JP6288448B2 - Vehicle shift control device - Google Patents

Description

  The present invention relates to a shift device for a transmission of a vehicle.

  2. Description of the Related Art In transmissions mounted on vehicles, transmissions that perform a shift operation using a momentary shift lever have been developed. In the transmission, since the shift range is selected by detecting the operation of the shift lever with a switch, a sensor, etc., it is small by shortening the operation movement distance of the shift lever or reducing the operation force. Quick shift operation with force is possible.

However, in such a momentary shift lever, there is a high possibility that a shift operation will be performed unintentionally due to, for example, a passenger's limbs coming into contact with the shift lever. Therefore, for example, as described in Patent Document 1, there is a device equipped with a safety device that permits switching to the shift range when the operation position of the shift lever is maintained for a predetermined time.
In addition, when switching to a predetermined shift range, for example, when switching from a parking range to a drive range or a reverse range, many vehicles are equipped with a safety device that permits switching after depressing a brake by a predetermined amount or more.

Patent No. 4650355

  However, in a vehicle equipped with a safety device that allows the shift range to be switched by depressing the brake as described above, if the brake depressing amount that permits the switching is set to be large, a quick shift becomes impossible and the operability is lowered. On the other hand, if the brake depression amount that permits switching is set to be small, there is a possibility that unintended switching is performed when the shift lever is touched as described above, and safety may be reduced.

  The present invention has been made to solve such a problem, and the object of the present invention is to appropriately set a brake depression amount that permits switching of the shift range to achieve both operability and safety. The object is to provide a shift control device for a vehicle.

To achieve the above object, the shift control device for a vehicle according to claim 1 is mounted on a vehicle, possess at least a parking range and a drive range and a neutral range to a shift range, the operation for switching the operation of the shift range device A shift control device for a transmission, which is a momentary shift lever that automatically returns to a predetermined position when not operated, and the parking range when the brake depression amount of the vehicle is less than a predetermined value. When the shift lever is operated to switch from the parking range to the neutral range, and to switch from the parking range to the drive range. The predetermined value is set more than when the shift lever is operated. A switching depression amount changing unit for listening set, characterized by comprising a.

According to a second aspect of the present invention, there is provided the vehicle shift control device according to the first aspect , wherein the transmission further includes a reverse range in the shift range, and the switching step amount changing unit is changed from the parking range to the reverse range. When the shift lever is operated so as to switch, the predetermined value is set larger than when the shift lever is operated so as to switch from the parking range to the drive range.

Also, the shift control device for a vehicle according to claim 3, in claim 1 or 2, when operating the operation device of the transmission to switch from the parking range to another shift range, the brake depression amount is An informing device for informing when it is less than the predetermined value is provided.

According to the shift control device for a vehicle according to claim 1 of the present invention, when the shift lever to switch from the parking range to the neutral range has been operated, than when the shift lever from the parking range to the drive range is operated However, the shift range cannot be changed unless the brakes are depressed firmly. Therefore, it is difficult to switch from the parking range to the neutral range that does not require quick shifting, and safety can be improved, and it is easy to switch to the drive range, enabling quick start.

According to the shift control apparatus for a vehicle according to claim 2 of the present invention, when the shift lever is operated so as to switch from the parking range to the reverse range, the shift lever is operated from the parking range to the drive range. However, the shift range cannot be changed unless the brakes are depressed firmly. Therefore, it is difficult to switch from the parking range to the reverse range, and safety can be improved, and switching to the drive range can be facilitated to enable quick start.

According to the vehicle shift control apparatus of the third aspect of the present invention, when the shift lever is operated from the parking range to another shift range, the notification means notifies when the brake depression amount is less than a predetermined value. Therefore, it is possible to permit switching by encouraging the driver to depress the brake strongly.

It is explanatory drawing which shows the operation direction of the shift lever of the vehicle which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the shift control apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the setting point of the parking cancellation | release permission brake depression amount in the 1st reference form in a vehicle control unit. It is a flowchart which shows the setting point of the parking cancellation | release permission brake depression amount in 1st Embodiment in a vehicle control unit. It is a flowchart which shows the setting point of the parking cancellation | release permission brake depression amount in the 2nd reference form in a vehicle control unit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing an operation direction of a shift lever of a vehicle according to an embodiment of the present invention.
The vehicle equipped with the shift control device in the embodiment of the present invention is a plug-in hybrid vehicle, and is equipped with a driving motor.

