JP6240557B2 - Transmission learning method and learning apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for learning different characteristic values for individual transmissions.

  In the manufacture of a vehicle, it is usual to produce a plurality of units constituting the vehicle separately in a unit factory, and complete the vehicle by assembling and integrating the completed units at a vehicle assembly factory. For example, an automatic transmission is composed of an automatic transmission main body and an electronic control device that controls the automatic transmission main body, and the automatic transmission main body and the electronic control device, which are constituent elements, are manufactured separately and assembled by being integrated with the vehicle body. Is done.

  Since there are variations in the shape of mechanical parts and in the characteristics of electrical components such as sensors in the automatic transmission body, the characteristic values of the units to be controlled (gear end, synchro position, clutch engagement) in the inspection process A reference position such as a position is acquired, and this characteristic value is input to a control device to ensure a predetermined speed change performance.

  Particularly in the case of automatic manual transmission (AMT), when each unit automatically performs a shifting operation in conjunction with each other, the clutch actuator of the transmission is assembled with each unit assembled to the vehicle body. It is necessary to fill the oil, check that the clutch stroke is within the standard by the hydraulic pressure-stroke inspection of the clutch actuator, and further learn the characteristic value of the transmission.

  In order to perform the above, a plurality of processes are required, the assembly line of the vehicle assembly factory becomes redundant, and when performing various inspections and learning, the transmission assembled on the vehicle body and the line side of the assembly line are arranged. It is necessary to attach and detach the wiring of the control device. The attachment / detachment is troublesome because it requires the work of an operator in a narrow space in the engine room, and there is a problem that an abnormality due to a poor connection occurs and various inspections and learning need to be performed again. .

  In order to solve this problem, in Patent Document 1, an automatic transmission body assembled in a unit factory and a control facility disposed in the unit factory are electrically connected, and a control signal is transmitted to an actuator of the automatic transmission body. The characteristic data output by the automatic transmission main body operating in response to the control signal is received by the control facility, and the individual identification information of the individual automatic transmission main body is obtained as the individual characteristic information of the individual automatic transmission main body. Create a database as learning value data in association with each other.

The learning data is transferred to the vehicle assembly factory and stored in a database management facility provided in the vehicle assembly factory. In the vehicle assembly plant, the automatic transmission main body and engine assembled in the vehicle body are electrically connected to the electronic control unit. After the assembly of the vehicle body is completed, learning specific to the automatic transmission main body mounted on the corresponding vehicle body from the database management facility The value data is read based on the individual identification information and written to the storage circuit of the electronic control device of the corresponding vehicle body.
Thus, a method is disclosed in which the electronic control device performs a shift operation by correcting a deviation between the learned value data and the reference value data.

  In Patent Document 2, instead of the database constructed in the control facility described in Patent Document 1, a characteristic storage device is integrally provided in each automatic transmission main body, and a solenoid, a sensor, etc. are provided as storage means of this characteristic storage device. The data such as the characteristics of the hydraulic pressure and the rising characteristics of the hydraulic pressure are stored. Then, when assembling the vehicle, the electronic control system automatically reads the data into an electronic control unit coupled to the automatic transmission main body, corrects the characteristics of the automatic transmission main body based on this data, and reduces the variation in transmission performance. A transmission is disclosed.

Further, Patent Document 3 discloses the following automatic transmission manufacturing method and an automatic transmission using the manufacturing method.
That is, when the inspection of the finished product of the automatic transmission main body is finished, the characteristic test is performed alone, the test data is obtained, the constants at the time of the shift control are determined based on the obtained values, and the constants are set. As a characteristic identification mark, a label to be displayed using a plurality of colors, barcodes, symbols, and the like is created, and this label is pasted to an appropriate position of the corresponding automatic transmission body. Furthermore, a characteristic identification mark is similarly attached to the control valve. Then, the serviceman looks at the labels attached to the automatic transmission main body and the control valve, and writes the hydraulic control constants and the shift control constants corresponding to each characteristic identification mark in the memory circuit of the electronic control unit. Include. A label with a constant identification mark corresponding to the written constant is attached to the electronic control unit. Finally, the control valve is assembled to the automatic transmission body, and the electronic control unit and the automatic transmission body are electrically connected to complete the automatic transmission.

