power output device

Abstract

The present application provides a power output device capable of suppressing deterioration of response performance caused by a filter and suppressing influence of the filter on misfire detection. The power output device includes an internal combustion engine, a rotary electric machine connected to an output shaft of the internal combustion engine, and a control device that controls the rotary electric machine. The control device includes a filter processor in a resonance frequency band and for attenuating torque of the rotary electric machine, and when a change rate of a requested output torque of a requested output is equal to or greater than a predetermined value, or when misfire of the internal combustion engine is detected, the control device performs control of reducing a gain of the filter processor, or turning off the filter processor, or selecting and turning on another filter processor having a different attenuation frequency band from the filter processor.

Description

TECHNICAL FIELD

[0001] The present application relates to a power output device, and particularly to a power output device for a vehicle. BACKGROUND

[0002] In recent years, in all countries, safe cities and human settlements are being strengthened in order to strengthen the capacity for inclusive and sustainable urban development, sustainable human settlements planning and management in all countries. Therefore, in all countries, there is a need to strengthen the provision of safe, affordable, accessible, sustainable transport systems for all, to improve road safety, in particular to expand public transport, to reduce the per capita negative environmental impact of cities, including particular attention to air quality, and urban waste management, etc. In the field of transportation, in the manufacturing industry of vehicles, it is urgently needed to take measures to address environmental problems in order to develop technologies that can improve the rate of improvement of global energy efficiency.

[0003] In the manufacturing industry of vehicles of the related art, there is a control device for a dual-power mobile body (for example, a hybrid vehicle) that can perform cylinder deactivation operation. Generally, the dual-power vehicle is controlled in various ways, such as the drive output of the engine of the hybrid vehicle is assisted by the electric motor at the time of acceleration, and at the time of deceleration, the battery is charged by deceleration recovery, so that the state of charge of the battery can be maintained, and the requirements of the driver are still met. Furthermore, since the engine and the electric motor are in series from the structural point of view, the configuration of the vehicle becomes simple and the weight of the entire system remains low. Therefore, a high degree of freedom can be obtained in the loading device.

[0004] For example, in the related art, there is a control device for a hybrid vehicle and a technology for a hybrid vehicle that performs control for suppressing the influence of the variation in the rotation speed of an engine (i.e., an internal combustion engine). For example, in the related art, there is a control technology for suppressing the variation in the rotation speed of the burst cycle from the internal combustion engine: in the case where the variation in the rotation speed of the internal combustion engine is suppressed by the torque output from the electric motor, the target rotation speed is corrected based on the variation in the rotation speed generated due to the torque (i.e., the torque for suppressing the variation in the rotation speed of the internal combustion engine) applied to the electric motor, and feedback control is performed.

[0005] Conventional electronic control units (ECUs) are used to control the speed of both the internal combustion engine and the electric motor. Separate ECUs are sometimes provided to avoid ECU enlargement, or even if the hardware itself is identical, separate control modules are sometimes provided for controlling the speed of the internal combustion engine and the speed of the electric motor. In these cases, because the ECUs or control modules are independent of each other, there is a risk of deviation from the target speed, response delays, and other issues. This can lead to conflicting control (control interference) between the torque of the internal combustion engine and the torque of the electric motor, preventing proper control. Specifically, this can cause technical issues such as control haunting, excessive increases or decreases in the torque of the internal combustion engine, and mislearning during learning control.

[0006] Furthermore, Patent Document 1 proposes a control technology for suppressing possible vibrations that may occur in a vehicle when an internal combustion engine is started. In the control system provided in Patent Document 1, when the control system controls the internal combustion engine to execute a start command, a starting torque is set to start the internal combustion engine. The starting torque for starting the internal combustion engine is set by filtering a set temporary motor torque using a resonance elimination filter processing unit to eliminate resonance, and the temporary motor torque is set to a torque that is set to a speed that allows the engine to be started at an ignition start speed or higher. Thus, Patent Document 1 suppresses possible vibrations that may occur in the vehicle when the internal combustion engine is started by setting a torque command for the motor by eliminating the frequency component of resonance caused by a damper device (damper) connected between the engine and the motor through a filter, and by canceling the torque output to the drive shaft.

[0007] Furthermore, Patent Document 2 proposes a control technique for a hybrid vehicle having a vibration damping device disposed between an engine and an electric motor. In the control system provided in the hybrid vehicle proposed in Patent Document 2, a damper torque estimation unit estimates damper torque, and a filter is applied to the estimated damper torque to obtain a damper torque target value, thereby obtaining the damper torque target value in real time.

