Vehicle control system

Abstract

To provide a control device of a vehicle which can surely and properly perform launch control when a driver performs an operation of the launch control.SOLUTION: A control device of a vehicle comprises an engine 1 and an automatic transmission 2 for transmitting torque between drive wheels 8 and itself, and can perform launch control for abruptly starting and abruptly accelerating a vehicle Ve in response to operations of a brake pedal 3 and an accelerator pedal 4 which are performed by a driver. The control device determines the adaptability of the execution of the launch control on the basis of a control requirement of the automatic transmission 2 prior to the execution of the launch control (Step S1), makes a driver recognize the impossibility of the execution of the control by displaying it on a display apparatus 5 when it is determined that the launch control is impossible to execute, performs the launch control when it is determined that the launch control is executable, and completes the launch control without suspending the execution in midway (Steps S5, S6).SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This invention relates to a control device for a vehicle equipped with an automatic transmission.

Background Art

[0002] Patent Document 1 describes a control device for a vehicle capable of performing launch control. Launch control is a technology for automatically controlling an engine (a power source) and an automatic transmission in order to smoothly and quickly start and accelerate a stopped vehicle. Launch control is implemented, for example, at the start of a vehicle in circuit driving, a race, or a competition. Also, launch control may be implemented in order to obtain good results in a 0-100 km / h (or 0-60 mph) acceleration performance test or the like. When implementing launch control, the driver steps on the accelerator pedal while keeping the brake pedal depressed, so that while maintaining the stopped state of the vehicle, the engine speed increases and is held at a predetermined speed. From that state, when the driver releases the brake pedal, the vehicle generates a large driving force and starts and accelerates rapidly.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By implementing the launch control described above, it is possible to ensure appropriate traction and provide optimal driving force when starting a vehicle, allowing it to start and accelerate. Therefore, even when the vehicle starts and accelerates rapidly, tire slippage can be suppressed and the vehicle's behavior can be stabilized. On the other hand, implementing launch control places a significant burden on the engine and drivetrain, so there may be restrictions on the number of times it can be implemented or its continuous use. In addition, the implementation of launch control may be prohibited due to the control requirements of the automatic transmission. For example, if the implementation of launch control is prohibited by the control requirements of the automatic transmission immediately after the driver has started the operation to implement launch control, there is a risk that the launch control may be interrupted midway, even though the driver intends to continue the operation.

[0005] This invention was conceived in view of the above-mentioned technical problems, and aims to provide a vehicle control device that can reliably perform launch control when the driver performs the operation to perform launch control. [Means for solving the problem]

[0006] To achieve the above objective, this invention provides a vehicle control device that comprises a drive force source, an automatic transmission that transmits torque between the drive force source and the drive wheels, a brake pedal and an accelerator pedal operated by the driver, and a notification device that informs the driver of predetermined information, and is capable of performing launch control, which generates driving force in the drive wheels in response to the driver's operation of the brake pedal and the accelerator pedal at the time of starting, thereby rapidly starting and accelerating the vehicle, and comprises a controller that controls the drive force source and the automatic transmission respectively, and also performs the launch control, wherein the controller determines whether or not to perform the launch control based on the control requirements of the automatic transmission prior to performing the launch control. , if the aforementioned control requirements violate predetermined conditions for non-implementationIf the launch control system determines that it cannot be implemented, it will notify the driver of this fact using the notification device. , provided that the control requirements do not violate the conditions for non-implementation The launch control will be executed if it is determined that it is feasible to do so. Furthermore, if the control requirements violate the conditions for non-implementation during the execution of the launch control, the launch control will be completed without interruption. If the control requirements violate conditions for prohibition that are stricter than the conditions for non-implementation, the launch control will be deemed unimplementable, and the driver will be notified of this unimplementable condition through the notification device, and the execution of the launch control will be prohibited. It is characterized by the following:

[0008] Furthermore, the controller in this invention may be configured to acquire the internal oil temperature of the automatic transmission as a control requirement, and if the internal oil temperature is equal to or greater than the predetermined unsuitable oil temperature as an unsuitable condition for implementation, it may determine that the launch control cannot be performed, and if the internal oil temperature is less than the unsuitable oil temperature, it may determine that the launch control can be performed and execute the launch control, and even if the internal oil temperature rises to or greater than the unsuitable oil temperature during the execution of the launch control, the launch control may be completed without being interrupted midway. [Effects of the Invention]

