JPS58146722A - Clutch controller - Google Patents

Abstract

PURPOSE:To smooth engaging operation of a clutch, by starting the engaging operation of a clutch device through an actuator when an engine increases its speed to at least a fixed value and performing the engaging operation of the clutch at a speed in accordance with a rotary speed of the engine. CONSTITUTION:A clutch device 4 provided between an internal-combustion engine 2 and wheel driving gear 3 is urged by a hydraulic cylinder 6 of a hydraulic actuator device 5 through a control lever 4a. This device 5 is constituted such that when a normally closed solenoid valve 10 and normally open solenoid valves 14, 17 are all in a deexcited condition, a pressure receiving chamber 8 of the cylinder 6 generates almost the atmospheric pressure and the device 4 is controlled to an engaged condition by a spring. Each solenoid valve 10, 14, 17 is controlled by a control unit 20, and the unit 20 generates an actuator operational signal responsively to a rotary speed signal S3 while applies the operational signal to each solenoid valve 10, 14, 17 when a rotary speed of the engine becomes at least a prescribed value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch control device, and more particularly, to a clutch control device that automatically connects a clutch.

For example, the clutch engagement operation required when driving an internal combustion engine vehicle causes a great deal of fatigue to the driver. When driving around town, the number of operations increases, and the driver's fatigue also increases accordingly. In order to eliminate these drawbacks, so-called automatic cars are widely used, which use an automatic transmission mechanism using fluid or electromagnetic powder and do not require a clutch. It has the disadvantage of high loss.

This is because the structure is such that the engine output is transmitted to the driven body via fluid or electromagnetic particles, so slipping occurs when a large load is applied to the 1M#IJ wheel. This is the cause of the decline in the furnace cost of the main vehicle. Due to the above-mentioned reasons, it is currently difficult to realize automatic vehicles, especially in large-wheel vehicles such as trucks.

Therefore, in recent years, a clutch control lid has been proposed that automatically connects the clutch by attaching an actuator to a conventional clutch device and controlling the drive side of the actuator. This type of clutch control device that has been proposed in the past cannot smoothly control the so-called half-clutch state when the clutch is engaged, and the feeling when the clutch is engaged is better than when the clutch is engaged manually. The problem is that there is no

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a clutch control device that automatically and reliably performs a clutch engagement operation, particularly a half-clutch operation.

According to the present invention, in a clutch control device for automatically performing a connection operation of a clutch device provided between an internal combustion engine whose rotational speed is controlled by an accelerator operation and a load, the clutch installation is operated. means for outputting a speed signal indicative of a rotational speed related to the speed of the internal combustion engine; and an actuator for engaging the clutch device at an operating speed related to the speed of the internal combustion engine in response to the speed signal. A clutch-controlled snowmaking device is provided, comprising: means for generating an actuator operation signal for performing the operation; and means for applying the actuator operation signal to the actuator when the speed of the engine exceeds a predetermined value.

According to this configuration, pressing the accelerator will cause 8!
When the engine speed reaches a certain level, the actuator starts to connect the clutch, and the clutch is connected at a speed that corresponds to the rotational speed of the engine. Therefore,
When the accelerator is pressed quickly, the rotational speed of the engine rapidly increases, and the actuator connected to the clutch installation completes the clutch installation within a relatively short time, while when the accelerator is pressed down ( Where I stepped into & K &
'! The rotational speed of the accelerator also increases slowly, and the actuator follows the clutch at a slowly reduced operation speed.As a result, the accelerator operation state changes to J.
The clutch engagement operation is performed at the speed of 4 engagement, and in particular, the half-clutch operation can be performed extremely smoothly and reliably, and the feeling when the clutch is engaged is extremely good.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 shows a schematic mechanical diagram of an embodiment in which a clutch control device according to the present invention is applied to an internal feeder wheel. Clutch control device ll uses internal combustion 81!12 and wheel drive to drive the car! A hydraulic actuator is provided for the purpose of automatically connecting the clutch device 4 disposed between the stirrup 3 and the stirrup 3, and is connected to the operating lever 4aK of the clutch device 4.

Equipped with Eta equipment W15. The hydraulic actuator device 1115 includes a hydraulic cylinder 6, and the end of the operating rod 7 of the hydraulic cylinder 6 is pivoted to the operating lever 4aK.

