JP2020152339A - Hybrid-vehicular control apparatus - Google Patents

Abstract

To solve the problem of being unable to execute a filter reproduction process for removing particulate materials by incineration and an evaporation process for removing water and/or fuel contained in oil by evaporation in the case of a vehicle traveling in an electric vehicle mode.SOLUTION: In a case in which, under the condition of an electric vehicle mode being executed, at least either of conditions where a dilution quantity of oil stored in an oil pan exceeds a predetermined dilution quantity and where an accumulation amount of particulate materials accumulated in a particulate filter exceeds a predetermined specified accumulation amount is satisfied, information for urging a user to operate a mode changeover switch is issued from a display and speaker of a navigation device.SELECTED DRAWING: Figure 2

Description

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

The hybrid vehicle of Patent Document 1 includes an internal combustion engine as a drive source. A motor generator is driven and connected to the internal combustion engine via a gear mechanism. Further, this hybrid vehicle can travel in a hybrid mode in which the vehicle is driven by the drive of the internal combustion engine, and is in an electric vehicle mode in which the vehicle is driven only by the driving force of the motor generator without the drive of the internal combustion engine. But it is possible to drive.

JP-A-2015-44477

In a vehicle equipped with an internal combustion engine, a particulate filter may be provided in the exhaust path of the exhaust gas discharged by the internal combustion engine. Then, when the accumulated amount of the particulate matter deposited on the particulate filter exceeds a certain value, a filter regeneration process of burning and removing the particulate matter is performed. Further, in a vehicle equipped with an internal combustion engine, an oil pan for storing lubricating oil is provided. Then, when the dilution amount of the oil stored in the oil pan exceeds a certain value, a volatilization treatment is performed to volatilize and remove water and fuel.

Here, the above-mentioned filter regeneration process and volatilization process are processes that can be executed only when the internal combustion engine is being driven. Therefore, in the case of a vehicle that can travel in the electric vehicle mode, such as the hybrid vehicle of Patent Document 1, the vehicle is traveling in the electric vehicle mode even though the filter regeneration process and the volatilization process should be executed. Therefore, these processes may not be executed for a long period of time.

In order to solve the above problems, in the present invention, an internal combustion engine as a drive source, a particulate filter provided in the exhaust path of the exhaust discharged from the internal combustion engine, and oil for lubricating various parts of the internal combustion engine are stored. An oil pan, a motor generator driven and connected to the internal combustion engine, and a mode changeover switch that switches the execution of an electric vehicle mode in which the vehicle is driven only by the driving force of the motor generator according to the user's operation. A control device applied to a hybrid vehicle provided with an information notification unit for notifying information to the information, and the dilution amount calculation unit for calculating the dilution amount of oil stored in the oil pan and the particulate filter. The accumulation amount calculation unit that calculates the accumulation amount of the accumulated particulate matter and the dilution amount calculated by the dilution amount calculation unit under the condition that the electric vehicle mode is executed are the predetermined dilution amounts. When at least one of the conditions that the amount is exceeded and the amount of deposit calculated by the deposit amount calculation unit exceeds a predetermined predetermined deposit amount is satisfied, the information notification unit switches the mode. It is provided with a notification control unit that notifies the user of information for prompting the user to operate the switch.

According to the above configuration, the mode is switched to the user when the oil is excessively diluted or the particulate matter is excessively deposited and the internal combustion engine needs to be driven to eliminate them. It is possible to prompt the operation of the switch. Therefore, the possibility that the vehicle will run with the drive of the internal combustion engine increases, and the filter regeneration process that burns and removes particulate matter and the volatilization process that volatilizes and removes water and fuel contained in oil are executed. There will be more opportunities.

Schematic configuration diagram of the hybrid system. Flowchart of information notification processing.