[0008] [Prior art literature]

[0009] [Patent Document]

[0010] [Patent Document 1]: Japanese Patent Application Laid-Open No. 2009-013925

[0011] [Patent Document 2]: Japanese Patent Application Laid-Open No. 2013-107440 Summary of the Invention

[0012] [Problems to be solved by the invention]

[0013] In the related art, by using a band elimination filter, resonance in a power transmission system caused by a response delay of target rotational speeds of an internal combustion engine and a motor, and the like is suppressed, and appropriate control is performed. However, in the related art, since a frequency range equivalent to an eigenvalue at which resonance occurs is cut off in order to avoid the resonance at the eigenvalue, a response can not be made or a response can be poor in the eigenvalue region. Further, in the related art, there is no degree of freedom in configuration of the filter, and a control system cannot be handled when there is a change in the eigenvalue or there are a plurality of eigenvalues. Further, resonance in the power transmission system is suppressed by the filter, and misfire detection performance is affected by the filter, and misfire determination performance is affected. Thus, there is a need for a power output device in which deterioration of response performance caused by the filter is suppressed in response to a sudden change in torque request, and an effect of the filter on misfire detection performance is suppressed.

[0014] In view of the above, an object of the present application is to provide a power output device of a vehicle in which resonance in a power transmission system caused by a response delay of target rotational speeds of an internal combustion engine and a motor, and the like is suppressed, and an effect of a filter on misfire detection performance is suppressed. When a response value of torque is steep due to sudden acceleration or sudden deceleration, by temporarily canceling a filter processing function of the filter or adjusting the filter in a manner in which a gain of the filter is reduced, deterioration of response performance caused by the filter is suppressed, and an effect of the filter on misfire detection performance is suppressed, and thus a problem of resonance in a power transmission system of a vehicle caused by a response delay of target rotational speeds of an internal combustion engine and a motor, and the like, and an effect of a filter on misfire detection performance of the internal combustion engine are improved.

[0015] [Means for solving the problem]

[0016] To achieve the object, the present application is a power output device including an internal combustion engine, a rotary electric machine connected to an output shaft of the internal combustion engine, and a control device that controls the rotary electric machine. The control device includes a filter processor in a resonance frequency band and for attenuating torque of the rotary electric machine, and when a change speed of a requested output torque of a requested output is equal to or greater than a predetermined value, or when misfire of the internal combustion engine is detected, the control device performs control of reducing a gain of the filter processor, or turning off the filter processor, or selecting and turning on another filter processor having a different attenuation frequency band from the filter processor.

[0017] According to the present invention, when a torque response value is steep due to rapid acceleration or deceleration, the filter's filtering function is temporarily disabled or the filter is adjusted to have a lower filter gain, thereby suppressing degradation of the filter-induced response performance and suppressing the filter's influence on misfire detectability.

[0018] Furthermore, in the present invention, when the speed of change of the torque of the rotating motor is within the attenuation band of the filter processor, the control device performs the following control to reduce the gain of the filter processor, or turn off the filter processor, or select and turn on another filter processor with a different attenuation band.

[0019] Furthermore, in the present invention, when misfire of the internal combustion engine is detected and when the speed of the internal combustion engine is within the speed range that affects the misfire detectability of the internal combustion engine, the control device performs the following control to reduce the gain of the filter processor, or turn off the filter processor, or select and turn on the other filter processor having a different attenuation band.

[0020] Furthermore, in the present invention, the power output device is mounted on a vehicle, and the vehicle has a power storage device for supplying power to the rotating motor. When the remaining capacity value of the power storage device is less than or equal to a predetermined power capacity value, the control device turns off the filter processor.

[0021] [Effects of the Invention]

[0022] Based on the above, the power output device of the present invention can suppress resonance in the power transmission system caused by, for example, response delays between the target speeds of the internal combustion engine and the electric motor, and can also suppress the effects of filters on misfire detectability. When the torque response value is steep due to rapid acceleration or deceleration, the filter's filtering function is temporarily disabled or the filter gain is adjusted to a lower level. This suppresses filter-induced degradation in response performance and the effects of the filter on misfire detectability, thereby addressing resonance in the vehicle's power transmission system caused by, for example, response delays between the target speeds of the internal combustion engine and the electric motor, and the effects of filters on the misfire detectability of the internal combustion engine.

