JP4830795B2 - Control device and shift control system for automatic transmission for vehicle - Google Patents

Description

  The present invention relates to an automatic transmission mode that automatically shifts according to a vehicle driving condition when a shift lever is arranged in a drive range, and a required shift stage when a temporary transmission operation switch is manually operated in this automatic transmission mode. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device and a shift control system for a vehicle automatic transmission that executes a temporary manual shift mode that establishes.

  In vehicles such as automobiles equipped with an automatic transmission, generally, for example, a parking range P, a reverse range R, a neutral range N, a drive range D, and the like can be selected.

  This range selection is performed when the driver manually operates a shift lever installed in the vicinity of the vehicle driver's seat.

  When the drive range D is selected, when the shift mechanism in the automatic transmission is, for example, a five-speed shift, an appropriate shift diagram, that is, a shift map that associates the accelerator opening (throttle valve opening) and the vehicle speed. Based on the first speed (1st), the second speed (2nd), the third speed (3rd), the fourth speed (4th), and the fifth speed (5th) In response to this, it is automatically upshifted or downshifted. This automatic shift control in the drive range is called an automatic shift mode.

  Conventionally, in a vehicle such as an automobile equipped with an automatic transmission, in order to enable driving that adapts to each person's sensitivity, such as high fuel efficiency driving and sports driving, the driving status of the vehicle while being an automatic transmission. Accordingly, there is a type in which the driver can manually select and change the shift stage of the automatic transmission so that the selected shift stage is held as long as there is no operation (see, for example, Patent Documents 1 to 4). This manual shift control is called a manual shift mode.

  This manual shift mode can be set to an executable standby state by shifting the shift lever, for example, from the state where the shift lever is disposed in the drive range D to a position called the manual shift range S, for example.

  If the shift lever disposed in the manual shift range S is manually operated forward or backward, an upshift or a downshift can be performed.

  In order to cancel the manual shift mode and return to the automatic shift mode, the shift lever may be returned from the manual shift range S to the drive range D. However, it can be said that the operation of the shift lever is troublesome.

  Therefore, in order to omit the returning operation, in the conventional example, the returning operation is automatically performed when a predetermined condition is satisfied.

  For example, in the manual shift mode, when the brake is operated continuously for a long time, the brake is frequently operated, the accelerator-on duration reaches a predetermined threshold, etc. If any one of them is detected, the automatic transmission mode is automatically restored.

In order to simplify the speed change operation in the manual speed change mode as described above, there is a type in which paddle shift switches for upshift and downshift are provided at appropriate positions of the steering wheel. This paddle shift switch is effective only when the shift lever is moved to the manual shift range S.
Japanese Patent Laid-Open No. 11-141663 JP 2005-172164 A JP-A-6-307534 Japanese Patent Laid-Open No. 11-257485

  In the above-described conventional example, the manual shift mode is automatically returned to the automatic shift mode. However, in order to automatically return the vehicle while the vehicle is running, the accelerator-on continuation time reaches a predetermined threshold value. It is set as a trigger. Since this threshold value is a fixed value in the conventional example, there is a concern that a case that is contrary to the driver's intention, that is, a case where it is not optimal, frequently occurs depending on the vehicle driving situation.

  By the way, there is a demand for downshifting to apply engine braking when, for example, the vehicle speed is to be decelerated during traveling, and downshifting is performed for smooth acceleration when the vehicle speed is to be accelerated rapidly during traveling. There is a demand to go up and shift back to the original gear when the target vehicle speed is reached.

  In order to respond to such a request, in the case of the conventional example, it is necessary for the driver to manually move the shift lever from the drive range D to the manual shift range S and then to operate further forward and backward. It can be said.

  Therefore, in the above situation, the shift lever is not moved from the drive range D to the manual shift range S, but by simply operating a temporary shift operation switch (for example, a paddle shift switch), the upshift or downshift is temporarily performed. It has been considered that a temporary manual shift mode that enables the vehicle to be executed can be executed.

  In this case, it is preferable to automatically return from the temporary manual shift mode to the automatic shift mode. In order to do so, for example, the conditions for returning from the manual shift mode to the automatic shift mode in the conventional example can be applied as conditions for automatic return from the temporary manual shift mode to the automatic shift mode. In other words, in the temporary manual shift mode, it is only necessary to automatically return from the temporary manual shift mode to the automatic shift mode when the accelerator-on elapsed time reaches a certain time regardless of the magnitude of the accelerator opening. .

