JPH01142226A - Throttle opening control device - Google Patents

Abstract

PURPOSE:To improve the reliability of the operation by stopping the control of a control circuit or continuing the calculation required for the traction control depending on the comparison results between the detection value and the preset value of the throttle opening when an abnormal spin occurs. CONSTITUTION:A throttle opening adjusting device A provided on the route of an accelerator wire path is constituted of a ring mechanism 24 consisting of three ring members, a motor lever 31 and a drive motor 25. The motor 25 is controlled by a traction control circuit 1 based on the outputs of a motor lever position detector 5, a throttle position detector 6 and wheel speed sensors S1-S4 to perform the traction control. When an abnormal spin state occurs, the control of the control circuit 1 is stopped if the detection value of the throttle opening is the preset value or above. On the other hand, when the detection value is the preset value or below, the motor lever position is compared with the second preset value, and if it is smaller than the second preset value, the traction control is continued.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides traction control by adjusting the throttle opening through a throttle opening adjustment device installed in the path of an accelerator wire between the throttle and accelerator pedal of an automobile engine. The present invention relates to a throttle opening control device.

[Conventional technology]

In recent years, traction control systems have been introduced as electronic control systems for vehicles.
BACKGROUND ART Various systems that contribute to the stability and safety of vehicle running conditions, such as B systems, anti-lock brake systems, and four-wheel steering systems, are being developed one after another. This is largely due to the remarkable development of electronic control technology in recent years.

A traction control system is a system that ensures running stability and handling stability and improves vehicle body acceleration when a vehicle starts or is running. In other words, if excessive spin occurs in the drive wheels due to excessive depression of the accelerator pedal by the driver, the vehicle stability and steering performance will be impaired, and the starting acceleration will be reduced. Based on the information, the electronic control unit controls the wheel speed and wheel acceleration2. The purpose is achieved by calculating the estimated vehicle speed, estimated vehicle acceleration, etc., detecting the occurrence of excessive spin of the driving wheels, and suppressing and controlling the driving force generated in the driving wheels to suppress the excessive spin.

In this case, there are two methods for suppressing excessive drive wheel torque. One method is to suppress the engine output, and the other is to apply brakes to the spinning wheels independently of the driver's operation. As a specific example of the former method, there is a method in which a throttle opening adjustment device is provided in the middle of the path of an accelerator wire connecting an accelerator pedal and an engine throttle to suppress the opening of the engine throttle.

A traction control system employing the former of the above two methods is known from Japanese Patent Laid-Open No. 59-79050. The traction control system according to this publication is very basic in principle, with two pulleys placed in the middle of the accelerator wire, and the negative pulley being installed so that the path length of the accelerator wire can be expanded and contracted via a gear mechanism. The throttle opening is configured to be adjusted based on a command from a control device.

[Problem that the invention seeks to solve]

By the way, when such a traction control system is installed, even if a mechanical failure or an electrical failure occurs in the system, the failure may cause the vehicle to not run as intended by the driver or to be unable to drive normally. The occurrence of situations that may cause problems must be prevented.
For boat fishing, a throttle opening adjustment device installed in the middle of the accelerator wire route is designed with failsafe in mind.
All you have to do is return it to its original state without this feature.

However, conventional devices do not have a design that takes this fail-safe into account, and even if fail-safe considerations are taken into consideration, a clutch means or the like is installed between the drive device and the pulley for adjusting the accelerator wire path length. If the clutch means is provided so that the drive device can be shut off when the failure occurs, it is possible to realize the same situation as not providing the throttle opening adjustment device. However, if the clutch means itself fails, the accelerator wire cannot be moved and the throttle cannot be opened.

If a mechanical or electrical failure occurs in any of these traction control systems, the inability to open or close the throttle will result in a loss of confidence in the product, and if the cause of the failure occurs while driving, There is a concern that the throttle cannot be opened or closed, making it impossible to drive.

In such cases, a fail-safe mechanism should be installed in the traction control system to ensure that the throttle opening will provide the minimum necessary thrust to start the vehicle even if a mechanical or electrical failure occurs. It is necessary to notify the driver of the occurrence of such a failure as a warning signal.