JP 2005-337387 A JP 05-215206 A JP 2003-254418 A

  In the method disclosed in Patent Document 1, since a database is constructed in the control facility arranged in the unit factory, a backup mechanism or the like for maintaining the database is required, resulting in high costs. In addition, it is necessary to perform joint management of data transmitted last time and data transmitted this time. Furthermore, since the method disclosed in Patent Document 1 simply transfers the various inspection and learning processes performed at the vehicle assembly factory to the unit factory, the number of processes is the same as before, and the overall line length is It does not change. In addition, man-hours cannot be reduced.

  In the electronically controlled automatic transmission described in Patent Document 2, it is necessary to dispose a characteristic storage device in the automatic transmission main body, which increases costs. In Patent Document 2, various inspections and learning are performed on the automatic transmission main body. Since the process is not described, the number of processes is the same as before and the line length as a whole is not changed as in Patent Document 1. In addition, man-hours cannot be reduced.

In the manufacturing method for completing the automatic transmission described in Patent Document 3 and the automatic transmission using the manufacturing method, it is necessary to stick a label with a solid performance identification mark of the automatic transmission body, which is complicated. is there.
In addition, there is a problem that the data cannot be read during transportation from the unit factory to the vehicle assembly factory or when the label is peeled off or damaged during the assembly to the vehicle body. In addition, the operator needs to read the data for writing to the electronic control device, and the productivity is not necessarily high.

In order to eliminate the above problems, the transmission learning method according to the present invention is:
At the transmission assembly plant, a unit other than the transmission control device is assembled into a unit, and learning of the clutch stroke and the gear end position is performed simultaneously using the two control devices in the state of the unit.
The data is written in a memory attached to a control unit disposed in the clutch actuator of the unit,
The unit in which the data is written in the memory is conveyed toward a vehicle assembly factory,
A unit is assembled to the engine at the vehicle assembly factory to form an engine assembly, the engine assembly is further assembled to the vehicle body, and the unit is connected to a control device pre-assembled to the vehicle body to complete the completed vehicle. Read the data written in the memory into a control device pre-assembled in the vehicle body,
Next, in the state of the completed vehicle, synchronization position learning, clutch touch point learning, and clutch wear coefficient learning are performed, and the learning data is written in the control device assembled in advance in the vehicle body to obtain a completed vehicle.

Further, a transmission learning device used in the above transmission learning method according to the present invention includes:
Assemble parts other than the control unit out of the transmission on the pallet transported by the transport conveyor in each step arranged along the transport conveyor laid in the transmission assembly factory to complete the unit,
Next, the unit is transported to the learning process by a transport conveyor,
The learning device arranged in the learning step is configured to simultaneously learn the clutch stroke and the gear end position for the unit,
The learning device includes a computer, a first control device connected to the computer, a second control device, a dummy clutch actuator connected to the first control device, and a dummy connected to the second control device. The gear switching actuator
The first control device is further connected to a gear switching actuator of the unit;
The second control device is further connected to a clutch actuator of the unit;
The clutch stroke and the gear end position are learned simultaneously.

According to the present invention, gear end learning including filling of oil into a hydro clutch actuator (hereinafter referred to as HCA) (learning of clutch stroke data), continuity confirmation of various sensors such as a parking position sensor, and neutral position learning in one step. Can be performed at the same time, so the working time is greatly reduced.

Schematic diagram showing all learning modes of transmission using learning method and learning device for transmission Schematic diagram showing a conventional transmission learning method and learning device Schematic diagram showing the state where the transmission is mounted on the vehicle body Schematic diagram showing a transmission learning method and learning device of the present invention

First, the assembly process of the automatic transmission to the vehicle body currently performed by the present applicant will be described with reference to FIGS.
In the unit factory 1, the transmission unit U, which is a semi-finished product of the transmission, is learned, the learned transmission unit U is loaded on the transport carriage 53, and sent to the assembly factory 51 by a truck or the like to be transmitted to the vehicle body W. Assemble unit U.

  The unit factory 1 is provided with a transport conveyor 2, and the pallet 3 on which the transmission unit U is placed can be moved by the transport conveyor 2. In the learning step 4 provided in a part of the movement line, the transmission unit The characteristic value of U is learned.

  As shown in FIG. 2, the transmission unit U includes a clutch 21, an HCA 22, a gear mechanism 23, and a gear switching actuator 26 including a shift actuator 24 and a select actuator 25. A transmission control unit {hereinafter referred to as "TCU" ". (TCU: Transmission Control Unit)} 20 does not constitute unit U.

  A clutch actuator control unit 22a of the HCA 22 is connected to the clutch 21 via a hydraulic pipe 21a. The HCA 22 controls the clutch operation of the clutch 21 in accordance with a command (clutch operation signal S1) from the TCU 20. The HCA 22 transmits to the TCU 20 a clutch position signal S2 indicating the position of a pressure plate (not shown) with respect to the flywheel (not shown) of the engine E.