In the vehicle of this embodiment, the shift lever 1 (operation device) of the transmission that indicates the shift range (shift stage) is a momentary operation lever.
As shown in FIG. 1, the shift lever 1 is located at a home position 5 (predetermined position) when not operated. The position moved from the home position 5 in the lateral direction (direction approaching the driver) is the neutral position (N), and the position moved downward from the neutral position is moved upward from the drive position (D) and neutral position. The moved position is the reverse position (R). A position moved downward from the home position 5 is a regenerative brake position (B) where regenerative braking is performed. When operating the shift range to the neutral range, the shift lever 1 is positioned at the neutral position and maintained for a predetermined time to switch to the neutral range.

Further, a parking switch 2 is provided at the support portion of the shift lever 1. The parking switch 2 is a push button switch. When the operating position of the shift lever 1 is the home position 5, the parking switch 2 is switched to the parking range by pressing the parking switch 2, and parking lock is performed.
FIG. 2 is a block diagram showing the configuration of the shift control apparatus according to one embodiment of the present invention.

  As shown in FIG. 2, the shift control device of this embodiment controls the operation of a vehicle control unit 10 that performs overall control of the vehicle, a parking lock actuator 11 that is an actuator that performs parking lock, and a parking lock actuator. The parking lock control unit 12 is configured to include a motor control unit 13 that controls the operation of the travel drive motor.

  The vehicle control unit 10 receives the operation information of the parking switch 2, the shift lever 1 and the brake pedal 3, and other vehicle information and other operation information 4 which is input from the user, and from the parking lock control unit 12. Information on the parking lock state is input. From the vehicle control unit 10, a parking lock request (P lock request) or a parking lock release request (P lock release request) is output to the parking lock control unit 12, and a target output torque of the motor is output to the motor control unit 13. Then, the parking lock actuator 11 is controlled to operate (ACT operation request) and the output torque of the motor is controlled. Further, the parking lock control unit 12 receives an operation state (ACT operation state) of the actuator from the parking lock actuator 11, and based on this operation state, information on the parking lock state (P lock state) is sent to the vehicle control unit 10. ) Is output.

The vehicle control unit 10 is provided with a shift lever position determination unit 20, a brake depression amount determination unit 21, and a shift range determination unit 22.
The shift lever position determination unit 20 receives operation information from the parking switch 2 and the shift lever 1 and determines the operation position of the shift lever 1.
The brake depression amount determination unit 21 receives the operation information of the brake pedal 3 and determines the brake depression amount.

  The shift range determination unit 22 inputs the operation position of the shift lever 1 from the shift lever position determination unit 20 and the brake depression amount from the brake depression amount determination unit 21, and also inputs other vehicle information and operation information. Determine. Further, based on the determined shift range, target output torque control information is output to the motor control unit 13 to perform drive control of the motor.

  Further, the shift range determination unit 22 controls the parking lock control unit 12 to perform parking release control. In the parking release control, when changing from the parking range to another shift range, if the brake depression amount Qb is greater than or equal to the parking release permission brake depression amount Qbp, the parking lock is released and switching to another shift range is permitted. When the parking release permission brake depression amount Qbp (predetermined value) is less, the parking lock actuator 11 is controlled to maintain the parking lock. It should be noted that the vehicle control unit 10 that performs control to maintain the parking lock when the brake depression amount Qb is less than the parking release permission brake depression amount Qbp, that is, to control switching from the parking range to another shift range, The control unit 12 and the parking lock actuator 11 correspond to the shift switching restricting portion of the present invention.

  Further, the vehicle is provided with a notification device 25 on an operation panel or the like. The notification device 25 has a function of notifying the driver by, for example, a lamp, various displays, a buzzer, voice, or the like. The notification device 25 is controlled by the vehicle control unit 10, and when the shift lever 1 is operated by the shift range determination unit 22 to switch from the parking range to another shift range, the brake depression amount Qb is set to the parking release permission brake depression. When it is determined that the amount is less than Qbp, for example, control is performed so as to notify the driver that the brake pedal 3 is strongly depressed.

Furthermore, shea Futorenji determination unit 22 (corresponding to the switching operation amount changing unit) The parking release permission brake depression amount Qbp input operation to change based on from the vehicle state or a user.
FIG. 3 is a flowchart showing a setting procedure of the parking release permission brake depression amount Qbp in the first reference form in the vehicle control unit 10.