This invention was made in view of the current state of the art of conventional traction control systems, and its purpose is to maintain the performance of the vehicle even if a mechanical or electrical failure occurs in the drive section of the throttle opening adjustment device. The throttle opening is traction controlled through a throttle opening adjustment device that is equipped with a mechanism that can guarantee the throttle opening necessary to provide the minimum thrust necessary for starting, and the failure occurred as described above. To provide a throttle opening control device that detects the situation and notifies the driver.

[Means for solving problems]

Therefore, as a means for solving the above-mentioned problems, the present invention provides a spring rotating part that is provided in the middle of the accelerator wire path between the engine throttle and the accelerator pedal and has a ring mechanism consisting of three ring members and a motor lever, and a spring rotating part that has a motor lever. a motor lever position detector that is attached to the motor lever drive section and detects the rotation angle of the motor lever in order to adjust the throttle opening degree and perform traction control via a throttle opening degree adjustment device equipped with a drive section; A throttle position detector attached to the rotating shaft of the engine throttle, a wheel speed sensor attached to the wheel axle, and data necessary for Traxyrun control are calculated based on input signals from the two detectors and the wheel speed sensor. and a traction control circuit that outputs a command signal to the drive section of the motor lever, which is an actuator, and the control circuit performs the adjustment by outputting an opening/closing command according to the spin behavior of the drive wheel in the normal state as a result of the above calculation. The motor lever phase angle of the device is controlled, and when an abnormal spin condition occurs in which spin continues for a predetermined period of time or longer and a throttle close command is output, the signal from the throttle position detector is compared with the set throttle opening. , if the throttle opening is larger than the set throttle opening, the control of the control circuit is stopped;
If it is smaller, the signal from the motor lever position detector is compared with the second set throttle opening, and if it is larger than the second set throttle opening, the control of the control circuit is stopped, and if it is smaller, the above calculation is continued. The structure was adopted.

[Effect]

The wheel speed signal from the wheel speed sensor is input to the traction control circuit, and based on this signal, wheel speed, wheel acceleration, average spin speed, control variable, darkness value, etc. are calculated. For example, in a front-wheel drive vehicle, the average spin speed is determined as the difference between the average speed of the front two driving wheels and the average speed of the two rear non-driving wheels.
The control variable is determined as the sum of its average spin speed and its differential value, and the darkness value is determined as a function value of the vehicle speed or non-driven wheel speed.

The traction control circuit is simultaneously supplied with a signal representing the throttle position from the throttle position detector and a signal representing the position of the motor lever from the motor lever position detector.

Based on the above calculation results, when excessive spin occurs or a sign of occurrence is detected, traction control is started and a command is issued to direct the throttle opening to close, or when excessive spin decreases or shows signs of decreasing, to command the throttle opening to open. is applied to the motor lever drive unit, and the motor lever is moved to an angular position based on the command signal to control the throttle opening. The throttle opening is opened or closed by transmitting the amount of depression from the accelerator pedal to the throttle via a throttle opening adjustment device installed in the middle of the accelerator wire. The motor lever is moved by the command signal, and the adjustment is made so that the throttle is moved in the closing direction even when the accelerator is depressed.

In the normal traction control described above, when wheel spin becomes excessive, it is possible to set the time for the motor lever to move through a predetermined maximum angle from the fully open position to the fully closed position within a predetermined time, for example, within 1 second. can. That is, if excessive spin occurs and a command to move the motor lever in the throttle closing direction continues for at least one second as a result of calculating the wheel behavior, the motor lever is located at a position equivalent to the fully closed throttle. Generally, if the throttle opening is in the fully closed position, any spin during traction control will converge within a few seconds, for example, 3 seconds, and the command to move the motor lever will be reversed to the opening direction. In other words, if the spin does not converge for more than 4 seconds, which is the sum of this predetermined time of 1 second and the above 3 seconds, and the motor lever close command continues to be output, a failure has occurred in one of the systems, or It is believed that the throttle opening guarantee mechanism of the adjustment device is operating.

Therefore, if spin exceeding the dark value occurs for a predetermined period of time, for example, 4 seconds or more, even though the motor lever close command is output based on the calculation result, the throttle position signal is When compared with the throttle opening setting of the adjustment device, if the throttle position signal is large, it is determined that there is a failure, and the output to the drive unit of the throttle opening adjustment device is cut off to stop traction control. The set throttle opening can be, for example, the A throttle opening, because the adjustment device is configured to guarantee the set throttle opening at a minimum in the event of a failure to ensure the start of the vehicle. be.