  The gear mechanism 23 has a plurality of gears (not shown) and can be switched. A shift arm 28 of a gear switching actuator 26 is connected to the plurality of shift forks 27 of the gear mechanism 23 in accordance with the selected gear stage. The shift arm 28 performs a shift operation (moving in the horizontal direction in FIG. 2) by the shift actuator 24, and performs a select operation (rotation about the axis of the shift arm) by the select actuator 25.

  The TCU 20 is arranged in the learning step 4, and a TCU 52 is attached in advance to the vehicle body W of the assembly factory 51. The TCU 20 and TCU 52 control the HCA 22, the shift actuator 24, and the select actuator 25 that constitute the transmission unit U. The TCU 20 is for learning the clutch stroke data and the gear end in the learning step 4, and the TCU 52 The learning value is read and control during actual driving is performed.

In the learning step 4, the TCU 20 is connected to the computer 30, and the shift actuator 24 and the select actuator 25 of the gear switching actuator 26 of the unit U and the clutch actuator control unit 22a of the HCA 22 are connected to the TCU 20 for learning.

To perform learning, the HCA 22 is first automatically filled with oil.
To fill the oil, the filling coupler 5 is first connected to the oil supply hole U2 of the reserve tank U1 of the HCA 22, and the oil is filled by evacuating the reserve tank U1 of the HCA 22 and the oil passage. Next, it is confirmed that the oil level is within the standard, and finally, it is confirmed by the clutch stroke sensor 32 (see FIG. 2) attached to the HCA 22 that the clutch stroke is within the standard. The data is transferred to the TCU 20 via the actuator control unit 22a. The transferred data is further transferred to the computer 30.

Next, a gear end learning instruction is output by an instruction from the computer 30 (keyboard push button by an operator), and learning is performed based on a gear end learning program stored in the TCU 20.

Here, the gear end is a position where the shift fork 27 and the shift arm 28 are completely connected, and each gear in the gear mechanism 23 is connected (even if the shift actuator 24 and the select actuator 25 are operated under the same conditions) The above shows the position where the shift arm 28 does not move to the shift fork 27 side), and learning for starting the engine. In addition, along with the gear end learning, continuity confirmation of various sensors such as a parking position sensor attached to the unit U is performed, and the neutral position is learned.

The shift actuator 24 shifts the shift arm 28 in response to a command from the TCU 20 (shift operation signal S3). The shift actuator 24 detects a movement amount (shift movement amount A) [mm] of the shift arm 28 in the shift direction by a position sensor (not shown) disposed therein, and a signal indicating the shift movement amount A. (Shift movement amount signal S4) is transmitted to TCU20.

The select actuator 25 selects the shift arm 28 in response to a command (select operation signal S5) from the TCU 20. The select actuator 25 detects a movement amount (select movement amount B) [θ] of the shift arm 28 in the selection direction by a position sensor (not shown) disposed therein, and a select indicating the selection movement amount B. The movement amount signal S6 is transmitted to the TCU 20.

Further, a signal S9 indicating the clutch stroke ST) [mm] detected by the clutch stroke sensor 32 attached to the HCA 22 is transmitted to the TCU 20 via the clutch actuator control unit 22a.

When the learning is completed, the gear end learning data is transferred to the TCU 20. The transferred data is further transferred to the computer 30.

Next, the unit U for which the gear end learning has been completed is removed from the TCU 20.
Then, the computer 30 associates the transferred clutch stroke data and gear end learning position data with the serial number of the unit U, and outputs it from the printer as, for example, a three-dimensional barcode 29, which is attached to the unit U, and the conveyance The product is transferred from the pallet 3 of the conveyor 2 onto the transport carriage 53 and transported to the vehicle assembly factory 51. Alternatively, the linked data of the plurality of units U may be collectively read from the computer 30 to the compact disk 31 and the plurality of units U may be transported to the vehicle assembly factory 51 together with the compact disk 31.

The unit U transported to the vehicle assembly factory 51 is connected to a TCU 52 previously assembled to the vehicle body W as shown in FIG. 3, and reads the three-dimensional barcode 29 attached to the unit U with a barcode reader, or Based on the serial number of the unit U, data is read from the compact disk 31 and written to the TCU 52. Based on this data, subsequent synchronization position learning, clutch touch point learning, and clutch wear coefficient learning are performed.