[0023] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a block diagram for explaining the structure of a power output device according to one embodiment of the present invention.

[0025] Figure 2 It shows Figure 1 A schematic diagram of a block diagram of the structure of a rotating electrical machine speed control unit.

[0026] Figure 3 It is schematically shown Figure 2 Flowchart of the operation flow of the rotating electrical machine speed control unit.

[0027] [Explanation of Symbols]

[0028] 100: Power take-off

[0029] 102: Internal combustion engine speed control unit

[0030] 103: Fire Detection Department

[0031] 104: Rotating motor speed control unit

[0032] 110: Control device

[0033] 112:ENG-ECU

[0034] 114:MG-ECU

[0035] 120, 120A: Filter processor

[0036] 130: Current command calculation unit

[0037] ENG: Internal combustion engine

[0038] MG: Rotating Motor DETAILED DESCRIPTION

[0039] Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. It should be noted that, in each embodiment described below, the same reference numerals are used for common parts, and repeated descriptions are omitted. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments described below, when numbers, quantities, etc. are mentioned, the scope of the present invention is not necessarily limited to the numbers, quantities, etc., unless otherwise specified. In addition, in the following embodiments, each component is not necessarily essential to the present invention unless otherwise specified. In addition, when there are multiple embodiments below, unless otherwise specified, the characteristic parts of each embodiment that can be appropriately combined are predetermined from the beginning.

[0040] The power output device of the embodiment of the present invention is suitable for a hybrid electric vehicle that uses an internal combustion engine (or other heat engine) and a rotating electric machine (or electric motor) as a driving source, and the hybrid electric vehicle is equipped with a power storage device (battery pack) for supplying electricity to the rotating electric machine. In addition, the hybrid electric vehicle is driven by electricity discharged from a battery such as a secondary battery, a hydrogen fuel cell, a metal fuel cell, or an ethanol fuel cell. In the case of a rotating electric machine, the rotating electric machine uses the generated electricity generated by an engine connected to the internal combustion engine, or the discharged electricity of a power storage device such as a secondary battery or a fuel cell to operate. In this embodiment, a four-wheeled vehicle is taken as an example to illustrate the application of the power output device of the present invention to a hybrid electric vehicle equipped with an internal combustion engine and a rotating electric machine, which are driven in combination with each other in different ways.

[0041] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Hereinafter, a power output device according to this embodiment will be described with reference to the accompanying drawings. Figure 1 It is a schematic diagram of a block diagram for explaining the structure of a power output device according to one embodiment of the present invention.

[0042] like Figure 1 As shown, the power output device 100 of this embodiment is suitable for being mounted on a hybrid vehicle, and the power output device 100 is configured to control the operation of the internal combustion engine ENG and the rotary electric machine MG mounted on the hybrid vehicle, and the rotary electric machine MG is connected to the output shaft of the internal combustion engine ENG. The internal combustion engine ENG, also called an "engine", is a gasoline engine that functions as the main power source of the hybrid vehicle. The rotary electric machine MG is a specific example of an "electric motor", and is an electric generator having a power running function of converting electrical energy into kinetic energy and a regeneration function of converting kinetic energy into electrical energy. In addition, Figure 1 Although the internal combustion engine ENG and the rotary electric machine MG are shown as being directly coupled, any configuration is sufficient as long as torque can be transmitted to each other, and they may be coupled via a planetary gear mechanism or the like, for example.

[0043] The power output device 100 of this embodiment includes a control device 110, which is composed of an electronic control unit (ECU) (i.e., ENG-ECU) 112 for controlling the operation of the internal combustion engine ENG and an electronic control unit (i.e., MG-ECU) 114 for controlling the operation of the rotating electric machine MG. In this embodiment, the ENG-ECU 112 and the MG-ECU 114 are configured as independent ECUs. In other embodiments, the ENG-ECU 112 and the MG-ECU 114 may be configured as a single ECU (i.e., a shared ECU), but the present invention is not limited to this. Therefore, the power output device 100 of this embodiment includes the ENG-ECU 112 for controlling the internal combustion engine ENG and the MG-ECU 114 for controlling the rotating electric machine MG. In other embodiments, the ENG-ECU 112 for controlling the internal combustion engine ENG and the MG-ECU 114 for controlling the rotating electric machine MG may be configured as different control modules within the same ECU.