  In such an automatic return mode, as in the conventional example, there is a concern that a case that is contrary to the driver's intention, that is, a non-optimal case, frequently occurs depending on the vehicle driving situation.

  The present invention relates to a control device for an automatic transmission for a vehicle that enables an automatic shift mode and a temporary manual shift mode, and a shift control system, in which the vehicle driver intends to return from the temporary manual shift mode to the automatic shift mode. The purpose is to make it possible to adapt and improve the smoothness and safety of vehicle travel and the usability of an automatic transmission.

The present invention relates to an automatic transmission mode that automatically shifts according to a vehicle driving condition when a shift lever is arranged in a drive range, and a required shift stage when a temporary transmission operation switch is manually operated in this automatic transmission mode. a control device for a vehicular automatic transmission to perform a temporary manual shift mode to establish, after establishing the shift stage which is required in the one o'clock manual shift mode, accelerator-on duration at the gear stage change but includes an automatic return means for the from the temporary manual shift mode Ru is returned to the automatic shift mode upon reaching a predetermined threshold, said automatic return means, in proportion to the threshold of the magnitude of the accelerator opening as well as, further to change each shift speed is established by the one o'clock manual shift mode, it is characterized in that.

  If this configuration allows automatic return from the temporary manual shift mode to the automatic shift mode, the driver does not need to perform a special operation for the return, which is convenient.

On the premise of such automatic return, in the present invention, the condition for automatic return from the temporary manual shift mode to the automatic shift mode is changed according to the magnitude of the accelerator opening. In comparison with the case where the automatic return condition is set to a fixed value, the return from the temporary manual shift mode to the automatic shift mode can be performed in accordance with the intention of the vehicle driver. This is advantageous in improving the feeling of driving the vehicle. Furthermore, since the threshold value is further changed for each shift stage established in the temporary manual shift mode, it is preferable to more appropriately perform automatic return from the temporary manual shift mode to the automatic shift mode. It will be advantageous.

The present invention also provides an automatic transmission mode that automatically shifts according to the vehicle operating condition when the shift lever is disposed in the drive range, and a request that is required when the temporary transmission operation switch is manually operated in this automatic transmission mode. a control device for a vehicular automatic transmission to perform a temporary manual shift mode that achieves the gears, from a shift position detecting hand stage or these detection output and temporary shift operation switch for detecting a position of the shift lever An execution means for executing the automatic shift mode or the temporary manual shift mode in response to the command, and after establishing the requested shift stage in the temporary manual shift mode, the accelerator-on duration at the shift stage is set to a predetermined value. and automatic returning means for said to return from the temporary manual shift mode to the automatic shift mode when it reaches a threshold, the magnitude of the threshold value of the accelerator opening Have been created threshold map for changing proportional to the per every gear position, and a storage means for the respective threshold map is stored, the automatic return means, during the temporary manual shift mode The threshold value is determined by collating the detection output from the accelerator opening detecting means for detecting the accelerator opening with the threshold map of the storage means corresponding to the shift stage established in the temporary manual shift mode. It is a feature.

  Thus, the configuration of the control device according to the present invention can be specified in detail.

  Preferably, a manual shift mode that allows manual shift operation when the shift lever is disposed in the sequential shift range is further executed.

  In this configuration, since the types of speed change modes are increased, it is advantageous to improve usability, such as being able to handle driving according to each driver's preference.

  Furthermore, the present invention provides a shift lever that is installed in the vicinity of the vehicle driver's seat and selects a drive position or a sequential shift position, and is temporarily installed in the vicinity of the vehicle driver's seat and temporarily downshifts or upshifts when the automatic transmission mode is executed. A temporary shift operation switch for shifting and an automatic shift mode for automatically shifting according to a vehicle driving condition when the shift lever is disposed in the drive range, and the temporary shift operation switch in the automatic shift mode are And a control device that executes a temporary manual shift mode that establishes the requested shift speed when manually operated, and the control device has any one of the configurations described above.

  Thus, the present invention is not limited to the above-described vehicle automatic transmission control device, and the entire system related to the shift control of the vehicle automatic transmission can be the subject of the invention.