These synchronization position learning, clutch touch point learning, and clutch wear coefficient learning cannot be learned in the state of the unit U, but must be performed in the state of a complete vehicle that is coupled to the vehicle body W together with the engine and can drive the tire.

Here, the synchro position learning is a learning for indicating a position where the shift fork and the shift arm start to come into contact with each other so that a shift can be performed.
The clutch touch point learning is learning for indicating a position where the clutch is connected to the engine so that the clutch can start.
The clutch wear coefficient learning is learning for reducing a shift shock.

In a state where the vehicle body W unit U is mounted, an engine speed sensor E2 attached to the engine E and an engine torque sensor E1 are connected to the TCU 52, and the engine speed sensor E2 is connected to the engine speed (engine speed). The engine speed N) [rpm] is detected, and an engine speed signal S7 indicating the engine speed N is transmitted to the TCU 52. The engine torque sensor E1 detects the torque of the engine E (engine torque ET) [N], and transmits an engine torque signal S8 indicating the engine torque ET to the TCU 52.
A driving force F from the engine E is transmitted to the gear mechanism 23 via the clutch 21. The driving force F transmitted to the gear mechanism 23 is transmitted to the driving wheels via the transmission system.

Further, the TCU 52 is electrically connected to a shift lever, an ignition switch, a hand brake, a foot brake, a door, a control panel, and a speaker, and receives and transmits data with each.
The memory attached to the TCU 52 stores a gear end learning program, a sync position learning program, and a clutch engagement position learning program in a rewritable manner.

According to the above-described learning method and learning device that the applicant has performed in the past, the gear end learning is performed after the HCA 22 is filled with oil and the clutch stroke data is learned. There is a bug. Further, in order to follow the number of production at the vehicle assembly factory 51, it is necessary to lay a plurality of unit assembly lines. In addition, it is conceivable to divide the oil filling into the HCA 22 and the gear end learning into two steps, but the previous setup such as removing the wiring between the TCU 20 and the unit U and reconnecting them is complicated, resulting in poor continuity. Frequent occurrence, workers and process space increase.

Further, the transfer of data using the three-dimensional bar code 29 or the compact disk 31 to the vehicle assembly factory 51 does not solve the problems described in Patent Documents 1 to 3.

Furthermore, the above-described work procedures for filling the HCA 22 with oil, gear end learning, synchro position learning, clutch touch point learning, and clutch wear coefficient learning are performed before the above-described conventional transmission learning method and learning device. In the assembly factory 51, since the unit U is coupled to the vehicle body W together with the engine, the work procedure to be performed is followed, so that the wiring connection as the vehicle W is always completed, that is, the TCU 52 and the unit as the completed vehicle W. Since it is assumed to be performed in a state where U is connected, workability is poor.

An embodiment of the present invention in which the above problems are solved will be described with reference to FIG. Note that description of portions similar to those of the conventional configuration (method) is omitted.
In the present invention, the two TCUs 20a and 20b are connected to the computer 60 in the learning step 4, the clutch actuator controller 50a of the dummy HCA 50 is connected to one TCU 20a, and the dummy gear is connected to the other TCU 20b. A shift actuator 54 and a select actuator 55 of the switching actuator 56 are connected. The dummy HCA 50 and the dummy gear switching actuator 56 use parts actually used for assembling the unit U.

The TCU 20a is connected to the shift actuator 24 and the select actuator 25 of the gear switching actuator 26 of the unit U, which are placed on the pallet 3 of the conveyor 2 and conveyed to the learning step 4, and the TCU 20b is connected to the TCU 20b. The clutch actuator control unit 22a of the HCA 22 is connected.

In this state, gear end learning including filling of oil into the HCA 22 and continuity confirmation of various sensors such as a parking position sensor and neutral position learning is performed simultaneously.

That is, it is confirmed that the oil level is within the standard, and finally, the clutch stroke sensor 32 attached to the HCA 22 confirms that the clutch stroke is within the standard, and the clutch stroke data is sent to the clutch actuator control unit 22a. At the same time, the gear end learning data including continuity confirmation of various sensors such as a parking position sensor and neutral position learning is transferred to the TCU 20a.

The data transferred to the TCU 20a and the TCU 20b is transferred to and written in the memory 22b of the clutch actuator control unit 22a disposed in the HCA 22 of the unit U in association with the serial number of the unit U.

