JP2011226441A - Retreat travel control device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety and drivability when a vehicle is retreated and traveled to a safe place if an emergency arises during traveling of the vehicle.SOLUTION: A retreat travel switch 11 is provided in a position enabling operation by a driver. If the driver feels that he/she should stop the vehicle for the safety since any emergency occurs during traveling of the vehicle, when the driver turns on the retreat travel switch 11, a retreat travel relay 20 and an electronic throttle relay 21 are turned off, to switch a vehicle travel mode to a retreat travel mode. Thus, by turning off a power source of an electronic throttle device 18 to close a throttle opening to a retreat travel throttle opening, output of an engine 17 is lowered to suppress vehicle driving power, to make the vehicle retreat travel. Also during the retreat traveling, continuing the operation of the engine 17 enables the driver to operate steering wheel in a power steering device and brake device, and secures braking force during the retreat traveling.

Description

  The present invention relates to an evacuation travel control device for a vehicle equipped with a function of switching a vehicle travel mode to an evacuation travel mode by a driver's operation when any emergency occurs during vehicle travel.

  When an emergency occurs while the vehicle is running and the driver feels it is safer to stop the vehicle, the vehicle is quickly decelerated and the vehicle is evacuated and stopped at a safe place. It is necessary to check.

  Therefore, in Patent Document 1 (Utility Model Registration No. 3150741), in order to stop the engine in an emergency, a push button type emergency stop switch (normally closed switch) is provided at a position where the driver can operate, and driving is performed. When the person feels "emergency", pressing the emergency stop switch forcibly turns off the engine ignition circuit to stop the engine emergency, and then stops the vehicle in a safe place When the emergency stop switch is pushed again after being operated, the power source of the ignition circuit returns to the on state again.

Utility Model Registration No. 3150741

  As described above, in the event of an emergency while the vehicle is running, it is necessary to quickly decelerate the vehicle to a safe place and stop the vehicle at a safe place. When the person presses the emergency stop switch, the engine is stopped immediately, which may cause the steering wheel to become heavy during evacuation and the brakes to become less effective. There is a risk of damage. This is because the power steering device that assists the steering operation force is driven by the hydraulic pressure supplied from the oil pump of the engine, so if the engine stops, the supply of hydraulic pressure from the oil pump is stopped. In addition, the brake booster that increases the braking force is driven by the negative pressure introduced from the intake pipe of the engine, but when the engine stops, the pressure in the intake pipe immediately rises to atmospheric pressure, and the brake booster This is because it becomes impossible to introduce negative pressure into.

  Therefore, the problem to be solved by the present invention is to provide a vehicle evacuation control device capable of improving safety and drivability when the vehicle is evacuated to a safe place during an emergency while the vehicle is traveling.

  In order to solve the above problems, an invention according to claim 1 is a power steering device that assists a steering operation force in a retreat travel control device for a vehicle that drives the vehicle using at least one of an internal combustion engine and an electric motor as a power source; A retreat travel switch provided at a position where the driver can operate, and when the retreat travel switch is operated during vehicle travel, the vehicle travel mode is switched to the retreat travel mode to reduce or reduce the vehicle driving force to 0. The power steering device and the brake device are configured to include a retreat travel control unit that can be operated by a driver and that controls the brake force during retreat travel. In this configuration, the driver can operate the steering wheel during retreat travel and control is performed so as to ensure the braking force during retreat travel, so that safety and drivability during retreat travel can be improved.

  Specifically, as in claim 2, in a system including a brake booster that introduces intake pipe negative pressure of an internal combustion engine to increase the braking force, and an electronic throttle device that controls the throttle opening with an electric actuator. The throttle opening may be controlled to be equal to or less than a predetermined opening by the electronic throttle device so that the vehicle driving force is suppressed by the internal combustion engine during the retreat travel and the negative pressure of the brake booster is secured during the retreat travel. Thus, while the vehicle is decelerated with the engine brake during the evacuation traveling, the negative pressure of the brake booster can be reliably ensured to prevent the brake force from being lowered.

  In this case, as in claim 3, it is preferable to control the throttle opening in an opening range higher than the opening range leading to the engine stall by the electronic throttle device during the retreating travel. As a result, it is possible to prevent the engine from stalling against the driver's intention during the evacuation traveling, and the vehicle can be reliably evacuated to a safe place.