Hereinafter, embodiments of the hybrid vehicle will be described. First, the configuration of the hybrid vehicle will be described.
As shown in FIG. 1, the hybrid system 10 of a hybrid vehicle includes an internal combustion engine 11 that burns fuel to obtain power. The internal combustion engine 11 is provided with a plurality of cylinders 12. In this embodiment, four cylinders 12 are provided. An intake passage 13 for introducing intake air into the cylinder 12 is connected to the cylinder 12. The downstream side of the intake passage 13 is branched into four according to the number of cylinders 12, and each branched passage is connected to the cylinder 12. Further, a fuel injection valve 14 for supplying fuel into the cylinder 12 is attached to each of the branched passages.

A throttle valve 15 for opening and closing the intake passage 13 is attached to the upstream side of the branch portion in the intake passage 13. The throttle valve 15 is a so-called butterfly valve, and adjusts the amount of intake air supplied to each cylinder 12 by changing the cross-sectional area of the flow path of the intake passage 13. An air flow meter 16 for detecting the intake flow rate GA flowing through the intake passage 13 is attached to the upstream side of the throttle valve 15 in the intake passage 13.

An exhaust passage 21 for exhausting exhaust gas from the cylinder 12 is connected to the cylinder 12. The upstream side of the exhaust passage 21 is branched into four according to the number of cylinders 12, and each branched passage is connected to the cylinder 12. A catalytic converter 22 for purifying the exhaust gas is attached to the downstream side of the branch point in the exhaust passage 21. The catalytic converter 22 oxidizes the hydrocarbon contained in the exhaust gas to water and carbon dioxide, and oxidizes carbon monoxide to carbon dioxide. Further, the catalytic converter 22 reduces nitrogen oxides contained in the exhaust gas to nitrogen. A particulate filter 23 that collects particulate matter contained in the exhaust gas is attached to the downstream side of the catalyst converter 22 in the exhaust passage 21.

An exhaust air-fuel ratio sensor 24 that detects the oxygen concentration in the exhaust as the air-fuel ratio R of the exhaust is attached to the downstream side of the branch point in the exhaust passage 21 and the upstream side of the catalytic converter 22. Further, an exhaust temperature sensor 25 for detecting the exhaust temperature TE is attached on the downstream side of the catalyst converter 22 in the exhaust passage 21 and on the upstream side of the particulate filter 23.

A crank angle sensor 27 that detects the rotational position of the crankshaft 11A as a crank angle CA is arranged in the vicinity of the crankshaft 11A, which is the output shaft of the internal combustion engine 11. Although not shown, a water jacket through which cooling water for cooling the internal combustion engine 11 flows is partitioned inside the internal combustion engine 11. A cooling water temperature sensor 28 that detects the cooling water temperature TW is attached to the most downstream portion of the water jacket.

The internal combustion engine 11 includes an oil pan 29 for storing oil supplied to various places including the internal combustion engine 11. The oil stored in the oil pan 29 is pumped by the oil pump P, supplied to the internal combustion engine 11 and other devices, and then returned to the oil pan 29 again.

The crankshaft 11A of the internal combustion engine 11 is driven and connected to the first motor generator 51 via the first planetary gear mechanism 30. The first planetary gear mechanism 30 has a sun gear 31 of an external gear and a ring gear 32 of an internal gear coaxially arranged with the sun gear 31. A plurality of pinion gears 33 that mesh with both the sun gear 31 and the ring gear 32 are arranged between the sun gear 31 and the ring gear 32. Each pinion gear 33 is supported by the carrier 34 in a state where it can rotate and revolve freely. In the first planetary gear mechanism 30 configured in this way, the crankshaft 11A of the internal combustion engine 11 is connected to the carrier 34. A first motor generator 51 is connected to the sun gear 31. A ring gear shaft 35 is connected to the ring gear 32.

The left and right drive wheels W are drive-connected to the ring gear shaft 35 via the reduction gear mechanism 56 and the differential gear 57. A second motor generator 52 is connected to the ring gear shaft 35 via a second planetary gear mechanism 40.

