JPS612955A - Controller for automatic transmission of vehicle - Google Patents

Abstract

PURPOSE:To realize best fuel consumption and maximum power property by varying both the speed changing characteristics of a plurality of gear shift positions and the characteristics of locking-up operation in accordance with operations performed at two-wheel driving time and four-wheel driving time. CONSTITUTION:The outputs from a car speed sensor 501, a sub transmission selecting lever setting position sensor 601, an accelerator operating amount sensor 602, a shift lever position sensor 603 a pattern selecting switch 604 and an engine revolutional speed sensor 605 are input to an electronic controller 600. Bases on the data relating to locking-up clutch engaging points, the controller changes the locking-up changing characteristics used at the two-wheel driving time and the four-wheel driving time and further changes the speed changing characteristics of a plurality of speed changing gear positions used at the two- wheel driving time and the four-wheel driving time. The controller can control a transmission on the bases of the data relating to both optimum speed changing point and locking-up clutch engaging point, on account of which the desired characteristics concerning the best fuel consumption and maximum power may be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field 1] The present invention relates to the control of an automatic transmission for a vehicle, such as an electronically controlled all 1'< l transmission, which is combined with a sub-transmission for four-wheel drive.

[Prior art 1] The control system of this type of automatic transmission for vehicles is independent of the setting position of the shift lever, which has a shift left mechanism of the conventional 4-wheel drive auxiliary transmission (4-wheel drive i-Lansnor). Tohen 31
! The speed point or speed change pattern for automatic speed control of the machine is set. However, in the predetermined setting positions of the shift lever such as 2-wheel drive, 4-wheel drive high gear, and 4-wheel drive low gear of the auxiliary transmission, there may be differences in driving regulations or power performance of the vehicle41. , 1 shift (all 1! Levers setting f < 7 WI in J3 and the main transmission's shift points are only set to the same setting) 'C has the advantage of an automatic transmission for four-wheel drive -15 ) I don't show off.

[Object of the Invention 1 The object of the present invention is to provide an electric J'-1, 11-1 transmission,
Nl + control'@ equipment of automatic transmission for vehicle which is combined with 4-wheel drive static 1 transmission 1-Transmission shift point data or fluid transmission with direct clutch clutch for the setting position of each select mechanism of the transmission
In automatic transmissions equipped with 11 clutch engagement J-data, the desired characteristics such as best fuel efficiency and maximum power are 19
1) According to the setting IQ@ next to each select 11! ,
:Shift point data and/or direct clamp engagement t:,
Based on the Y-ta], it controls the three gearboxes, and also controls the 2-wheel drive, 4-wheel drive, 4-wheel drive high gear, and 4-wheel drive (1 (gear) and the 4-wheel drive status of multiple gears. A, II a of an automatic transmission for a vehicle that can maximize the advantage of the setting position tlf'r of a select mechanism equipped with a selective sub-transmission.
ll equipment is provided.

[Structure of the Invention] The 8 yen 11 invention of the automatic transmission for a vehicle (control device for a vehicle) of the present invention is a control device for an automatic transmission for a vehicle that controls an E transmission and a sub-transmission for one-wheel drive. , an electronic IT/II control device that manually adjusts the vehicle's running line Fl, and an oil 1f that is controlled by the electronic MI control device d and that shifts the automatic transmission.
In the control '11 device consisting of a control device jd, etc., the electric f control H1f'll or the sub zero gear shift lever,
The shift switch I is provided with midpoint data depending on the set position H of the shift mechanism, and the midpoint data is provided to the L reflex 1 according to the 19 fixed position of the mechanism. The main transmission is controlled based on the Iia data, and the second
The invention is a control device for an automatic transmission for a vehicle that connects a main transmission equipped with a direct-coupled Clara F4=3 fluid transmission IJ device and a sub-transmission for four-wheel drive. 16 In the II control system consisting of an electronic control device and a hydraulic control device which is controlled by the electronic control device and changes gears of the automatic transmission, select levers 1 to 1 of the side food 'I!E machine are operated. , e-shift switch, etc. L reflex l-111 structure settings 1Fi 4! Detection, front power distribution i' 1lIII O1l system is according to the sub-transmission's hirek 1~mechanism setting i 1 device: 1 change) Equipped with 1 white knot gangway engagement point data, fin 91~I! ! 1. Set the gear shift point data according to the device. (The vehicle is configured to control the first transmission, and furthermore, the third invention is a vehicle having a four-wheel drive sub-transmission in which the four-wheel drive states of the first transmission and a plurality of gears are selectable. 1111 control system of the automatic transmission for the automatic transmission, and an electronic control device that inputs the running condition of the vehicle, the electronic IT,
The oil f [from the control device and the control device that changes the speed of the automatic transmission] is controlled by the
The set position of the reshift mechanism such as the lever or select switch is detected, and when the set position of the sub-transmission fin 91-mechanism is set to a low gear, the The configuration is to prohibit automatic gear shifting.