[0044] The ENG-ECU 112, which controls the internal combustion engine ENG, includes an engine speed control unit 102 that outputs a torque command for bringing the ENG speed closer to a target ENG speed based on the obtained speed of the internal combustion engine ENG (ENG speed). The engine speed control unit 102 brings the engine speed closer to the target speed through, for example, electronic fuel injection (EFI) control. The MG-ECU 114, which controls the rotary electric machine MG, includes a rotary electric machine speed control unit 104 that outputs a current or torque command for bringing the MG speed closer to the target MG speed based on the obtained speed of the rotary electric machine MG (MG speed). In addition to the torque that serves as the power source for the hybrid vehicle, the rotary electric machine speed control unit 104 can also cause the rotary electric machine MG to output torque (hereinafter referred to as "damping torque") for suppressing the effects of fluctuations in the speed of the internal combustion engine ENG. The vibration-damping torque is, for example, torque in opposite phase to the rotational speed fluctuation component of the internal combustion engine ENG, and has the effect of suppressing vibration of the hybrid vehicle caused by the rotational speed fluctuation of the internal combustion engine ENG (for example, vibration corresponding to the resonance frequency of the drive system).

[0045] Figure 2 It shows Figure 1 Please refer to the schematic diagram of the block diagram of the structure of the rotating motor speed control unit. Figure 1 and Figure 2The rotating electrical machine speed control unit 104 of this embodiment includes a filter processor 120 and a current command calculation unit 130 as internally implemented processing modules or hardware. The filter processor 120 acquires an MG speed signal representing temporal fluctuations in the MG speed and performs a predetermined filtering process on the acquired MG speed signal. The filter processor 120 is configured to output the filtered MG speed signal to the current command calculation unit 130. The current command calculation unit 130 outputs a current command signal representing the torque to be output by the rotating electrical machine MG based on the filtered MG torque signal.

[0046] In addition, in this embodiment, the filter processor 120 is, for example, a filter in the resonant frequency band and is used to attenuate the torque of the rotary electric machine MG. In the power output device 100, in addition to the filter processor 120 applicable to the frequency band within the resonant frequency band, a filter processor applicable to the frequency band outside the resonant frequency band may be provided, that is, another filter processor 120A (i.e., Figure 2 The filter processor 120A in FIG, wherein the filter processor 120A and the filter processor 120 have different attenuation frequency bands.

[0047] The control device 110 further includes a misfire detection unit 103 . During operation of the internal combustion engine ENG, the misfire detection unit 103 performs misfire determination of the internal combustion engine based on rotational fluctuations of an ENG speed signal.

[0048] More specific operations of the filter processor 120 and the current command calculation unit 130 will be described below.

[0049] In the present embodiment, for example, a band-stop filter (BSF) that is generally used to suppress resonance caused by a response delay of a target rotational speed of an internal combustion engine and a rotating electric machine and the like in a power transmission system of a vehicle can be used as the filter processor 120, the filter processor 120A, and appropriate control can be performed. However, in general, when a band-stop filter is used, since a frequency range equivalent to a characteristic value at which resonance occurs (for example, in a resonance frequency band) is cut off in order to avoid the resonance, a response can not be made or can be made poorly in the characteristic value region. In addition, a band-stop filter is not configured with a degree of freedom in a general control system, and the general control system cannot deal with a case where a characteristic value changes or a plurality of characteristic values exist. Furthermore, when a band-stop filter is used to suppress resonance in a power transmission system, the misfire detection performance of the internal combustion engine can be affected, and thus the misfire determination performance of the internal combustion engine can be affected. In view of this, in the present embodiment, the rotating electric machine rotational speed control section 104 of the control device 110 controls the filter processor 120 and the filter processor 120A as follows.

