JPH03140669A - Automatic transmission for vehicle - Google Patents

Abstract

PURPOSE:To simplify the work of complicated mechanical tuning by storing the positional data of an operating member for a transmission in advance after regulating it so as not to cause any inconvenience in gear shift motion, and performing automatic shift control on the basis of these data. CONSTITUTION:In the case where a selecting operating member 2a, a shifting operating member 2b of a transmission 2 and respective operating rods 4a, 4b of a drive unit 4 are all in a specified operating state, if a control unit 12 is selected to a regulating mode after being connected by link members 8a, 8b, an actual gear position is detected by sensors 18, 19, and it is stored in a random access memory 15 in advance via a transmission control unit 7. When automatic shift control is performed, this positional data is utilized, performing automatic shift operation. Thus an offer of very accurate positional data is made possible for the automatic shift operation without performing any complicated mechanical tuning.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention operates a drive unit attached to a gear type transmission by a signal from a control unit, whereby a shift lever of the gear type transmission is operated. The present invention relates to an automatic transmission device for a vehicle configured to perform the following operations.

(Prior art) This type of conventional automatic transmission device using a gear type transmission is
A drive unit including a set of actuators for moving a shift lever of a gear type transmission in a select direction and a shift direction perpendicular thereto, and a control unit for instructing an operation amount by the drive unit, and controlling the gear type transmission. The drive unit is operated in response to a command signal output from the unit, thereby positioning the shift lever of the gear type transmission at a desired position. This drive unit is separate from the gear type transmission, and after being installed in a factory etc. so as to have the required relative positional relationship with the gear type transmission, each operation terminal for selection and shift is operated by the gear type transmission. It is assembled into a gear type transmission by being connected to a required operating member on the transmission side by an appropriate link member.

(Problem to be Solved by the Invention) Therefore, conventionally, after the drive unit is assembled as described above, a command signal for shifting is output from the control unit, and the shift lever of the gear type transmission is controlled by the drive unit. It is necessary to check whether the position moves reliably to the position based on the output from the position switch, and if there is a problem, it is necessary to mechanically adjust the mounting position of each member as appropriate. 1! ! There was a problem in that the I#I alignment process required a great deal of time and effort.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic transmission for a vehicle that can eliminate the need for mechanical adjustment after the drive unit is assembled.

(Means for Solving the Problems) A feature of the present invention for solving the above problems is that the present invention uses a link member including an actuator for operating the speed change operation member of a gear transmission! l A drive unit connected to the speed change operation member, and a control unit that controls the drive unit l-e to shift the gear of the gear transmission to a target gear position determined based on the driving state of the vehicle. An automatic transmission for a vehicle comprising: a first sensor means for outputting a position signal at a level corresponding to the position of the shift operation member; and a switching means for shifting the transmission to a predetermined position in response to the switching of the control unit to a mode for mounting adjustment, and controlling the actual gear position data at each shift position. and detection means for obtaining the information.

(Function) When the transmission and the drive unit are in a predetermined operating state, after the transmission and the drive unit are connected by the link member, the control unit is switched to the adjustment mode by operating the switching means. Then, the detection means obtains actual gear position data when the gear of the transmission is positioned at a predetermined shift position. This actual gear position data is used, for example, to correct position information indicating the target gear position when providing required target gear position information to a drive unit controlled by the control unit. As a result, even if there are dimensional variations in mechanical elements such as actuators and link members, the ninth gear positioning control can be performed with high precision using this correction data. (Example) Below, refer to the drawings. An embodiment of the present invention will be described in detail.

FIG. 1 is a schematic diagram of an embodiment of an automatic transmission device for a vehicle according to the present invention. This automatic transmission 1 has a configuration in which a gear transmission 2 and a clutch 3 are automatically controlled electronically according to the driving state of the vehicle, and a transmission actuator 4 and a clutch 3 for operating the gear transmission 2. It is equipped with a clutch actuator 5 for operation.

The transmission actuator 4 receives hydraulic pressure from the hydraulic power unit 6 and operates the selection operation member 2a and the shift operation member of the gear transmission 2 in response to a shift control signal St from the transmission control unit 7. 2b, and are used to perform positioning operations with the transmission actuator 4, and the selection operation stick 4a and the shift operation stick 4b of the transmission actuator 4.
are the selection operation member 2a and the shift operation member 2b.
and are connected via link members 8a and 8b, respectively. Therefore, when a shift control signal St is applied from the transmission control unit 7 to the transmission actuator 4 in order to shift the gear of the gear transmission 2 to a predetermined gear position, each of the selection and shift operation rings 4a and 4b is activated. By operating the selection operation member 21 and the shift operation member 2b via the corresponding link members 8a and 8b, the gear transmission 2 can be brought into a desired gear shift state. In the illustrated embodiment, the transmission control unit 7 is fixed to the transmission actuator 4.

