JPS60220248A - Automatic speed change controlling method of electronic control type automatic speed changer - Google Patents

Abstract

PURPOSE:To prevent an extraordinary wear of a brake disc and deterioration of riding feeling by positively carrying out a shift-down independently from an automatic preset speed change pattern in a steep downward slope. CONSTITUTION:It is judged from the position of an accelerator pedal 7, the speed of a car and the intensity of acceleration whether the car is running on a downward slope or not. With a steep downward slope, a positive shift-down is carried out independently from a preset automatic speed change pattern. By this procedure, such a braking operation as in the case of running in an ordinary driving mode becomes unnecessary, an extraordinary wear of the brake disc and deterioration of riding feeling can be prevented.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is based on the invention that there is one hull in an automatic vehicle! S/=Electrically controlled automatic transmission device automatic transmission speed 8+lI all j
With regard to method j, in more detail, the shift +-down control method required in the downward temporary lock 11 when the transmission is controlled to change according to the preset shift pattern d) -Rir.

(Prior art) In a conventional automatic transmission using a torque converter, N (2"-1~ral), 1st < 1st gear)
, 2nd (2nd speed), D (drive) [< (reverse)
, and P (barging) are provided, and a desired seven-position can be obtained by operating the shift levers 1 to 1.

Normal driving (j
In this case, the drive (1) mode is selected. In this case, as shown in FIG. 1, the state of the vehicle It! (
Changes in operating point X (for example, x1 → It's like going downhill.

If the vehicle is traveling at a constant speed on a flat road, there is no problem even if the drive (D) mode is maintained. However, Xf! Figure 2 shows small J J, sea urchin, for example flat road R
1 in a certain week i 0 KM, / hr C medium thickness △
When the driver approaches a downhill slope of 1 < 2 during the 11th row, the driver usually reduces the pressure on the accelerator pedal. Release the accelerator pedal and operate engine brake 1 to maintain the engine brake speed at a constant level without increasing it. However, if the slope γ of the 1-slope R2 is steep<T (γ>0), I Fl! Despite the operation of , the speed of f increases and C no 1 is always dangerous. -11<K or drive the transmission (+') from 1st seed to 2nd (2nd speed) -
Do ni shifu 1~ji
However, if the former J<r'l racing operation is performed during such high-speed driving, abnormal wear of the brake plate may occur. 1. In the case of the rear part 1, if the shift door X [I have no problem with the clutching operation for shifting] Resin 101 rotation speed suddenly increases, and the shock during gear shifting causes a deterioration of the feeling during the mold. zu.

-3= (Invented on October 1) J, -) (, The present invention also applies to - when a vehicle equipped with an automatic transmission running in drive (D) mode goes down a steep downhill slope J5. To avoid problems such as these, it is desirable to provide a method for controlling the speed of automatic pulling line equipment [-1 and J].
-ru.

[Structure of defense]

In view of the above-mentioned problems, the present invention has been devised so that even when in the drive mode, when encountering a steep downhill slope as described above, the automatic shift pattern does not follow the preset automatic shift pattern but deviates from it. There is a speed change braking method V1 which is characterized by controlling downshifts independently of the speed change pattern.

In the present invention, instead of actually observing the encounter with a steep downhill slope, the encounter can be interpreted from the following points.
It was decided to. In other words, a) When going down a steep downhill slope, the driver naturally considers AC-4= and (β-0). Saga increases J0 medium speed V is dangerous speed V
. (V≧vo)
J: If so, it is possible that there is a steep F slope (゛.Furthermore, C) the magnitude of the vehicle's acceleration α is related to the slope of the downhill slope γ, so the vehicle's The thickness of the acceleration melon is α.

If it exceeds (α≧α), it is conceivable that there is a steep slope of ten slopes, that is, a steep slope of γ)0.

If all conditions from a) to c) are 11, it is safe to conclude that the vehicle is traveling down a steep downhill slope.

Therefore, in the present invention, when all the child-related states occur, Zunawara β-〇......■ V≧V ......■ α≧α Conflict o1・T1...■ Even when in the drive (D) mode, when all conditions from f1■ to ■ are satisfied (towards 1k on a steep slope)
), regardless of the set shift pattern.
(Independently) It is designed to reduce the speed when downshifting.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, the present invention will be described with reference to embodiments shown in the accompanying drawings.

(Embodiment) Fig. 3 1.1 '+' of a vehicle to which an embodiment of the present invention is applied
FIG. 1 is a block diagram showing the configuration of a 1f f a+'l tll1 type automatic yoke 11 neck mounting.

? Ko'r31 is column -1°! A diesel engine is shown in which the fuel supply tr<if h+ is controlled by the fuel injection pump 2.