The second planetary gear mechanism 40 has a sun gear 41 of an external gear and a ring gear 42 of an internal gear coaxially arranged with the sun gear 41. A plurality of pinion gears 43 that mesh with both the sun gear 41 and the ring gear 42 are arranged between the sun gear 41 and the ring gear 42. Although each pinion gear 43 is rotatable, it cannot revolve. In the second planetary gear mechanism 40 configured in this way, the ring gear shaft 35 is connected to the ring gear 42. A second motor generator 52 is connected to the sun gear 41.

The hybrid system 10 is equipped with a battery 53 that stores electric power for supplying the first motor generator 51 and the second motor generator 52. The battery 53 has a built-in sensor unit 53A for detecting battery information IF such as voltage between terminals of the battery 53, output current and input current from the battery 53, and temperature of the battery 53.

The battery 53 is connected to the first motor generator 51 via the first inverter 54. When the first motor generator 51 functions as an electric motor, the first inverter 54 converts the direct current from the battery 53 into an alternating current and outputs the direct current to the first motor generator 51. When the first motor generator 51 functions as a generator, the first inverter 54 converts the alternating current generated by the first motor generator 51 into a direct current and supplies it to the battery 53.

The battery 53 is connected to the second motor generator 52 via the second inverter 55. When the second motor generator 52 functions as an electric motor, the second inverter 55 converts the direct current from the battery 53 into an alternating current and outputs the direct current to the second motor generator 52. When the second motor generator 52 functions as a generator, the second inverter 55 converts the alternating current generated by the second motor generator 52 into a direct current and supplies it to the battery 53.

A navigation device 71 is attached to the instrument panel of the hybrid vehicle. The navigation device 71 has a built-in display for displaying a map, traffic information, audio information, moving images, and the like. Information such as a message for calling the user's attention is displayed on the display of the navigation device 71 as needed. A plurality of speakers 72 are built in various parts of the hybrid vehicle, for example, the door. From the speaker 72, voice or music corresponding to the display of the navigation device 71 is emitted. Further, the speaker 72 emits information such as a message for calling the user's attention as needed. In this embodiment, the navigation device 71 and the speaker 72 function as an information notification unit that notifies the user of information.

In the vicinity of the driver's seat of the hybrid vehicle, a mode changeover switch 73 for switching the execution of the electric vehicle mode in which the vehicle is driven only by the driving force of the first motor generator 51 and the second motor generator 52 is mounted. The mode changeover switch 73 is a toggle type push button switch, and each time a pressing operation is performed, the execution of the electric vehicle mode described above and the execution of the hybrid mode in which the vehicle is driven by the drive of the internal combustion engine are switched. However, if the execution conditions of the other electric vehicle modes are not satisfied, the hybrid mode is executed regardless of the pressing operation of the mode changeover switch 73. Examples of the execution conditions of the other electric vehicle modes include the vehicle speed of the hybrid vehicle being less than the specified vehicle speed, the amount of depression of the accelerator pedal being less than the specified amount, and the temperature of the battery 53 being within the specified temperature range. Further, when the system start switch (sometimes called an ignition switch or the like) of the hybrid system 10 is turned off and turned on again, the hybrid mode is executed as the initial mode.

The hybrid system 10 includes an internal combustion engine 11, a control device 60 that collectively controls the first motor generator 51 and the second motor generator 52. A signal indicating the intake flow rate GA is input from the air flow meter 16 and a signal indicating the crank angle CA is input from the crank angle sensor 27 to the control device 60, and a signal indicating the crank angle CA is input to the control device 60 from the cooling water temperature sensor 28. A signal indicating the cooling water temperature TW is input, and information indicating the battery information IF is input from the sensor unit 53A of the battery 53. Further, a signal indicating the air-fuel ratio R of the exhaust is input from the exhaust air-fuel ratio sensor 24, and a signal indicating the exhaust temperature TE is input from the exhaust temperature sensor 25 to the control device 60. Although not shown, various signals necessary for controlling the hybrid system 10, such as a signal indicating the vehicle speed of the hybrid vehicle and a signal indicating the amount of depression of the accelerator pedal, are also input to the control device 60. To.