[0050] In the present embodiment, in order to suppress deterioration of response performance caused by a filter and suppress an influence of a filter on misfire detection performance, the control device 110 of the power output device 100 performs control as follows. When a change rate of a requested output torque of a requested output is equal to or greater than a predetermined value, or when misfire of the internal combustion engine is detected, the control device performs control to reduce a gain of the filter processor 120, or to turn off the filter processor 120, or to select and turn on another filter processor 120A having a different attenuation frequency band from the filter processor 120. In this way, when a response value of a torque is steep due to sudden acceleration or sudden deceleration, for example, when an ENG rotational speed exceeds a predetermined value or a change rate of an MG rotational speed (that is, an MG torque) exceeds a predetermined value, the filter function is temporarily released by reducing the gain of the filter processor 120 or directly turning off the filter processor 120 or selecting and turning on another filter processor 120A, and thus deterioration of response performance caused by a filter can be suppressed, and an influence of a filter on misfire detection performance can be suppressed, and thus a problem of resonance caused by a response delay of a target rotational speed of an internal combustion engine and a rotating electric machine and the like in a power transmission system of a vehicle and an influence of a filter on misfire detection performance of an internal combustion engine can be improved.

[0051] Figure 3 is a flowchart schematically showing a flow of an operation of the rotating electric machine rotational speed control section of Figure 2 Figures 1 to 3 ​As shown, when the power output device 100 is in operation, the rotating electrical machine speed control unit 104 begins implementing the following control process. First, the misfire detection unit 103 determines whether the internal combustion engine ENG has misfired based on the rotational fluctuations of the ENG speed signal. Specifically, the misfire detection unit 103 determines whether the internal combustion engine ENG has misfired (step S1). If the misfire detection unit 103 does not detect misfire in the internal combustion engine ENG (step S1: No in the figure), the process proceeds to step S2. In step S2, the rotating electrical machine speed control unit 104 determines whether the rate of change of the requested output torque is greater than or equal to a predetermined value. The predetermined value may be a threshold value for the rate of change of torque pre-set in the power transmission system. If the rate of change of the requested output torque is not greater than or equal to (i.e., does not exceed) the predetermined value (step S2: No in the figure), the process ends. Therefore, when the misfire detection step of step S1 does not detect a misfire in the internal combustion engine, and when the change rate of the requested output torque of the requested output of step S2 does not exceed the predetermined value, it is determined that the power output device 100 is in a normal working state, and the subsequent processing is not performed and the processing ends. In addition, when the ENG speed of the internal combustion engine changes for some reason, it will cause vibrations corresponding to the resonant frequency of the drive system. For example, when the change rate of the requested output torque of the requested output changes, the filter processor 120 of the rotating motor speed control unit 104 performs filtering processing at this time, that is, the power output system is within the execution range (BSF execution range) where the band-stop filter works. Therefore, if Figure 3 As shown, when the misfire detection step of step S1 does not detect engine misfire, and when the result of the determination of whether or not the BSF execution range is within the step S2 is negative, the process ends.

[0052] like Figure 3 As shown, when the misfire detection unit 103 detects an internal combustion engine (ENG) misfire (step S1: Yes in the figure), the process proceeds to step S3. In step S3, the engine's ENG speed is detected to determine whether it exceeds a predetermined threshold, that is, whether it is greater than or equal to the predetermined ENG speed. If the engine's ENG speed is not greater than or equal to the predetermined ENG speed (step S3: No in the figure), the process proceeds to step S2. If the engine's ENG speed is greater than or equal to the predetermined ENG speed (step S3: Yes in the figure), the process proceeds to step S4. Regarding step S3, when an engine misfire is detected, the engine's ENG speed may be within a specific speed range that can affect misfire detectability. Therefore, if the determination in step S1 indicates that an engine misfire has been detected, and if the determination in step S3 indicates that the engine's ENG speed is greater than or equal to the predetermined ENG speed, the process proceeds to step S4.

[0053] In step S4, the rotating electrical machine speed control unit 104 controls the following: reducing the gain of the filter processor 120, shutting down the filter processor 120, or selecting and starting another filter processor 120A. Then, the process proceeds to step S5, in which the adjusted filter processing is executed.

[0054] In step S2, if the requested output torque's rate of change is greater than or equal to a predetermined value (step S2: Yes in the figure), the process proceeds to step S6. In step S6, it is determined whether the accelerator opening rate of change exceeds a predetermined threshold, that is, whether the accelerator opening rate of change is greater than or equal to a predetermined accelerator opening rate of change. If the accelerator opening rate of change is greater than or equal to the predetermined accelerator opening rate of change (step S6: Yes in the figure), the process proceeds to step S7. In step S7, it is determined whether the torque change rate of the rotary electric machine MG is within the attenuation band of the filter processor. If the torque change rate of the rotary electric machine MG is within the attenuation band of the filter processor (step S7: Yes in the figure), the process proceeds to step S4, and the processing described in step S4 is executed. In step S6, if the accelerator opening rate of change is not greater than or equal to the predetermined accelerator opening rate of change (step S6: No in the figure), the process proceeds to step S8. In step S8, the filter processor 120 adjusts the gain of the corresponding filtering process and executes the adjusted filtering process. Furthermore, in step S7, if the torque change rate of the rotating electric machine is outside the frequency band of the filter processor's attenuation band (step S7: No in the figure), the process proceeds to step S8 and executes the processing described in step S8. Furthermore, by determining whether the rate of change of the accelerator opening exceeds a predetermined value in step S6 and determining whether the torque change rate of the rotating electric machine is within the frequency band of the attenuation band in step S7, the response of the power output device 100 can be accelerated.

