• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a charging device (1) for an internal combustion engine (10), comprising a compressor (V) electrically driven by an electric motor (M) for charging the internal combustion engine with air via an air supply channel (L) and an electrical energy store (20), which is supplied with electrical energy via a first power generator (30) driven by the internal combustion engine (10), wherein the electric motor (M) is connected by the electrical energy store (20) to the energy supply with electrical energy stored in the energy store in order to drive the compressor (V) regardless of the current operating point on the power curve of the internal combustion engine (10) to drive.
    公开号:CH714943A2
    申请号:CH3002019
    申请日:2019-03-12
    公开日:2019-10-31
    发明作者:Haag Jan-Christoph；Aurahs Lutz；Bartholomä Klaus
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to a device for charging an internal combustion engine, preferably an internal combustion engine in a hybrid drive system. A wide variety of configurations of charging systems are known from the prior art. DE 10 2016 107 870 A1, for example, discloses a method for operating an internal combustion engine with at least one high-pressure exhaust gas turbine with a variable turbine geometry and a high-pressure compressor, and at least one low-pressure exhaust turbine with variable turbine geometry and a low-pressure compressor with a low-pressure exhaust gas turbocharger.
    [0003] WO 2016 074 752 A relates to a supercharger device for an internal combustion engine, with a compressor which conveys fluid from a suction side towards a pressure side and compresses from a first pressure on the suction side to a second pressure on the pressure side. It is provided that a bypass line is provided in a housing of the charger device between the pressure side and the suction side, in which there is a suction jet pump with a vacuum connection.
    Such supercharged internal combustion engines via an exhaust gas turbocharger or exhaust gas compressor generally have the disadvantage that, owing to the system, the exhaust gas turbocharger leads to a more or less pronounced power offset or power hole at the beginning with an increase in the power of the internal combustion engine (for example when accelerating one Drive motor) comes.
    However, a condition is desirable in which the compressor immediately charges the internal combustion engine when accelerating in order to avoid this initial power hole or the power offset.
    The present invention is therefore based on the object to overcome the aforementioned disadvantages and to provide a charging device for an internal combustion engine, which has an improved operating behavior, in particular when the load is switched on and also at different operating points of the engine, an efficient air supply and accordingly immediate charging of the internal combustion engine guaranteed.
    A first basic idea of the invention is to ensure a faster provision of air when the load is switched on, regardless of the operating point of the internal combustion engine and its current load state, thus regardless of the exhaust gas flow just generated, the required charging takes place via an electrically driven compressor. A second aspect of the invention relates to the energy supply of the electrical drive of the compressor, which is also carried out independently of the load from the current operating state, by providing an energy buffer from which the electrical energy required for the electric motor is obtained, even if the internal combustion engine is quasi accelerated from standstill ,
    According to the invention, a charging device for an internal combustion engine, which has a variable power curve, is proposed, the charging device having a compressor electrically driven by an electric motor for charging the internal combustion engine with air via an air supply channel, and an electrical energy store via an internal combustion engine driven (or drivable) first power generator is supplied with electrical energy, the electric motor being connected from the electrical energy store for energy supply to electrical energy stored in the energy store in order to drive the compressor independently of the current operating point on the power curve of the internal combustion engine.
    It is preferred if the first power generator is a generator which is driven by a mechanical output of the internal combustion engine. As a result, the energy taken from the energy store can be recharged again, so that the energy store has always stored enough energy to supply the electric motor of the compressor with energy.
    It is further advantageous if, in addition, a second power generator is provided, which is indirectly connected via a mechanical coupling to a mechanical device which can be driven by the exhaust gas stream for energy generation by means of an exhaust gas stream of the internal combustion engine. It is particularly advantageous if the second power generator is also a generator.
    In a preferred embodiment of the invention it can be provided that the first generator is designed as a shaft generator which is connected directly or via a gear stage to the output of the internal combustion engine.
    In a further advantageous embodiment of the invention it is provided that the device which can be driven by the exhaust gas flow of the internal combustion engine is a turbine (for example an exhaust gas turbine) which is connected to the second power generator in such a manner that when the turbine rotates, the second power generator mechanically driven to generate electrical energy and this energy is made available for either the energy storage or alternatively for electrical consumers. For this purpose, a corresponding control can be provided, which controls the energy flow of the electrical energy to those components connected to the power generator.
    CH 714 943 A2 [0013] In a further development of the invention it can further be provided that the turbine can also be connected or connected to the first generator in a drive-effective manner. For example, if the internal combustion engine has a low speed but the exhaust gas flow is present, it can be used to drive the generator.
    It is particularly advantageous if a regulating and control device is also provided, which controls the energy flow as a function of the current operating point of the internal combustion engine and to what extent the first and / or the second power generator reduces the currently generated electrical energy to the electrical one Supply energy storage and the remaining amount of energy of an energy sink or a consumer is thus available for other purposes depending on the engine load. With efficient control, e.g. in an application in a vehicle or a means of transport the conventional alternator for energy supply to the consumer is completely eliminated and the required energy is obtained from the generator of the charging device or the energy store.
    Another aspect of the invention also relates to the system of an internal combustion engine and a charging device as described above, wherein the internal combustion engine is drivingly connected to at least one or a first power generator and / or to the or a second power generator indirectly via intermediate drive components. It is particularly advantageous if the system is a hybrid drive system in which the internal combustion engine is a drive component.
    Other advantageous developments of the invention are characterized in the dependent claims or are shown below together with the description of the preferred embodiment of the invention with reference to the figures.