The control device 60 controls the opening degree of the throttle valve 15 and the fuel injection amount from the fuel injection valve 14 in the internal combustion engine 11 based on the signals from each sensor provided in the hybrid system 10. Further, the control device 60 controls the first inverter 54 and the second inverter 55 based on the signals from the sensors provided in the hybrid system 10 to control the first motor generator 51 and the second motor generator 52. Control.

The control device 60 calculates the charge capacity C of the battery 53 based on the battery information IF input from the sensor unit 53A of the battery 53. In this embodiment, the control device 60 calculates the charge capacity C as the ratio of the current charge capacity of the battery 53 to the full charge capacity when the maximum charge is stored in the battery 53.

The control device 60 calculates the dilution amount of the oil stored in the oil pan 29 for each predetermined control cycle. Specifically, the control device 60 calculates the amount of liquid mixed in the oil, for example, the amount of fuel or water, as the intake flow rate GA input from the air flow meter 16 increases. Further, the control device 60 calculates the amount of liquid volatilized from the oil as the cooling water temperature TW input from the cooling water temperature sensor 28 increases. Then, a new dilution amount is calculated by adding the difference obtained by subtracting the amount of liquid volatilized from the oil from the amount of liquid mixed in the oil to the dilution amount calculated in the previous cycle. As described above, in the present embodiment, the control device 60 functions as the dilution amount calculation unit 60A.

The control device 60 calculates the amount of particulate matter deposited on the particulate filter 23 for each predetermined control cycle. The control device 60 subtracted the regeneration amount, which is the amount of the particulate matter burned in the particulate filter 23, from the amount of the newly generated particulate matter, and calculated the difference in the previous cycle. A new deposit amount is calculated by adding to the deposit amount. The control device 60 calculates the amount of particulate matter produced as a larger value as the intake flow rate GA input from the air flow meter 16 is larger and the fuel injection amount injected from the fuel injection valve 14 is larger. Further, when the exhaust temperature TE input from the exhaust temperature sensor 25 is less than the ignition point of the particulate matter, the control device 60 calculates the regeneration amount as zero. Then, when the exhaust temperature TE input from the exhaust temperature sensor 25 is equal to or higher than the ignition point of the particulate matter, the control device 60 calculates the generated amount as a larger value as the exhaust temperature TE increases. As described above, in the present embodiment, the control device 60 functions as the deposit amount calculation unit 60B.

When the dilution amount of the oil calculated as described above exceeds the predetermined dilution amount, the control device 60 volatilizes the fuel and water contained in the oil stored in the oil pan 29. Perform volatilization treatment to remove. When performing this volatilization process, the control device 60 increases the output of the internal combustion engine 11 to increase the amount of heat generated by the internal combustion engine 11, and also increases the amount of power generated by the first motor generator 51. As a result, the temperature of the oil stored in the oil pan 29 becomes a temperature sufficient for volatilizing the fuel and water.

Further, the control device 60 performs a filter regeneration process of burning and removing the particulate matter when the deposited amount of the particulate matter calculated as described above exceeds a predetermined predetermined deposited amount. When performing this filter regeneration processing, the control device 60 increases the output of the internal combustion engine 11 to increase the amount of heat generated by the internal combustion engine 11, and also increases the amount of power generated by the first motor generator 51. The temperature of the particulate filter 23 is raised. After that, the control device 60 supplies oxygen to the particulate filter 23 by rotating the crankshaft 11A by the first motor generator 51 to idle the internal combustion engine 11. As a result, the particulate matter deposited on the particulate filter 23 is burned.