[0010] The vehicle controlled by this invention is capable of performing launch control, which allows the driver to make the vehicle start and accelerate rapidly by operating the brake and accelerator pedals. By performing launch control, the performance of the vehicle and the power source is maximized, and the optimal driving force is generated, allowing the vehicle to start and accelerate rapidly. However, launch control places a heavy burden on the vehicle's drive system and power source, so its implementation may be limited. For example, the implementation of launch control may be limited by the control requirements of the automatic transmission. If the implementation of launch control is limited by the control requirements of the automatic transmission after the driver has started the operation to perform launch control, launch control will not be performed against the driver's intention. In contrast, the vehicle control device of this invention determines whether or not to perform launch control before it is performed. For example, the determination of whether or not to perform launch control is made during the preparation stage for performing launch control, or when switching to a driving mode for performing launch control.

[0011] Specifically, in the vehicle control device of this invention, if the control requirements of the automatic transmission violate predetermined conditions for implementation, it is determined that launch control cannot be performed. When it is determined that launch control cannot be performed, the driver is notified of this fact by a notification device, so the driver can recognize that launch control cannot be performed at this time. Therefore, the driver can cancel the operation to perform launch control. On the other hand, when it is determined that launch control can be performed, the driver can perform launch control. After the driver has started the operation to perform launch control, even if the control requirements of the automatic transmission violate the conditions for implementation of launch control, the control to perform launch control will continue to be executed until launch control is completed. Therefore, it is possible to avoid the launch control being canceled against the driver's intention after the driver has started the operation to perform launch control.

[0012] Furthermore, in the vehicle control device of this invention, the internal oil temperature of the automatic transmission is acquired as a control requirement for the automatic transmission as described above. The internal oil temperature of the automatic transmission is estimated based on, for example, the operating state of the automatic transmission or the driving state of the vehicle. Alternatively, the internal oil temperature of the automatic transmission may be determined by actual measurement. In the vehicle control device of this invention, if the internal oil temperature of the automatic transmission exceeds a predetermined unsuitable oil temperature, that is, if the unsuitable condition is violated, it is determined that launch control cannot be performed. In this way, by making the rise in the internal oil temperature of the automatic transmission an unsuitable condition for performing launch control among the control requirements for the automatic transmission, it is possible to easily and appropriately determine whether or not launch control can be performed.

[0013] Furthermore, in the vehicle control device of this invention, stricter conditions for prohibiting the implementation of launch control may be set than the conditions for disqualification of launch control as described above. The conditions for prohibition are set based on, for example, driving conditions that exceed the permissible range of the automatic transmission, or conditions in which a failure has occurred in the control system of the automatic transmission. In the vehicle control device of this invention, if the control requirements of the automatic transmission violate the conditions for prohibiting the implementation of launch control, it is determined that the implementation of launch control is not possible, and this fact is notified to the driver by a notification device. At the same time, the implementation of launch control is prohibited. If the control requirements of the automatic transmission violate the conditions for prohibition during the execution of launch control, the launch control is stopped midway in order to prevent malfunction or deterioration of the automatic transmission. Therefore, it is possible to avoid a situation in which the continued implementation of launch control would lead to malfunction or deterioration of the automatic transmission.

[0014] Therefore, according to the vehicle control device of this invention, when the driver performs an operation to perform launch control, launch control can be performed reliably and appropriately. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is a schematic diagram showing the configuration and control system of the vehicle to be controlled in this invention. [Figure 2] Figure 2 is a flowchart illustrating an example of control performed by the vehicle control device of this invention. [Modes for carrying out the invention]

[0016] Embodiments of this invention will be described with reference to the drawings. Note that the embodiments shown below are merely examples of how this invention can be implemented and do not limit the invention.

[0017] Figure 1 shows an example of the drive system of a vehicle Ve to be controlled in an embodiment of this invention. The vehicle Ve shown in Figure 1 is equipped with an engine (ENG) 1 as the “driving force source”. The vehicle Ve is also equipped with an automatic transmission (AT) 2, a brake pedal 3, an accelerator pedal 4, a display device 5, a detection unit 6, and a controller (ECU) 7. The vehicle Ve is configured to perform launch control. Launch control is a driving operation in which the driver operates the brake pedal 3 and the accelerator pedal 4 to cause the vehicle Ve to start and accelerate rapidly, and a control technology that automatically controls the “driving force source” and the automatic transmission 2 in response to that driving operation.