The operating lever 4m is always biased in the direction of arrow A (the direction in which the clutch is connected) by the force of a spring provided in the clutch device 4. Therefore, the operating rod 7 is also always biased in the direction of the arrow A. ing. A hydraulic pipe 11 equipped with a normally closed solenoid valve 10 is disposed between the pressure receiving chamber 8 of the hydraulic cylinder 6 and the hydraulic pressure #I9, and the normally closed solenoid valve 10 is energized and opened. As a result, the hydraulic pressure from the hydraulic pressure 119 is guided to the pressure receiving chamber 8, and the operating rod 7 moves in the direction of arrow B against the spring force. -p- Pressure receiving chamber 8 with increased sweating
The hydraulic cylinder side of 1 solenoid valve lO and the oil tank 1 are connected so that the hydraulic pressure inside can be reduced to the desired pressure.
A passage 13 having a normally open solenoid valve 14 is provided between the pressure receiving chamber 8 and the oil tank 12, and a communication passage 13 having an orifice 15 and a normally open solenoid valve 17 is provided between the pressure receiving chamber 8 and the oil tank 12.
6 is provided. In addition, the passage indicated by the symbol 18 is
This is a passage for keeping the pressure in the chamber 19 of the hydraulic cylinder 6 at atmospheric pressure at all times and removing back pressure.

Therefore, when all the solenoid valves 10, 14, and 17 are in the deenergized state 11, the pressure in the pressure receiving chamber 8 becomes approximately equal to atmospheric pressure, the operating rod 7 moves as much as V to the left, and the clutch device 3 is in a connected state.

Here, when all the solenoid valves to, 14 and 15 are energized, the solenoid valve 10 opens and the hydraulic pressure source 9 and the pressure receiving chamber 8 are connected to the hydraulic pipe 1.
1 and the solenoid valves 14 and 15 are closed, so
The pressure inside the pressure receiving chamber 8 increases, the operating rod 7 moves in the direction of arrow B, and the clutch device #3 becomes disconnected. This situation 11
When the solenoid valve 10 is closed and the solenoid valve 14 is opened, the pressure in the pressure receiving chamber 8 escapes through the first path 13 and decreases at a relatively high speed, and the operating rod moves relatively quickly in response to this pressure decrease. The clutch device 3 can be moved at a high speed in the direction of arrow A, and the clutch device 3 can be connected at a high operating speed. If solenoid valve 14
When the solenoid valve 17 is opened instead of 0, the received pressure is 1j due to the orifice 15! 8 becomes slow, and the clutch device 3 can be connected at a slow operating speed. As can be seen from the above description, if the solenoid valves 14 and 17 are opened simultaneously, the clutch device can be connected at the fastest speed. Furthermore, by periodically opening and closing each 1111 magnetic valve using a pulse signal and adjusting the duty ratio of the pulse signal, in addition to the above-mentioned three stages of clutch operation speed,
Clutch power connection can be performed at the operating speed of a child.

Each magnetic valve rO, t4.17 excitation coil 101°14g
, 17a are connected to the control unit) 20, which receives a brake signal S1 indicating the operating state of the brake, and a medium speed signal S! indicating the speed of the vehicle. , all indicating the rotation speed of Iso 1
A start signal 16 S, which is at a high level when starting the vehicle, is inputted as a speed change signal S1, and a position signal 8s for changing the position of the operating rod 7 is inputted from the position sensor 21.

From the control unit) 20, based on these input signals,
Each electromagnetic valve to, 14 .
A drive signal for controlling the opening and closing of 17 is output.

In the illustrated embodiment, the control unit 20 is configured using a microcombiner, and the connection operation of the clutch device 3 by the hydraulic actuator device f5 is performed by the microcombiner based on the above-mentioned input information. It is controlled by Eta.

In FIG. 2, a clutch control unit 20 is shown. tIa
When the power is turned on at time 0:=t, when the flowchart showing the connection control operation at time t is blanked, the solenoid valves 10, 14, and 17 are energized, and the operating rod 7 moves in the direction of arrow B. However, when the operating door reaches the rightmost movement position (1=1 m), the solenoid valve 10 is deenergized and becomes closed.

In FIG. 3, the position of the operating rod 7 [L is taken as the vertical axis and time t is taken as the horizontal axis, and temporal changes in the position of the imitation rod 7 are shown. Here, the value of L when the operating rod 7 is in the left-hand direction is set to O, and the value of L when the operating rod 7 reaches the rightmost movement position is indicated by Lmax. The zone between 111- of L and La and Lb is the middle clutch zone.