  Preferably, the temporary shift operation switch is a paddle shift switch installed on a steering wheel of a vehicle.

  According to this configuration, since the temporary speed change operation switch is installed at a place where the vehicle driver can easily operate, an operation for executing the temporary manual speed change mode can be easily performed.

  The present invention relates to a control device for an automatic transmission for a vehicle that enables an automatic shift mode and a temporary manual shift mode, and a shift control system, in which the vehicle driver intends to return from the temporary manual shift mode to the automatic shift mode. It will be possible to adapt. Therefore, it is possible to contribute to improving the smoothness and safety of vehicle travel and improving the usability of the automatic transmission.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7 show an embodiment of the present invention.

  Prior to the description of the characteristic configuration of the present invention, an outline of a vehicle on which an automatic transmission for a vehicle to which the present invention is applied will be described with reference to FIG.

  In FIG. 3, reference numeral 1 denotes a front engine / rear drive (FR) type vehicle. In the vehicle 1, rotational power generated by the engine 2 is appropriately shifted by the automatic transmission 3 and transmitted to the left and right rear wheels 6 via the propeller shaft 4 and the differential 5.

  The operation of the engine 2 is controlled by the engine control device 7, and the operation of the automatic transmission 3 is controlled by the transmission control device 8. The engine control device 7 and the transmission control device 8 are connected to each other so that information can be transmitted and received as necessary.

  The transmission control device 8 corresponds to the control device for an automatic transmission for a vehicle according to the present invention, and functions as an execution means, an automatic return means, or the like according to claim 2. However, the control device according to the present invention may be an independent control device different from the transmission control device 8.

  As shown in FIG. 1, the automatic transmission 3 mainly includes an input shaft 11, a torque converter 12, an oil pump 13, a transmission mechanism 14, a hydraulic control device 15, an output shaft 16, and the like.

  As an operation of the automatic transmission 3, in short, when rotation of a crankshaft (not shown) of the engine 2 is input to the input shaft 11 via the torque converter 12, the rotation input to the input shaft 11 is The speed change mechanism 14 changes the speed to an appropriate speed ratio and outputs it from the output shaft 16.

  Although not shown in detail, the speed change mechanism unit 14 is configured to use a generally known planetary gear mechanism that can change speeds of, for example, five forward speeds and one reverse speed.

  The hydraulic control device 15 establishes an appropriate shift stage of the transmission mechanism unit 14 and is not shown in detail, but a plurality of linear solenoids that engage and release various brakes and clutches provided in the transmission mechanism unit 14. At least a valve and a manual valve for supplying hydraulic oil to each of these linear solenoid valves as necessary are provided.

  Next, the basic configuration of the shift control system of the vehicle automatic transmission 3 to which the present invention is applied will be described with reference to FIG.

  In FIG. 1, 21 is a shift lever, 22 is a steering wheel, 23A is an upshift paddle shift switch, 23B is a downshift paddle shift switch, and 24 is an accelerator pedal.

  The automatic transmission 3, the shift lever 21, the paddle shift switches 23A and 23B, and the transmission control device 8 constitute a shift control system according to the present invention.

  The shift lever 21 is appropriately moved in a shift gate 25 as shown in FIG. 4 to range the automatic transmission 3 (parking range P, reverse range R, neutral range N, drive range D, sequential shift range S). Is manually selected, for example, disposed near the driver's seat of the vehicle 1.

  The steering wheel 22 is installed in front of the driver's seat of the vehicle 1. The paddle shift switches 23A and 23B are temporary shift operation switches described in the claims. For example, the paddle shift switches 23A and 23B have a lever shape as shown in FIG. 1, and are pushed by pulling them forward to a predetermined position of the steering wheel 22. It is installed to be.

  One paddle shift switch 23A outputs a command signal requesting an upshift of the gear position (transmission gear ratio), and the other paddle shift switch 23B reduces the gear position (transmission gear ratio). Assigned to output a command signal requesting a shift. For this purpose, for example, as shown in FIG. 1, a symbol “+” is attached to the surface of one paddle shift switch 23A, and a symbol “−” is attached to the surface of the other paddle shift switch 23B.

  Both the engine control device 7 and the transmission control device 8 are generally known ECUs (Electronic Control Units), and both have the same hardware configuration. In this embodiment, only the transmission control device 8 related to the present invention will be described with reference to FIG.