From clutch control unit 9 to clutch actuator 5
A clutch control signal Sc is supplied to the clutch control signal Sc, thereby controlling the connection/disconnection of the latch 3. A clutch control unit 9 is also fixed to the clutch actuator 5.

The transmission control unit 7 and the clutch control device 9 are electrically connected to the main control unit 12 via communication lines it) and ii. The main control unit 12 includes a central processing unit (CPU) 3, a read-only memory (ROM) 1
4, random access memory (RAM) 15, input/output device (Ilo) 16, and a path 1 that interconnects these
The main control program stored in the ROM 14 is executed in the CPU 13, and the necessary information is exchanged between the transmission control unit 7 and the clutch control unit 9. Communication for control is executed as described below. Clutch control unit 9 and transmission control unit 7 also include microcomputers, and given control is executed according to a required control program.

A select position sensor 18 is coupled to the select operating member 2aK, and a select position signal Sa having a level corresponding to the position of the select operating member 2IL is output from the select position sensor 18 and input to the transmission control unit 7. There is. On the other hand, a shift position sensor 19 is coupled to the shift operation member 2b, and a shift position signal Sb of the next level is outputted from the shift position sensor 19 according to the position of the shift operation member 2b, and sent to the transmission control unit 7. It has been entered. This is a well-known configuration configured using a select position sensor 18, a shift position sensor 19Vi, and a potentiometer, and details of the configuration will be omitted.

In FIG. 1, reference numeral 20 denotes an accelerator sensor that outputs an accelerator signal indicating the amount of operation of the accelerator pedal 21;
23 is a brake switch that is turned on and off in response to the operation of the brake pedal 22 and outputs a brake signal BK indicating whether a brake operation is being performed; and 23 is an engine speed that indicates the rotational speed of the engine (not shown). A speed sensor that outputs a signal No. 24 is a select sensor that outputs a select signal SL that indicates the operating position of the selector 25. 25 is a vehicle speed sensor that outputs a vehicle speed signal V that indicates the traveling speed of one vehicle, SW
is a switch that is closed when the main control unit 12 is used as the adjustment source. Further, 26 is a warning lamp, and 27 is a display device that shows the result of adjustment, and includes lamps L and %L corresponding to each gear position of the gear transmission 2.

The gear transmission 2 shown in FIG. 1 is at the first speed (1st).

2nd speed (2nd), 3rd speed (3RA), 4th speed (4th speed)
The following positions are determined as shown in Fig. 2: Display device 27
The lamps L1 to L are also provided correspondingly.

The main control program shown in FIG. 3 is stored in the ROM 14 of the main control unit) 12, and data for automatic speed change operation of the gear transmission 2 and clutch 3 is stored in consideration of each input signal. The process is executed. The main control program 30 executed in the main control unit 12 will be explained below with reference to FIG.

After starting the execution of the main control program 30, first step 31
It is determined whether the switch SW is on or not. The switch SW is configured to perform a predetermined f-setting for adjusting the mounting error of the transmission actuator 4 and the connection between the transmission actuator 4 and the gear transmission 2 by the link member 8a8b by processing electrical data. This is a switch that is operated for the purpose of causing the main control unit 12 to execute a process, and is provided in a state that the user cannot easily operate it, for example.

When it is desired that the main control unit 12 performs control for automatic gear shifting, the switch SW is opened, and when it is desired that data processing for adjustment is performed, the switch S is closed. state. If the switch SW is in the open state, the determination result in step 31 is NO.
Then, in step 32, all the lamps L+" of the display device 27 are displayed.
=Lst goes out. This light-off control is performed by the main control unit 12.
The display control signal Is is executed in response to the display control signal Is from. After that, the process advances to Stella f33, and control for automatic gear shifting is executed. Here, for automatic gear shift control, output signals from each sensor indicating the driving state of the vehicle are taken into consideration, and control signals Ct and Ce for controlling the gear transmission 2 and clutch 3 are output from the main control unit 12. , communication line 10.
11 to the transmission control unit 7 and clutch control unit 9. As a result, each operation of the gear transmission 2 and the clutch 3 is performed, and the required speed change operation is automatically executed. When the automatic shift control in step 33 is completed, the process returns to step 31.