If the throttle position signal is small, the motor lever position signal is further compared with a second set throttle opening degree. This second set throttle opening is a fully closed position or an appropriate opening smaller than the first throttle opening. As a result of the comparison, if the motor lever position signal is large, it is determined that there is a failure, and control of the drive unit is also stopped. If it is, it cannot be determined whether there is a failure or whether the adjustment device is in the fully closed position due to the action of the set throttle opening guarantee mechanism, so the process returns to the beginning of the judgment loop and continues the judgment.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The traction control circuit 1 shown in FIG. 1 receives input signals from the wheel speed sensors 31, St, Ss, and Sa attached to the rotating shafts of the wheels via the interface 2.
Based on this information, the wheel speed of the driving wheels and non-driving wheels,
A central processing unit (hereinafter referred to as c) calculates wheel acceleration, drive wheel spin speed, etc., and issues command signals to the motor drive circuit 4.
(abbreviated as pu)).

Based on the calculation result, the CPU 3 provides a command signal to a drive motor 25 of a throttle opening adjustment device A, which will be described later, via a motor drive circuit 4 to control the rotational position of a motor lever 31 rotated via a reduction gear. . As shown in the figure, the throttle opening adjustment device A connects an accelerator wire (point w) that connects the accelerator pedal B of the automobile and the throttle C of the engine.
A) The amount of depression of the accelerator pedal is transmitted to the throttle via a ring mechanism 24 that is provided in the middle of the route and consists of three ring members.

The drive motor 25 of the adjustment device A includes a motor lever 31.
A motor lever position detector (for example, a potentiometer) 5 is provided to detect the rotational position of the throttle, and a throttle position detector (for example, a potentiometer) 5 is provided on the rotation shaft of the throttle to detect the throttle opening.
For example, a potentiometer) 6 is provided. Said 2
The position signals of the two detectors are sent to the CPU 3 via A/D converters provided in the traction control circuit 1, respectively.

In addition to the above, the traction control circuit 1 also has a self-diagnosis function that uses a fault code memory 9 that stores the fault in the form of a fault code when a fault occurs in the control circuit itself including the CPU 3, and It has a circuit that lights up a warning lamp 11 via a warning lamp drive circuit 10 in response to a signal when a mechanical failure occurs.

The operation of the above-described embodiment configured as above will be explained.

As shown in FIG. 2, in 2-1, input signals are read by the CPU 3 every predetermined control cycle. S1, St and wheel speed signals S, , S of the non-driving wheels (rear wheels).

is input through the interface 2 after being waveform-shaped and converted into a binary signal. At the same time, throttle position detector 6
The throttle potentiometer signal from the motor lever position detector 5 and the motor lever potentiometer signal from the motor lever position detector 5 are converted into digital values by the ^/D converter 8.7 and inputted as P, , Pi, respectively.

Next, in 2-2, the program in the CPUG calculates numerical values representing wheel behavior such as the wheel speeds and accelerations of the driving wheels and non-driving wheels, and the average spin speed ASPIN of the driving wheels. The average spin speed is determined, for example, by the following equation (for front-wheel drive vehicles).

Wheel speed (front wheel platform): V.

Wheel speed (front wheel force): Vt Wheel speed (rear wheel platform): V.

Wheel speed (rear wheel left): v4 Average spin speed ^5PIN-(V, +Vt)/2-
(V3 +V,,)/2 Furthermore, the control variable FtlNC,
Threshold value TIIR is calculated by the following equation.

FUNC=＾5PIN +−＾5PINt THR= 3 +(Vs+L) /16 Above control variable F
[lNC is expressed as a function of the sum of the average spin speed and its differential value.

The dark value Tl (R is expressed as a function using the average value of the non-driving wheel speeds Vs and Va in order to be set larger as the vehicle speed increases.

Thereafter, in step 2-3, a motor drive command is calculated. This calculating section calculates the motor lever position based on the result of the calculation regarding the wheel behavior, and outputs that value and the motor lever potentiometer signal P. This is a part that calculates and outputs an opening/closing command to the motor lever 31 by comparing the two.