  The transmission control device 8 establishes an appropriate shift stage, that is, a power transmission path in the transmission mechanism unit 14 by controlling the hydraulic control device 15 of the automatic transmission 3, and as shown in FIG. CPU) 81, read only memory (ROM) 82, random access memory (RAM) 83, backup RAM 84, input interface 85, and output interface 86 are connected to each other by a bidirectional bus 87. ing.

  The CPU 81 executes arithmetic processing based on an appropriate control program or control map stored in the ROM 82. The ROM 82 stores at least a control program related to basic shift control (for example, an automatic shift mode, a manual shift mode, and a temporary manual shift mode described below). The RAM 83 is a memory that temporarily stores calculation results in the CPU 81, data input from each sensor, and the like. The backup RAM 84 is a non-volatile memory that stores various data to be saved.

  The input interface 85 includes at least an accelerator opening sensor 91, an engine speed sensor 92, an input shaft speed sensor 93, an output shaft speed sensor 94, a range position sensor 95, a vehicle speed sensor 96, a brake switch 97, a paddle shift switch. 23A, 23B, etc. are connected. In addition, at least the hydraulic control device 15 of the automatic transmission 3 is connected to the output interface 86.

  The accelerator opening sensor 91 detects the amount of depression of an accelerator (not shown). The engine speed sensor 92 detects the engine speed NE transmitted to the torque converter 12 of the automatic transmission 3. The input shaft rotational speed sensor 93 detects the rotational speed NT of the input shaft 11. The output shaft rotation speed sensor 94 detects the rotation speed NO of the output shaft 16.

  The range position sensor 95 is located where the shift lever 21 is in the parking range (P), reverse range (R), neutral range (N), drive range (D), sequential shift range (S), etc. in the shift gate 25. It is to detect whether there is.

  The vehicle speed sensor 96 detects the traveling speed of the vehicle 1, and the brake switch 97 outputs a brake-on signal when a brake pedal (not shown) installed in the vehicle 1 is depressed. .

  Here, the automatic shift mode, the manual shift mode, and the temporary manual shift mode described above will be described.

  (1) In short, the automatic transmission mode is configured such that when the shift lever 21 is disposed in the drive range D, the automatic transmission mode is automatically changed according to the vehicle driving situation.

  That is, when the shift lever 21 is disposed in the drive range D, the transmission mechanism 14 in the automatic transmission 3 is controlled based on a suitable shift diagram, that is, a shift map that associates the accelerator opening (throttle valve opening) with the vehicle speed. Of the first speed stage (1st), the second speed stage (2nd), the third speed stage (3rd), the fourth speed stage (4th), and the fifth speed stage (5th), depending on the driving state of the vehicle It is automatically upshifted or downshifted.

  (2) In manual shift mode, in short, when the shift lever 21 is arranged in the sequential shift range S, the shift can be made by manually operating the shift lever 21 and the paddle shift switches 23A and 23B. Yes.

  That is, when the shift lever 21 is moved to the sequential shift range S from the state in which the shift lever 21 is disposed in the drive range D, the shift lever 21 is brought into a standby state where it can be manually operated forward (+) or backward (−). be able to.

  If the shift lever 21 is manually operated forward or backward in the sequential shift range S, an upshift or a downshift can be performed. The shift stage selected in the manual shift mode is held unless there is an operation by the driver.

  In addition, if the shift lever 21 is arranged in the sequential shift range S, an upshift or a downshift can be performed by pushing the paddle shift switches 23A and 23B in the same manner as the front / rear operation of the shift lever 21. ing.

  (3) In the temporary manual shift mode, in short, when the paddle shift switches 23A and 23B are manually operated in the automatic shift mode, the upshift or the downshift can be performed from the currently selected shift stage in the automatic shift mode. It has become the form.

  That is, the upshift or downshift can be performed by pushing the paddle shift switches 23A and 23B while the shift lever 21 is disposed in the drive range D.

  Next, portions to which the features of the present invention are applied will be described in detail with reference to FIGS.

  In this embodiment, while the temporary manual shift mode is being executed, the automatic shift mode is automatically returned and the conditions for the return are devised.

  A control program relating to this mode return is stored in the ROM 82 of the transmission control device 8.

