Control system for hybrid vehicles

Abstract

Ensure sufficient power for scavenging operation. [Solution] The hybrid vehicle 500 includes an internal combustion engine 10 that uses hydrogen as fuel, a battery 250, and a first MG 310 that motorizes the internal combustion engine 10 using power supplied from the battery 250. The control device 100 has a processing circuit 110. The processing circuit 110 performs a determination process to determine whether or not there is a request for scavenging operation, in which motoring is performed with fuel injection of the internal combustion engine 10 stopped, and if the determination process determines that there is a request for scavenging operation, it performs a suppression process to suppress the decrease in the amount of charge stored in the battery 250.

Description

Technical Field

[0001] The present invention relates to a control device for a hybrid vehicle.

Background Art

[0002] For example, the hybrid vehicle of Patent Document 1 includes an electric motor that performs motoring of an internal combustion engine by power supply from a battery. When a predetermined condition is satisfied when the engine stops, this hybrid vehicle performs scavenging operation. The scavenging operation is an operation in which motoring of the internal combustion engine is performed with fuel injection stopped. When the scavenging operation is performed, moisture in the combustion chamber is removed. Therefore, it is possible to suppress a decrease in subsequent engine startability due to moisture adhering to the spark plug during engine stop.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Power is required for the scavenging operation by motoring. Therefore, when the power storage amount of the battery is low, it may not be possible to sufficiently secure the power required for the scavenging operation, and there is a possibility that scavenging cannot be sufficiently performed.

Means for Solving the Problems

[0005] The control device for a hybrid vehicle that solves the above problems is applied to a hybrid vehicle comprising a hydrogen-fueled internal combustion engine, a battery, and an electric motor that motorizes the internal combustion engine using power supplied from the battery. This control device has a processing circuit. The processing circuit performs a determination process to determine whether there is a request for scavenging operation, in which the motor is performed with fuel injection of the internal combustion engine stopped, and a suppression process if the determination process determines that there is a request for scavenging operation. The suppression process is a process that suppresses the decrease in the amount of charge stored in the battery compared to when the suppression process is not performed. [Effects of the Invention]

[0006] The control system in this hybrid vehicle can secure the power necessary for scavenging. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram showing the configuration of a vehicle in one embodiment. [Figure 2] Figure 2 shows the HV driving range and EV driving range in the same embodiment. [Figure 3] Figure 3 is a flowchart showing the processing steps performed by the processing circuit of this embodiment. [Figure 4] Figure 4 is a graph showing the relationship between the required power and the target charge rate in the same embodiment. [Figure 5] Figure 5 is a graph showing the relationship between required power and regenerative torque in the same embodiment. [Figure 6] Figure 6 is a graph showing the relationship between the required power and the upper limit of the external power supply in the same embodiment. [Figure 7] Figure 7 is a flowchart showing the processing steps performed by the processing circuit of this embodiment. [Modes for carrying out the invention]

[0008] The following describes one embodiment of a control system for a hybrid vehicle. <Vehicle Configuration> As shown in Figure 1, the hybrid vehicle 500 is equipped with an internal combustion engine 10 and an electric motor, which are its power sources. Hereafter, the hybrid vehicle 500 will be referred to as vehicle 500. The internal combustion engine 10 is an internal combustion engine that uses hydrogen as fuel.

[0009] The crankshaft 18 of the internal combustion engine 10 is mechanically connected to the carrier C of the planetary gear mechanism 350 that constitutes the power split device. The sun gear S of the planetary gear mechanism 350 is mechanically connected to the rotating shaft 310a of the first motor generator (hereinafter referred to as the first MG) 310.

[0010] Furthermore, the ring gear R of the planetary gear mechanism 350 is mechanically connected to the rotating shaft 320a of the second motor generator (hereinafter referred to as the second MG) 320 and the drive wheel 360. The first MG310 functions as a generator that generates electricity using engine output, and also functions as a starting starter that cranks the crankshaft 18 when starting the internal combustion engine 10. The first MG320 is an electric motor that motorizes the internal combustion engine 10 by applying torque to the crankshaft 18.