    [0017] It shows:
    Fig. 1 shows a first embodiment of a charging device according to the invention and
    Fig. 2 shows a second alternative embodiment of a charging device according to the invention.
    The invention is explained in more detail below with reference to FIGS. 1 and 2 using exemplary embodiments. 1 and 2 show two different embodiments of a charging device according to the invention, the same reference numerals indicating the same structural or functional features.
    1 shows a first embodiment of a charging device 1 according to the invention or a system comprising such a charging device 1 with an internal combustion engine 10.
    As can be seen from FIG. 1, the charging device 1 is provided for an internal combustion engine 10. The internal combustion engine 10 here represents an internal combustion engine in a hybrid drive system, the internal combustion engine 10 being able to be operated at different load points, so to speak along its power curve. When the internal combustion engine 10 is in the no-load state, it generates only a small exhaust gas flow A. In the embodiment shown in FIG. 1, however, the exhaust gas flow A is not used to drive a compressor. Rather, the compressor V shown is used to compress air drawn in on the inlet side via a supply channel L and to supply the air for charging the internal combustion engine 10 to the latter.
    The compressor V is not designed here as an exhaust gas turbocharger, but as a compressor V electrically driven by an electric motor M. The electric motor M is connected to an electrical energy store 20 in order to be supplied with electrical energy by the latter.
    Furthermore, a first power generator 30 driven by the internal combustion engine 10 is provided in order to charge the energy store 20.
    Since the electric motor M receives its energy required for driving directly from the electrical energy store 20, it is possible to drive the compressor V independently of the current load or operating point of the internal combustion engine 10 and thus independently of the exhaust gas flow A of the internal combustion engine 10. Thus, even in the lower power range of the internal combustion engine 10 and immediately when the compressor V is accelerating, its full air power can develop, which can only be achieved with a certain power offset by means of an exhaust gas turbocharger.
    In this exemplary embodiment, the first power generator 30 is a shaft generator which is driven via a mechanical output 11, namely via a drive shaft of the internal combustion engine 10.
    In the alternative embodiment of FIG. 2, a second power generator 40, in the present case also a power generator is provided, which is driven indirectly via an exhaust gas turbine T by a mechanical coupling for generating energy by means of an exhaust gas stream A of the internal combustion engine 10. The generator 40 supplies electrical energy to the energy store 20.
    In the exemplary embodiment according to FIG. 2, energy can accordingly be obtained via the first and both the second generator 30, 40 for the energy store 20 for operating the compressor V.
    In this variant, a regulating and control device 50 can also be provided, which controls the energy flow of the generators 30, 40 depending on the current operating point of the internal combustion engine 10. The tax
    CH 714 943 A2 tion works in such a way that it is determined to what extent the first and / or the second generator 30, 40 feed the currently generated electrical energy to the electrical energy store 20 and thus the remaining amount of energy of an energy sink or an external consumer is available depending on the engine load.
    The invention is not limited in its implementation to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types.
    权利要求:
    Claims (10)
    [1]
    claims
    1. charging device (1) for an internal combustion engine (10) with a variable power curve comprising a compressor (V) electrically driven by an electric motor (M) for charging the internal combustion engine with air via an air supply duct (L) and an electrical energy store (20), which is supplied with electrical energy via a first power generator (30) driven by the internal combustion engine (10), the electric motor (M) being connected from the electrical energy store (20) for energy supply to electrical energy stored in the energy store, around the compressor (V) regardless of the current load or operating point on the power curve of the internal combustion engine (10).
    [2]
    2. Charging device (1) according to claim 1, characterized in that the first power generator (30) is a generator which is driven via a mechanical output (11) of the internal combustion engine (10).
    [3]
    3. Charging device (1) according to one of claims 1 or 2, characterized in that a second power generator (40) is also provided, which is used for energy generation by means of an exhaust gas stream (A) of the internal combustion engine (10) indirectly via a mechanical coupling with a mechanical connected by the exhaust gas flow (A).
    [4]
    4. Charging device (1) according to claim 3, characterized in that the second power generator (40) is a generator.
    [5]
    5. Charging device (1) according to claim 2, characterized in that the first generator (30) is designed as a shaft generator which is connected directly or via a gear stage to the output of the internal combustion engine (10).
    [6]
    6. Charging device (1) according to claim 3, 4 or 5, characterized in that the exhaust gas flow (A) of the internal combustion engine (10) drivable device is a turbine (T) which is drivingly connected to the second power generator (40) , in such a way that when the turbine (T) is rotated the second power generator (40) is mechanically driven to generate electrical energy.
    [7]
    7. Charging device according to claim 6, characterized in that the turbine (T) is also drive-operable with the first generator (30) connectable or connected.
    [8]
    8. Charging device (1) according to claim 2 and 3, characterized in that a regulating and control device (50) is provided, which controls depending on the current operating point of the internal combustion engine (10) to what extent the first and / or the second Power generators (30, 40) supply the currently generated electrical energy to the electrical energy store (20) and the remaining amount of energy is available to an energy sink or a consumer depending on the engine load.
    [9]
    A system comprising an internal combustion engine (10) and a charging device (1) according to one of claims 1 to 8, wherein the internal combustion engine (10) is drive-effective with at least one or a first power generator (30) and / or with the or a second power generator (40) ) is indirectly connected via intermediate drive components.
    [10]
    10. The system of claim 9, wherein the system is a hybrid drive system in which the internal combustion engine (20) is one of the drive components.
    CH 714 943 A2

    CH 714 943 A2
    类似技术:
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    同族专利:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018109010.2A|DE102018109010A1|2018-04-17|2018-04-17|Device for charging an internal combustion engine|
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