  Specifically, the mode return control will be described in detail with reference to the flowchart of FIG.

  In short, if one of the paddle shift switches 23A and 23B is manually operated while the shift lever 21 is placed in the drive range D while the automatic shift mode is being executed, the temporary manual shift is not described in detail. The main routine relating to mode control is entered, and the shift stage (transmission gear ratio) is upshifted or downshifted based on command signals from the paddle shift switches 23A and 23B.

  In the first place, in the automatic transmission mode, a predetermined control map (based on the opening of the accelerator pedal 24 (or throttle opening) detected by the accelerator opening sensor 91 and the vehicle speed detected by the vehicle speed sensor 96 ( Referring to (not shown), a required gear stage (speed ratio) is determined.

  Based on the command signal from the paddle shift switches 23A and 23B, the upshift or the downshift in the temporary manual shift mode is performed on the basis of the current shift stage selected in the automatic shift mode.

  A part of the main routine of the temporary manual transmission mode includes a subroutine shown in the flowchart of FIG.

  Here, after the target gear position is established in the temporary manual shift mode described above, entry is made to step S11 of the flowchart shown in FIG.

  In step S11, it is determined whether or not the vehicle 1 has stopped. This determination can be made based on the detection output of the vehicle speed sensor 96.

  Here, when the vehicle 1 stops, an affirmative determination is made in step S11, and in the subsequent step S12, the temporary manual shift mode is returned to the automatic shift mode, and then this flowchart is exited. However, when the vehicle 1 continues to travel, a negative determination is made in step S11, and the process proceeds to step S13.

  In step S13, it is determined whether an automatic return condition from the temporary manual shift mode to the automatic shift mode is satisfied. The contents of the return condition are determined by checking whether or not the duration time of accelerator-on (a state where the accelerator pedal 24 is depressed) has reached a predetermined threshold during execution of the temporary manual shift mode.

  For this threshold, the accelerator opening detected by the accelerator opening sensor 91 is collated with a threshold map (for example, see FIG. 6) stored in advance in the backup RAM 84 (corresponding to the storage means described in the claims). The decision is made.

  This threshold value map is created by empirically relating the accelerator opening at the shift speed established in the temporary manual shift mode and the threshold value for the return determination. In this embodiment, FIG. As shown in (c), for example, the first speed stage 1st, the second speed stage 2nd, the third speed stage 3rd, etc. are created for every shift stage.

  If the return condition is satisfied, an affirmative determination is made in step S13, the process proceeds to step S12, and after returning from the temporary manual shift mode to the automatic shift mode, the process exits this flowchart. However, if the return condition is not satisfied, a negative determination is made in step S13, step S12 is skipped, and this flowchart is exited.

  In short, the timing of automatic return to the automatic transmission mode is changed in proportion to the accelerator opening in the temporary manual transmission mode.

  Specifically, this will be described with reference to the time chart of FIG. First, for example, if the accelerator opening after executing the temporary manual shift mode is constant at level A indicated by the solid line in FIG. 7A, the threshold value is set to level X1 indicated by the broken line in FIG. The return timing to the automatic transmission mode is as shown in FIG.

  Further, for example, when the accelerator opening after the temporary manual shift mode is executed is larger than the level A as shown by the level B shown by the one-dot chain line in FIG. 7A, the threshold value is one-dot chain line in FIG. As shown in FIG. 7 (d), the return timing to the automatic transmission mode is delayed as compared with the case of FIG. 7 (c).

  Further, for example, if the accelerator opening after executing the temporary manual shift mode is made smaller than the level A as shown by the level C indicated by the two-dot chain line in FIG. 7A, the threshold value becomes two in FIG. As shown in FIG. 7 (e), the return timing to the automatic transmission mode becomes faster as compared with FIG. 7 (c).

  Here, for reference, an example of a situation suitable for using the temporary manual shift mode described above will be given.

  (1) When the downshift is performed in the temporary manual shift mode in a situation where the engine brake is applied by downshifting in order to decelerate and stop the vehicle 1, when the vehicle 1 stops, the accelerator opening However, since affirmative determination is made in step S11 in FIG. 5, the temporary manual shift mode is automatically returned to the automatic shift mode immediately after the vehicle stops.