[Effects of the Invention] With the above configuration, the control device for a vehicle automatic transmission of the present invention provides the following effects.

The configuration of the first invention provides the following effects.

b) Each setting position of the auxiliary transmission's select i-lever, select switch, etc. on the 1- and rect-i sides (measure in advance according to d) Iζ is based on the optimum shift point data at bar 10 = 1
- Since the transmission is controlled, it is possible to achieve the desired characteristics (η) such as the best fuel efficiency and maximum power.

-1) Since the main transmission is controlled by the shift data according to the set position of the seven torque mechanisms such as shift lever and torque 1-sweep, shifting becomes frequent and
The reduction ratio of 1 is reduced to 19.

The configuration of the second invention provides the following effects.

b) Control the main transmission υ11 by measuring in advance according to each setting position of the L left mechanism such as Torque 1-lever, Torque 1-swip, etc. of the auxiliary transmission or by using optimum shift point data and direct-coupled clamp engagement point data in the M frame. Therefore, desired characteristics such as best fuel efficiency and maximum power can be achieved.

The configuration of the third invention provides the following effects.

B) Rake 1 ~ Lever, I? Rec 1-Switch/, r which [! /71 ~ The setting position of the mechanism is set to 4-wheel drive low gear (kN is] - prohibits automatic gear shifting of the transmission)
- Because I'm in the middle of the day 1: Weird m1ff's own i! IJ foundation m 1
1. You can reduce the size of 'I'.

[Example] Next, the present invention will be explained with reference to the drawings and examples.

Figure 1 shows the four-wheel drive automatic transmission gear train 1 and Figure 2 shows the gear train A. 10G main transmission (A-4-speed automatic transmission with bird drive 1R140 (output of planetary transmission of 1-speed automatic transmission 10) auxiliary transmission 4 connected to shaft 32 Indicates 1-lance fj for wheel drive.

4-wheel drive 1 to Lancef 740 is an engine [541tJ (
4-speed automatic transmission 10, No. 1]
The output shaft 42 is connected to the rear wheel drive shaft 1] and the second output shaft 52 is connected to the front wheel drive shaft 1.
3.

The 4-speed automatic V1 transmission 10 is a fluid transmission 14! i? Guaru logical system 1 ~ Rukuni 1 King Mbaata, A-bird live machine 1M
O[), and forward 3rH? It is equipped with a base 1 [9 underdrive mechanism UI).

The torque converter 1 is connected to a fixed part via a pump 11 connected to the output shaft of the converter T, a turbine 13 connected to the output shaft 12 of the inverter T, and a one-way clutch 14)g! Withered stator 15 and 1l11
The output shaft 12 of the torque inverter, which consists of a coupling clutch 16, is the input shaft of the A-bar drive mechanism OD.

The A-bar drive mechanism (Or) includes a multi-disc clutch CO1, a multi-disc brake BO, and a reverse clutch 1:0, which are frictional engagement elements, and the selective engagement of these frictional engagement elements causes the components to close to the transmission case. A planetary gear set p which is fixed to a fixed member, such as, or connected to an input shaft, an output shaft, or other component, or whose fixed or sequential connection is released.

Karato [ru. 1 ~ Luk] The output shaft 12 of the converter T is Δ-
It serves as the input shaft (12) of the drive mechanism 01).