Next, based on the above calculation results, 2-4.2-5.2-6
In this case, a timer t is used to detect an abnormal spin state.
Then, in step 2-7, it is determined whether or not there is an "abnormal spin state." In this case, the "abnormal spin state" is defined as a state in which, for example, FUNC>THR continues for 4 seconds or more. That is, this is a state where excessive spin occurs and the command to move the motor lever 31 toward the throttle closing side continues for 4 seconds or more. As long as the traction control circuit is operating normally and there is no abnormality in the throttle opening adjustment device or other controlled parts, this control device will generally operate so that even if excessive spin occurs, it will settle within 4 seconds. do. Therefore, the value of "4 seconds" may be appropriately set according to the opening/closing speed of the motor lever 31 and the characteristics of the vehicle.

FUNC2: Not THR or FtlNC≧T
Even in HR, if the duration t is less than 4 seconds, the control device determines that there is no abnormal spin state and performs normal traction control. Even if the motor lever 3
1 (see Fig. 3).

Comparing FIINC and THR in 2-4, FUNC
If not ≧THR, reset timer t in 2-6 (t=o)L, if FUNC≧TIIR, 2-5
Δt is added to the timer t for calculating the wIVt time in the state of FUNC≧THR. Δ[ is the control cycle time. Then, in 2-7, the timer t is activated to determine whether or not there is an abnormal spin state.
and 4 are compared, and if t≧4 seconds, that is, in an abnormal state, proceed to 2-8, and if t>4, proceed to 2-11.

Next, if FUNC≧TIIR and t≧4 seconds (see Figure 4), it is determined that there is an abnormal spin condition a1, and 2-8.2-
In step 9, it is determined whether the cause of the abnormal spin state is due to a mechanical or electrical failure of the system or to the operation of the throttle opening guarantee mechanism of the adjustment device.

Therefore, throttle C and motor lever 3 are controlled by signals from the throttle position detector and motor lever position detector.
The details of the failure are determined based on the operating position of No. 1, and if a failure is determined, a relay is activated to stop traction control by the throttle opening adjustment device. This determination of the nature of the failure is performed as follows.

First, in step 2-8, the throttle potentiometer signal PT indicating the throttle position is compared with the A throttle opening degree, and if it is larger, it is determined that there is a failure. This is based on the assumption that the abnormal spin state has been determined, so the throttle C must be in the fully closed state (the motor lever should have been closed to the position equivalent to the fully closed throttle, but the throttle opening is not This is because if it is more than A, it is considered that a mechanical failure has occurred.The reason for comparing it with 2 throttle openings is due to the mechanism of the throttle opening adjustment device.In other words, this adjustment device If the accelerator pedal B is pressed excessively during control, under normal conditions the motor lever 31 is controlled to a position according to the spin behavior to control the throttle opening, but in an abnormal condition, for example, the motor lever 31 is at the fully closed throttle position. Even if the throttle C is stuck and is in a position where the throttle C cannot be opened, it is equipped with a mechanism that guarantees two throttle openings to at least allow the vehicle to start.

Therefore, even if there is a failure, there is a possibility that at least throttle C will be at the minimum throttle opening of A. Note that the throttle opening adjustment device and its ×throttle opening guarantee mechanism will be explained in detail later.

When it is determined that the above failure occurs, the FLA
Set G=1. This FLAG represents a system failure detection flag, and as shown in FIG. 2, the condition is that FLAG=O when starting the vehicle by turning on the ignition, that is, starting the system.

If pt is smaller than A throttle opening, add 2-9
, the morph potentiometer signals P and l indicating the motor lever position are compared with the throttle fully closed position, and if PH is large, it is determined that there is a failure. Similarly to the above, since the motor lever 31 should be in the fully closed position, a large PM means that the motor lever 31 is stuck in the middle and does not move to the fully closed position. Therefore, in this case as well, FLAG=1 is similarly set as a failure.

Also, when the PM is in the throttle fully closed position (there cannot be an angle smaller than the fully closed position), there is a mechanical failure or the above guarantee mechanism is activated because it is equipped with the above-mentioned x throttle opening guarantee mechanism. Therefore, it cannot be determined whether the throttle is in the fully closed position or not.
cannot be set and proceeds to 2-11. At 2-11, traction control is stopped due to the system failure detection flag.
In order to decide whether to proceed, it is determined whether FLAG = 1 or not, and when FLAG = 1, the motor drive circuit of the motor lever 31 is cut off by the relay drive circuit in 2-12, and the warning lamp drive circuit is activated. The awning lamp 11 is turned on to give a warning. Further, when FLAG≠1, the system is normal and traction control is continued at 2-13.