This control is repeatedly executed in the vehicle power ON state.
First, in step S10, it is determined whether or not the vehicle state is READY-ON. This READY-ON is a so-called ready-on state in which the motor can be driven immediately by depressing the accelerator. If READY-ON, the process proceeds to step S20. If it is not READY-ON, the process proceeds to step S30. When the present invention is applied to a vehicle that uses an engine as a travel drive source, READY-ON may be determined as the engine operating state.

In step S20, the parking release permission brake depression amount Qbp is set to a predetermined amount A. The predetermined amount A may be set to a parking release permission brake stepping amount that is set to be constant in the prior art such as Patent Document 1. Then, this routine ends.
In step S30, it is determined whether or not the vehicle state is IG-ON. This IG-ON is a so-called ignition-on state and energizes systems other than the vehicle drive system, but does not energize the drive system and does not drive the motor even when the accelerator is depressed. If it is IG-ON, the process proceeds to step S40. If it is not IG-ON, this routine is terminated. In addition, what is necessary is just to discriminate | determine as IG-ON as an accessory ON state which supplies with electricity to an accessory apparatus, when applying this invention to the vehicle which uses an engine as a driving source.

As described above, in the first reference embodiment, the parking release permission brake depression amount Qbp is set to a different value depending on whether the vehicle state is READY-ON or IG-ON, and is IG-ON. Since the predetermined amount B set in the case of READY-ON is larger than the predetermined amount A set in the case of IG-ON, the parking range is changed to another shift range than the case of READY-ON. It becomes difficult to do. In the case of READY-ON, there are many opportunities to switch from the parking range to the drive range or the reverse range, whereas in the case of IG-ON, the shift lever 1 moves from the parking range to the drive range or the reverse range. This is because there is a high possibility that the operation is not intended as if the shift lever 1 was accidentally pushed and moved even if it was operated so as to be switched to. In such a situation where there is a high possibility that the operation is not intended, it is possible to prevent an unintended movement of the vehicle by preventing switching from the parking range to another shift range unless the brake pedal 3 is pressed strongly. Can be increased. Furthermore, even when the power state of the vehicle is IG-ON, it is possible to switch from the parking range to another shift range by strongly depressing the brake pedal 3, without impairing the convenience for the user. For example, even if the vehicle has a problem and cannot be made READY-ON and the vehicle is towed, the vehicle can be moved by switching from the parking range to the neutral range with IG-ON. On the other hand, in the case of READY-ON, since the parking release permission brake stepping amount Qbp is set smaller than in the case of IG-ON, it becomes easier to switch and quick switching is possible, improving operability. To do.

Next, the first embodiment of the present invention for setting the parking release permission brake depression amount Qbp will be described with reference to FIG.
FIG. 4 is a flowchart showing a setting procedure of the parking release permission brake depression amount Qbp in the first embodiment in the vehicle control unit 10. In addition, this figure also shows the shift range switching determination control procedure after setting the parking release permission brake depression amount Qbp.

This control is repeatedly executed when the vehicle power is turned on.
First, in step S100, it is determined whether or not the current shift range is a parking range. If it is in the parking range, the process proceeds to step S110. If the shift range is other than the parking range, the process returns to step S100.
In step S110, it is determined whether or not the operation position of the shift lever 1 is the neutral position (N). If it is in the neutral position, the process proceeds to step S120. If it is not the neutral position, the process proceeds to step S130.

In step S120, the parking release permission brake depression amount Qbp is set to a predetermined amount E. Then, the process proceeds to step S170.
In step S130, it is determined whether or not the operation position of the shift lever 1 is the drive position (D). If it is the drive position, the process proceeds to step S140. If it is not the drive position, the process proceeds to step S150.

In step S140, the parking release permission brake depression amount Qbp is set to a predetermined amount F. Then, the process proceeds to step S170.
In step S150, it is determined whether or not the operation position of the shift lever 1 is the reverse position (R). If it is the reverse position, the process proceeds to step S160. If it is not the reverse position, the process proceeds to step S170.

In step S160, the parking release permission brake depression amount Qbp is set to a predetermined amount G. The magnitude relationship among the predetermined amount E, the predetermined amount F, and the predetermined amount G may be set to F <G <E. Further, the predetermined amount F may be set to, for example, a parking release permission brake stepping amount that is set to be constant in the prior art. Then, the process proceeds to step S170.
In step S170, the brake depression amount Qb of the brake pedal 3 is read, and it is determined whether or not the brake depression amount Qb is equal to or greater than the parking release permission brake depression amount Qbp. If the brake depression amount Qb is equal to or greater than the parking release permission brake depression amount Qbp, the process proceeds to step S180. If it is less than the parking release permission brake depression amount Qbp, the process proceeds to step S200.