  (2) In order to accelerate the vehicle 1 relatively quickly and reach the target vehicle speed, in a situation where the engine speed is smoothly increased by downshifting, the downshift is performed in the temporary manual shift mode; Until the target vehicle speed is reached, the accelerator opening is made relatively large, so it takes a relatively long time to return from the temporary manual shift mode to the automatic shift mode, and until the target vehicle speed is reached. This eliminates the problem of returning to the automatic transmission mode.

  (3) After downshifting in front of a road curve, etc. and applying engine braking, the vehicle decelerates under a load while accelerating to the target vehicle speed with the current gear position after passing the curve. When the downshift and the upshift are performed in the temporary manual shift mode in a situation where the engine speed is decreased by upshifting at the first, the accelerator opening is first reduced to zero or smaller until the vehicle exits the curve. Since the initial threshold setting is set empirically, it is not necessary to return from the temporary manual shift mode to the automatic shift mode in the middle of the curve, and the accelerator is not used until the vehicle reaches the target vehicle speed after passing the curve. As the opening is gradually increased, the time until returning from the temporary manual shift mode to the automatic shift mode is adjusted gradually. So it is not necessary to not return.

  As described above, according to the present embodiment to which the features of the present invention are applied, when upshifting or downshifting is performed in the temporary manual shift mode, if the subsequent accelerator opening is small, it is temporarily stopped in a relatively short time. While it is possible to automatically return from the manual shift mode to the automatic shift mode, it is possible to prevent the temporary shift from the temporary manual shift mode to the automatic shift mode at an early stage if the accelerator opening is large.

  Incidentally, even in the situation described in the above (1) to (3) etc., downshift and upshift can be performed in the manual shift mode. In this case, naturally, the shift lever 21 is sequentially moved from the drive range D. After moving to the shift range S, it is necessary to operate back and forth, and in order to return to the drive range D, the shift lever 21 must be moved from the sequential shift range S to the drive range D.

  If it is considered that such an operation is troublesome, if the temporary manual shift mode is used as described above, the shift control adapted to the driver's intention can be made while eliminating the troublesome operation. Therefore, it can be said that driving adapted to the driver's intention is possible.

  In addition, this invention is not limited only to the said embodiment, All the deformation | transformation and application included in the range equivalent to the claim and the said range are possible. Hereinafter, other embodiments of the present invention will be described as examples.

  (1) In the above embodiment, the example in which the automatic transmission 3 is in the FR format is given, but it is also possible to adopt the front engine front drive (FF) format or the like. Further, although the vehicle 1 equipped with the automatic transmission 3 is exemplified as a type using only the engine as a drive source, it may be a hybrid type using both the engine and the motor generator.

  (2) In the above embodiment, the lever-shaped paddle shift switches 23A and 23B are given as examples of the temporary shift operation switch. Instead, the steering wheel 22 is regarded as a watch on the driver side of the steering wheel 22. Sometimes, for example, a button shape provided at a position corresponding to around 3 o'clock and a position corresponding to around 9 o'clock is also possible.

  (3) In the above embodiment, the transmission mechanism 14 of the automatic transmission 3 is an example of a stepped planetary gear mechanism. However, a stepped gear mechanism, a belt type or a toroidal type is used. A continuously variable transmission mechanism can be used.

  For example, in the case of a belt-type continuously variable transmission mechanism, although not shown, the belt is wound around a pair of pulleys. A shift is realized.

  In such a belt-type continuously variable transmission mechanism, for example, a downshift such as a kickdown in a stepped transmission type cannot be performed. It is possible to perform a downshift in the manual transmission mode. In this case, the conditions for automatically returning from the temporary manual shift mode to the automatic shift mode can include the following requirements in addition to the contents described in the above embodiment.

  For example, when the downshift in the temporary manual shift mode is performed during traveling in the automatic shift mode, the rotation rate increase rate of the input shaft 11 and the shift speed of the input shaft 11 in the automatic shift mode before the downshift are maintained. As a matter of course, the rate of increase in the rotational speed is different. Therefore, when the downshift is performed in the temporary manual transmission mode, the rotational speed of the input shaft 11 that rises as the accelerator pedal is stepped on is temporarily maintained in the automatic transmission mode. In this case, the temporary manual shift mode can be automatically returned to the automatic shift mode when the number of rotations of the input shaft 11 as the accelerator pedal 24 is increased.