Installation of transmission actuator 4 and link member 8
Gear transmission 2 and transmission actuator 4 by m, 8b
When the switch SW is closed to connect the
The determination result in step 3 is YES, and control for adjustment is executed as follows.

First, in step 34, it is determined whether the brake switch BSW is closed. When the switch SW is closed and the adjustment mode is entered, the brake switch BSW functions as a command switch to maintain the transmission actuator 4 in a neutral state. When the brake switch BSW is closed, the selection operation stick 4m and the shift operation stick 4b of the transmission actuator 4
Both of them are brought into a control state for shifting the gear to a predetermined neutral position, that is, the neutral position (N) shown in FIG. 2, and are positioned and held at that neutral position.

Therefore, at this time, with the gear transmission 2 set at the neutral position (N,), the operator should hold the link member 8g.
, 8b, a connection between the gear transmission 2 and the transmission actuator 4 can be established.

The determination result of Stella 7'''34 is YES at this time, and the process proceeds to step 35, where the speed is changed from 1st speed (1st) to 5th speed (5th speed).
It is determined whether each shift position data and each select position data corresponding to the gear position of th) have been stored in memory. In this state, since the attachment of the link members 8m and 8b has only been completed, the determination result of the stellar 7'35 is NO, and the alarm run f26 is turned on in step 36.

The warning lamp 26 is a warning lamp indicating that the adjustment is not completed after the link members 8m and 8b are connected, and lights up in response to the warning signal As output from the main control unit 12. When the execution of step 36 is finished,
The program returns to step 31.

When the warning lamp 26 lights up, the operator turns off the brake switch BSW to execute the adjustment process, and executes step 37. In step 37, the shift position of the gear transmission 2 is sequentially changed to all nine positions shown in FIG.

A target gear position signal indicating each gear position is transmitted at appropriate time intervals. This target gear position signal is input to the transmission control unit 7 via the communication line IO, and as a result, the gear transmission 2 is shifted to the ear position indicated by the target gear position signal.

The transmission control unit 7 receives and receives this target gear position signal, and performs control to cause the transmission actuator to execute the shift operation and selection operation necessary for gear shifting to the target gear position. At this time, the transmission control unit 7 determines whether or not there is a target gear position where the gear shift is disabled. If a gear shift disabled state occurs, a disable signal is sent from the transmission control unit 7 to the main control unit. Sent to 12th.

In step 38, a determination is made as to whether a disable signal has been received. If a disabling signal is received, Stella f
The determination result of 3B is YES, and the alarm run f26 is turned on in step 39.

In this case, the connection work using the link members 8a and 8b will have to be redone.

Once the link members 8m, 8b are properly installed, reception of a disable signal is denied in step 38 and the process proceeds to step 40. Here, information on the select position and shift position when the gear transmission 2 is shifted to each gear position 1st to 5th is transmitted from the transmission control unit 7 as data DI to D to the main control. Given to unit 12. When these data D, -Ds are stored in the main control unit 12, the alarm lamp 26 is turned off in step 41, and the process returns to step 31.

In this way, when the memory of data n, %D, is completed and the brake switch BSW is closed again, Stella 7
s35 is executed. Data D1%D.

If the memory has been completed, the determination result in step 35 becomes YES, and the process advances to step 42. Here, the data D1 to Ds are sent from the main control unit 12 to the sequential transmission control unit 7, and the gears of the gear transmission 2 are adjusted according to these data D.
The gears are actually shifted to the positions indicated by 1 to Ds, and it is determined whether or not there is a position where it is impossible to shift into gear (step 43).

If the determination result in step 43 is No, Stella 7D4
Proceed to step 4, where all lamps L, %L- of display @27
is turned on, the alarm lamp 26 is turned off, and the process returns to step 31. If the determination result in step 43 is YES, the process proceeds to step 45, where only the lamp corresponding to the position where gear shifting is impossible is turned on among the lamps L1 to L9, and the gear position where the problem is occurring is worked on. inform the person. After this, the process returns to step 31.

Next, the program processing for adjustment executed by the microcomputer in the transmission control unit 7 will be described with reference to FIG.

In this program 50, first, in step 51, it is determined whether or not there is received data.