[0018] Engine 1 is, for example, an internal combustion engine such as a gasoline engine or a diesel engine, and is configured to electrically control its output, as well as its operating states such as starting and stopping. Vehicle Ve may be a hybrid vehicle equipped with both an engine and a motor as its driving force sources. The launch control implemented in this vehicle Ve basically automatically controls the output of the engine and the gear changes of the automatic transmission 2 in response to the driver's operation. Therefore, a similar launch control can be implemented even in a hybrid vehicle equipped with an engine (not shown).

[0019] The automatic transmission 2 is installed between the "driving power source" and the "drive wheels" and transmits the output torque of the "driving power source" to the "drive wheels". At the same time, it changes the rotational speed of the output shaft (not shown) of the "driving power source". In the example shown in Figure 1, the automatic transmission 2 is connected to the output side of the engine 1 and transmits the output torque of the engine 1 between the engine 1 and the rear wheels 8. The automatic transmission 2 is a power transmission device that can appropriately change the ratio of the rotational speed of the output shaft (not shown) to the rotational speed of the input shaft (not shown), i.e., the gear ratio, and automatically controls the control of changing the gear ratio (gear stage), i.e., gear shift control.

[0020] In this embodiment of the invention, the vehicle Ve to be controlled may be a rear-wheel drive vehicle that transmits the drive torque output by the "drive source" to the rear wheels 8 via the automatic transmission 2, propeller shaft 9, differential gear 10, and drive shaft 11, generating driving force in the rear wheels 8, as shown in the embodiment in Figure 1. Alternatively, the vehicle Ve may be a front-wheel drive vehicle (not shown) that transmits the drive torque output by the "drive source" to the front wheels 12, generating driving force in the front wheels 12. Alternatively, the vehicle Ve may be a four-wheel drive vehicle (not shown) that generates driving force in both the rear wheels 8 and the front wheels 12.

[0021] As described above, vehicle Ve is equipped with an automatic transmission 2 and has a brake pedal 3 and an accelerator pedal 4 for driving vehicle Ve. Ve is configured to perform launch control when starting, and launch control is performed by the driver operating the brake pedal 3 and accelerator pedal 4 respectively. Launch control is performed using a well-known general operating method. For example, launch control is performed when a predetermined driving mode is set, or when a select switch (not shown) that enables launch control is turned ON. Then, in the state in which launch control is possible as described above, the driver presses down on the brake pedal 3 and the accelerator pedal 4 at the same time, thereby increasing the rotational speed of engine 1 while maintaining the vehicle Ve in a stationary state. The rotational speed of engine 1 is maintained at a predetermined rotational speed. From that state, when the driver releases the brake pedal 3, vehicle Ve generates a large driving force and makes a sudden start and accelerates rapidly. In other words, launch control is performed.

[0022] The display device 5 corresponds to the "notification device" in the embodiment of this invention and notifies the driver of predetermined information. In particular, the display device 5 displays information related to the implementation status and feasibility of the launch control. In the example shown in FIG. 1, the display device 5 is, for example, a display or monitor arranged on the instrument panel 13 together with instruments such as a speedometer (not shown) and a tachometer (not shown). Note that the "notification device" in the embodiment of this invention includes, in addition to the display device 5, for example, an acoustic device (not shown) that notifies the driver of the above information by voice guidance, and a display (not shown) that notifies the driver of the above information by lighting or blinking of a lamp, etc.

[0023] The detection unit 6 detects various data used for the control of the vehicle Ve. The detection unit 6 has various sensors such as a rotation speed sensor 6a that detects, for example, the rotation speed of the engine 1, the input rotation speed and output rotation speed of the automatic transmission 2, and the turbine rotation speed of a torque converter (not shown), a wheel speed sensor 6b that detects the rotation speed of each wheel of the front wheels 12 and rear wheels 8, a brake pedal sensor (or brake switch) 6c that detects the depressed state of the brake pedal 3, an accelerator pedal sensor 6d that detects the depressed state of the accelerator pedal 4, an oil temperature sensor 6e that detects the internal oil temperature of the automatic transmission 2, and a water temperature sensor 6f that detects the temperature of the cooling water of the engine 1. In addition, it has various sensors and devices such as a shift position sensor (not shown) that detects the shift position of the shift device (not shown) of the automatic transmission 2 (or the shift range set by the automatic transmission 2), and a driving mode select switch (not shown) that detects the driving mode of the vehicle Ve. And the detection unit 6 is electrically connected to a controller 7 described later, and outputs an electrical signal corresponding to the detection values or calculated values of the above various sensors, devices, and apparatuses as detection data to the controller 7.