When the control device 60 needs to perform the above-mentioned volatilization process or filter regeneration process during the execution of the electric vehicle mode, the control device 60 prompts the user to operate the mode changeover switch 73 on the navigation device 71 or the speaker 72. Notify the information for. Specifically, the control device 60 displays a message such as "press a switch to cancel the electric vehicle mode" on the display of the navigation device 71, and utters the same message from the speaker 72. That is, in this embodiment, the control device 60 functions as a notification control unit 60C for notifying the user of information for prompting the user to operate the mode changeover switch 73.

Next, the information notification process by the control device 60 will be described. The following series of information notification processes are repeatedly executed when the hybrid vehicle is traveling in the electric vehicle mode.

As shown in FIG. 2, when the information notification process is started, the control device 60 executes step S1. In step S1, the control device 60 determines whether or not the charge capacity C of the battery 53 exceeds the predetermined first predetermined value C1. The first specified value C1 is a value for detecting in advance that the charging capacity C of the battery 53 becomes equal to or less than the second specified value C2 sufficient to continue the electric vehicle mode. The first specified value C1 is, for example, a value in the range of 40 to 60%. The second specified value C2 is a value less than the first specified value C1, for example, a value within the range of 20 to 40%. When it is determined that the charging capacity C does not exceed the first specified value C1, that is, when it is determined that the charging capacity C is equal to or less than the first specified value C1 (NO in step S1), the control device 60 The process proceeds to step S2.

In step S2, the control device 60 determines whether or not the charge capacity C of the battery 53 exceeds the above-mentioned second specified value C2. When it is determined that the charging capacity C exceeds the second specified value C2 (YES in step S2), the process of the control device 60 shifts to step S6 described later. When it is determined that the charging capacity C does not exceed the second specified value C2, that is, when it is determined that the charging capacity C is equal to or less than the second specified value C2 (NO in step S2), the control device 60 The process proceeds to step S12, which will be described later.

If it is determined in step S1 that the charge capacity C exceeds the first specified value C1 (YES in step S1), the process of the control device 60 shifts to step S3. In step S3, the control device 60 calculates the amount of dilution of the oil stored in the oil pan 29 and the amount of particulate matter deposited on the particulate filter 23. After that, the process of the control device 60 shifts to step S4.

In step S4, the control device 60 determines whether or not the dilution amount of oil calculated in step S3 exceeds a predetermined dilution amount. Here, when the oil is diluted with fuel or water, the viscosity and lubrication performance change. Therefore, in the present embodiment, the specified dilution amount is determined within the range of the dilution amount that can secure the minimum physical properties such as viscosity and lubrication performance required for the oil by performing a test or a simulation. When it is determined that the dilution amount of the oil exceeds the specified dilution amount (YES in step S4), the process of the control device 60 shifts to step S6. On the other hand, when it is determined that the dilution amount of the oil does not exceed the specified dilution amount, that is, when it is determined that the dilution amount of the oil is equal to or less than the specified dilution amount (NO in step S4), the control device 60 The process proceeds to step S5.

In step S5, the control device 60 determines whether or not the accumulated amount of the particulate matter calculated in step S3 exceeds a predetermined predetermined accumulated amount. Here, when particulate matter is deposited on the particulate filter 23, the flow path resistance when the exhaust gas passes through the particulate filter 23 increases. Therefore, in the present embodiment, the specified deposit amount is determined within the range of the deposit amount that can secure the minimum flow of the exhaust gas in the particulate filter 23 by performing a test or a simulation. Control when it is determined that the accumulated amount of particulate matter does not exceed the specified accumulated amount, that is, when it is determined that the accumulated amount of particulate matter is less than or equal to the specified accumulated amount (NO in step S5). The series of information notification processing by the device 60 is completed, and the information notification processing is executed again from the beginning. On the other hand, when it is determined that the accumulated amount of the particulate matter exceeds the specified accumulated amount (YES in step S5), the process of the control device 60 shifts to step S6.