This received data is the data transmitted in step 37 of the flowchart of FIG. 3, and if this data has been received, the determination result in step 51 is YES, and the process proceeds to step 52. In step 52, the gear transmission 2 is shifted and selected in accordance with the received data, and in step 53 it is checked whether these operations have been completed. When the check is completed, data SFA indicating the actual shift position at each gear position obtained by the gear shifting operation at this time and data SLA indicating the actual select position are transmitted and input to the main control unit 12. (step 54).

If the Sten f530 determination result is No, step 5
5, it is determined whether or not the gear shift is not completed even after one second or more has elapsed. The determination result in step f55 is N.
In the case of O, execution of the program ends. Step 5
50 If the determination result is YES, proceed to step 56;
At this point, the positioning impossible code is transmitted, and the program execution ends.

If the determination result in step 51 is No, that is, the brake switch BSW is closed, and step 3 in FIG.
7 is not executed and there is no received data, step 57
In step 58, a shift and select operation for positioning the gear to a predetermined neutral position 81 (Nl) is performed, and in step 58 it is determined whether or not this has been completed.

If the determination result in step 58 is YES, in step 59, the shift and select positions are stored based on the select position signal Sa and shift position signal sb at the time of completion of the shift and select operation executed in step 57. , program execution ends. On the other hand, if the determination result in step 58 is NO, the process proceeds to step 60, where it is determined whether or not the shift and select operations are not completed even after 1 second or more has elapsed. If the operation is not completed, the process proceeds to step 56, where a positioning failure code is transmitted. Step 6
If the determination result of 0 is No, the execution of the program ends.

According to such a configuration, the link members 8m and 8b can be removed easily.
For installation, switch SW and brake switch BSW
When both are closed, the transmission control unit 7 controls the gear transmission 2.
The shift and select operation positions necessary for positioning the vehicle at the neutral position (N1) are set (step 57).

In this state, when the link members 8m and 8b are installed and the brake switch BSW is opened, the main control unit 1
2, target gear position data is transmitted to sequentially shift the gear transmission 2 to the first to fifth speed positions (step 37), and in response, shift and select operations are performed in the transmission actuator 4. executed (step 5
1.52). In this case, if a gear position that cannot be shifted occurs due to a defect in the attachment of the two link members 8a, 8b, a positioning impossible code is transmitted from the transmission control unit 7 to the main control unit 12 (step 56). )
.

When the positioning failure code P is received, the alarm run f26 lights up (step 38, 39), thereby prompting the operator to reinstall the link member 8a r 8b.

On the other hand, setting to each gear position is performed one after another by shift and select operations, and when the operations are completed, data S
FA, SLA is sent (steps 53-54),
In step 40, these data SFA, S
Data D1 to Ds are stored in memory based on LA, and then the alarm alarm f26 is turned off (step 41).

In this way, when the attachment of the link members 8a and 8b is completed and it is confirmed that the gear shift from gear position 1st to sth will be performed, the brake switch BSW
is closed again, and these data 01 to Ds are sent to the transmission control unit 7. Based on these data, a check is made to see if it is possible to shift into each gear position. It is shown in

In this way, the condition of the link members 8m and 8b is checked, and if it is confirmed that shifting to all gear positions is possible, the actual shift position and select position of each gear position are checked. The following data I)t-I)s is obtained. These data D obtained in the adjustment mode,
-Ds is used as gear position data during automatic shift control executed in step 33, and when a target gear position is given, the shift operation amount and select operation amount necessary to position the gear are Determined based on

Since the gear position is detected by the select position sensor 18 and shift position sensor 19, even if there are dimensional variations in mechanical elements such as the transmission actuator 4 and link members 8a and 8b, the select position and the gear position can be determined by data processing. This can be handled very easily by changing the shift position.

In the embodiment shown in FIG. 1, a transmission actuator 4 is provided with a transmission control unit 7 in addition to the main control unit 12, and the two control units cooperate to process data for adjustment. Although shown, it is possible to configure the main control unit 12 alone to perform the same function without providing the speed change control unit 7. in this case,
The select position signal Sa and the shift position signal sb are input to the main control unit 12.

FIG. 5 shows a flowchart showing a control program when only the main control unit 12 is used. This control program 70Vi is stored in the ROM 14. The control program 70 will be explained below with reference to FIG.

After starting the execution of the control program 70, first step 7.1
It is determined whether the switch SW is closed or not. If the switch SW is in the open state, the determination result in step 71 is No, all the lamps on the display device 27 are turned off in step 72, and then, in step 73, control for automatic gear shifting is executed. After this, the process returns to step 71.