[0024] The controller 7 is an electronic control device mainly composed of, for example, a microcomputer. In the vehicle control device in the embodiment of this invention, the controller 7 particularly controls the output of the "driving force source" (in the example shown in FIG. 1, the engine 1) and the shifting operation of the automatic transmission 2. Various data detected or calculated by the above detection unit 6 are input to the controller 7. The controller 7 performs calculations using the input various data and the data and calculation formulas stored in advance. Then, the controller 7 outputs the calculation result as a control command signal and is configured to control the above "driving force source" and the automatic transmission 2. Although FIG. 1 shows an example in which one controller 7 is provided, a plurality of controllers 7 may be provided for each device or equipment to be controlled, or for each control content.

[0025] As described above, the controller 7 of the vehicle Ve in the embodiment of this invention is configured to execute the control shown in the following flowchart of FIG. 2 in order to surely and appropriately perform the launch control in response to the driver's operation.

[0026] The control shown in the flowchart of FIG. 2 is executed, for example, when a driving mode in which launch control can be performed is set, or when a select switch for enabling launch control is turned on. Specifically, it is executed when the start prerequisite condition of the launch control is satisfied (when the start prerequisite condition is ON). Examples of the start prerequisite condition of the launch control include (1) The power mode (or the sports mode) is selected as the driving mode. (2) The shift range of the automatic transmission 2 is in the D (drive) range or the M (manual) mode. (3) The shift range of the automatic transmission 2 is not in the R (reverse) range and the N (neutral) range. (4) The skid control device (not shown) is not operating. (5) The transfer case (not shown) of the four-wheel drive vehicle is not in the L4 (low gear for four-wheel drive) range. These are some examples. If all of the above conditions are met, it is determined that the prerequisites for launch control have been met. In other words, if even one of the above conditions is not met, the prerequisites for launch control have not been met, and therefore the control shown in the flowchart of Figure 2 will not be executed.

[0027] When the launch control initiation prerequisites are met and the control shown in the flowchart of Figure 2 is initiated, first, in step S1, it is determined whether the launch control initiation condition is ON based on the control requirements (AT requirements) of the automatic transmission 2. The launch control initiation condition based on the control requirements of the automatic transmission 2 is that the control requirements of the automatic transmission 2 do not violate any predetermined conditions for implementation. If the control requirements of the automatic transmission 2 do not violate any conditions for implementation of launch control, the launch control initiation condition is ON, and it is determined that launch control can be implemented. On the other hand, if the control requirements of the automatic transmission 2 violate any conditions for implementation of launch control, the launch control initiation condition is OFF, and it is determined that launch control cannot be implemented.

[0028] Specifically, if the internal oil temperature of the automatic transmission 2 exceeds a predetermined unsuitable oil temperature, it violates the conditions for unsuitability of launch control, and launch control is deemed impossible. On the other hand, if the internal oil temperature of the automatic transmission 2 is below the unsuitable oil temperature, it does not violate the conditions for unsuitability of launch control, and launch control is deemed possible. The internal oil temperature of the automatic transmission 2 is detected as an automatic transmission 2 control requirement, for example, by an oil temperature sensor 6e. Alternatively, the internal oil temperature of the automatic transmission 2 is estimated based on detected values ​​from a rotation speed sensor 6a, a wheel speed sensor 6b, etc. The unsuitable oil temperature for launch control is a threshold value used to determine an oil temperature state unsuitable for launch control, and is predetermined based on results such as actual vehicle driving experiments or simulations.

[0029] If the launch control initiation condition based on the control requirements of the automatic transmission 2 is OFF, that is, if the control requirements of the automatic transmission 2 violate the conditions for non-implementation, and the result is determined to be "No" in step S1, the process proceeds to step S2. Specifically, if the internal oil temperature of the automatic transmission 2 is above the non-implementation oil temperature, it is determined that the control requirements of the automatic transmission 2 violate the conditions for non-implementation, and the launch control initiation condition is turned OFF.

[0030] In step S2, the display device 5 displays information indicating that launch control cannot be performed. The display device 5 displays information related to the status and feasibility of launch control to inform the driver. In this case, the driver understands that launch control cannot be performed. This allows the driver to cancel the operation to perform launch control before actually performing the operation. Therefore, it is possible to avoid the launch control being canceled against the driver's intention after the driver has started the operation to perform launch control. When the information that launch control cannot be performed is displayed in step S2, the routine shown in the flowchart of Figure 2 is terminated.