  According to a fourth aspect of the present invention, the drive current of the electric motor may be suppressed or cut off in order to suppress the vehicle driving force with the electric motor during the retreat travel. Or you may make it suppress a vehicle drive force by the regenerative brake by an electric motor during retraction | saving travel like Claim 5. In any case, the vehicle can be decelerated by the electric motor during the retreat travel.

  According to another aspect of the present invention, the operating portion of the retreat travel switch may be configured to be covered with a cover that can be pressed or opened with the fingers of the driver. Thus, it is possible to prevent the driver from inadvertently touching the retreat travel switch and switching the vehicle travel mode to the retreat travel mode against the driver's intention.

  Further, as in claim 7, the hazard lamp may be blinked during the evacuation traveling. As a result, it is possible to notify the following vehicle that the vehicle is being decelerated in an emergency during the evacuation by flashing the hazard lamp, and the safety of the evacuation can be further enhanced.

  Alternatively, as in claim 8, the alarm sound generator may be operated during the retreat travel. Thus, it is possible to notify the surrounding cars and people during the evacuation travel by an alarm sound that the vehicle is being decelerated in an emergency, and the safety of the evacuation travel can be further enhanced.

  Further, if the vehicle is decelerated rapidly during the retreat travel, there is a possibility that the following vehicle may collide. Therefore, as in claim 9, it is preferable to control the vehicle during the retreat travel so that the vehicle is decelerated slowly. Thereby, it is possible to reduce the possibility that the following vehicle will collide at the time of deceleration during retreat.

  Specifically, as in claim 10, the brake device may be operated gently so as to moderate the deceleration of the vehicle during the retreat travel.

  Alternatively, as described in claim 11, the power transmission path of the vehicle may be interrupted during the retreat travel. As a result, acceleration of the vehicle during retreat travel can be reliably prevented, and safety during retreat travel can be further improved.

  Further, as described in claim 12, the retreat travel mode may be canceled when the driver operates the retreat travel switch again after turning off the ignition switch after retreat travel. In this way, the retreat travel mode can be released in a safe state because the retreat travel mode can be canceled after the vehicle is retracted to a safe place and stopped by stopping the internal combustion engine in an emergency during vehicle travel. Can be released.

  Further, as in claim 13, the driver may be warned when the driver continues to step on the accelerator pedal after retreating. As a cause of occurrence of an emergency situation, there is a case where the driver makes a mistake in stepping on the brake pedal and the accelerator pedal. Therefore, the driver can be warned and prompted to switch to the brake pedal.

FIG. 1 is a perspective view illustrating an installation example of a retreat travel switch according to the first embodiment of the present invention. FIG. 2 is a plan view illustrating a configuration example in which the operation unit of the retreat travel switch according to the first embodiment is covered with a cover. FIG. 3 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the first embodiment. FIG. 4 is a time chart for explaining on / off switching of the retreat travel switch, retreat travel relay, electronic throttle relay, and electronic throttle device according to the first embodiment. FIG. 5 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the second embodiment. FIG. 6 is a flowchart showing a flow of processing of the vehicle travel mode switching program according to the second embodiment. FIG. 7 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the third embodiment. FIG. 8 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the fourth embodiment. FIG. 9 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the fifth embodiment. FIG. 10 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the sixth embodiment. FIG. 11 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the seventh embodiment. FIG. 12 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the eighth embodiment. FIG. 13 is a block diagram illustrating a circuit configuration of the retreat travel control apparatus according to the ninth embodiment.

  Hereinafter, nine types of Examples 1 to 9 embodying the mode for carrying out the present invention will be described.

  A first embodiment of the present invention will be described with reference to FIGS. The first embodiment is an embodiment in which the present invention is applied to a vehicle equipped with an internal combustion engine (engine) as a power source.