The planetary gearlet PO is connected to the input shaft (12), the box carrier 21, and the output shaft 25 of the A-bird drive mechanism-9=OD! Ring 1-A22.1
v1 When it is rotatably fitted onto the human power shaft 12 and fixed to the transmission case via the knob, the ri'not fC
The 1:I rear 211J is connected to the sun gear 23 and the carrier 21 via the latch FO toward knee/J, and is connected to the sun gear 23 and the carrier 21 in parallel with the clutch CO.
It consists of a planetary pin Δ ring 24 which is held at the front and meshed with the front gear 23 and the ring 1V72.

The output shaft 2;) of the overdrive Iff structure OI') also serves as the human power shaft of the under-dry/151 structure LJD with three forward speeds and one reverse speed.

The underdrive mechanism consists of a friction body (a multi-disc clutch C1, J, and C2) and a multi-disc brake 131.
．． 132 and 133, -h direction rat f11 and [
:2 and front planetary 1″77t?tuto[)1,
It consists of a rear planetary gear set P2.

Rear planetary gear f-P2+; L, Koontz f-
The ring gear 31 is connected to the input shaft (25) through 01, and the underdrive mm4 is connected to the output shaft 32 of the underdrive mM4. ^rj is connected to the input shaft (25), and is connected to the play j1-S1, the brake B1, and the one-way shaft ~/IN connected in series with the play:)132 and brake 132. A ring gear 34 is fixed to the transmission tars through the ring gear 34, and a planetary pinion 35 is meshed with the ring gear 34 and the ring gear 31, which is supported by the rotating gear 71 on the -1 and toss 733. Become.

^l; Stage planetary gear set I-1) 1 is play 41
33a-3 and a one-way clamp 1-2 parallel to the brake B3, the carrier is fixed to the transmission coos.
! 3G, a ring gear 37 integrally formed with the ring gear 34 of the 19-stage planetary gear seat P2, a ring gear 38 connected to the output shaft 32, and a carrier: (6
It consists of a planetary pinion 39 which is supported by a rotation mechanism and meshed with a ring gear 37 and a ring gear 38.

This four-wheel drive automatic transmission is shown in FIG. Selective engagement of each clutch and brake, which are FFP frictional engagement elements, depending on Eating speed and
The reverse gear 110 is shifted only by manual gear shifting. .

The shift lever (not shown) installed in the driver's seat to drive the manual valve of the Hydraulic System II In 100 is
Bark), R (reverse), N scene 1), 1)
(Drive), S (Second), and 1 (11-) ranges.
2), 1st gear (1), and the operational relationship of the clutch and brake are shown in Table 1.

In Table 1, O indicates engagement of the friction engagement system and release of Xta;
(Lock) indicates engagement of a one-way clutch.

Table 1 Hydraulic control of 4-speed dynamic transmission 10! ! Place 100 in oil!
f pump 101, pressure regulating valve (regulator valve) 130
, second L1 force adjustment valve 150, cooler bypass valve 105,
Brage relief valve 106, reverse clutch sequence valve 110, and valves 1 to 11 according to the schedule.
- Generates pressure (L S 11 liter valve 200, cutback valve 145, direct clutch control well 120, manual valve 210.1-2 shift 1-valve 220.2-3 jet 1 t)
230.3-4 shift valve 240, solenoid valve S1 that controls the 1-2 shift 1-valve 220 and 3-4 shift valve 240, solenoid valve S2 that controls the 2-3 shift valve 230, direct clutch control valve Solenoid valve S3 that controls the 120, Intermediate valve 2 that adjusts the oil supply to the play 4-81.
45, low coast modulator valve 20 that adjusts the oil pressure supplied to the brake B3, an accumulator 260 for the clamp C1, an accumulator 270 for the clutch C2,
Brake B2 74 combulator 280, clutch Co
, CI, C2 and brake BO, [31,132
Flow 1 with a valve to control the flow rate of pressure oil supplied to each hydraulic servo! 1 till valve 301.302.
303.304.305.306, play +130,1
11. 112, 113, B4 hydraulic servo [3-O, 1
3-1, 13, 2, [3-3, I'3-4, Clara/
Go, CI, C2, C3, C4 hydraulic servo C-0, C
-1, C-2, C-3, and C-4, as well as oil passages connecting each valve dj, clap, and brake oil F1 cylinders. The solenoid valves S1 and S2.83 are not shown in the figure.
According to vehicle running conditions such as J, S, medium speed, and 1 engine load on the electronic control equipment (ON, OF+-), the 1-2 shift valve 220.2-3 shift valve 230.3 −
4 shift valve 240 is controlled. These shift 1 to valve 22
0.230.240 is the setting 1 (I
Hydraulic source and each clamp, J, and brake according to JI: 1-
Oil F "Selectively connects the servo.