In step S6, the control device 60 determines whether or not the "notification prohibition flag" is turned off. The "notification prohibition flag" indicates whether to prohibit or allow the notification of the information prompting the user to operate the mode changeover switch 73. The above information notification is prohibited when the "notification prohibition flag" is on, and the above information notification is allowed when the "notification prohibition flag" is off. When it is determined that the "notification prohibition flag" is on (NO in step S6), the process of the control device 60 proceeds to step S11 described later. On the other hand, when it is determined that the "notification prohibition flag" is off (YES in step S6), the processing of the control device proceeds to step S7.

In step S7, the control device 60 causes the navigation device 71 and the speaker 72 to notify the information for canceling the electric vehicle mode. Specifically, as described above, the control device 60 operates the mode changeover switch 73 by displaying a message such as "press the switch to cancel the electric vehicle mode" on the display of the navigation device 71. Prompt the user. Further, the control device 60 prompts the user to operate the mode changeover switch 73 by causing the speaker 72 to utter the same message. The above message continues to be displayed on the display of the navigation device 71 unless the notification is canceled. Further, the speaker 72 periodically (for example, every ten and several seconds) repeats the utterance of the above message unless the notification is canceled. If the message has already been notified at the time of execution of step S7, the message notification is continued as it is. After step S7, the process of the control device 60 shifts to step S8.

In step S8, the control device 60 determines whether or not the notification duration T, which is the time from the start of message notification, is less than the predetermined predetermined time Tx. The specified time Tx is set to, for example, several minutes. If it is determined that the notification duration T is less than the specified time Tx (YES in step S8), the process of the control device 60 shifts to step S11. On the other hand, when it is determined that the notification duration T is not less than the specified time Tx, that is, the notification duration T is equal to or more than the specified time Tx (NO in step S8), the process of the control device 60 shifts to step S9. To do.

In step S9, the control device 60 cancels the information notification to prompt the user to operate the mode changeover switch 73 by stopping the display of the message on the navigation device 71 and the utterance of the message on the speaker 72. Further, the control device 60 clears the notification duration T to zero as the notification is canceled. After that, the process of the control device 60 shifts to step S10. In step S10, the control device 60 switches the "notification prohibition flag" on. After that, the process of the control device 60 shifts to step S11.

In step S11, the control device 60 determines whether or not the electric vehicle mode has been cancelled. Specifically, the control device 60 determines that the electric vehicle mode is canceled when the mode changeover switch 73 is pressed by the user, and the electric vehicle mode is not canceled when the mode changeover switch 73 is not pressed. judge. If it is determined that the electric vehicle mode has not been canceled (NO in step S11), the series of information notification processing by the control device 60 ends, and the information notification processing is executed again from the beginning. If it is determined that the electric vehicle mode has been canceled (YES in step S11), the process of the control device 60 shifts to step S12.

In step S12, the control device 60 starts the internal combustion engine 11 that has been stopped. It also turns off the notification prohibition flag. After that, a series of information notification processes by the control device 60 are completed. When the information notification process is completed through this step S12, the hybrid vehicle travels in the hybrid mode, so that the information notification process is not performed until the electric vehicle mode is executed again. Further, since the internal combustion engine 11 is started by the process of step S12, after that, when other conditions are satisfied, the fuel and water contained in the oil are volatilized and removed, and the particulate matter is burned. The filter regeneration process for removing is executed.

The action and effect of this embodiment will be described.
(1) In the above embodiment, the mode changeover switch satisfies at least one of the conditions that the oil dilution amount exceeds the specified dilution amount and the deposited amount of the particulate matter exceeds the specified deposited amount. A message is displayed / spoken as information for prompting the user to operate 73. Therefore, there is a high possibility that the user who recognizes this message presses the mode changeover switch 73 to cancel the electric vehicle mode. Then, if the electric vehicle mode is canceled and the internal combustion engine 11 is started, there are many opportunities to execute the volatilization process and the filter regeneration process.