  As shown in FIG. 1, the retreat travel switch 11 is provided at a position (for example, dashboard 12, center console box 13, steering column, etc. in front of the driver's seat) where a driver sitting in the driver's seat of the vehicle can operate. . The retreat travel switch 11 is constituted by, for example, a push button switch. As shown in FIG. 2, the push button portion (operation unit) of the retreat travel switch 11 is covered with a cover 14 made of plastic, etc. The push button portion of the evacuation travel switch 11 is not easily touched, but in an emergency, when the cover 14 is strongly pressed with the finger of the driver, the cover 14 is broken and the push button portion of the evacuation travel switch 11 is pushed by the driver. It can be pushed with fingers. In the first embodiment, the cover 14 is formed with a groove-shaped thin portion 14a for easy cracking, for example, in a cross shape. Or you may form the cover 14 whole thinly.

  As shown in FIG. 3, an engine 17 serving as a power source of the vehicle is provided with an electronic throttle device 18 that controls the throttle opening degree by an electric actuator such as a motor. During retreat travel, the electronic throttle device 18 is turned off, so that the throttle opening is held by the spring at the retreat travel throttle opening (opener opening). Here, the throttle opening for evacuation travel is an opening range higher than the opening range leading to engine stall, and a minimum intake air amount necessary for evacuation travel or a slightly larger intake air amount can be secured. Although the throttle opening is set and not shown, the retracting travel throttle opening is adjusted mechanically in conjunction with the amount of depression of the accelerator pedal by the opener mechanism during retreat travel. In addition, although not shown, a brake booster that introduces intake pipe negative pressure to increase the braking force of the brake device, a power steering device that assists the operating force of the handle 16, and the like are provided.

  On the other hand, the engine ECU 19 controls the ignition timing and the fuel injection amount according to the engine operating state such as the intake air amount detected by various sensors provided in the engine 17, the engine rotation speed, the cooling water temperature, and the electronic throttle device 18. The throttle opening (intake air amount) is controlled. The electronic throttle device 18 is turned on / off by the engine ECU 19. When the electronic throttle device 18 is turned off, the throttle opening is held at the retreat travel throttle opening.

  The engine ECU 19 is supplied with a power supply voltage VB fed from a vehicle-mounted battery via an evacuation travel relay 20 and an electronic throttle relay 21. The evacuation traveling relay 20 is a normally closed type (normally closed) relay, and the electronic throttle relay 21 is a normally open type (normally open) relay. The retreat travel switch 11 is connected to the retreat travel relay 20. The retreat travel switch 11 is a normally open (normally open) push button switch. As shown in FIG. 4, when the retreat travel switch 11 is in an OFF state, the contact travel of the normally closed retreat travel relay 20 is between the contacts. Is maintained in the on state, and the coil of the normally open type electronic throttle relay 21 is energized to maintain the contact between the contacts of the electronic throttle relay 21 in the on state. As a result, power is supplied from the engine ECU 19 to the electronic throttle device 18.

  Thereafter, when the retreat travel switch 11 is turned on, the coil of the normally closed retreat travel relay 20 is energized, the contact between the retreat travel relay 20 is turned off, and the normally open electronic throttle relay 21 is turned on. Is turned off and the contact between the contacts of the electronic throttle relay 21 is turned off. As a result, the engine ECU 19 switches the vehicle travel mode to the retreat travel mode, turns off the electronic throttle device 18, closes the throttle opening to the retreat travel throttle opening, and lowers the output of the engine 17. In addition to suppressing the vehicle driving force, the operation of the engine 17 is continued so that the driver can operate the handle 16 of the power steering device and the brake device and ensure the braking force during the retreat travel. The function of the engine ECU 19 corresponds to the evacuation travel control means in the claims.

  In the first embodiment, the retreat travel switch 11 is a self-holding switch. When the retreat travel switch 11 is turned on, the retreat travel switch 11 is held in the on state. In this state, the retreat travel switch 11 is turned on again. When operated, the retreat travel switch 11 returns from the on state to the off state.

  During normal vehicle travel, the retreat travel switch 11 is maintained in the off state, and both the normally closed retreat travel relay 20 and the normally open electronic throttle relay 21 are retained in the on state. 18 is supplied with power, and throttle control is performed for feedback control of the actual throttle opening in accordance with the target throttle opening.

