrically operated compressor is substantially equivalent 9 is executed

13 schematically a further preferred embodiment of the vehicle engine, substantially corresponding to the 3 wherein the electrically operated compressor is substantially equivalent 9 is executed,

14 schematically a further preferred embodiment of the vehicle engine, substantially corresponding to the 4 wherein the electrically operated compressor is substantially equivalent 9 is executed,

15 1 schematically shows a further preferred embodiment of the vehicle engine, in particular according to the third preferred embodiment of the vehicle engine, with an additional shaft-bound compressor, which is connected upstream of the electrically operated compressor,

16 1 schematically shows a further preferred embodiment of the vehicle engine, in particular according to the third preferred embodiment of the vehicle engine, with an additional shaft-connected compressor, which is connected downstream of the electrically operated compressor,

17 schematically a further preferred embodiment of the vehicle engine, in particular according to the third preferred embodiment of the vehicle engine, which in relation to the Embodiment according to 16 is supplemented by an independent, the turbine upstream turbine, which drives the additional shaft-bound compressor.

18 schematically another preferred embodiment of the vehicle engine, according to the fourth preferred embodiment of the vehicle engine.

19 schematically shows a further preferred embodiment of the vehicle engine, substantially corresponding to the 14 , wherein the propulsion generator is connected upstream of a core engine with electrically operated high-pressure compressor.

1 schematically shows a preferred embodiment of the vehicle engine 1 with outlet nozzle 14 , Next, the vehicle engine 1 this compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , the energy supply device 7 , the control device 13 the power supply device.

The working fluid flow 4 enters the compressor 2 and is condensed. The particular exclusively electrically operated compressor 2 is over a shaft from the electric machine assembly 5 driven. The energy for the electric machine arrangement 5 gets out of the power supply device 7 provided. After the compressor 2 occurs the working fluid flow 4 in the outlet nozzle 14 one. Through the outlet nozzle 14 leaves the working fluid flow 4 the vehicle engine 1 ,

2 schematically shows a further preferred embodiment of the vehicle engine 1 , which compared with the embodiment of 1 additionally a combustion device 12 having. Next, the vehicle engine 1 this particular exclusively electrically operated compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , the energy supply device 7 , the control device 13 the power supply device.

Notwithstanding the preferred embodiment according to 1 is the combustion device 12 between the compressors 2 and the outlet nozzle 14 connected. This combustion device 12 guides the working fluid flow 4 If necessary, additional power too. With the combustion device 12 can the vehicle engine 1 provide a higher thrust. By means of different fuel flows, the thrust can be influenced.

3 schematically shows a further preferred embodiment of the vehicle engine 1 , which compared with the embodiment of 2 in addition a power turbine 9 having. Next, the vehicle engine 1 this particular exclusively electrically operated compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , the energy supply device 7 , the control device 13 the power supply device, the combustion device 12 on.

Notwithstanding the preferred embodiment according to 2 is the power turbine 9 between the combustion device 12 and the outlet nozzle 14 connected. The power turbine 9 serves to remove power from the working fluid stream 4 , In particular, via a shaft and a gear that can the working fluid flow 4 taken power supplied to a consumer, in particular a propulsion generator and / or lift generator, not shown, in particular a fan or propeller or a drive wheel.

4 shows temperature entropy diagrams to open circular processes for a gas turbine vehicle engine according to the prior art (left) and for a preferred embodiment of the vehicle engine according to the invention (right) with combustion device and power turbine.

In the prior art vehicle engine, shown on the left, the working fluid flow is lossy compressed by means of a compressor from point 1 to point 2, with the temperature of the working fluid flow increasing. Subsequently, from point 2 to point 3, energy is supplied to the working fluid stream by combustion of fuel. The lossy relaxation of the working fluid flow takes place in two stages, first by means of a high-pressure turbine from point 3 to point 4. The power P _t removed by means of the high-pressure turbine is fed to the compressor mechanically coupled to the high-pressure turbine. Subsequently, the working fluid flow is further relaxed from point 4 to point 5, for example in a low-pressure turbine. The useful power P _Power taken from the working fluid flow by means of this low-pressure turbine serves to drive the vehicle.

In the following, only the differences between the preferred embodiment of the vehicle engine according to the invention and the vehicle engine according to the prior art will be explained.