(2) In the above embodiment, even when the conditions that the oil dilution amount exceeds the specified dilution amount and the deposited amount of the particulate matter exceeds the specified deposited amount, the mode by the user is satisfied. Without the pressing operation of the changeover switch 73, the electric vehicle mode cannot be switched to the hybrid mode. Therefore, the user does not feel uncomfortable when the electric vehicle mode is suddenly switched to the hybrid mode.

(3) In the above embodiment, the information notification is canceled when the specified time Tx elapses after the notification of the information for prompting the user to operate the mode changeover switch 73 is started. That is, in the above embodiment, after the specified time Tx has elapsed from the start of the information notification, the user recognizes the notification and does not intentionally operate the mode changeover switch 73. Therefore, according to the above-described embodiment, it is possible to prevent the user from being annoyed by the continuous notification of information for a long time even though the mode changeover switch 73 is not intentionally operated.

(4) In the above embodiment, even when the charging capacity C is larger than the second specified value C2 and equal to or less than the first specified value C1, information for prompting the user to operate the mode changeover switch 73 is notified. Therefore, it is possible to prompt the switch to the hybrid mode in advance before the charge capacity C of the battery 53 drops to the charge capacity C sufficient to continue the electric vehicle mode. On the other hand, when the charging capacity C is equal to or less than the second specified value C2, the internal combustion engine 11 is forcibly started without giving the above notification, so that the charging capacity C is excessively lowered and the battery 53 It can also prevent it from causing deterioration.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-The configuration of the drive source in the hybrid system is not limited to the example of the above embodiment. For example, the crankshaft 11A of the internal combustion engine 11 and the rotating shaft of the motor generator may be coaxially connected without a gear mechanism. That is, if the hybrid system can drive the vehicle only by the driving force of the motor generator without driving the internal combustion engine 11, the information notification process of the above embodiment can be applied.

-The device for notifying the user of information for prompting the user to operate the mode changeover switch 73 may be only one of the navigation device 71 and the speaker 72.
-As a device for notifying the user of information for prompting the user to operate the mode changeover switch 73, another device may be adopted in place of or in addition to the navigation device 71 and the speaker 72. For example, if the speedometer or tachometer is a vehicle displayed on a display, the above information may be displayed on the display. Further, if a multi-information display for displaying the mileage, fuel consumption, etc. is mounted around the speedometer or tachometer, the above information may be displayed on the multi-information display.

-The information for prompting the user to operate the mode changeover switch 73 is not limited to the message. For example, an icon that intuitively indicates that the mode changeover switch 73 must be pressed may be displayed, or a warning lamp or a warning indicator may be turned on or blinking. Further, instead of uttering a message, an electronic beep may be produced. That is, if the user of the hybrid vehicle can grasp that an unfavorable situation is occurring in the hybrid vehicle, the user is prompted to operate the mode changeover switch 73 regardless of the situation. Can serve as information for.

The mode changeover switch 73 is not limited to the toggle type push button as in the example of the above embodiment. For example, the mode changeover switch 73 may be any type such as a lever type switch, a slide type switch, and a knob type switch. Further, for example, if the display of the navigation device 71 also functions as a touch panel, the mode changeover switch 73 can be displayed on the display. In this case, the display of the navigation device 71 also functions as the mode changeover switch 73.

-In the information notification processing of the above embodiment, the processing of steps S1 and S2 regarding the charging capacity C may be omitted. Even in this case, in parallel with the information notification process, it is monitored whether the charging capacity C is the second specified value C2 or less, and if the charging capacity C becomes the second specified value C2 or less, it is forcibly generated. The electric vehicle mode may be switched to the hybrid mode.