In this way, 1=1. The clutch device, which was in the connected state mK at t=t, becomes completely disconnected at t=t, and the preparation for starting the vehicle is completed, and the start signal S
Wait until the level of 4 becomes rHJ (step 31
), when the level of the start signal 84 reaches [IJ], both the solenoid valves 14 and 17 are deenergized and opened (step 32), and the operating rod 7 is moved in the direction that connects the clutch installation at the fastest speed (L is small). direction) move K. The value of L is indicated by the position signal S, and HI is determined whether the value of L has reached @LcK, which is just before the above-mentioned half-clutch zone (step 33). If L≦Lc, then In step 34, it is determined whether or not the engine rotational speed N has reached a predetermined rotational speed Nal that is sufficient to start engaging the clutch. [Na can be obtained from the signal S, and the chain of Na can be determined as appropriate in consideration of engine performance and other factors. If N (Na), the solenoid valve 14.17 is closed and the position of the operating rod 7 is Lc.
K is held (step 35).

When N≧Na is established by depressing the accelerator, a drive signal is output to drive the hydraulic actuator mounting 4 so that the clutch mounting is connected at an operating speed proportional to the engine speed (step 36). The signal includes a signal for selecting a combination of open and closed states of each solenoid valve 14, 17, and in this case, there are at least three operating speeds, that is, the moving speed of the operating rod 7 in the direction of arrow A, tllll.
J# In addition to the solenoid valve 14 and or! The operation speed can be continuously changed by periodically opening and closing 7 by pulse driving and changing the Dx'D ratio of the pulse. In this way, the clutch device is connected at a speed that corresponds to the engine speed, so when the clutch is in the half clutch zone and when the accelerator is slowly depressed, the rotational speed of the engine is Since a and h are rising, the operating speed of the clutch is slow, and on the other hand, if you press the accelerator quickly, f! At rK, the rotational speed of the engine increases rapidly, so the operating speed of the clutch increases. In this way, since the clutch engagement speed changes depending on the accelerator pedal depression A and I, the accelerator operation amount KW1 matches. You can carry out the ** march.

In the half-clutch state 11, by releasing the accelerator or by suddenly increasing the load, 41! In order to prevent further engagement of the clutch and stopping the engine when the leap speed approaches the engine stall limit, is the ffl related speed N smaller than a predetermined engine stall limit rotational speed Nb? is determined (step 37).
), if N < Nb, the solenoid valve to, 14.
t'y is energized, the position of the operating rod 7 is temporarily returned to Lc (sub 38), and then step 34
Return to In this way, during the connection operation of one clutch, the
Since this @ warehouse is monitored and the operation RO 2 door 0 position # is returned to Lc K at the time of N (Nb), it is reliably prevented from causing an engine stall in the cow warehouse training.

In the case of N≧Nb, it is determined whether the change in vehicle speed, that is, the IJjl speed is equal to or higher than the current speed (step 39),
If the acceleration is below the predetermined value, the vehicle speed and
Calculate the slip ratio by considering the gear ratio from l speed (
Step 40). In addition, if the acceleration is more than 5 seconds,
In step 41), the solenoid valve 1o is turned ON only for a certain period of time, and the operating rod 7 is returned a little in the direction of arrow B. Then, the process proceeds to step 40.

For this reason, it is possible to reliably prevent the sudden change in vehicle speed and poor riding comfort, and it is possible to maintain a comfortable riding comfort at all times when starting. Judgment step 42), slip is not zero m
If the clutch is not fully engaged, the process returns to step 36 and the clutch engagement operation described above is repeated. If the awarded slip is zero, both the solenoid valves 14 and 17 are set to the Krja state, and the operating rod 7 is sent in the direction of the arrow at the fastest operating speed (step 43). The position of L-=
Step 44), [
,=Q, the clutch device connection operation is completed.

3 shows an example of control when the clutch is fully engaged after entering the half-clutch zone at t=t,g. t, thereafter, the operating rod 7 moves in the direction of arrow A at a speed corresponding to the H& speed, or if for some reason it becomes N (Nb) at t4 (step 3
7) The operating rod 7 moves in the direction of arrow B, once leaving the half-clutch zone and returning to the point where L=Lc (step 38).

Here, time 1 when L=Lc. At step 34, it is again determined whether N is greater than Na (step 34), and if N is Na, the clutch connection operation is performed again and the clutch is in the half-clutch zone.

When the clutch operation speed increases at 1=l, and the acceleration of the vehicle speed becomes greater than a predetermined amount, the operated lower door is slightly returned in the direction of arrow B by a predetermined amount (step 39.41).
After that, it is sent again in the direction indicated by the arrow. In this way, when the half-clutch zone is pulled out at tv and the slip becomes zero, the solenoid valve 14.17 is opened (step 42.43), and the operating rod 7 is sent in the direction of the arrow APj at the fastest operating speed. and by the output from the position detector 21 [
, = 0 is detected, the clutch M i+
The connection of 'i' ends (t==ta).