In addition, "fully closed", which is set as the dark value of P and l when determining a failure based on the definition of "abnormal spin pattern S" mentioned above, is
For example, it may be the A throttle opening. In the above embodiment, abnormal spin is defined on the premise that the commanded position of the motor lever 31 moves from fully open to fully closed within 4 seconds, and "fully closed" is set for this, but for example, the definition of abnormal spin motor lever 3 for excessive spin for more than 1 second.
This is because the condition that the command position of the motor lever 31 moves from fully open to the A throttle opening in this one second is only required to be guaranteed at the minimum. , this dark value needs to be set smaller than the A throttle opening).

Next, a throttle opening adjustment device controlled by the control circuit of the embodiment described above will be explained.

The throttle opening adjustment device A shown in FIG. 5 is provided between the accelerator pedal B of the automobile and the throttle C of the engine as shown in FIG.
They are connected via t.

This adjustment device A consists of a drive section 22 and a spring rotation section 23. The drive section 22 outputs the output of the motor 25 to the spring rotating section 23 via a reduction gear 26 and a power source 27 . Reducer 26
A spring rotating portion 23 is attached to the output shaft 28 of the spring, and is prevented from being removed with a nut 29.

As shown in FIGS. 6 to 8, the spring rotating section 23 includes a motor lever 31 fixed to the output shaft 28 through a spline 30 provided thereon, and a motor lever 31 that rotates with respect to the output shaft 28. The ring mechanism 24 includes three ring members, an accelerator ring 32, a motor ring 33, and a throttle ring 34, which are movably fitted. The above three ring members are each attached to the output shaft 28 via a bearing 35, and an elastic means 36 (a coil spring in this embodiment) is provided between the accelerator ring 32 and the motor ring 33.
One end of the zero elastic means 36 provided with this is fixed to the accelerator ring 32 and the other end to the motor ring 33.

The motor lever 31 is formed as a lever with an L-shaped cross section, and its base is fitted into the spline 30. The accelerator ring 32 has claws 32a, 32b, and 32C, and the elastic means 36 engages with the claws 32b. Furthermore, a guide 32d for engaging the accelerator wire 21a is attached to the back side thereof. 3211 is a mounting hole for the accelerator wire 21a. The motor ring 33 has a concave shape in the center, and has claws 33a, 33b, 33C133d.
The other end of the elastic means 36 is engaged with the claw 33b. As can be seen from FIG. 6, the pawl 33d is formed so that the pawl 32C of the accelerator ring 32 and the motor lever 31 rotate and come into contact with each other. throttle ring 3
4 also has a concave shape in the center and has a claw 34a on the outer periphery. The pawl 34a is in contact with a pawl 33a of the motor ring 33, and the pawl 32a of the accelerator ring 32 is formed so as to rotate and come into contact with it. 34b is a mounting hole for the accelerator wire 21.

The elastic means 36 is set so that a force is applied in the direction in which the accelerator ring pawl 32C and the motor ring 33 are pushed together, and the throttle ring 34 is pulled in the opposite direction as shown by the arrow by the throttle return spring. 7, the claws 34a and 33a are pressed against each other by a force equivalent to the return spring force of the throttle, as shown in FIG. Claw 32a and Claw 34a
is normal (the motor lever 31 is connected to the motor ring claw 33d)
If the accelerator ring is rotated by the set opening degree in the throttle opening direction with the motor lever 31 pushing and restraining the claw 33d of the motor ring, the motor lever 31 will come into contact. Further, when the accelerator ring is rotated in the above direction, the throttle ring rotates together with the accelerator ring.

This adjusting device configured as described above operates as follows.

FIG. 9 is a diagram showing the respective angular positions of the claws of the three ring members in the order of operation when the spring rotating portion 23 is operated.

(a) shows the initial setting position of each claw position in the non-operating state. 0 is the origin when each ring is set at this position. Fully open, 20° open, and fully open indicate the positional relationship when the opening/closing position of the throttle corresponds to this spring rotating portion 23.