  When an emergency occurs while the vehicle is running and the driver feels it is safer to stop the vehicle, the driver strongly pushes the cover 14 with his / her finger to break the cover 14, and the evacuation travel switch 11 Is pushed to turn on the retreat travel switch 11. Thereby, the contact between the normally closed retreat travel relay 20 is turned off, and the contact between the normally open electronic throttle relay 21 is turned off. Thus, the engine ECU 19 switches the vehicle travel mode to the retreat travel mode, turns off the electronic throttle device 18 and closes the throttle opening to the retreat travel throttle opening, thereby reducing the output of the engine 17. Thus, the vehicle driving force is suppressed and the vehicle is evacuated. By continuing the operation of the engine 17 even during the retreat travel, the driver can operate the handle 16 of the power steering device and the brake device, and the braking force during the retreat travel is ensured.

  During the retreat travel, the retreat travel switch 11 is maintained in the on state, the power source of the electronic throttle device 18 is maintained in the off state, and the throttle opening is limited to the retreat travel throttle opening. When the vehicle is evacuated to a safe place and stopped, when the ignition switch is turned off to stop the engine 17 and then the evacuation travel switch 11 is turned on again, the evacuation travel switch 11 is changed from the on state to the off state. Return to. As a result, the evacuation relay 20 returns to the on state, and the power source of the electronic throttle device 18 returns to the on state. Thereafter, if the driver turns on the ignition switch to restart the engine 17, normal vehicle travel is possible.

  By the way, in the configuration of Patent Document 1 described above, if the driver pushes and operates the emergency stop switch while the vehicle is running, the engine is urgently stopped. Therefore, there is a possibility that the vehicle cannot be evacuated to a safe place (in a safe place). There is a possibility that the vehicle will stop before it reaches), and there is a concern that the engine will stop during evacuation and the steering wheel during evacuation will become heavy and the brake will be less effective. There is a risk that safety and drivability during retreating may be impaired.

  In contrast, in the first embodiment, when the driver presses the retreat travel switch 11 in an emergency while the vehicle is traveling, the vehicle travel mode is switched to the retreat travel mode, and the throttle opening is set to the retraction travel throttle opening. Therefore, during the retreat travel, the operation of the engine 17 is continued in a state where the output of the engine 17 is reduced and the vehicle driving force is suppressed. This ensures that the vehicle can be evacuated to a safe place in the event of an emergency while the vehicle is running, and that the intake pipe negative pressure introduced into the brake booster during the evacuation can be secured to ensure the braking force and the engine oil. The hydraulic pressure supplied from the pump to the power steering device can be secured, and the assisting force that allows the driver to operate the handle 16 can be secured, so that the safety and drivability during the retreat travel can be improved.

  In addition, since the throttle opening during retreat travel (throttle opening for retreat travel) is controlled in an opening range that is higher than the opening range that leads to engine stall, the engine may be contrary to the driver's intention during retreat travel. Stalling can be prevented, and the vehicle can be reliably evacuated to a safe place.

  Further, even in the conventional system, if the configuration includes the electronic throttle relay 21, the present invention can be implemented by retrofitting the circuit of the retreat travel switch 11 and the retreat travel relay 20, The circuit of the retreat travel switch 11 and the retreat travel relay 20 can be unitized and commercialized as an optional component for retreat travel.

  In the first embodiment, the cover 14 that covers the push button portion of the retreat travel switch 11 is formed so as to be able to be pushed and split with the fingers of the driver, but the cover 14 may be opened and closed.

  In the first embodiment, the vehicle travel mode is switched to the retreat travel mode by turning off the retreat travel relay 20 by pressing the retreat travel switch 11, but the embodiment of the present invention shown in FIGS. 5 and 6 is implemented. In Example 2, the retreat travel relay 20 of the first embodiment is omitted, the retreat travel switch 11 is connected to the engine ECU 19, and an operation signal (ON signal) of the retreat travel switch 11 is input to the engine ECU 19. The engine ECU 19 switches the vehicle travel mode to the retreat travel mode according to the vehicle travel mode switching program of FIG. Other matters are the same as those in the first embodiment. Hereinafter, the processing content of the vehicle travel mode switching program of FIG. 6 will be described.