The clutch actuator controller 22a is based on input signals from various sensors provided in the actuators in the HCA 22 and signals such as transmission gear position, engine speed, vehicle speed, and throttle opening obtained from an engine control unit (not shown). The actuator has a function of controlling the operation of the electric motor of the actuator, and the data is written in a surplus portion of the memory 22b that does not hinder the function of the clutch actuator control unit.

Then, the unit U in which the data has been written is transferred from the pallet 3 to the transport carriage 53 and transferred to the vehicle assembly factory 51, where the unit is assembled to the engine to form an engine assembly. And the data in the memory 22b is read into the TCU 52 and stored in the memory in the TCU 52, and the subsequent sync position learning, clutch touch point learning, Clutch wear coefficient learning is performed in the state of the completed vehicle.
The data written in the memory 22b in the control unit of the HCA 22 remains as it is.

The above is based on the premise that the mission factory is an independent form, for example, the engine was assembled at the body factory, the mission assembled at the engine was docked to the engine, and further assembled into the body to make a completed car, It is not limited.

As described above, according to the present invention, since the gear end learning including the filling of the oil into the HCA 22 and the conduction check of various sensors such as the parking position sensor and the neutral position learning can be simultaneously performed in one process, the work time is greatly increased. In addition, by effectively utilizing the memory 22b of the clutch actuator control unit 22a originally possessed by the HCA 22 itself, the data can be transferred to the vehicle assembly factory 51 in a state of being contained in the unit U. It is possible to solve the above-mentioned problems of the prior art such as damage and data seam management.

  A learning method and apparatus for a transmission according to the present invention is an automatic manual transmission (AMT), and automatically performs clutch operation (disengagement and connection of a clutch) in accordance with a shift lever operation by a driver. And a manual gear switching mode for performing gear switching, and a transmission in an automatic gear switching mode in which a driver can automatically perform clutch operation and gear switching without operating a shift lever.

DESCRIPTION OF SYMBOLS 1 ... Unit factory 2 ... Conveyor 3 ... Pallet 4 ... Learning process 5 ... Filling coupler 20,20a, 20b, 52 ... TCU
21 ... Clutch 21a ... Hydraulic piping 22 ... HCA
22a ... Clutch actuator controller 22b ... Memory 23 ... Gear mechanism 24 ... Shift actuator 25 ... Select actuator 26 ... Shift actuator 27 ... Shift fork 28 ... Shift arm 29 ... Three-dimensional bar code 30, 60 ... Computer 31 ... Compact disc 50 ... Dummy HCA
50a ... Clutch actuator control unit 51 ... Assembly factory 53 ... Transport cart 54 ... Shift actuator 55 ... Select actuator 56 ... Dummy gear switching actuator E ... Engine E1 ... Engine torque sensor E2 ... Engine speed sensor F ... Drive force U ... Shift Unit U1 ... Reserve tank U2 ... Oil supply hole W ... Car body

Claims (2)

A transmission learning method for causing a transmission control device to learn a reference position in a transmission,
At the transmission assembly plant, the parts other than the transmission control device are assembled into a unit, and the clutch stroke and gear end position are learned simultaneously using the two control devices in the state of the unit.
Write data to a memory that is Fusetsu the control unit disposed in the clutch actuator of the unit,
The unit in which the data is written in the memory is conveyed toward a vehicle assembly factory,
A unit is assembled to the engine at the vehicle assembly factory to form an engine assembly, the engine assembly is further assembled to the vehicle body, and the unit is connected to a control device pre-assembled to the vehicle body to complete the completed vehicle. Read the data written in the memory into a control device pre-assembled in the vehicle body,
Next, in the state of the completed vehicle, synchronization position learning, clutch touch point learning, and clutch wear coefficient learning are performed, and learning data is written in a control device that is pre-installed in the vehicle body to obtain a completed vehicle that can run. Learning method for machine. A transmission learning device used in the transmission learning method according to claim 1,
Assemble parts other than the control unit out of the transmission on the pallet transported by the transport conveyor in each step arranged along the transport conveyor laid in the transmission assembly factory to complete the unit,
Next, the unit is transported to the learning process by a transport conveyor,
The learning device arranged in the learning step is configured to simultaneously learn the clutch stroke and the gear end position for the unit,
The learning device includes a computer, a first control device connected to the computer, a second control device, a dummy clutch actuator connected to the first control device, and a dummy connected to the second control device. The gear switching actuator
The first control device is further connected to a gear switching actuator of the unit;
The second control device is further connected to a clutch actuator of the unit;
A learning apparatus for a transmission, wherein the learning of the clutch stroke and the gear end position is performed simultaneously.

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