In the preferred embodiment of the vehicle engine, the working fluid flow is also compressed by means of a compressor from point 1 'to point 2'. The operation of this particular exclusively electrically operated compressor 2 required energy or power is removed according to the invention of the electrical power supply device. Thereby, in contrast to a vehicle engine according to the prior art no turbine for operation of the compressor 2 needed. In order to extract the same specific net power from the power turbine as in the vehicle engine according to the prior art, the working fluid flow needs. to be supplied between the points 2 'and 3' the working fluid flow less energy than in the vehicle engine according to the prior art. Thus, the temperature of the working fluid stream when leaving the combustion device is lower than in the vehicle engine according to the prior art. However, the pressure of the working fluid stream entering the power turbine is significantly higher than in the vehicle engine according to the prior art, since no upstream relaxation has taken place. This pressure gain is significantly seen as an advantage of the invention. It is to drive the compressor no high-pressure turbine and no wave required. This reduces the weight and complexity of the apparatus design.

5 schematically shows a further preferred embodiment of the vehicle engine 1 , which compared with the embodiment of 3 in addition a propulsion generator 8th , especially with gears 22 , having. Next, the vehicle engine 1 this compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , the energy supply device 7 , the control device 13 the power supply device, the combustion device 12 , the power turbine 9 on.

Notwithstanding the preferred embodiment according to 3 is the propulsion generator 8th via a gearbox 22 and a wave with the power turbine 9 connected. The working fluid flow 4 by means of the power turbine 9 taken power is the propulsion generator 8th , trained here as a so-called fan fed.

6 schematically shows a half-section through a preferred embodiment of the vehicle engine 1 with combustion device 12 and power turbine 9 , Next, the vehicle engine 1 this electrically operated compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , a wave 21 , a gearbox 22 on. Not shown is the power supply device.

The electric machine 6 has a runner 16 and a stator 17 on. The runner 16 is via at least one mechanical connection with all bladed rotors 3 of the compressor 2 connected to their drive. The stators 11 of the compressor 2 are mounted on the housing. The power turbine 9 acts on the wave 21 and transfers the power extracted from the working fluid flow to the transmission input shaft of the transmission 22 , The propulsion generator and / or lift generator, not shown, is connected to the transmission output shaft of the transmission 22 connected.

7 schematically shows a half-section through a further preferred embodiment of the vehicle engine 1 , essentially according to the 6 , wherein each compressor stage of this electrically operated compressor only rotors 3 . 3a but has no stators, wherein at least one of these rotates rotates in opposite directions to an adjacent of these rotors. All rotors of the same direction of rotation are each by at least one electric machine 6 . 6a driven. Next, the vehicle engine 1 this compressor 2 , this electric machine arrangement 5 , here with one of these electric motors 6 , a wave 21 , a gearbox 22 on. Not shown is the power supply device.

The power turbine 9 acts on the wave 21 and transmits the power taken from the working fluid flow to the transmission input shaft of the transmission 22 , The propulsion generator and / or lift generator, not shown, is connected to the transmission output shaft of the transmission 22 connected.

8th schematically shows a half-section through a further preferred embodiment of the vehicle engine 1 , essentially according to the 6 , wherein each of the compressor stages of this electrically operated compressor 2 one rotor each 3 . 3a . 3b and one stator each 11 having. Each of these rotors 3 . 3a . 3b can of its own this electric machine 6 . 6a . 6b are driven. In particular, these rotors can 3 . 3a . 3b be driven at different angular speeds.

9 schematically shows a section through a further preferred embodiment of the vehicle engine 1 , essentially according to the 7 wherein each of the compressor stages electrically operated compressor 2 one of these rotors 3 . 3a . 3b but has no stator. The rotors 3 . 3a . 3b can own electrical machines 6 . 6a . 6b , in particular with different directions of rotation, are driven. The bladed rotor 3a rotates counter to the rotors 3 . 3b ,

10 1, on the left, shows a temperature entropy diagram for describing the operational mode of operation of the vehicle engine according to the invention for preferred embodiments of vehicle engines 1 , in particular according to 3 , in a standardized temperature-entropy diagram, as well as simplified on the right a corresponding diagram to show the required compressor capacity in relation to the turbine inlet temperature ratio.