The manifold valve 210 is installed in the driver's seat.
- The levers are connected and can be manually operated to shift 1 - P (park), R (reverse), depending on the lever range.
N(2]-1~ral), [)(drive), S(1?
Kant), 1. − (Low) Everyone should move to buy.

Table 2 shows the communication status between oil passage 1 and oil passages 2 to 5, which are connected to the range, to each shift 1 of shift 1 to lever. 1°0 indicates the case where they are in communication and line pressure is supplied. , × represents a state of IJI pressure.

Transfer '40 J31J in FIG. 2 includes cold gap engagement elements such as clutch C3, brake B4 and clutch C.
4 and the output shaft 32 of the planetary gift 1j2t Pi, 1-) 2 are connected to the input shaft, and the first output shaft 42 of the transfer arranged in the input shaft (32) is connected to the human power shaft (32).
) and the first output shaft 42, a four-wheel drive sleeve 51 rotatably fitted around the first output shaft 42, parallel to the input shaft (32) are arranged in parallel and in the opposite direction to the first output shaft 42 ().
The transmission mechanism 53 between the second output shaft 2 and the sleeve 51 and the second output shaft 52 is moved to the right. Planetary-1
The cult P includes a 1J-ring gear 44 spline-fitted to the end of the input shaft (32), a planetary binion 45 that comes out of the sun gear 44, a ring gear 46 that meshes with the planetary binion 45, a3, and the sun gear 44. The planetary binion 45 is rotatably held and the above-mentioned]・Lanth cover 74
=1-V rear 4 connected to the tip of the first output shaft 42 of 0
Consists of 7. In this embodiment, as shown in Fig. 4, the brake B
4 is a multi-plate friction brake for engaging the ring gear 46 with the transfer case 48;
1, Clara = fC3 is operated by a hydraulic servo f'3-4 consisting of a piston 49P installed in The cylinder 5 connected to the carrier 47 is connected to the ring gear 44 and the rear 47.
0 and the screws installed inside the cylinder 50]
It is actuated by a hydraulic servo C-3 which is configured as a servo. The clutch C4 drives the first output shaft 42 connected to the carrier 47 and the second output shaft 52 of the transfer 40. This is a multi-disc friction clutch for use in the transfer case 48, and is actuated by a hydraulic servo C-4, which is comprised of a cylinder 58 rotatably supported by the transfer case 48 and a piston 58P that is necked within the cylinder 58. The transmission flf4fM53 includes subblocks 1 to 56 formed on the sleeve 51, subblocks 1 to 55 spline-fitted to the second output shaft 52, and these threads 1.
- Consists of a chain 57 stretched between 1 get.

A parking gear 59 is provided around the outer periphery of the cylinder 50 of the hydraulic engine C-3.
When the shift lever is selected to the parking position N, the pawl engages the parking pawl (U not shown) and the first output shaft 4
Fix 2 by 1J.

60 is the clutch C3,0 of the 4-wheel drive transnor 40
Hydraulic pressure 1 novo C-3,0 of 4a3 and bu1no 4-84
A transfer valve body LJ is installed with an oil 11 control 31I device that supplies oil 1F to 4J and 114, and 61 is a child A oil pan. Clutch C3, C4
The oil supplied to the hydraulic servos C-3, C-4, and B-4 of the brake and brakes is supplied to the transfer control device through an oil passage 64 provided in the transmission case 48. 400 is led to the 1 Herance 77 valve body 60 in which the valve body 60 is stepped.