Installation of transmission actuator 4 and link member 8
Transmission 2 and transmission actuator 4 for both sides by a and 8b
When the switch SW is closed at the ninth point of connection,
The determination result in step 71 is YES, and step 74
Proceed to.

In step 74, it is determined whether the brake switch BSW is closed. The action of the brake switch BSW in this case is exactly the same as in the previous embodiment, and the link members 8m and 8b are attached with the brake switch BSW closed. Step 7
The result of determination No. 4 is therefore YES, and the process proceeds to step 75, where it is determined whether each shift position data and each select position data corresponding to the gear positions of 1st speed (ist) to 5th speed (5th) have been memorized. determination is performed. Considering this state, since the attachment of link members 8a and 8b has only been completed, the determination result #'i in step 75 is
No, and the warning lamp 26't is turned on at step 76.
-Turn on the light. After this, the program returns to step 71.

When the warning lamp 26 lights up, the operator turns off the brake switch BSW to execute the adjustment process, and executes step 77. In step 77, a gear shift operation is performed to sequentially position the gears at all gear shift positions of the gear transmission 2 shown in FIG. In step 78, a positioning check is performed to determine whether or not the gear is set at a predetermined position by this gear shift operation. For example, this check may be configured to sequentially check whether or not the actual select position and shift position of the njh gear position are within the range of the select position and shift position predetermined for the nth gear position. can do.

If a problem occurs in the positioning check, the determination result is NO and the alarm rung 26 is lit in step 79. In this case, the link members 8m and 8b are considered to be improperly installed, so the operator should
Correct the installation of a and 8b.

When the link members 8m and 8b are properly attached, the determination result of the Stella f7B is YES, the data D1 to D are memorized in step 80, and the alarm lamp 26 is
is turned off (step 81).

When the memory of data D1 to D is completed in this way, when the brake switch BSW is closed again, Stella f
75 will be executed. In this case, step 75
If the determination result is YES, steps 82 and subsequent steps are executed. In step 82, the memorized data D1 to D
, the gear shift operations are performed sequentially according to the following.

In step 77, a check is made to see if the sequentially executed gear shift operations have been performed accurately, and it is determined whether a position at which it is impossible to shift has occurred. If the determination result in step 83 is NO, all the lamps L1 to L- of the display device 27 are turned on in step 84 to indicate that the adjustment has been completed. On the other hand, if the determination result of Stella 7'83 is YES, in step 85 the lamp LL
-I.

Only the lamp corresponding to the position where shifting is not possible will be lit.

According to this control program 70, the same effects as in the case of data processing for adjustment performed by executing the programs shown in FIGS. 3 and 4 can be obtained.

(Effects of the Invention) According to the present invention, as described above, by using the control unit for automatic shift control, the link member connecting the transmission and its actuator can be installed, and problems in the gear shift operation can be prevented. After making adjustments to prevent this from occurring, we obtain the position data of the operating members of the transmission after the adjustment, and use this position data when performing automatic shift control. Therefore, extremely accurate position data can be obtained for automatic shift operation. This has an extremely excellent effect in that it can be provided without complicated mechanical adjustment work.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a shift pattern of the gear transmission shown in FIG. 1, and FIGS. 3 and 4 are controls used in the device shown in FIG. 1. Flowcharts showing the respective programs. FIG. 5 is a flowchart showing a control program having the same functions as the control programs shown in FIGS. 3 and 4. 1... automatic transmission, 2... gear transmission, 3...
Clutch, 4...Transmission actuator, 7...Transmission control unit, 8a, 8b...Link member, 1
2... Main control unit, 18... Select position sensor, 19... Shift position sensor, SW... Switch, Sa... Select position signal, sb... Shift position signal.

Claims (1)

[Claims] 1. A drive unit that includes an actuator for operating the speed change operation member of the gear transmission and is connected to the speed change operation member by a link member, and a drive unit that moves the gear transmission to a target gear position determined based on the driving state of the vehicle. and a control unit that controls the drive unit to shift gears, the automatic transmission for a vehicle comprising: a first sensor means for outputting a position signal at a level corresponding to the position of the shift operation member; and the control unit. switching means for switching the control unit to a mode used for mounting adjustment of the drive unit, and switching the transmission to a predetermined mode in response to the switching means switching the control unit to the mode for mounting adjustment. 1. An automatic transmission device for a vehicle, characterized in that the automatic transmission device has a detecting means for shifting to a position and obtaining actual gear position data at each shift position, and the actual gear position data is used for automatic transmission control.