[0031] On the other hand, if the launch control initiation condition based on the control requirements of the automatic transmission 2 is ON, that is, if the control requirements of the automatic transmission 2 do not violate any conditions for non-implementation, and the result is determined to be "Yes" in step S1, then proceed to step S3.

[0032] In step S3, it is determined whether the launch control initiation condition is ON based on the vehicle Ve and engine 1 control requirements (EFI requirements). Examples of launch control initiation conditions based on the vehicle Ve and engine 1 control requirements include: (1) The temperature of the coolant in engine 1 is within a specified value. (2) There is no abnormality in the water temperature sensor 6f of engine 1. (3) The implementation of launch control is not prohibited. (4) The brake system (not shown) and the brake pedal sensor 6c are not malfunctioning. (5) The accelerator pedal sensor 6d is not malfunctioning. (6) There is no abnormality in the gears of automatic transmission 2. (7) The rotation speed sensor 6a is not malfunctioning. (8) There are no abnormalities in the communication system (not shown) between the various parts of the vehicle Ve. (9) The engine system (not shown) is not malfunctioning, or the MIL (malfunction warning light or engine check light) (not shown) is not illuminated. (10) There is no abnormality in the shift position sensor of the automatic transmission 2, or there is no abnormality in the shift range signal of the automatic transmission 2. (11) There is no malfunction in the upshift / downshift request switch (not shown) of the automatic transmission 2. (12) The ignition switch (not shown) must be in a stable operating state after being turned ON. These are some examples. When all of the above conditions are met, the launch control start condition based on the control requirements of vehicle Ve and engine 1 is turned ON. In other words, if even one of the above conditions is not met, the launch control start condition based on the control requirements of vehicle Ve and engine 1 is turned OFF.

[0033] If the launch control initiation condition based on the control requirements of vehicle Ve and engine 1 is OFF, and the result in a "No" in step S3, the process proceeds to step S2 as described above. Then, as before, information indicating that launch control cannot be performed is displayed on the display device 5. After that, the routine shown in the flowchart of Figure 2 is terminated.

[0034] On the other hand, if the launch control initiation condition based on the control requirements of vehicle Ve and engine 1 is ON, and the result is determined to be "Yes" in step S3, the process proceeds to step S4.

[0035] In step S4, information indicating that launch control is possible is displayed on the display device 5. In this case, the driver recognizes that launch control is possible. This allows the driver to initiate or intend to initiate the operation to perform launch control.

[0036] Next, in step S5, launch control is initiated. As mentioned above, launch control is performed when the driver operates the brake pedal 3 and accelerator pedal 4 together. Specifically, the operation of the engine 1 and automatic transmission 2 is automatically controlled in response to the driver's operation of the brake pedal 3 and accelerator pedal 4 to perform launch control. In other words, launch control is performed by the vehicle Ve's controller 7. By performing this launch control, the performance of the vehicle Ve and engine 1 is maximized, generating optimal driving force and allowing the vehicle Ve to start and accelerate rapidly.

[0037] Then, in step S6, the launch control is terminated. For example, after the launch control has been initiated, the launch control is terminated when the vehicle speed reaches a predetermined speed. Alternatively, the launch control is terminated when the vehicle speed reaches the speed desired by the driver and the driver eases off (releases) the accelerator pedal 4, or when the driver presses the brake pedal 3 again.

[0038] In this embodiment of the invention, the vehicle control device, once it has started the execution of launch control as described above, completes the launch control without interrupting it midway. For example, even if, after the execution of launch control has started, the control requirements of the automatic transmission 2 violate the conditions for unsuitability of launch control during the execution of launch control, the launch control will be completed without interruption. Specifically, even if the internal oil temperature of the automatic transmission 2 rises to an unsuitable oil temperature during the execution of launch control, the launch control will be completed without interruption. Therefore, it is possible to avoid the launch control being interrupted against the driver's intention after the driver has started the operation to perform launch control.

[0039] As described above, once launch control is completed in step S6, the routine shown in the flowchart in Figure 2 is terminated.