[0055] In addition, the vehicle is equipped with a power storage device, such as a battery pack, for supplying electric power to the rotating electric machine. In the power output device 100 of this embodiment, when the remaining capacity of the power storage device of the rotating electric machine MG is equal to or less than a predetermined power capacity value, the rotating electric machine speed control unit 104 turns off the filter processor.

[0056] Through this control, even if the hardware or parameters affecting the characteristic values ​​are altered, resonance at the characteristic values ​​can be effectively suppressed. Furthermore, this can prevent other functions from being affected. In other words, this control can prevent the impact on misfire detectability and the vehicle's torque response during rapid acceleration and deceleration. In this way, the power output device not only suppresses resonance in the powertrain caused by delays in the target speed response of the internal combustion engine and electric motor, but also mitigates the filter's impact on misfire detectability.

[0057] Because filtering to address resonance caused by delays in the response to the target speeds of the internal combustion engine and electric motor affects the crankshaft angular velocity, a parameter used in misfire detection calculations, the effects of misfire detection can be mitigated by turning the filtering processor on and off, switching to a different filtering processor, or adjusting the filter processor gain during misfire detection.

[0058] Furthermore, when the torque response value is steep due to rapid acceleration or deceleration, that is, when the power output device is suddenly requested to output a significant output torque, and the torque change time falls within the attenuation band of the filtering process, control responsiveness can deteriorate, leading to poor product quality. Therefore, the power output device of the present invention can mitigate the effects of the torque request in such situations by turning the filtering processor on / off, switching to a different filtering processor, or adjusting the filter processor gain.

[0059] In summary, the power output device of the present invention can suppress resonance in the power transmission system caused by, for example, response delays between the target speeds of the internal combustion engine and electric motor, and can also mitigate the effects of filters on misfire detectability. When the torque response value is steep due to rapid acceleration or deceleration, the filter's filtering function is temporarily disabled or the filter gain is adjusted to a lower level. This can suppress degradation in response performance caused by the filter, and can also mitigate the effects of the filter on misfire detectability. This approach, in turn, addresses the issues of resonance in the vehicle's power transmission system caused by, for example, response delays between the target speeds of the internal combustion engine and electric motor, and the effects of filters on the misfire detectability of the internal combustion engine.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power output device, characterized in that: include: internal combustion engine; a rotary electric machine connected to an output shaft of the internal combustion engine; as well as a control device for controlling the rotating motor; The control device includes a filter processor within a resonance frequency band for attenuating the torque of the rotating electric machine, and When the rate of change of the requested output torque is greater than or equal to a predetermined value, or when misfire of the internal combustion engine is detected, the control device performs the following control to reduce the gain of the filter processor, or turn off the filter processor, or select and turn on another filter processor, wherein the other filter processor and the filter processor have different attenuation bands.

2. The power output device according to claim 1, characterized in that: When the speed of change of the torque of the rotating motor is within the attenuation band of the filter processor, the control device performs the following control to reduce the gain of the filter processor, or turn off the filter processor, or select and turn on another filter processor with a different attenuation band.

3. The power output device according to claim 1, characterized in that: When misfire of the internal combustion engine is detected and when the rotational speed of the internal combustion engine is within a rotational speed range that affects the misfire detectability of the internal combustion engine, the control device performs the following control to reduce the gain of the filter processor, or to turn off the filter processor, or to select and turn on another filter processor having a different attenuation band.

4. The power output device according to any one of claims 1 to 3, characterized in that: The power output device is mounted on a vehicle having a power storage device for supplying power to the rotating electric machine. When a remaining capacity value of the power storage device is equal to or less than a predetermined power capacity value, the control device turns off the filter processor.

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