Motor lever 31・・・・・・・・・・・・θ″Accelerator ring 32・・・・・・・・・O@Motor ring 33・
・・・・・・・・・・・・0＠throttle ring 34...
...0'' (bl indicates the operation when the accelerator pedal is depressed to the fully open position of the throttle in the case of no traction control. Since traction control is not performed, the entire spring rotating part 23 is not inserted. Similarly, the entire spring rotating portion 23 rotates from the fully closed position of the throttle to the fully open position (set to 84'' in this example) in accordance with the amount of depression of the accelerator pedal, thereby fully opening the throttle.

Motor lever 31...... θ'' Accelerator ring 32...84'' Motor ring 33
・・・・・・・・・・・・84゜Throttle ring 34
...84''(C') is a diagram showing the process when traction control is started.As mentioned above, the traction control circuit controls the wheel speed based on the pulse information detected by the wheel speed sensor. It consists of an electronic control circuit that calculates speed, wheel acceleration, estimated wheel speed, etc., determines the spin state of the wheels, and provides a signal for traction control to the drive section 22.When the traction control signal is given to the drive section 22, ,
The motor lever is rotated depending on the magnitude of the signal.

Now, if some condition causes the motor lever 31 to move to the maximum angle position (in this example, 92 degrees, the throttle fully open angle is 846 degrees).
Assume that a command is given with a margin of 8° for At this time, the state where the accelerator is not pressed is (C'
), and the motor lever is in the state of the motor ring pawl 33.
It is in contact with d.

Motor lever 31...92'' Accelerator ring 32...0'' Motor ring 3
3・・・・・・・・・・・・0゜Throttle ring 34
...0'' (C1 indicates the state in which the accelerator is depressed at 64 degrees during traction control. Therefore, the accelerator is depressed to a position 20'' before the throttle is fully opened, and the claw 32a of the accelerator ring The throttle ring 34 is in contact with the pawl 34a of the throttle ring 34, while the mole lever remains in contact with the motor ring pawl 33d.At this time, since the pawl 34a of the throttle ring 34 is still at its origin, the throttle remains fully open.

The accelerator ring 32 rotates while pulling the motor ring 33 with the elastic means 36, but since the rotation of the motor ring 33 is stopped by the motor lever 31, the elastic means 36 stretches and the accelerator ring 32 is rotated at the above-mentioned predetermined angle. Rotate to position. As will be explained later, the predetermined angular position of the throttle 20'' open position is such that the vehicle can at least start even if a failure occurs in any of the throttle opening adjustment devices. This is the setting angle to guarantee (approximately A throttle opening degree).The setting throttle opening degree is (al
This angle is caused by the initial setting angle of 646 between the throttle ring pawl 34a and the accelerator ring pawl 32a. Therefore, by changing this initial setting angle, the above-mentioned predetermined angular position can be changed arbitrarily.

Motor lever 31・・・・・・・・・・・・92゜Accelerator ring 32・・・・・・・・・64″ Motor ring 33・・・・・・・・・・・・0゜Throttle ring 3
4...00 Next, at Tdl, the accelerator is further depressed and the throttle is depressed to the maximum angle.At this time, the motor ring 33 is prevented from rotating by the motor lever, but the accelerator ring is held by its claw. Push the claw 34a of the throttle ring at 32a and rotate the remaining 20@. Therefore, the throttle is opened at 20 degrees. Therefore, even if some kind of failure occurs in this throttle opening adjustment device and, for example, the motor lever 31 becomes stuck at the maximum angle position and does not move, as long as the ring mechanism 24 of the spring rotation part 23 can rotate, the accelerator pedal can be moved to the maximum angle. Minimum 2 if you step into it
Since a throttle opening of 0° can be obtained, the vehicle can be started safely.

Motor lever 31......92'' Accelerator ring 32...84'' Motor ring 33...0'' Throttle ring 3
4...20° (el indicates the state when the motor lever 31 is at the 20" throttle open position. Assuming that the accelerator pedal is depressed at the full throttle angle, the motor ring 33 will move as the accelerator ring 32 rotates. The throttle ring 34 also rotates to the 20° open position and the throttle is maintained at a position between 2O2, but the pawl 33d comes into contact with the motor lever 31 and prevents rotation.The accelerator ring 32 rotates further by 64 degrees. Then, the pawl 32a comes to the position of the throttle ring pawl 34a, which is in contact with the motor ring pawl 33a, which is at the forward position of 64 degrees.Therefore, in this case, as soon as the accelerator is depressed, the throttle moves to 20''.
The rotation of the accelerator ring 32 thereafter is absorbed by the expansion of the elastic member.