During normal running bt, the oil If servo 0-3 is supplied with the line pressure supplied to the oil El:a+' control system of the automatic transmission, and the clutch C3 is engaged [! Close the oil 1F pumps B-4 and 0-4, and then release the play 4-84 and clutch C4. As a result, the ring gear 44 of the planetary gear set Pf is connected to the carrier 47,
Power is transmitted from the input shaft (32) to the first output shaft 42 at a reduction ratio of 1, resulting in two-wheel drive running (i) with only the rear wheels. , planetary vinyl 45, 11 rings 47J and 11 rings are transmitted to the first output shaft 42 through the clutch C3 without going through the rings l'/'4G. There is no load on the gear, and the life of the gear increases.While driving in 2-wheel drive, you need 4-wheel drive (also known as C-yl). 1
Heransuf 7II11 control cap I00 oil ITIJ-BOC
When line pressure is gradually supplied to 4 and the clutch C4 is engaged with the circle H1, the first output shaft 42 and the sleeve 1 are connected, and the transmission 4M53, the second output shaft 52, and the pulley 11 vent shaft B ( b M h
is transmitted from the input shaft (32) to the first output shaft 42. I3J
, and the power transmission to the second output shaft 52 at a reduction ratio of 1 is completed, and the four-wheel drive direct-coupled running state (high-speed four-wheel drive state) is (;I
It will be done. During this 4-wheel drive driving, it is necessary to increase the output l/lux, such as on steep slopes! When the shift 1 lever 401 is set to manual shift], the oil L1 to the oil H servo is switched between high-speed 4-wheel drive mode and low-speed 4-wheel drive mode. Aki'-l router
1] to 1]-le valve 460.
While supplying line 1- to J'-bo 13-4, the oil pressure of oil servo 0-3 is applied at appropriate timing (
JF ft-, gradually engage the brake B4, and smoothly release the clutch C3. As a result, the ring gear 44, gear 17, rear 41, etc. are released, and the ring gear 4G is fixed, and the power is decelerated from the input shaft (32) via the first non-gear 44, the planetary vinyl 45, and the carrier 47, and is output to the first output. It is transmitted to the shafts 42 and 42 and the second output shaft 52, and 1g of the large 4-wheel UJ true speed driving state (low-speed 4-wheel drive state) of 1 herk is shown in Table 3. play, 1-
84, the engagement and disengagement h of the clamps C3 and C4 (and the running state of the vehicle). In the example 3゜Owl, when the ratio of the number of teeth between the 1J gear 44 and the ring gear 4G of the planetary gear mechanism is λ, and the stroke ratio λ is 0.5, the reduction ratio - (1
+λ)/λ=3.0.

The trans-noise control device 400 of the four-wheel drive transfer 40 is connected to a shift lever 401 installed in the driver's seat via a link mechanism 402, and a four-wheel drive side valve 410. Inhibitor valve 4 for switching between high speed (direct connection) and low speed (deceleration) in
40, 1QtJ is applied between the inhibitor valve 440 and the oil 11 revo C-3, and the accumulator valve 440 is
Luble r460.74-, J, lzshi I 490 and comparison 480 h upshift l-<14->l1
4) The timing mechanism 430 and the oil passage 1M connected to the oil passage 1 are connected to the front j+L dip valve 440.
f-i-.

(hydraulic pressure related to medium thickness method 1q) and medium speed is set 1
1t1 and above 1t1) Transfer manual adjustment for automatically controlling high and low speeds of 4-wheel drive
'l till 11 structures! +00 and oil servo [3-
Supplying hydraulic oil to 4 111 Installed in oil path 1N.
520 with check valve, oil F
30, and an orifice 540 with a block valve arranged in a connecting oil passage 1P between the inhibitor valve 440 and the upshift 1 to timing let side 430.

The transfer manifold ζAl 410 is installed in the driver's seat.
The inboard 411 has a spool 420 connected to the shift lever 401 via a link mechanism 402, and is connected to the line pressure generating oil path 1 of the hydraulic control circuit of the four-speed automatic transmission 10. Alamy Port 1-413, which connects to the road, Outport 415, which connects to the oil road 7, and Drainbow 1/417.419. When the spool 420 is set to 2-wheel drive (112Hi/position), the lancenor manual valve 410 connects the oil path 1 and the oil path 6, and also connects oil +t87 to the train port 419.
Contact 4-wheel drive high speed gear (+14) I1/IN to install oil passage 1, oil passage 6J3J, and oil passage 7!
When the four-wheel drive low speed gear (141) is set, oil passage 1 and oil passage 7 communicate, and oil passage 6 is connected to the drain boat 417.
will be contacted.