The left diagram shows the operation of a preferred embodiment, in particular according to 3 , with electrically operated compressor 2 , Incinerator 12 as well as power turbine 9 , in three concrete operating states (outlined numbers 1-3, left).

In each of the three different operating conditions is the compression ratio of the electrically operated compressor 2 the same and thus, assuming a constant component efficiency, and the temperature ratio between the points 1 and 2 achieved by the compressor.

The power turbine operates depending on the operating state between the temperature levels 4 '' and 5 '', or 4 and 5 ', or 2 and 5. Due to the constant compression of the turbine inlet pressure is approximately constant.

In operating state 1 (bordered numeral 1), fuel is supplied and burned via the combustion device. As a result, the turbine inlet temperature rises to the highest value shown in point 4 ''. This corresponds to a ratio of compressor outlet temperature to turbine inlet temperature of about 1.7, as shown in the right diagram. In this operating state, the ratio of the power turbine efficiency to electrical compressor power is approximately 1.6. This means that the supply of chemically bound energy 1.6 times the supplied electrical energy can be removed in the form of useful power of the power turbine. This operating state should be taken especially at high power consumption.

Operating state 2 (outlined digit 2) corresponds essentially to operating state 1, but with a reduction in added fuel. As a result, only a lower turbine inlet temperature is achieved in point 4. The ratio of compressor outlet temperature to turbine inlet temperature is now only about 1.2, as shown in the right diagram. In this case, only about 1.1 times the electrically supplied power in the form of useful power in the power turbine is free. This operating condition should be taken especially at low fuel consumption.

The operating state 3 (bordered digit 3) is characterized in particular by the fact that no chemical energy is supplied to the vehicle engine. As a result, the compressor discharge temperature approximately corresponds to the turbine inlet temperature with a ratio of about 1, as shown in the right diagram. Due to the non-ideal component efficiencies and the concomitant losses, the ratio of the power turbine efficiency to electrical compressor power now only less than 1, as shown in the right diagram. This condition should preferably be taken if there is no requirement for fuel consumption or gas emission.

This embodiment according to the in 10 described working process, with electrically operated compressor 2 , Incinerator 12 as well as power turbine 9 offers the advantage that in contrast to conventional gas turbine cycles two energy sources are combined in an advantageous manner in a thermal process. This combination according to the invention is advantageous, above all, in operational mode, since the provision of useful power can be adapted to the operating state at any given time to maximize consumption. 11 schematically shows a further preferred embodiment of the vehicle engine 1 , essentially according to the 1 , where runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b in particular cohesively connected. Next, the vehicle engine 1 on: the control device 13 , the energy supply device 7 , the outlet nozzle 14 ,

In this embodiment, the bladed rotors 3 . 3a . 3b be operated with different angular velocities and different directions of rotation.

12 schematically shows a further preferred embodiment of the vehicle engine 1 , essentially according to the 2 , where runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b , in particular cohesively, are connected. Next, the vehicle engine 1 on: the control device 13 , the energy supply device 7 , the outlet nozzle 14 , the incinerator 12 ,

In this embodiment, the bladed rotors 3 . 3a . 3b , be operated with different angular velocities and / or different directions of rotation. In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. With the combustion device 12 can the vehicle engine 1 provide a higher thrust. By means of different fuel flows, the thrust can be influenced.

13 schematically shows a further preferred embodiment of the vehicle engine 1 , essentially according to the 3 , where runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b , in particular cohesively, are connected. Next, the vehicle engine 1 on: the control device 13 , the energy supply device 7 , the outlet nozzle 14 , the incinerator 12 , the power turbine 9 ,

In this embodiment, the bladed rotors 3 . 3a . 3b be operated with different angular velocities and / or different directions of rotation. In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. With the combustion device 12 can the vehicle engine 1 provide a higher thrust. By means of different fuel flows, the thrust can be influenced.

In particular, via a gear and a shaft which can the working fluid flow 4 by means of the power turbine 9 taken power supplied to a consumer, in particular a propulsion generator and / or buoyancy generator, not shown, in particular a propeller or a drive wheel.