? "l' p33 indicates a clutch that engages and disengages between the multi-stage gear X7 type transmission line 4 and the diesel engine 1. The reference numeral 5 indicates the state of operation of these devices. In other words, the fuel injection m to the diesel engine 1 varies from the rotational speed sensor '76 provided in the engine 1 to J.
The information signal (S6) corresponding to the engine rotation speed (N[) and the positional displacement ff1t? Information corresponding to stepping out (positional displacement amount) β from sensor 8'
The electronic device M5 reads j (Sg) and determines the optimum
11 Determine the copper suspension and set the corresponding optimum injection amount command (9
) to the injection pump actuator 17 (output and optimal injection
(There is.

A position sensor 10 is connected to the actuator 9, and the actuator 11-actuator 9 is always controlled by feedback a-control by the electronic device 5 based on the information signal (S1o) from the actuator 41/position sensor 10. , J, is maintained at the optimal position d.

The clutch 3 is equipped with a clutch actuator +1-taper 11 for driving and controlling the operation of the clutch 3, and a 1d lever 12 for detecting the nf1+ and non-operating state of the clutch. ]Formula Yuren line 4 includes shift actuators 14 and 14 for changing the l' tI ratio, and furthermore, these shift actuators 13,14 6t if'/
Position sensors 15 and 16 are provided for detecting the state. Each Akboo 1]-ta'11, 13゜14 is an electronic device ef5 color (') lft order (C11, C
13, C14)-7-, and its driving state is determined by each sensor 12.1.
It is controlled by the electronic device determining the information signal ($12.S15.516) from 5.16.

Vehicle driving mode RY (1st, 2nd, D, N.

In order to select a desired driving mode from R, P), the shift lever 17 is provided with a shift mill lever position sensor 18 for detecting the selected driving mode.

Additionally, a vehicle speed sensor 19 is provided to detect the speed of the vehicle.

Next, the operation of the embodiment method of the present invention will be explained.

First, when the drive (D) mode is selected from the driving mode group, the information signal (
S18) is determined by the electronic system@5 and the operating point Xi of the vehicle is determined according to the continuous automatic shift pattern shown in FIGS. 1 and 4.
Commands (C13, C14) are output to the actuators 13 and 14 to change gears according to changes in .

That is, the information from the medium speed sensor 19 corresponding to the vehicle speed V (+ ;
S19) and the accelerator depression distance β corresponding to the engine t1 direction.
To informatization from HL Lensa 8; (81B) Doni, J.
Electric power k: t'f 5 determines the operating point X of the vehicle 1θi
Rir. For example, if the operating point changes from x1 to x2 due to changes in the vehicle state (V, β), When λ exceeds 11,1, the electronic device 5 determines its state and -C1 Akboo 1■ -ri11°13.1
Driven 4! Automatically downshifts from 5th to 4th gear
Ru. Preventing the shock caused by AT during this automatic speed 11
1J, the engine rotational speed is constantly observed, and the engine rotational speed is controlled by the electronic device 5 so that the difference between the axle side rotational speed and .

. In the above state (drive H))L-drive), as shown in Fig. 2, the vehicle (△) is traveling at a constant speed vl on the flat road (R1).
(e.g. 60 Km/hr), the gradient (γ
) When the driver approaches a steep downhill slope (R2), the driver usually reduces or releases the accelerator pedal to maintain a constant speed (Figure 1 x 1 → x 3) . However, the slope (7
) is steep (γ)0)! The 1i speed increases further, resulting in a situation where a downshift is not performed even though it should be performed. Therefore, in the speed change control method according to the present invention, when it is detected that such a steep slope of 1.
There is also a system in which downshifting is performed independently (in this embodiment, downshifting is performed one step at a time) without following the own IIJ'Lx speed pattern shown in FIG.

The present invention relates to the detection of encounters with downhill slopes of L+ slope/J
In the law, J, sea urchin, (D β・−〇. (= O) ■ V≧v.

■　(χ≧α.

Since all conditions f1 in 1- below are satisfied, it can be determined that b is the case. J, the information signal (S8) from the accelerator pedal position decoy sensor 8 and the vehicle speed 1? The weight device H5 reads the information signal (S +.) from the engine 19, and when the accelerator pedal is depressed, the acceleration stone is activated.
According to the notes) (“F ?/l set lead 1 (quasi-state quantities (β −0, Vo, α, t)) which comparison is step 4
2 to 44 ;L
1G, the selected one is dry/the first one (11i to determine whether there is one!
: All conditions from ■ to ■ are satisfied (if the conditions are met, it is determined that you are descending on a steep downhill slope), and it is automatically determined that you are descending by one step (for example, 5) independently of the white speed pattern. speed → 4th speed)
From shift 1 to down step 46, the process moves through step 45. For these subtubs 41 to 46, the amount of salt the vehicle uses is 11. 1(') is repeated. At this time, it is preferable that the fuel cut command is outputted from the electronic device 5 and the fuel supply to the engine is interrupted.