[0011] The second MG320 functions as an electric motor that generates driving force for the drive wheels 360, and also functions as a generator that generates electricity through regeneration when the vehicle 500 is decelerating. The first MG310 and the second MG320 exchange power with the battery 250 via the PCU (Power Control Unit) 200. The battery 250 is charged using the output of the internal combustion engine 10 and also supplies power to the first MG310 and the second MG320. The PCU 200 is equipped with a converter that boosts the DC voltage input from the battery 250 and outputs it, and an inverter that converts the DC voltage boosted by the converter into AC voltage and outputs it to each MG310 and 320. The PCU 200 is also connected to an external power supply terminal 300 that supplies power from the battery 250 to equipment outside the vehicle. Examples of external power supply include supplying power to power supply equipment installed in homes or shops.

[0012] <About the control device> The control device 100 controls the output and exhaust characteristics of the internal combustion engine 10 by controlling the intake air volume, fuel injection volume, and ignition timing. The control device 100 also operates the inverter via the PCU 200 to control the torque of the first MG 310. Furthermore, the control device 100 also operates the inverter via the PCU 200 to control the torque of the second MG 320.

[0013] The control device 100 includes a processing circuit 110. The processing circuit 110 includes a CPU that performs various processes according to a program, and a ROM in which various programs are stored.

[0014] The control device 100 refers to the detection values of various sensors. For example, the control device 100 refers to the detection value of an air flow meter 51 that detects the intake air amount GA of the internal combustion engine 10. The control device 100 refers to the detection signal Scr of a crank angle sensor 52 that detects the rotation angle of the crankshaft 18. The control device 100 refers to the detection value of a water temperature sensor 53 that detects the cooling water temperature THW, which is the temperature of the cooling water of the internal combustion engine 10. The control device 100 refers to the detection value of an intake air temperature sensor 54 that detects the intake air temperature THA, which is the temperature of the intake air of the internal combustion engine 10. The control device 100 refers to the detection signal of an accelerator position sensor 55 that detects the accelerator operation amount ACCP, which is the operation amount of an accelerator pedal operated by the driver of the vehicle 500. The control device 100 refers to the detection signal of a speed sensor 56 that detects the vehicle speed SP of the vehicle 500. The control device 100 refers to the output signal Sm1 of a first rotation angle sensor 330 that detects the rotation angle of the first MG3 10 and the output signal Sm2 of a second rotation angle sensor 340 that detects the rotation angle of the second MG3 20. The control device 100 refers to the charging rate of the battery 250 calculated by the PCU 200.

[0015] The control device 100 calculates the engine rotational speed NE based on the detection signal Scr of the crank angle sensor 52. Further, the control device 100 calculates the engine load factor KL based on the engine rotational speed NE and the intake air amount GA. The engine load factor KL represents the ratio of the current cylinder intake air amount to the cylinder intake air amount when the internal combustion engine 10 is in a steady operation in a full load state at the current engine rotational speed NE. The cylinder intake air amount is the amount of air flowing into each cylinder in the intake stroke.

[0016] The control device 100 calculates the required drive torque Tr required for the running of the vehicle 500 based on the accelerator operation amount ACCP and the vehicle speed SP. Then, the control device 100 controls the torque of the internal combustion engine 10 and the torques of the first MG3 10 and the second MG3 20 so as to satisfy the required drive torque Tr.

[0017] As shown in FIG. 2, in the driving region where the operating point indicated by the required driving torque Tr and the vehicle speed SP is above the boundary line indicated by the solid line L1, HV driving is performed to drive the vehicle using the torque of the internal combustion engine 10, the torque of the first MG3 10, and the torque of the second MG3 20.

[0018] On the other hand, in the driving region where the operating point indicated by the required driving torque Tr and the vehicle speed SP is below the boundary line indicated by the solid line L1, driving using only the motor is performed. That is, EV driving is performed to drive the vehicle using only the torque of the second MG3 20. During this EV driving, combustion in the internal combustion engine 10 is stopped.

[0019] The control device 100 adjusts the electric power supplied from the second MG3 20 to the battery 250 by controlling the regeneration torque Treg of the second MG3 20 when the vehicle 500 decelerates.

[0020] Further, when performing external power supply to supply electric power to equipment outside the vehicle, the control device 100 limits the supply power so that the electric power supplied from the battery 250 to the outside of the vehicle via the terminal 300 does not exceed the upper limit value WLM. When performing external power supply, when the charge rate of the battery 250 becomes less than or equal to a predetermined threshold value, the internal combustion engine 10 is started and power generation is performed by the first MG3 10 to charge the battery 250. Then, when the charging of the battery 250 is completed, the operation of the internal combustion engine 10 is stopped and the charging of the battery 250 is aborted.