In step S180, a parking lock release signal is output to the parking lock control unit 12 to release the parking lock. Then, the process proceeds to step S190.
In step S190, the shift range corresponding to the operation position of the shift lever 1 is switched. Then, this routine ends.

In step S200, the shift range is maintained at the parking range. That is, the parking lock request to the parking lock control unit 12 is maintained. Then, this routine ends.
As described above, in the first embodiment, the parking release permission brake depression amount Qbp is set according to the operation position of the shift lever 1. Specifically, the parking release permission brake depression amount Qbp is set to a different value depending on whether the shift lever 1 is operated from the parking position to the neutral position, the drive position, or the reverse position. In the present embodiment, the predetermined amount F that is set when the shift lever 1 is operated to the drive position is the smallest, and the predetermined amount G that is set when the shift lever 1 is operated to the reverse position is greater than the predetermined amount F, and is operated to the neutral position. The predetermined amount E set in this case is set larger than the predetermined amount G. Therefore, when shifting from the parking range to the neutral range, drive range, or reverse range, the brake must be depressed most strongly when shifting to the neutral range, and most when shifting to the drive range. Switch with a weak brake. This is because the operation of shifting from the parking range to the drive range is an operation normally performed when the vehicle starts, so that the vehicle can be started quickly by facilitating the shift change as described above. On the other hand, the operation to shift change from the parking range to the reverse range is less necessary to advance the vehicle than the forward range even if the vehicle is intended to move backwards. It is difficult to prevent the vehicle from starting unintentionally and improve safety. The shift change operation from the parking range to the neutral range does not require the vehicle to start, so it does not require a quick change of the shift range. It is possible to prevent unintended shift changes due to contact with the door and to improve safety. Furthermore, if the brake is depressed hard, it is possible to shift to the neutral range, so that the convenience for the user is not impaired.

Next, a second reference mode for setting the parking release permission brake depression amount Qbp will be described with reference to FIG.
FIG. 5 is a flowchart showing a setting procedure of the parking release permission brake depression amount Qbp in the second reference form in the vehicle control unit 10.
This control is repeatedly executed when the vehicle power is turned on.

First, in step S300, it is determined whether or not the current shift range is a parking range. If it is in the parking range, the process proceeds to step S310. If the shift range is other than the parking range, the process returns to step S300.
In step S310, it is determined whether or not the vehicle is on a slope (located on a slope). Whether or not the vehicle is on a hill is determined by, for example, providing a vehicle with an inclination angle sensor (inclination determination unit) and inputting the inclination angle detected by the inclination angle sensor to the vehicle control unit 10 as other vehicle information 4. What is necessary is just to discriminate | determine by whether it is more than an angle. In addition, the predetermined angle may be set to an angle at which the vehicle may escape in the neutral range, for example. When the vehicle is on a slope, that is, when the inclination angle of the vehicle is greater than or equal to a predetermined angle, the process proceeds to step S320. When the vehicle is not on a slope (positioned on a flat ground), that is, when the inclination angle of the vehicle is less than a predetermined angle, the process proceeds to step S330. Note that the inclination determination unit is not limited to the inclination angle sensor, and may determine whether or not the vehicle is located on an inclined place from the position information of the vehicle.

  In step S320, the parking release permission brake depression amount Qbp is set to a predetermined amount J. Note that the predetermined amount J may be set as appropriate corresponding to a predetermined angle that is a threshold value of the tilt angle determined in step S310. For example, the predetermined amount J may be set large when the predetermined angle is set large, and the predetermined amount J may be set small when the predetermined angle is set small. Then, this routine ends.

  In step S330, it is determined whether or not the accelerator is on. Whether the accelerator is on or not is determined, for example, by providing an accelerator switch (accelerator operation detection unit) for detecting accelerator on / off on the accelerator pedal of the vehicle and using the detected information of the accelerator switch as other operation information 4 for the vehicle control unit 10. It may be determined by inputting to. If the accelerator is on (accelerator operation), the process proceeds to step S340. When the accelerator is not on (when the accelerator is not operated), the process proceeds to step S350. The accelerator operation detection unit is not limited to an accelerator switch, and may be determined from an accelerator operation amount or the like.