The inhibitor valve 440 is connected to a spring 450 from the bottom shown in the figure.
was officially established and 1. Nisbourg 441 OJ, σ Saisor 4
41 and 6 rows of plungers 442, and the spool 4
41 are all Irm-1'4 "C streaks") link 4
! The sleeve-shaped land 445 at the lower end shown in the illustration where +O is fV CQ, the first end land 447 shown in the illustration, and the intermediate land 44
I like 6.

The plunger 442 is attached to the spool 441 of ^j1.
, a large-diameter lower end land 448, and the first end land 4.
It has a lower end land 449 having a larger diameter than 48. The spool 441 and the plunger T-442 form a lower end oil chamber 451, first and second intermediate oil chambers 452 between the upper end land 447 such as the sleeve-shaped end 445 and the intermediate land 446.
．． 453, an oil chamber 454 between the spool 441 and the plunger 442, and a -1 end chamber 45G.

In this inhibitor valve 440, when the spool 441 is set in the F direction in the figure, the lower end oil chamber 451 communicates with the medium speed pressure oil passage 1M via the curve 443 of the sleeve-shaped land 445, and the first intermediate oil chamber 452 connects the line pressure oil path 1 and the deceleration oil path 1N, the second intermediate oil chamber 453 connects the direct connection oil path 1P and the drain 1-457, and the spool 441 is set downward in the figure. The lower end oil chamber 451 is connected to the drain 1-4 through the track 443 of the sleeve-shaped land 445.
58, the first intermediate oil chamber 4521 and deceleration oil passage 1N
and the drain h 459 are connected to the second intermediate oil chamber 4.
53 connects the line 11-oil path 1 and the direct connection oil path 1F), and the oil chamber 454 connects with the oil U[light/l oil path 1M associated with the constant type dual speed = 25-maro, The end oil chamber 456 is always in communication with the front two oil passages 6.

Accumulators 1 to 1 valves 4601.1, valves 4601.1, 4 with springs 470 installed in the bottom 1j of the figure.
71, and the spool 471 has a lower end land 4'/3
, intermediate land 475, and a predetermined size p larger than these two lands (with the child end land 477 on the right, as shown in Figure 1).
・From the bottom end oil chamber 461, intermediate oil chamber 463.46! ),
1, one end chamber 467 is formed.

This accumulator:Int (1-lube i 460, the lower middle oil chamber 463 is always [,1 oil if ribo C-3
The intermediate oil chamber 4G5 is always in communication with the line pressure oil path 1, and the oil pressure of the oil path 1Q is fed back to the first end oil chamber 4671, and the lower end oil chamber 461 has a throttle. Oil passage 1Q via 480 and accumulator 490
Hydraulic pressure is supplied to the connected oil path 1R.

! - Transfer automatic control system 500 is small)! t
Gonri 501, a speed control circuit 600 which receives the output of the vehicle speed sensor 501 as input, is installed in the oil passage 1M connected to the oil passage 1. It consists of an electromagnetic solenoid valve S4 that is turned ON and 011 by the output.
) or less 0] -1: The line pressure of oil line 1 is connected to C oil line 1M, and the setting (ON when it is -1 or more)
The oil in the oil line 1M is If4! -1I pressure. As a result, oil pressure related to the vehicle speed is applied to the oil path 1M.

If we trace the ON and OFF states of the solenoid valve to 9 constant μ, we get the speed change control circuit 6 (
) 0 odor 'C'fV Since the structure can be easily changed, it is easy to change the driver's position according to the driving hh < passage situation i f medium running (J article f1).

The oil passage 1J enters the intermediate oil chamber 465, and the oil passage I is connected to the 7111-pressure lever C-4 via the brake valve I-1 throttle 530.

The operation in the transfer unit 1 setting range will be explained. .

aH-Lance Famani 3! When the Al valve 410 is set to the 112 range, the oil line 7 is pressurized by +Jl (therefore, no power is transmitted to the sleeve 51 and the two-wheel drive mode 11B is maintained. Line pressure is also supplied to the oil line 6). The spool 441 and plunger 442 of the inhibitor valve 440 are set downward in the figure, and the oil passage 1N is connected to the drain boat 459 and connected to the drain boat 459, and the J and Riruki B4 are connected to the drain boat 459.
1 pressure and the oil passage 1 is discharged n-, so the pressure in the clutch C4 is discharged. , oil line) connects to oil line 1 and is equipped with a check valve 540 and an Aki comb regulator control valve 460.
The clutch C3 is connected to the oil passage 1Q via the oil passage 1Q, and the clutch C3 is engaged. Therefore, the transfer 40 is l-12 (two-wheel part 1
1Ji blight state).