[0021] <Scavenging operation> The internal combustion engine 10 uses hydrogen as fuel. Therefore, compared to an engine using gasoline or the like, moisture derived from the fuel is likely to occur in the combustion chamber. If such moisture adheres to the spark plug of the internal combustion engine 10 during engine stoppage, the engine starting performance may deteriorate.

[0022] Therefore, the control device 100 performs a scavenging operation to remove moisture from the combustion chamber. The scavenging operation is an operation in which the internal combustion engine 10 is motored with fuel injection stopped. The motoring of the internal combustion engine 10 is performed by driving the first MG310, which is powered by the battery 250. The scavenging operation is performed when a scavenging request is made when the vehicle 500 is stopped and the operation of the internal combustion engine 10 has stopped. The scavenging operation is also performed when a scavenging request is made when the operation of the internal combustion engine 10 has stopped while external power is being supplied from the vehicle 500.

[0023] <Suppression treatment> When performing scavenging by motoring, it is necessary to drive the first MG310, and therefore electricity is required. Consequently, if the charge level of the battery 250 that supplies power to the first MG310 is low, it may not be possible to secure enough power for scavenging, and scavenging may not be performed adequately.

[0024] Therefore, the control device 100 performs suppression processing to prevent a decrease in the amount of charge stored in the battery 250. Figure 3 shows the processing procedure for executing the suppression process. This process is performed by the processing circuit 110 of the control device 100 at predetermined execution cycles. In the following, the step number of each process is represented by a number preceded by "S".

[0025] In the series of processes shown in Figure 3, the processing circuit 110 first performs a determination process to determine whether or not there is a request for the scavenging operation described above (S100). In the process of S100, the processing circuit 110 determines that there is a request for scavenging operation if the amount of moisture in the combustion chamber of the internal combustion engine 10 is above a specified threshold. The amount of moisture in the combustion chamber is calculated by the processing circuit 110 in another process. For example, the processing circuit 110 calculates the amount of moisture in the combustion chamber based on physical quantities and model equations that correlate with the amount of moisture in the combustion chamber. Examples of physical quantities that correlate with the amount of moisture in the combustion chamber include engine rotational speed NE, coolant temperature THW, intake air temperature THA, air-fuel ratio of the mixture, combustion temperature of the mixture, fuel injection amount, fuel temperature, and intake manifold wall temperature. The amount of moisture may also be detected using a sensor.

[0026] In the process of S100, if it is determined that a scavenging operation is required (S100: YES), the processing circuit 110 performs a power calculation process to calculate the required power Wr (S110). The required power Wr is the power required to perform the scavenging operation. For example, the processing circuit 110 calculates the required power Wr such that the value of the required power Wr increases as the amount of moisture in the combustion chamber is greater.

[0027] Next, the processing circuit 110 performs a suppression process (S120). The suppression process is a process that suppresses the decrease in the amount of charge stored in the battery 250 compared to when the suppression process is not performed. The suppression process of this embodiment includes the following processes (a) to (d).

[0028] (a) The target charge rate SOCt, which is the target value of the charge rate of battery 250, is increased compared to when the suppression process is not performed. As shown in Figure 4, when the required power Wr is high, the processing circuit 110 performs a process to increase the target charge rate SOCt compared to when the required power Wr is low. Then, the processing circuit 110 controls the charge and discharge rates of the battery 250 so that the target charge rate SOCt is obtained.

[0029] (b) Compared to when the suppression process is not performed, the regenerative torque Treg is increased when the vehicle 500 decelerates. As shown in Figure 5, the processing circuit 110 increases the regenerative torque Treg when the required power Wr is high compared to when the required power Wr is low. The processing circuit 110 then controls the amount of power generated by the second MG 320 so that the regenerative torque Treg is obtained when the vehicle 500 decelerates.

[0030] (c): Compared to when the suppression process is not performed, the upper limit WLM of power supplied from battery 250 to the outside of the vehicle is reduced. As shown in Figure 6, when the required power Wr is high, the processing circuit 110 performs a process to reduce the upper limit WLM compared to when the required power Wr is low. Then, while external power supply is in operation, the processing circuit 110 controls the power supplied to the outside of the vehicle so as not to exceed the upper limit WLM.

[0031] (d): Compared to when the suppression process is not performed, the operating range in which the vehicle 500 runs solely on the motor is narrowed. In other words, the operating range for EV driving is reduced compared to when the suppression process is not performed.