14 schematically shows a further preferred embodiment of the vehicle engine 1 , essentially according to the 5 , where runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b , in particular cohesively, are connected. Next, the vehicle engine 1 on: the control device 13 , the energy supply device 7 , the outlet nozzle 14 , the incinerator 12 , the power turbine 9 ,

In this embodiment, the bladed rotors 3 . 3a . 3b be operated with different angular velocities and / or different directions of rotation. In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. With the combustion device 12 can the vehicle engine 1 provide a higher thrust. By means of different fuel flows, the thrust can be influenced.

Over several transmissions 22 and waves can be the the working fluid flow 4 , by means of the power turbine 9 , Power taken from the propulsion generator 8th , trained here as a so-called fan, fed.

15 schematically shows a further preferred embodiment of the vehicle engine 1 , with combustion device 12 , with power turbine 9 , with a turbine-driven compressor, in particular medium-pressure compressor, 19 passing through the power turbine 9 is driven and which is driven by the electric machine assembly compressor 2 upstream, being runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b of the electric machine assembly 5 driven compressor 2 , in particular cohesively, are connected.

The by the electric machine arrangement 5 driven compressors 2 is designed here in particular as a high pressure compressor.

In this embodiment, the bladed rotors 3 . 3a . 3b , be operated with different angular velocities and / or different directions of rotation. In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. By means of different fuel flows, the thrust can be influenced.

About a gearbox 22 and a wave 21 can the the working fluid flow 4 by means of the power turbine 9 taken power supplied to a consumer, in particular a propulsion generator and / or buoyancy generator, not shown, in particular a propeller, fan or a drive wheel.

This preferred embodiment substantially corresponds to the third preferred embodiment of the vehicle engine 1 , In this preferred embodiment, the power turbine 9 both the independent medium pressure compressor 19 as well as drive a consumer. This preferred embodiment provides the advantage of a reduced power requirement for operating the electric machine assembly. This preferred embodiment has the advantage that the power supply device needs to provide less power.

16 schematically shows a further preferred embodiment of the vehicle engine 1 , with combustion device 12 , with power turbine 9 , with a turbine-driven compressor, in particular high-pressure compressor, 19 passing through the power turbine 9 driven and by the electric machine assembly 5 driven compressor 2 is downstream, with runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b of the electric machine assembly 5 driven compressor 2 , in particular cohesively, are connected.

In this embodiment, the bladed rotors 3 . 3a . 3b be operated with different angular velocities and / or different directions of rotation. In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. By means of different fuel flows, the thrust can be influenced.

About a gearbox 22 and a wave 21 can the the working fluid flow 4 by means of the power turbine 9 taken power supplied to a consumer, in particular a propulsion generator and / or buoyancy generator, not shown, in particular a propeller, fan or a drive wheel.

The by the electric machine arrangement 5 driven compressors 2 is designed here as a medium pressure compressor.

This preferred embodiment substantially corresponds to the third preferred embodiment of the vehicle engine 1 , In this preferred embodiment, the power turbine 9 both the independent high pressure compressor 19 as well as drive a consumer. This preferred embodiment provides the advantage of a reduced power requirement for operating the electric machine assembly 5 , This preferred embodiment has the advantage that the power supply device 7 less power needs to be provided.

17 schematically shows a further preferred embodiment of the vehicle engine 1 , which compared to the embodiment according to 16 around an independent turbine 20 , in particular high-speed high-pressure turbine, is added. This independent turbine 20 is the power turbine 9 upstream. Notwithstanding the embodiment according to 16 drives the independent turbine 20 , instead of the power turbine 9 , the independent compressor 19 , in particular high-pressure compressor, via a shaft.

This preferred embodiment substantially corresponds to the third preferred embodiment of the vehicle engine 1 , In this preferred embodiment, the power turbine 9 driving a consumer. In this preferred embodiment, the independent turbine 20 the independent compressor 19 drive. This preferred embodiment offers the advantage of a reduced energy requirement for operating the electric machine arrangement 5 , This preferred embodiment has the advantage that the power supply device 5 less power needs to be provided.