[0040] Furthermore, in the vehicle control device of this embodiment of the invention, stricter conditions for prohibiting launch control are set than the conditions for unsuitability of launch control as described above. The conditions for prohibiting launch control are thresholds for determining a state in which implementing launch control may cause abnormalities in the vehicle Ve or the automatic transmission 2. These thresholds are predetermined, for example, based on the results of actual vehicle driving experiments or simulations. Examples of such conditions for prohibiting launch control include: (1) The internal oil temperature of the automatic transmission 2 and the torque converter (not shown) is equal to or greater than the prohibited threshold set as a condition for prohibiting implementation. (2) An abnormality has occurred in the oil temperature sensor 6e of the automatic transmission 2, or an abnormality has occurred in the oil temperature signal of the automatic transmission 2. (3) There is an abnormality in the gears of automatic transmission 2. (4) An abnormality has occurred in the wheel speed sensor 6b. (5) An abnormality has occurred in the rotational speed sensor 6a that detects the turbine rotational speed of the torque converter. (6) An abnormality has occurred in the shift range contact (not shown) of the shift device of the automatic transmission 2. (7) An abnormality has occurred in the solenoid valve of the hydraulic control device (not shown) of the automatic transmission 2. These are some examples. Such conditions for prohibiting the implementation of launch control are determined, for example, before the launch control is initiated in step S5 above. They are also determined during the execution of launch control in step S5 above.

[0041] In the vehicle control device of this embodiment of the invention, if any one of the above conditions is met, it is determined that the control requirements of the automatic transmission 2 are in violation of the conditions for prohibiting the implementation of launch control. In that case, it is determined that the implementation of launch control is not possible, and information indicating that the implementation of launch control is not possible is displayed on the display device 5. At the same time, the implementation of launch control is prohibited. If the control requirements of the automatic transmission 2 are in violation of the above conditions for prohibiting the implementation of launch control while launch control is being performed, the launch control is stopped midway in order to prevent malfunction or deterioration of the condition of the automatic transmission 2. Therefore, it is possible to avoid a situation in which the automatic transmission 2 may malfunction or deteriorate due to the continued implementation of launch control.

[0042] As described above, according to the vehicle control device in this embodiment of the invention, when the driver operates the brake pedal 3 and the accelerator pedal 4 to perform launch control, launch control can be performed reliably and appropriately. [Explanation of symbols]

[0043] 1. Engine (Power source: ENG) 2. Automatic transmission (AT) 3. Brake pedal 4. Accelerator pedal 5 Display equipment (notification equipment) 6. Detection Unit 6a Rotation speed sensor (of the detection unit) 6b Wheel speed sensor (of the detection unit) 6c Brake pedal sensor (or brake switch) (of the detection unit) 6d (Detection unit) Accelerator pedal sensor 6e (Detection unit) Oil temperature sensor 6f (Detection unit) Operating mode select switch 7. Controller (ECU) 8. Rear wheels (drive wheels) 9 Propeller shaft 10 Differential gear 11 Drive shaft 12 Front wheels 13. Instrument Panel Vehicle

Claims

1. A vehicle control device comprising a power source, an automatic transmission that transmits torque between the power source and the drive wheels, a brake pedal and an accelerator pedal operated by the driver, and a notification device that informs the driver of predetermined information, wherein, at the time of starting, the device is capable of performing launch control, which generates driving force in the drive wheels in response to the driver's operation of the brake pedal and the accelerator pedal, thereby rapidly starting and accelerating the vehicle, The system includes a controller that controls the aforementioned power source and the aforementioned automatic transmission, and also performs the launch control, The aforementioned controller, Prior to implementing the launch control, at least, a determination is made as to whether or not the launch control should be implemented based on the control requirements of the automatic transmission. If the aforementioned control requirements conflict with predetermined conditions for non-implementation and it is determined that the launch control cannot be implemented, the notification device will inform the driver of this non-implementation and make them aware of it. Since the aforementioned control requirements do not conflict with the aforementioned conditions for non-implementation, it is determined that the launch control can be implemented, and the launch control is executed. Even if the control requirements violate the conditions for non-implementation during the execution of the launch control, the launch control will be completed without being interrupted, and further If the aforementioned control requirements conflict with the more stringent prohibition conditions than the aforementioned non-implementation conditions, the launch control will be deemed unimplementable, and the driver will be notified of this unimplementable condition via the notification device, and the implementation of the launch control will be prohibited. A vehicle control device characterized by the following features.

2. A vehicle control device according to claim 1, The aforementioned controller, As a control requirement, the internal oil temperature of the automatic transmission is obtained. If the internal oil temperature is above the predetermined unsuitable oil temperature for implementation, the launch control is deemed unsuitable. If the internal oil temperature is below the unsuitable oil temperature, the launch control is deemed feasible and the launch control is executed. Even if the internal oil temperature rises during the execution of the launch control, the launch control will be completed without being interrupted. A vehicle control device characterized by the following features.

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