  The vehicle travel mode switching program shown in FIG. 6 is repeatedly executed at a predetermined period during the power-on period of the engine ECU 19 (while the ignition switch is on), and serves as an evacuation travel control means in the claims. When this program is started, first, in step 101, it is determined whether or not the retreat travel switch 11 is turned on. If the retreat travel switch 11 is in the off state, the process proceeds to step 102 and the normal vehicle travel mode is entered. Is determined. In this case, the process proceeds to step 103, and the coil of the normally open type electronic throttle relay 21 is energized to keep the contact between the electronic throttle relay 21 in the ON state. The normal power supply control 18 is maintained in the on state and the normal throttle control is executed.

  On the other hand, if it is determined in step 101 that the retreat travel switch 11 is turned on, the process proceeds to step 105 to determine the retreat travel mode. In this case, the routine proceeds to step 106 where the energization of the coil of the normally open type electronic throttle relay 21 is turned off to turn off the contact between the electronic throttle relay 21 and at the next step 107, the electronic throttle device is turned on. 18 is turned off to close the throttle opening to the retreat travel throttle opening, and the output of the engine 17 is reduced to suppress the vehicle driving force and the driver handles the power steering device and the brake device. The operation of the engine 17 is continued so that the braking force during the retreat travel can be secured.

  Also in the second embodiment described above, the same effects as those of the first embodiment can be obtained.

  A third embodiment of the present invention shown in FIG. 7 is an embodiment in which the present invention is applied to an electric vehicle equipped with a motor 31 (electric motor) as a power source. The motor 31 is driven by an inverter 33 using a battery 32 mounted on the vehicle as a power source. In the normal vehicle travel mode, the on / off operation of each switching element of the inverter 33 is controlled by the inverter control ECU 34 (retreat travel control means).

  Further, in the third embodiment, the retreat travel switch 11 having the same configuration as that of the first embodiment is connected to the inverter 33 via the retreat travel inverter control circuit 34. When the driver turns on the retreat travel switch 11, an on signal of the retreat travel switch 11 is input to the retreat travel inverter control circuit 35. Thereby, the inverter control circuit 35 for evacuation travel stops the switching operation of each switching element of the inverter 33, interrupts the drive current of the motor 31, and switches the vehicle travel mode to the evacuation travel mode. During the retreat travel, the vehicle drive force is suppressed by cutting off the drive current of the motor 31, and the power steering device and the brake device can be operated by the driver so that the driver can operate the handle 16 and the brake force during the retreat travel is ensured. To control.

  In the third embodiment described above, even in an electric vehicle, the evacuation travel switch 11 and the evacuation travel inverter control circuit 34 are added to suppress the vehicle driving force by cutting off the drive current of the motor 31 during the evacuation travel. In addition, in order to control the power steering device and the brake device so that the driver can operate the handle 16 and to secure the braking force during the retreat travel, the vehicle is retreated to a safe place in an emergency during the travel of the vehicle. Safety and drivability can be improved.

  In the third embodiment, the vehicle travel mode is switched to the retreat travel mode by inputting the operation signal (ON signal) of the retreat travel switch 11 to the retreat travel inverter control circuit 34. However, the present invention shown in FIG. In the fourth embodiment, an operation signal (ON signal) of the retreat travel switch 11 is input to the inverter control ECU 34 to switch the vehicle travel mode to the retreat travel mode.

  In the fourth embodiment, when the retreat travel switch 11 is turned on, the inverter control ECU 34 stops the switching operation of each switching element of the inverter 33 and cuts off the drive current of the motor 31 to change the vehicle travel mode to the retreat travel mode. Switch. During the retreat travel, the vehicle drive force is suppressed by cutting off the drive current of the motor 31, and the power steering device and the brake device can be operated by the driver so that the driver can operate the handle 16 and the brake force during the retreat travel is ensured. To control.

Also in the fourth embodiment described above, the same effect as in the third embodiment described above can be obtained.
In the third and fourth embodiments described above, the vehicle driving force is suppressed by cutting off the driving current of the motor 31 during the retreat travel. However, the drive current of the motor 31 is suppressed (reduced) during the retreat travel. By doing so, the vehicle driving force may be suppressed.

  Alternatively, the vehicle driving force may be suppressed by regenerative braking by the motor 31 during retreat travel.