18 schematically shows a further preferred embodiment of the vehicle engine 1 , According to the fourth preferred embodiment of the vehicle engine 1 ,

A first working fluid stream 4 flows through the independent compressor 19 , the incinerator 12 , the independent turbine 20 , the power turbine 9 and the outlet nozzle 14a , The independent compressor 19 and the independent turbine 20 are connected by a wave. The power turbine 9 is configured, the first working fluid flow 4 To take performance and a consumer, not shown on the transmission 22 and the wave 21 supply. Hereinafter, this arrangement will be referred to as a main engine.

A second working fluid stream 4a flows through the by the electric machine assembly 5 driven compressor 2 and the outlet nozzle 14 , The second working fluid stream 4a is used to cool the combustion device 12 , the independent turbine 20 , the power turbine 9 and / or for cooling or ventilating a cabin of the vehicle for the passengers.

In this preferred embodiment, the provision may be a cooling flow, that is the second working fluid flow 4a , be made more efficient by the component efficiencies of the by the electric machine assembly 5 driven compressor 2 and the electric machine assembly 5 even improved over the prior art. By not providing the cooling flow through the main engine, its utility-specific power consumption is reduced.

19 schematically shows a further preferred embodiment of the vehicle engine 1 , essentially according to the 14 , where runners of the electric machines 6 . 6a . 6b with the bladed rotors 3 . 3a . 3b , in particular cohesively, are connected. Next, the vehicle engine 1 on: the outlet nozzle 14 , the incinerator 12 , the power turbine 9 , And the control device and power supply device, not shown 7 ,

In this embodiment, the bladed rotors 3 . 3a . 3b be operated with different angular velocities and / or different directions of rotation. Preferably, the direction of rotation of the bladed rotor 3a opposite to those of the bladed rotors 3 . 3b , In this embodiment, the working fluid flow 4 through the incinerator 12 Power to be supplied. By means of different fuel flows, the thrust of the vehicle engine 1 to be influenced.

The working fluid flow 4 by means of the power turbine 9 taken power can the propulsion generator 8th , trained here as a so-called fan, about the wave 21 and the planetary gear 22 be supplied. This propulsion generator 8th also gets from the working fluid stream 4 flows through and is the compressor 2 upstream. Following the propulsion generator 8th becomes the working fluid flow 4 divided into the sheath flow and the core flow. The core stream flows through the means of the electric machine assembly 5 driven compressor 2 , the incinerator 12 , the power turbine 9 and the outlet nozzle 14 ,

LIST OF REFERENCE NUMBERS

1

Vehicle engine

2

compressor

3, 3a, 3b

Rotor of a compressor stage

4

Working fluid stream

5

Electric machine arrangement

6

Electric machine of the electric machine assembly

7

Power supply means

8th

Propulsion generator or buoyancy generator

9

power turbine

10, 10a, 10b

compressor stage

11

Stator of a compressor stage

12

incinerator

13

Control device of the power supply device

14

exhaust nozzle

16

Rotor of an electric machine of the electric machine assembly

17

Stator of an electric machine of the electric machine assembly

19

independent, turbine-driven compressor

20

independent turbine

21

wave

22

transmission device

Claims (10)