2nd FI! Each judgment item shown in JK needs to be judged at a certain short repetition period, but considering the response speed of each solenoid valve, it is considered appropriate to carry out the judgment every approximately 50 (m sec). Further, the brake signal S obtained by the brake operation is used as an interrupt signal to the CPU K in the control unit 20, and the clutch connection operation is stopped and the clutch is disengaged in response to the brake signal S and O input. K is set to perform the work. In addition, as already mentioned, in this device, the clutch is not engaged unless the start signal S4 is input, so even if the key switch is turned on and the engine is revved up unconsciously, there is a risk of sudden start. does not occur.

In the above, the operation speed of the actuator was changed according to the rotational speed of the engine (Fig. 2, step 36), but this operation was performed by changing the actuator speed pre-added to the engine speed. Store data in ROM K memory in advance, and store data (KF) indicating the engine speed and data (KF) indicating the actuator speed. can be executed exclusively by reading out from the ROM and controlling the opening and closing of the solenoid valves 14 and 17 according to the output from the aOM.

In the above embodiment, the present invention was applied to the starting lock of an internal combustion engine vehicle. However, the present invention is not limited to the above embodiment, and the present invention is not limited to the above embodiment, and the present invention is not limited to the above embodiment. It can be applied in the same way to

According to the present invention, as described above, since the control system is such that the clutch engagement operation speed is controlled according to the rotational speed of the engine, the clutch engagement operation is performed in response to the degree of depression of the accelerator pedal. Therefore, the engine hardly stops when the clutch is engaged, and the feeling of clutch engagement is significantly improved compared to the conventional method.

[Brief explanation of the drawing]

Figure IIE1 is a schematic structural diagram showing one embodiment of the present invention;
5el is a flowchart showing the control program of the control unit shown in FIG. m1, and FIG. 3 is an operation explanatory diagram for explaining the clutch engagement operation according to the control program shown in FIG. 1...Clutch control device, 2...Internal combustion engine, 3...
・Wheel drive device, 4...Clutch locking device, 5...Hydraulic actuator device, 6...Hydraulic cylinder, 9...
Hydraulic source, 10... Normally closed solenoid valve, 14, 17... Normally closed solenoid valve, 15-... Orifice 1.20... Control unit. Patent Applicant: Diesel Kikai Co., Ltd. Agent Patent Attorney: Akira Takano Shun No. 3 Continuing Amendment (Voluntary) April 28, 1980 Commissioner of the Japan Patent Office Shima 1) Spring * Tono 1, Case Indication Patent Application 1982 -027446 No. 2, Name of invention Clutch control! l11 3. Relationship with the case of the person making the amendment Patent applicant address: 3-6-7 Shibuya, Shibuya-ku, Tokyo Mei Hayashi (333) Diesel II & Ki Co., Ltd. Representative: Mochizuki-Sei 4, Agent: Address: 105 Address: 2nd floor, Tomowa Building, 3-4-16 Shiba, Minato-ku, Higashiba Miyako-ku, Japan. (2) Specification I [On page 6, line 16, “Solenoid valves 10, 14
゜! 5" should be corrected to "Solenoid valve to, 14, 17JK.
J is replaced with "Solenoid valves 14, 17 JK are repaired. (4) K "3 is" in the first line of No. 7 of the specification is replaced with "4.
” I corrected myself. (5) Specification No. 7, line 6 K “3 meeting J toaruno 1 “4
t”. (6) Correct the number K "clutch device 3" in the ninth line of No. 7 of the specification to "clutch device 4." (7) The words "clutch device 3" on page 8, line 8 and line 13 of the fIi4 specification are amended as "clutch device 4."(that's all)

Claims (1)

[Claims] 1. The rotation speed is controlled by accelerator operation! l12! A clutch control device for automatically performing a connection operation of a clutch device provided between an Isoko and a load, comprising an actuator for operating the clutch device and a rotation speed related to the speed of the internal combustion engine. means for outputting a speed signal indicating a speed of the internal combustion engine; means for generating an actuator operation signal for connecting the clutch device at an operation speed related to the speed of the internal combustion engine in response to the speed signal; A clutch control device comprising means for applying the actuator operation signal to the actuator when the actuator operation signal exceeds a predetermined value.