  The fifth embodiment of the present invention shown in FIG. 9 is an embodiment in which the present invention is applied to a hybrid electric vehicle using both the engine 17 and the motor 31 as a power source. The fifth embodiment is a combination of the second embodiment (FIG. 5) and the fourth embodiment (FIG. 8). The control system of the engine 17 and the control system of the motor 31 are the same as those of the second and fourth embodiments. It is the same composition as.

  In the fifth embodiment, the vehicle travel mode is switched to the retreat travel mode by inputting an operation signal (ON signal) of the retreat travel switch 11 to both the engine ECU 19 and the inverter control ECU 34. When the driver turns on the retreat travel switch 11, the electronic throttle relay 21 is turned off, the power source of the electronic throttle device 18 is turned off, and the throttle opening is closed to the retreat travel throttle opening. While the output is reduced, the evacuation traveling inverter control circuit 35 stops the switching operation of each switching element of the inverter 33 and interrupts the drive current of the motor 31.

  Also in the hybrid electric vehicle of the fifth embodiment described above, it is possible to improve safety and drivability when the vehicle is evacuated to a safe place during an emergency while the vehicle is running.

  In addition, when applying this invention to a hybrid electric vehicle, it is not limited to the structure which combined Example 2 (FIG. 5) and Example 4 (FIG. 8), Example 1 (FIG. 3) and Example 3 (FIG. 7) may be combined, or the first embodiment (FIG. 3) and the fourth embodiment (FIG. 8) may be combined, or the second embodiment (FIG. 5) and the third embodiment (FIG. 7) may be combined. May be combined.

A sixth embodiment of the present invention shown in FIG. 10 is an embodiment implemented in combination with any one of the first to fifth embodiments.
In the sixth embodiment, the retreat travel switch 11 is connected in parallel to the hazard switch 38 connected to the hazard lamp control circuit 37 that controls the blinking operation of the hazard lamp 36. When the driver turns on the retreat travel switch 11 to switch the vehicle travel mode to the retreat travel mode, the hazard lamp control circuit 37 causes the hazard lamp 36 to blink. As a result, it is possible to notify the following vehicle that the vehicle is being decelerated in an emergency during the evacuation travel by blinking the hazard lamp 36, and the safety of the evacuation travel can be further enhanced.

  Further, the alarm sound generator may be operated during the retreat travel. Thereby, it is possible to notify the surrounding cars and people during the evacuation travel by warning sound that the vehicle is being decelerated in an emergency, and the safety of the evacuation travel can be further enhanced.

  The seventh embodiment of the present invention shown in FIG. 11 is an embodiment in which the present invention is applied to a vehicle in which the driving force of the engine 17 is changed by the automatic transmission 41.

  In the seventh embodiment, the retreat travel switch 11 is connected in parallel to the A / T-ECU 42 (retreat travel control means) that controls the speed change operation of the automatic transmission 41. When the driver turns on the retreat travel switch 11 to switch the vehicle travel mode to the retreat travel mode, the A / T-ECU 42 releases the engagement of the friction engagement elements (brake and clutch) inside the automatic transmission 41. This cuts off the transmission of driving force between the input and output shafts. Thus, acceleration of the vehicle during the evacuation traveling can be surely prevented, and the operation of the engine 17 is continued during the evacuation traveling, so that the intake pipe negative pressure introduced into the brake booster during the evacuation traveling is ensured and the braking force is maintained. In addition, the oil pressure supplied from the engine oil pump to the power steering system can be secured to ensure the assist force that allows the driver to operate the steering wheel 16, thereby improving safety and drivability during retreating. Can be made.

  The eighth embodiment of the present invention shown in FIG. 12 is an embodiment in which the present invention is applied to a vehicle equipped with an electronically controlled brake device 43.

  In the eighth embodiment, the retreat travel switch 11 is connected to a brake ECU 44 (retreat travel control means) that controls the electronically controlled brake device 43. When the driver turns on the retreat travel switch 11 to switch the vehicle travel mode to the retreat travel mode, the brake ECU 43 is operated gently so that the brake ECU 44 moderates the deceleration of the vehicle during the retreat travel. Control. Thereby, it is possible to reduce the possibility that the following vehicle will collide at the time of deceleration during retreat.