[0032] The dashed line L2 in Figure 2 indicates the boundary of the operating region when the required power Wr is low, and the dashed line L3 indicates the boundary of the operating region when the required power Wr is high. As shown in Figure 2, when the required power Wr is high, the processing circuit 110 performs a process that narrows the operating region in which EV driving (driving using only the motor) is performed compared to when the required power Wr is low. Then, according to the operating region thus changed, the processing circuit 110 switches between HV driving and EV driving of the vehicle 500.

[0033] After executing the process in S120, the processing circuit 110 then executes the process of setting the scavenging flag F to "ON" (S130). Then, if the processing circuit 110 completes the process in S130, or if it makes a negative determination in the process in S100, it terminates this process.

[0034] Figure 7 shows the processing procedure executed by the control device 100. This procedure is performed by the processing circuit 110 of the control device 100 at predetermined execution cycles. In the series of processes shown in Figure 7, the processing circuit 110 first determines whether the scavenging flag F is "ON" or not (S200).

[0035] In the process of S200, if the scavenging flag F is determined to be "ON" (S200:YES), the processing circuit 110 determines whether or not the internal combustion engine 10 has stopped (S210). In the process of S210, an engine stop determined to be positive is either an engine stop due to the vehicle 500 being stopped, or an engine stop during the operation of an external power supply.

[0036] If it is determined that the engine has stopped (S210: YES), the processing circuit 110 performs the scavenging operation described above (S220). When the scavenging operation is performed, the processing circuit 110 sets the scavenging flag F to "OFF".

[0037] Then, if the processing circuit 110 completes the processing in S220, or if it makes a negative determination in the processing of S200, it terminates this process. <Operation of this embodiment> The vehicle 500 is equipped with a hydrogen-fueled internal combustion engine 10, a battery 250, and a first MG 310 that motorizes the internal combustion engine 10 using power supplied from the battery 250. The control device 100 of this embodiment has a processing circuit 110.

[0038] The processing circuit 110 performs a determination process (S100) to determine whether or not there is a request for scavenging operation, in which motoring is performed with fuel injection of the internal combustion engine 10 stopped. Then, if the processing circuit 110 determines in the determination process that there is a request for scavenging operation, it executes a suppression process (S120). The suppression process is a process that suppresses the decrease in the amount of charge stored in the battery 250 compared to when the suppression process is not executed. Therefore, when there is a request for scavenging operation, the process that suppresses the decrease in the amount of charge stored in the battery 250 is executed.

[0039] <Effects of this embodiment> (1) When a scavenging operation is requested, a suppression process is performed to prevent a decrease in the charge of the battery 250. Therefore, the power necessary for the scavenging operation can be secured.

[0040] (2) As part of the suppression process described above, a process is executed to increase the target charge rate SOCt of the battery 250. Therefore, the decrease in the amount of charge stored in the battery 250 can be suppressed. (3) The processing circuit 110 performs a power calculation process to calculate the required power Wr, which is the power necessary to carry out the scavenging operation (S110). Then, as shown in Figure 4, when the required power Wr is large, the processing circuit 110 increases the target charge rate SOCt compared to when the required power Wr is small. Therefore, when the required power Wr for the scavenging operation is large, the target charge rate SOCt is increased compared to when it is small. As a result, the required power Wr can be appropriately secured.

[0041] (4) As part of the above suppression process, a process is executed to increase the regenerative torque Treg when the vehicle 500 decelerates. When the regenerative torque Treg increases, the charging of the battery 250 by regeneration is promoted. As a result, the decrease in the amount of charge stored in the battery 250 can be suppressed.

[0042] (5) The processing circuit 110 performs a power calculation process to calculate the required power Wr, which is the power necessary to perform the scavenging operation (S110). Then, as shown in Figure 5, when the required power Wr is large, the processing circuit 110 increases the regenerative torque Treg compared to when the required power Wr is small. Therefore, when the required power Wr for the scavenging operation is large, the charging of the battery 250 by regeneration is promoted compared to when it is small. As a result, the required power Wr can be appropriately secured.

[0043] (6) As a suppression process, a process is executed to reduce the upper limit WLM of the power supplied from the battery 250 to the outside of the vehicle. This suppresses the discharge of the battery 250 due to external power supply. As a result, the decrease in the amount of charge stored in the battery 250 can be suppressed.