Vehicle engine ( 1 ), in particular an aircraft engine, with a compressor ( 2 ), with at least one compressor stage ( 10 ), the compressor ( 2 ), a working fluid stream ( 4 ) at least temporarily supply power and in particular to compress An electric machine arrangement ( 5 ) with at least one electric machine ( 6 ), which for, in particular direct, in particular mechanical, in particular temporary exclusive, driving the compressor ( 2 ), • a, in particular rechargeable, electrical energy supply device ( 7 ), designed for, in particular temporary exclusive, electrical power supply of the electrical machine assembly ( 5 ). Vehicle engine ( 1 ) according to claim 1, with vehicle engine ( 1 ) according to one of the preceding claims, with a combustion device ( 12 ), which • the compressor ( 2 ), in particular directly downstream of, • for burning a, in particular temporally variable, fuel flow [kg / s] is configured, • of at least part of the working fluid stream ( 4 ) is flowed through, • is configured, this working fluid flow ( 4 ), at least temporarily, in particular thermal, to supply power, in particular by burning this fuel flow. Vehicle engine ( 1 ) according to one of the preceding claims, with a power turbine ( 9 ) with at least one turbine stage ( 10 ), wherein the power turbine ( 9 ), the working fluid flow ( 4 ) at least temporarily take power, the power turbine ( 9 ) is configured, at least temporarily, in particular mechanical, to provide power to a shaft, wherein the power turbine ( 9 ) is mechanically decoupled from the at least one compressor ( 2 ). Vehicle engine ( 1 ) according to one of the preceding claims, with • a propulsion generator and / or buoyancy generator ( 8th ), whereby this mechanically with the power turbine ( 9 ) and is configured to provide, at least at times, a thrust force F _s [N]. Vehicle engine ( 1 ) according to one of the preceding claims, wherein the at least one electric machine ( 6 ) a runner ( 16 ) and a stator ( 17 ), wherein the runner ( 16 ), in particular non-positively and / or positively, with a bladed rotor one of the compressor stages ( 10 ) is connected, in particular integrally formed with the bladed rotor. Vehicle engine ( 1 ) according to one of the preceding claims, wherein the compressor ( 2 ) several of these compressor stages ( 10 ), wherein • the bladed rotors ( 3 . 3a . 3b ) of at least one, preferably several, of these compressor stages ( 10 ), are connectable to each other in such a way that these rotors ( 3 . 3a . 3b ) by the same electric machine ( 6 ) or • the bladed rotors ( 3 . 3a . 3b ) of a first group of compressor stages ( 10 ), each having a bladed rotor but no stator, are connectable to each other such that these rotors ( 3 . 3a . 3b ) by a first of these electric machines ( 6 ) and the bladed rotors ( 3 . 3a . 3b ) of a second group of compressor stages ( 10 ), each having a bladed rotor but no stator, are connectable to each other such that these rotors ( 3 . 3a . 3b ) by a second of these electric machines ( 6a ), wherein preferably a compressor stage of the first group is arranged adjacent to a compressor stage of the second group, and wherein preferably the rotors ( 3 . 3a . 3b ) of the first group in opposition to the rotors ( 3 . 3a . 3b ) of the second group, or • the bladed rotors ( 3 . 3a . 3b ) of at least one, preferably several, of these compressor stages ( 10 ) by at least one of these electrical machines ( 6 . 6a ), in particular at different rotational speeds, or • the bladed rotors ( 3 . 3a . 3b ) of at least two of these compressor stages ( 10 ), each having a bladed rotor but no stator, which are adjacent to each other, each by one of these electric machines ( 6 . 6a ), in particular in opposite directions, can be driven, wherein preferably the runner ( 16 ) at least one of these electrical machines ( 6 . 6a ) with one of these bladed rotors ( 3 . 3a . 3b ), in particular non-positively and / or cohesively, is connectable. Vehicle engine ( 1 ) according to one of the preceding claims, wherein the energy supply device ( 7 ) is designed as a rechargeable battery. Vehicle engine ( 1 ) according to one of claims 2 to 7, which is characterized by A first operating state in which the combustion device ( 12 ) supplied substantially no fuel flow and the electric machine assembly ( 5 ) at the same time a predetermined electric power P _{el is} supplied, wherein the vehicle engine ( 1 ) emits substantially no exhaust gases, at least one second operating state in which the combustion device ( 12 ) supplied at least a predetermined one of these fuel streams and the electric machine arrangement ( 5 ) at the same time a predetermined electric power P _{el is} supplied, wherein the vehicle engine ( 1 ) can provide a higher thrust force than in the first operating state, wherein in particular the vehicle engine ( 1 ) is convertible reversibly from the first operating state to the second operating state. Vehicle with at least one vehicle engine ( 1 ) according to one of the preceding claims, wherein in particular the at least one vehicle engine ( 1 ) is convertible from the first operating state to the second operating state, in particular for providing a predetermined thrust. Method for operating a vehicle engine ( 1 ) according to one of claims 2 to 7, wherein at least at times S1 of the electric machine arrangement ( 5 ) is supplied to a predetermined electric power P _el and the combustion device ( 12 ) at the same time substantially no fuel flow is supplied, wherein the vehicle engine ( 1 ) emits substantially no exhaust gases, or S2 of the electric machine arrangement ( 5 ) is supplied to a predetermined electric power P _el and the combustion device ( 12 ) at the same time a predetermined one of these fuel flows is supplied, wherein the vehicle engine ( 1 ) can at least temporarily provide a higher thrust force than during S1.

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