In step S340, the parking release permission brake depression amount Qbp is set to a predetermined amount K. The predetermined amount K may be set to a relatively large value in order to prevent the vehicle from jumping out when the parking range is switched to the drive range or the reverse range. Then, this routine ends.
In step S350, it is determined whether or not other conditions are met. The other conditions are conditions that make it difficult to cancel the parking than usual. For example, the conditions include that the engine speed is a predetermined value or more. If other conditions are met, the process proceeds to step S360. If the other conditions are not met, this routine is terminated.

In step S360, the parking release permission brake depression amount Qbp is set to a predetermined amount L. The predetermined amount L may be set as appropriate in accordance with the other conditions in step S350. Then, this routine ends.
If there are no other conditions in step S350, steps S350 and S360 are omitted, and if it is determined in step S330 that the accelerator is not ON, this routine may be terminated. If there are a plurality of other conditions, the parking release permission brake depression amount Qbp may be set to a predetermined amount corresponding to each condition.

As described above, in the second reference form, the parking release permission brake stepping is performed under conditions other than the vehicle state such as READY-ON and IG-ON of the first reference form and the operation position of the shift lever of the first embodiment. Set the quantity Qbp. If the vehicle is on a slope, the vehicle may run away when parking is released. Therefore, the brake can be depressed more strongly by increasing the parking release permission brake depression amount Qbp than when not on a slope. Otherwise, the parking is not released, and the vehicle can be prevented from running away when the parking is released, thereby improving safety. In addition, when the accelerator is on, there is a high possibility that the vehicle will jump out when switching from the parking range. Therefore, the brake release permission brake depressing amount Qbp must be increased more than when the accelerator is off, so that the brake must not be depressed more strongly. Without switching from the parking range, it is possible to prevent the vehicle from popping out at the time of switching and to enhance safety. In addition, by setting the parking release permission brake depression amount Qbp according to other conditions, it is possible to improve the safety of the vehicle by preventing the parking from being released unless the brake is further depressed.

Although the description of the embodiment of the invention is finished as above, the embodiment of the present invention is not limited to the above embodiment.
For example, in the above embodiment, the parking lock device such as the parking lock actuator 11 is used to restrict switching from the parking range to another shift range, but instead of the parking lock actuator 11 and the parking lock control unit 12 of FIG. Further, the present invention may be applied to a vehicle that switches to another shift range using a shift actuator. In such a vehicle, the operation of the shift actuator is restricted to restrict the switching from the parking range to another shift range, and the parking release permission brake depression amount Qbp required at the time of the switching may be changed.

Also, the parking release permission brake depression amount Qbp that required when Setsu換Ru from the parking position to another shift range may be changed as appropriate according to each species conditions.
In the above embodiment, various information input to the vehicle control unit 10 may be obtained from various other means. For example, the brake depression amount Qb may be estimated from the brake pressure instead of the brake pedal operation amount.

  In addition to the plug-in hybrid vehicle as described above, the present invention can be applied to various vehicles such as electric vehicles, hybrid vehicles, and gasoline engine vehicles.

1 Shift lever 3 Brake pedal 4 Other vehicle information, operation information (inclination judgment unit, accelerator operation detection unit)
10 Vehicle control unit (shift switching restriction part)
11 Parking lock actuator (shift switching restricting part)
12 Parking lock control unit (shift switching restricting part)
22 Shift range determination unit (switching step amount change unit)
25 Notification device 30 Shift actuator (shift switching restricting part)

Claims (3)

Mounted on a vehicle, momentary possess at least a parking range and a drive range and a neutral range to a shift range, the shift range switching device for switching and operating the can, to be automatically returned to a predetermined position at the time of non-operation A shift control device for a transmission that is a shift lever of
A shift switching restricting portion for restricting switching from the parking range to another shift range when the brake depression amount of the vehicle is less than a predetermined value;
When the shift lever is operated to switch from the parking range to the neutral range, the predetermined value is set larger than when the shift lever is operated to switch from the parking range to the drive range. A switching step amount changing section to be
A shift control apparatus for a vehicle, comprising: The transmission further has a reverse range in the shift range,
When the shift lever is operated so as to switch from the parking range to the reverse range, the switching step amount changing unit is more than when the shift lever is operated so as to switch from the parking range to the drive range. also, the shift control apparatus for a vehicle according to claim 1, characterized in that the larger said predetermined value. An information device is provided that notifies when the brake depression amount is less than the predetermined value when the operation device of the transmission is operated to switch from the parking range to another shift range. Item 3. The vehicle shift control device according to Item 1 or 2 .

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