[0044] (7) The processing circuit 110 performs a power calculation process to calculate the required power Wr, which is the power required to carry out the scavenging operation (S110). Then, as shown in Figure 6, when the required power Wr is large, the processing circuit 110 reduces the upper limit WLM compared to when the required power Wr is small. Therefore, when the required power Wr for the scavenging operation is large, the upper limit WLM is reduced compared to when it is small, so that the required power Wr can be appropriately secured.

[0045] (8) As a suppression process, the vehicle 500 is subjected to a process that narrows the operating range in which it is driven solely by the motor. As a result, the opportunities for EV driving are reduced, thereby suppressing the discharge of the battery 250 due to EV driving. Consequently, the decrease in the amount of charge stored in the battery 250 can be suppressed.

[0046] (9) The processing circuit 110 performs a power calculation process to calculate the required power Wr, which is the power required to perform the scavenging operation (S110). Then, as shown in Figure 2, when the required power Wr is large, the processing circuit 110 narrows the operating range in which the motor runs alone compared to when the required power Wr is small. Therefore, when the required power Wr for the scavenging operation is large, the operating range in which the motor runs alone is narrowed compared to when it is small, so that the required power Wr can be appropriately secured.

[0047] <Example of changes> This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0048] • The target charge rate SOCt is set according to the required power Wr, but when suppression processing is performed, the target charge rate SOCt may be increased by a default value compared to when the suppression processing is not performed. • The regenerative torque Treg is set according to the required power Wr, but when suppression processing is performed, the regenerative torque Treg may be increased by a default value compared to when the suppression processing is not performed.

[0049] • Although an upper limit WLM is set according to the required power Wr, when suppression processing is performed, the upper limit WLM may be reduced by the default value compared to when the suppression processing is not performed. - The operating range in which the vehicle is driven solely by the motor is set according to the required power Wr, but when suppression processing is performed, the operating range may be narrowed by the amount of the predetermined range compared to when the suppression processing is not performed.

[0050] As the suppression process described above, at least one of (a), (b), (c), and (d) may be performed. In this specification, the expression "at least one" means "one or more" of the desired options. For example, if there are two options, the expression "at least one" means "only one option" or "both of the two options." As another example, if there are three or more options, the expression "at least one" means "only one option" or "a combination of two or more arbitrary options."

[0051] The number of motor generators in vehicle 500 can be changed as appropriate. Vehicle 500 was a series-parallel hybrid vehicle, but other types of hybrid vehicles may also be used. For example, a parallel hybrid vehicle may also be used.

[0052] The control device 100 is not limited to one that includes a CPU and memory and performs software processing. For example, the control device 100 may include a dedicated hardware circuit, such as an ASIC, that performs hardware processing for at least a portion of what is processed by software in the above embodiment. That is, the control device 100 may include a processing circuit having any of the following configurations (a) to (c): (a) A processing circuit comprising one or more processing units that perform all of the above processing according to a program, and one or more program storage devices such as ROMs that store the program. (b) A processing circuit comprising one or more processing units and one or more program storage devices that perform a portion of the above processing according to a program, and one or more dedicated hardware circuits that perform the remaining processing. (c) A processing circuit comprising one or more dedicated hardware circuits that perform all of the above processing. The program storage device, i.e., computer-readable medium, includes any available medium that can be accessed by a general-purpose or dedicated computer.

[0053] <Note> The technical concepts that can be understood from the above embodiments and modified examples are described below. [Note 1] A control device for a hybrid vehicle comprising a hydrogen-fueled internal combustion engine, a battery, and an electric motor that motorizes the internal combustion engine by power supplied from the battery, the control device having a processing circuit, the processing circuit performing a determination process to determine whether there is a request for scavenging operation, in which the motor is performed with fuel injection of the internal combustion engine stopped, and a suppression process if the determination process determines that there is a request for scavenging operation, wherein the suppression process is a process that suppresses the decrease in the amount of charge stored in the battery compared to when the suppression process is not performed.

[0054] [Note 2] The control device for a hybrid vehicle according to Note 1, wherein the suppression process includes a process that increases the target value of the battery charge rate compared to when the suppression process is not performed. [Note 3] The control device for a hybrid vehicle as described in Note 2, wherein the processing circuit performs a power calculation process to calculate the required power, which is the power necessary to carry out the scavenging operation, and increases the target value when the required power is large compared to when the required power is small.