1 is a schematic configuration diagram illustrating an embodiment of a shift control system for an automatic transmission for a vehicle to which the present invention is applied. FIG. 2 is a configuration block diagram showing an embodiment of the transmission control device shown in FIG. 1. It is a figure which shows typically the power train of the vehicle by which the automatic transmission used as the application object of this invention is mounted. It is a top view which shows the shift gate as a movement guide of the shift lever of FIG. It is a flowchart used for operation | movement description by the transmission control apparatus of FIG. FIG. 6 is a diagram showing a threshold map for changing the threshold value for the return determination in step S13 in FIG. 5 in proportion to the accelerator opening degree, where (a) is a threshold map relating to the first speed stage (1st), and (b) is a chart. The threshold map regarding the second speed (2nd), and (c) shows the threshold map regarding the third speed (3rd). It is a time chart used for operation | movement description of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Engine 3 Automatic transmission 8 Transmission control apparatus 14 Transmission mechanism part of automatic transmission 15 Hydraulic control apparatus of automatic transmission 21 Shift lever 22 Steering wheel 23A Paddle shift switch for upshift (temporary transmission operation switch)
23B Paddle shift switch for downshift (temporary shift operation switch)
24 accelerator pedal 91 accelerator opening sensor 96 vehicle speed sensor 97 brake switch

Claims (5)

An automatic shift mode that automatically shifts according to the vehicle driving condition when the shift lever is disposed in the drive range, and a temporary shift that establishes the requested shift stage when the temporary shift operation switch is manually operated in this automatic shift mode. A control device for an automatic transmission for a vehicle that executes a manual shift mode,
After achieves the gears requested in the one o'clock manual shift mode, the allowed from the temporary manual shift mode is returned to the automatic shift mode when the duration of the accelerator-on at the gear stage has reached a predetermined threshold value Including automatic return means
Said automatic return means may be changed in proportion to the threshold of the magnitude of the accelerator opening, wherein one o'clock manual shift mode further to change the speed for each stage which is established in the automatic transmission for a vehicle, characterized in that Machine control device. An automatic shift mode that automatically shifts according to the vehicle driving condition when the shift lever is disposed in the drive range, and a temporary shift that establishes the requested shift stage when the temporary shift operation switch is manually operated in this automatic shift mode. A control device for an automatic transmission for a vehicle that executes a manual shift mode,
Executing means for executing the automatic speed change mode or temporary manual shift mode in response to a command from the shift position detecting hand stage or these detection output and temporary shift operation switch for detecting a position of the shift lever,
After the required shift speed is established in the temporary manual shift mode, automatic return for returning from the temporary manual shift mode to the automatic shift mode when the accelerator-on continuation time at the shift speed reaches a predetermined threshold value Means,
Have been created threshold map for changing in proportion to the threshold of the magnitude of the accelerator opening degree to each of all gear, and a storage means for the respective threshold map is stored,
The automatic return means is configured to output a detection output from an accelerator opening detection means for detecting an accelerator opening during execution of the temporary manual shift mode to a shift stage established in the temporary manual shift mode . A control apparatus for an automatic transmission for a vehicle, wherein the threshold value is determined by collating with a threshold map. The control device for an automatic transmission for a vehicle according to claim 1 or 2,
A control device for an automatic transmission for a vehicle, further executing a manual shift mode that enables a manual shift operation when the shift lever is disposed in a sequential shift range . A shift lever installed near the driver's seat and for selecting a drive position or a sequential shift position;
A temporary shift operation switch that is installed near the vehicle driver's seat and temporarily downshifts or upshifts when the automatic shift mode is executed;
When the shift lever is disposed in the drive range, an automatic shift mode is executed in which the gear is automatically shifted according to the vehicle driving situation, and the required shift speed is set when the temporary shift operation switch is manually operated in this automatic shift mode. And a control device that executes a temporary manual shift mode that establishes
A shift control system for an automatic transmission for a vehicle, wherein the control device has the configuration according to any one of claims 1 to 3 . The control device for an automatic transmission for a vehicle according to claim 4,
The shift control system for an automatic transmission for a vehicle, wherein the temporary shift operation switch is a paddle shift switch installed on a steering wheel of the vehicle.

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