b) When the transfer manual valve 410 is set to the 114 range, line pressure is supplied to both the oil passage 6 and the oil passage 7. The line pressure supplied to the oil line 6 is applied to the spool 4 of the inhibitor valve 440 and the plunge +7442.
is set at the bottom of the diagram, and oil path 1N is drain 1-4.
59, the line pressure U431 is transferred to the oil passage 7, and the line pressure is transferred to the oil passage 7, which engages the Clara f C4. This results in
1-Lance-Noah 401 and 114 (four rings tied together).

0) When the transnoannical valve 410 is set to the 1-4 range, the pressure in the oil passage 6 is exhausted, so the plunge turtle 4
42 is set to -1/J, and since the line If is supplied to the oil path 7, the clutch 04 is engaged and the C4 four-wheel drive state (11) is set. 3. Medium speed is set (from Po1 to 1-). Solenoid valve S4 is set to
When No. 10 is set to 1-4 range, line pressure is supplied to No. 3 unoiled passage 1M. Therefore, line pressure applied to oil chamber 454 is In this case, the setting remains in the F direction shown in the figure, preventing the gear shift from occurring and preventing engine A-bar run.

When the transfer manual valve 410 is set to the 14 range while the solenoid valve S4 is turned on when the medium speed is below the setting 11r1, or when the vehicle speed is set to
1, the solenoid valve S4 is O "[:", when the i~lansnormanical valve 410 is in the 14 state ttMguII!
When it is turned on (, 1 oil passage IM is 1] lft, 1 spool 441 is set upward in the figure by the action of spring 450, and oil passage 1 and oil passage 1N are connected to each other, and the hydraulic servo is activated. Hydraulic oil is supplied to B-4 (drain, oil path 1P drains 1 to 4!) and contacts 7, and the hydraulic pressure of hydraulic servo C-3 of clutch C3 is increased to JJI pressure.

As a result, i to transfer 4() enters a low-speed four-wheel drive state. Once the vehicle enters the low-speed 4-wheel drive state, even if the vehicle speed exceeds the set value and the solenoid valve S4 is turned off, the line pressure of the oil passage 1M is applied to the oil chamber 454 of the inhibitor valve 440, and the spool 441 is locally applied. Sleeve land 4
Since the spool 441 is applied to the lower end oil chamber 451 through the 45 oil r1443, the spool 441 is not displaced and the low speed four wheel state is maintained.

First to fourth solenoid valves S1 depending on the vehicle running condition (■);
As shown in FIG. 5, the speed change control circuit (combicoater) 600 that opens and closes S2, S3, and S4 is 1! Setting of the select lever which is the select machine IM 1b position S - [Rei detection 4 sub-speed 111? Rec 1 lever setting position l! Nri 601, Medium speed L Nri 501, Axle operation ('1l) that detects medium speed
il also (detects the opening of the throttle 602, detects the shift lever 401 of the white II transmission from position 1 to position 81), detects the lever position 603, light driving, Shototsusho (1, Pa 1 Barsho (j)
The selected running pattern is selected from among such as Ref 1~Switch 604, Engine same rotation speed Tortoise S (
Detects the proper engine rotation position 605, incoming power from these 1-610, drive signals 5t) 1.51) 2.5t) 3 to solenoid valves 81 to S4, 611 to SO2 output capo-1, Central Processing System CP LJ1 Random Acquisition [Sl'< A M, Figures 7 and 8
A read-only ROM that stores the epidemic velocity diagram shown in the figure.
Karakuru.

Next, the operation of the speed change control circuit 600 according to the present invention will be explained based on FIG.