This ■, 1, for the A-balan protection of the engine, electric-1
1- Compare the engine rotation speed (N, ) and the standard engine rotation speed (N) for the engine rotation number 5, and if are all satisfied (
(Mojino 1 ~ It's about to go down (Sfutsubu 45).

When the accelerator pedal returns to 111 and S+7 river route from Tri-Salt, the accelerator pedal is operated t1, and any one of the fL C1) and ■Mag is not satisfied, and the shift goes to step 47, and the shift control follows the normal automatic shift pattern. Return to

The aforementioned 4ttl+(danger) state 1 (Vo, α., No
) is determined by considering the influence of the phase n depending on the driving condition of the vehicle, for example, whether the vehicle is traveling on an expressway or on a general road. For example, V when driving on the highway. (1 white is set at about 80 KIR/hr, and on general roads it will be set at about 40-50 KIR/hr.

3LI, in the neck configuration described, the addition of the vehicle
I'm all excited about the magnitude of the speed, which is the detected speed v4rrl 1 minute 1J based on the vehicle speed L 19 degrees, but the vehicle speed pink acceleration l! lt? It is also possible to set up [)]2 and [2] separately. Acceleration 1α person's height α is 1・hill slope γ
I avoided dealing with it.

In addition, 1F E1! Applied to the 1st generation 14th generation with a multi-stage 1'' oni speed machine on the right side / = /J of the example
I explained the law, but gasoline 1 engine or i, ll +
Tsuku-up II 41% (; I l-ruku I inverter type) t) Applicable to the speed change intermediate d of the model using this machine 11
1 function (゛1゜〔Song Dynasty゜゜゛゛　　　　　　　　　　　　　　　゛　　゛　　　　　　　　　　　　　　　゛　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　゛
fl + ll construction 11 method C is '7/Clervedal's place i, vehicle speed and acceleration 11 people, \judge whether the vehicle is running], SuJ, and easy-1・
Risaka - (singing) Automatic shift pattern set in advance☆
And make sure to do a shift down.
・Yes, normal drive (1) mode (as in ゛Run 17)%ll racing operation is not required.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a preset automatic shift pattern, and Fig. 2 is a diagram showing a preset automatic shift pattern. Figure 3 is based on i.
A block diagram showing the configuration of a transmission device to which the IJ method is applied in one embodiment of Mitsuaki Ki, and Fig. 3 shows the execution of the embodiment method applied to the IJ method. -1
・It is a diagram. 1...-engine; 4...transmission: 5...electronic device: 6...-engine rotation speed sensor...ac? Rubedal: 8...Accelerator pedal displacement ID sensor; 13...Relec 1 to Actico J-ta; 14...Shift acticoator; 18...Shift 1 to Lever first purchase sensor 4no. Agent Akira Asamura 15-? 1 - size bait '' size (1ftBtr so 11 (, ρA (= 4 (, l) '''1
"Invitation 1<, z<Work 295-

Claims (2)

[Claims] (1) An automatic shift control method for an electronically controlled automatic transmission device having a transmission mounted on a vehicle and adapted to perform gear shifting operations according to a preset automatic shift pattern, comprising: 1) the vehicle; a first step of detecting whether or not the vehicle is running in the automatic shift pattern mode; and ii) when the vehicle is running in the automatic shift pattern mode, the running speed V of the vehicle and the running acceleration of the vehicle are detected. a second step of detecting the magnitude α and the positional displacement amount β of the accelerator pedal; 111) each state quantity (V,
The third step is to compare 11 to determine whether α, and β) satisfy the following conditions with respect to each reference state quantity (Vo, α., and β.) stored in advance in the electronic device. stage, and β−β (−01・ ・ ・ ・ ・(1)V≧v l
Urn 1 l −φ ・ Bone ・(?) α≧α ・ ・
・ ・ ・ ・ ・ ・ ・CDiv) Said article fl
(i) or -') niil J: ('C is full 51')
, isre15-dogi is the above-mentioned Hakusen Yutsuji pattern/+'
"+German S'/l/ (Front-! Controllably downshift the transmission-!, when one of the above-mentioned items A'1 is not satisfied, shift the front Ft! according to the automatic shift pattern) Turn the machine to the 1419th floor of Speed Control Haku J Ruri, and repeat IJ sequentially from 1) to iVl, 1, c nor* F/i.
1 if/i method. (2) In the automatic speed control method described in Section 1 II"1 of the patent claim, +'+7i first stage ('(), the speed is lowered by one stage 'a 1:+' t:
Ii Tozuru Automatic Shift Control/i France.