-In the information notification process of the above embodiment, the process of determining whether or not the oil dilution amount exceeds the specified dilution amount (step S4) and determining whether or not the accumulated amount of particulate matter exceeds the specified accumulated amount. Either one of the processes (step S5) to be performed may be omitted. Even if the user is notified of the information for prompting the user to operate the mode changeover switch 73 based on only one of the determinations, the internal combustion engine 11 has many chances to be driven. Therefore, both the volatilization process and the filter regeneration process are performed. There are more opportunities to do it.

-The process related to the "notification prohibition flag", that is, the process related to step S6, step S8, step S9, and step S10 may be omitted. In this case, when the information is notified in step S7, the information notification continues until the user switches from the electric vehicle mode to the hybrid mode by pressing the mode changeover switch 73 or the like.

-After a certain period of time has elapsed from the start of notifying the user of the information for prompting the user to operate the mode changeover switch 73, the mode changeover switch 73 is switched from the electric vehicle mode to the hybrid mode regardless of whether or not the mode changeover switch 73 is pressed. The internal combustion engine 11 may be started. If the above information notification is given for a certain period of time, it is highly probable that the user knows it. Therefore, even if the mode changeover switch 73 switches to the hybrid mode without depending on the pressing operation, there is a great sense of discomfort. It is unlikely that you will embrace.

10 ... hybrid system, 11 ... internal gear engine, 11A ... crank shaft, 12 ... cylinder, 13 ... intake passage, 14 ... fuel injection valve, 15 ... throttle valve, 16 ... air flow meter, 21 ... exhaust passage, 22 ... catalytic converter, 23 ... Particulate filter, 24 ... Exhaust air-fuel ratio sensor, 25 ... Exhaust temperature sensor, 27 ... Crank angle sensor, 28 ... Cooling water temperature sensor, 30 ... 1st planetary gear mechanism, 31 ... Sun gear, 32 ... Ring gear, 33 ... Pinion gear, 34 ... carrier, 35 ... ring gear shaft, 40 ... first planetary gear mechanism, 41 ... sun gear, 42 ... ring gear, 43 ... pinion gear, 51 ... first motor generator, 52 ... second motor generator, 53 ... Battery, 53A ... Sensor unit, 54 ... 1st inverter, 55 ... 2nd inverter, 56 ... Reduction gear mechanism, 57 ... Differential gear, 60 ... Control device, 60A ... Dilution amount calculation unit, 60B ... Accumulation amount calculation unit, 60C ... Notification control unit, 71 ... Navigation device, 72 ... Speaker, 73 ... Mode selector switch, GA ... Intake flow rate, CA ... Crank angle, TW ... Cooling water temperature, IF ... Battery information, R ... Air fuel ratio, TE ... Exhaust Temperature, W ... drive wheel, P ... pump, C ... charge capacity, C1 ... first specified value, C2 ... second specified value.

Claims (1)

An internal combustion engine as a drive source, a particulate filter provided in an exhaust path of exhaust gas discharged from the internal combustion engine, an oil pan for storing oil for lubricating various parts of the internal combustion engine, and a drive connection to the internal combustion engine. The motor generator, the mode changeover switch that switches the execution of the electric vehicle mode in which the vehicle is driven only by the driving force of the motor generator according to the operation of the user, and the information notification unit that notifies the user of information. It is a control device applied to a hybrid vehicle equipped with
A dilution amount calculation unit that calculates the dilution amount of the oil stored in the oil pan,
A deposit amount calculation unit that calculates the deposit amount of particulate matter deposited on the particulate filter, and
Under the condition that the electric vehicle mode is executed, the dilution amount calculated by the dilution amount calculation unit exceeds the predetermined dilution amount, and the deposition amount calculated by the deposition amount calculation unit is predetermined. When at least one of the conditions that the specified accumulation amount is exceeded is satisfied, the information notification unit is provided with a notification control unit that notifies the user of information for prompting the user to operate the mode changeover switch. Control device.