Turn on the starter key and start the engine υ (701
), then read the Irino Jyu number from each Senri (7
02) Determine whether the setting position of the auxiliary transmission's helect lever is 4-wheel drive high gear + 14 or old. 703>
, l-14 (if -, from 10th speed hinge 501 (jζ fed medium speed signal @ SV, axle operation & 1t?? 602
Based on the accelerator operation 01 t1 Hakuyumi S△ supplied from the pattern select switch 604 and the -1 pattern signal SR supplied from the pattern select switch 604, 1 [1[1]
Selecting a predetermined gear from this shift diagram 1: First, select the drive lever 86 from among the solenoid valves S1, S2, and S4. A drive signal Sl'll, 5l)2, S at a predetermined timing is used to reduce the shock of
Selectively output O2! -(704), f<O
In the transmission diagram stored in M, the preset 1
It is determined whether or not the vehicle speed is within the 1st gear knob operation range, and the vehicle condition is set to 11/f from the suspension of the accelerator operation f1 (705).
70G), if l-4, the above (702) is executed again, and when 14 is 11 <
, act operation h1, accelerator operation fil l supplied from h1 hint 602, Ii month SA1 pattern rek 1 to ir line pattern signal SR supplied from switch 604, predetermined from a shift diagram stored in ROM in advance. Solenoid valve S1, S2, S4 to select gear [9]
In addition to selecting the drive level from among the options, it also reduces the shock when changing gears while driving.
Drive at the specified timing to reach the goal! ! ll signal 31) 1
, SO2,5F)4 is selectively output (707),
In the shift diagram stored in the ROM in advance, the vehicle speed and accelerator operation 1 are within the preset 179711 operating range.
It is determined whether or not the vehicle state consisting of
1) etc. are executed, and the select lever setting position of the sub-transmission is determined (712), or the sub-transmission is shifted] -
Todoroki 1 arithmetic is not t-s (712) - again (7F + 2) less than 1
・is executed.

4. If of the drawing! Illi 1. Fig. 1 is a schematic diagram of the four-wheel drive automatic transmission (Fig. 8), Fig. 2 is a skeleton diagram of the four-wheel drive automatic transmission, and Fig. 33 is the four-wheel drive automatic transmission.
・Lance Tsuno・'s oil 11 control I i! ! Fig. 4 is a cross-sectional view of the 4-wheel drive transfer system according to the present invention, and Fig. 4 is a circuit diagram of the 4-wheel drive transfer hydraulic system according to the present invention, No. h + n 1. L Block-1 of the speed change control circuit according to the present invention, FIG. 6 shows the speed change control circuit 711-'7t---1 according to the present invention, and FIG. 7 shows the two-wheel drive 0.1 speed change according to the present invention. FIG. 8 is a J graph showing a lock-up pattern, and FIG.

Claims (1)

[Scope of Claims] 1) A control device for an automatic transmission for a vehicle having a main transmission and a sub-transmission for four-wheel drive, comprising: an electronic control device that inputs vehicle running conditions; and the electronic control device. and a hydraulic control device for shifting an automatic transmission, wherein the electronic control device is provided with shift point data for a main transmission according to a set position of a selection mechanism of the auxiliary transmission, A control device for an automatic transmission for a vehicle, characterized in that the main transmission is controlled based on shift point data corresponding to a set position of the mechanism. 2) A main transmission equipped with a fluid transmission device with a direct coupling clutch, and 4
This is a control device for a vehicle automatic transmission that has a wheel drive auxiliary transmission, and includes an electronic control device that inputs vehicle running conditions, a hydraulic control device that is controlled by the electronic control device, and changes the speed of the automatic transmission. a control device comprising: detecting a set position of a select mechanism of the sub-transmission; the electronic control device comprising direct-coupled clutch engagement point data of the main transmission according to the set position of the select mechanism of the sub-transmission; A control device for an automatic transmission for a vehicle, characterized in that the main transmission is controlled based on shift point data corresponding to a set position of a select mechanism. 3) A control device for an automatic transmission for a vehicle that has a main transmission and a four-wheel drive sub-transmission that can select four-wheel drive states of multiple gears, and is an electronic control device that receives vehicle running conditions as input. , a control device comprising a hydraulic control device that is controlled by the electronic control device and changes gears of an automatic transmission, detects a set position of a select mechanism of the sub-transmission, and detects a set position of a select mechanism of the sub-transmission when the set position of the select mechanism of the sub-transmission is set to a low speed. 1. A control device for an automatic transmission for a vehicle, characterized in that automatic gear shifting of a main transmission is prohibited when the gear is set to gear.