[0055] [Note 4] The control device for a hybrid vehicle according to Notes 1 to 3, wherein the suppression process includes a process that narrows the operating range in which the hybrid vehicle is driven solely by the motor compared to when the suppression process is not performed.

[0056] [Note 5] The control device for a hybrid vehicle as described in Note 4, wherein the processing circuit performs a power calculation process to calculate the required power, which is the power necessary to carry out the scavenging operation, and when the required power is large, it narrows the operating range compared to when the required power is small.

[0057] [Note 6] The control device for a hybrid vehicle according to any one of Notes 1 to 5, wherein the suppression process includes a process that increases the regenerative torque when the hybrid vehicle decelerates compared to when the suppression process is not performed.

[0058] [Note 7] The control device for a hybrid vehicle as described in Note 6, wherein the processing circuit performs a power calculation process to calculate the required power, which is the power necessary to carry out the scavenging operation, and increases the regenerative torque when the required power is large compared to when the required power is small.

[0059] [Note 8] The control device for a hybrid vehicle according to any one of Notes 1 to 7, wherein the suppression process includes a process that reduces the upper limit of the power supplied from the battery to the outside of the vehicle compared to when the suppression process is not performed.

[0060] [Note 9] The control device for a hybrid vehicle as described in Note 8, wherein the processing circuit performs a power calculation process to calculate the required power, which is the power necessary to carry out the scavenging operation, and when the required power is large, the upper limit is reduced compared to when the required power is small. [Explanation of Symbols]

[0061] 10... Internal combustion engine 18…Crankshaft 51... Air flow meter 52... Crank angle sensor 53...Water temperature sensor 54…Intake air temperature sensor 55... Accelerator position sensor 56…Speed ​​sensor 100...Control device 110… Processing circuit 200...PCU 250... Battery 300... terminals 310...First Motor Generator 310a... Rotating shaft 320...Second Motor Generator 320a... Rotation axis 330...First rotation angle sensor 340...Second rotation angle sensor 350...Planetary gear mechanism 360... Drive wheels 500...Hybrid vehicles

Claims

1. A control device for a hybrid vehicle comprising a hydrogen-fueled internal combustion engine, a battery, and an electric motor that motorizes the internal combustion engine using power supplied from the battery, It has a processing circuit, The aforementioned processing circuit is A determination process to determine whether there is a request for scavenging operation in which the motoring is performed with the fuel injection of the internal combustion engine stopped, If the determination process determines that there is a request for the scavenging operation, the suppression process is executed. The suppression process is a process that suppresses the decrease in the amount of charge stored in the battery compared to when the suppression process is not performed. Control system for hybrid vehicles.

2. The suppression process includes a process that increases the target value of the battery's charge level compared to when the suppression process is not performed. A control device for a hybrid vehicle according to claim 1.

3. The aforementioned processing circuit is A power calculation process is performed to calculate the required power, which is the power necessary to carry out the aforementioned scavenging operation. When the required power is high, the target value is increased compared to when the required power is low. A control device for a hybrid vehicle according to claim 2.

4. The suppression process includes a process that narrows the operating range in which the hybrid vehicle runs solely on the motor, compared to when the suppression process is not performed. A control device for a hybrid vehicle according to claim 1.

5. The aforementioned processing circuit is A power calculation process is performed to calculate the required power, which is the power necessary to carry out the aforementioned scavenging operation. When the required power is high, the operating range is narrowed compared to when the required power is low. A control device for a hybrid vehicle according to claim 4.

6. The suppression process includes a process that increases the regenerative torque when the hybrid vehicle decelerates compared to when the suppression process is not performed. A control device for a hybrid vehicle according to claim 1.

7. The aforementioned processing circuit is A power calculation process is performed to calculate the required power, which is the power necessary to carry out the aforementioned scavenging operation. When the required power is high, the regenerative torque is increased compared to when the required power is low. The control device for a hybrid vehicle according to claim 6.

8. The aforementioned suppression process includes a process that reduces the upper limit of the power supplied from the battery to the outside of the vehicle compared to when the suppression process is not performed. A control device for a hybrid vehicle according to claim 1.

9. The aforementioned processing circuit is A power calculation process is performed to calculate the required power, which is the power necessary to carry out the aforementioned scavenging operation. When the required power is high, the upper limit is reduced compared to when the required power is low. The control device for a hybrid vehicle according to claim 8.

Images