  The ninth embodiment of the present invention shown in FIG. 13 is an embodiment in which the engine ECU 19 can detect the operation amount of the accelerator pedal 45 and the state of the retreat travel switch 11. If the engine ECU 19 detects that the accelerator pedal 45 continues to be depressed even though the retreat travel switch 11 is pressed, the engine ECU 19 (retreat travel control means) instructs the meter ECU 46 to issue a warning. Then, a warning message is displayed from the meter ECU 46 to the meter 47 by a display or sound. As a result, it is possible to make the driver aware when the driver makes a mistake in pressing the brake pedal and the accelerator pedal 45 that are not shown in the figure.

  The first to ninth embodiments described above may be implemented in combination as appropriate.

  DESCRIPTION OF SYMBOLS 11 ... Retraction travel switch, 14 ... Cover, 16 ... Handle, 17 ... Engine (internal combustion engine), 18 ... Electronic throttle device, 19 ... Engine ECU (retraction travel control means), 20 ... Relay for retreat travel, 21 ... Electronic throttle Relay 31, motor (electric motor) 32, battery 33, inverter 34, inverter control ECU (retraction travel control means) 35, inverter control circuit for retreat travel, 36 hazard lamp, 37 hazard control circuit , 38 ... Hazard switch, 41 ... Automatic transmission, 42 ... A / T-ECU (retraction travel control means), 43 ... Electronically controlled brake device, 44 ... Brake ECU (retraction travel control means), 45 ... Accelerator pedal 46 ... Meter ECU (evacuation travel control means) 47 ... Meter

Claims (13)

In a vehicle evacuation control device for driving a vehicle using at least one of an internal combustion engine and an electric motor as a power source,
A power steering device for assisting steering operation force,
A retreat travel switch provided at a position where the driver can operate,
When the retreat travel switch is operated during vehicle travel, the vehicle travel mode is switched to the retreat travel mode to suppress or reduce the vehicle drive force, and the driver can handle the power steering device and the brake device. A retreat travel control device for a vehicle, comprising: retreat travel control means for controlling to ensure a braking force during retreat travel. A brake booster that introduces intake pipe negative pressure of the internal combustion engine to increase the braking force;
An electronic throttle device for controlling the throttle opening with an electric actuator,
The retreat travel control means suppresses the vehicle driving force by the internal combustion engine during retreat travel and sets the throttle opening to a predetermined opening by the electronic throttle device so as to ensure a negative pressure of the brake booster during retreat travel. The vehicle evacuation travel control device according to claim 1, which is controlled as follows.   3. The retreat of the vehicle according to claim 2, wherein the retreat travel control means controls the throttle opening in an opening range higher than an open range that reaches an engine stall by the electronic throttle device during the retreat travel. Travel control device.   The vehicle according to any one of claims 1 to 3, wherein the retreat travel control means suppresses or cuts off a drive current of the electric motor in order to suppress a vehicle driving force with the electric motor during retreat travel. Retreat travel control device.   The vehicle retreat travel control device according to any one of claims 1 to 4, wherein the retreat travel control means suppresses the vehicle driving force by regenerative braking by the electric motor during retreat travel.   6. The retreat travel control device for a vehicle according to claim 1, wherein the operating portion of the retreat travel switch is covered with a cover that can be pressed and opened with a finger of a driver.   7. The retreat travel control device for a vehicle according to claim 1, wherein the retreat travel control means blinks a hazard lamp during retreat travel.   The retreat travel control device for a vehicle according to any one of claims 1 to 7, wherein the retreat travel control means operates an alarm sound generating device during retreat travel.   The vehicle retreat travel control device according to any one of claims 1 to 8, wherein the retreat travel control unit performs control so as to moderate deceleration of the vehicle during retreat travel.   The vehicle retreat travel control device according to claim 9, wherein the retreat travel control unit gently operates the brake device so as to moderate the deceleration of the vehicle during retreat travel.   The vehicle retreat travel control device according to any one of claims 1 to 10, wherein the retreat travel control means blocks a power transmission path of the vehicle during retreat travel.   The retreat travel control unit releases the retreat travel mode when the driver operates the retreat travel switch again after turning off the ignition switch after the retreat travel. The vehicle evacuation travel control device described in 1.   The vehicle retreat travel control device according to any one of claims 1 to 12, wherein the retreat travel control means issues a warning to the driver when the driver continues to step on the accelerator pedal during retreat travel.

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