Motor lever 31......72'' Accelerator ring 32...84° Motor ring 33...20'' Throttle Ring 34 20 Immediately when the accelerator is depressed to the opening angle, the throttle opens to the throttle opening angle, and then the accelerator ring 32 rotates the remaining angle while stretching the elastic means 36. The accelerator ring itself stops before 33a.

FIG. 1O is a conceptual diagram shown for reference in order to make it easier to understand the concept of the operation explained in FIG. 9. ia+, (bl,
(C1, fd+ are (al, (bl, T
el, (corresponds to d+. Also, in Fig. 9, mode 1
Taleper 31, accelerator ring 32, motor ring 33
, the throttle ring 34, etc. rotate in the circumferential direction of the spring rotating portion 23, but in FIG. 10, the amount of movement in the circumferential direction is replaced with the amount of movement in the length direction.

As can be seen from the figure, the elastic means 36 of the spring rotating part 23 has a larger elastic force than the throttle spring, and is set so that the elastic means 36 does not expand during normal operation, and only the throttle spring expands. ing.

FIG. 11 shows another modification, which differs from the first example only in that another elastic means 37 is provided.

This elastic means 37 is fixed to the throttle ring 34 at one end and to the motor ring 33 at the other end.

FIG. 12 shows a conceptual diagram of the operation and corresponds to +dl in FIG. 10.

The purpose 1 of setting this elastic means 37 is to provide a mechanical fail-safe system, because if the driver fully opens the accelerator pedal during traction control, it will become impossible to suppress excessive spin, which is the original purpose of this system. This chapter is set to give a warning to the driver so that the function of the present invention of this adjustment device will not be accidentally activated during normal traction control. That is, as shown in FIG. 12, when the fail-safe function starts to operate, the elastic means 3
The elastic force generated by 7 begins to be applied directly to the accelerator pedal, giving a warning to the driver.

〔effect〕

As explained in detail above, the present invention provides traction control of the throttle opening through a throttle opening adjustment device, and in normal conditions, the throttle opening is controlled by controlling the position of the morph lever according to the spin behavior. In abnormal spin conditions where excessive spin persists for a predetermined period of time, the system determines whether the throttle opening guarantee function of the throttle opening adjustment device has been activated or is malfunctioning, and stops traction control. It is possible to accurately stop and continue traction control, which has a significant effect on improving reliability.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram showing the entire throttle opening adjustment device according to the present invention, FIG. 2 is a flowchart of a program executed by the traction control circuit, FIG. 3 is a diagram explaining a normal traction control state, and FIG. 4 is a diagram explaining the relationship between control variables and dark values for determining an abnormal spin state, Figures 5 to 8 are diagrams of the detailed configuration of the throttle opening adjustment device, and Figures 9 and 10 are its operation. FIG. 11 is a diagram showing a modification of the adjusting device shown in FIGS. 5 to 8,
FIG. 12 is an explanatory diagram of its operation. 1... Traction control circuit, 3...
CPU. 5... Morph lever position detector, 6...
・Throttle position detector, 7.8... A/D converter, A... Throttle opening adjustment device, 24...
...Ring mechanism, 31...Morph lever. Figure 3 S 40

Claims (3)

[Claims] (1) Through a throttle opening adjustment device that is provided in the middle of the accelerator wire path between the engine throttle and the accelerator pedal and includes a ring mechanism consisting of three ring members, a spring rotation section having a motor lever, and a drive section for the motor lever. a motor lever position detector attached to the drive section of the motor lever to detect the rotation angle of the motor lever, and a throttle position detector attached to the rotating shaft of the engine throttle. The wheel speed sensor attached to the wheel axle calculates data necessary for traction control based on the input signals from the two detectors and the wheel speed sensor, and sends a command signal to the drive unit of the motor lever, which is an actuator. As a result of the above calculation, the control circuit controls the motor lever phase angle of the adjustment device by outputting an opening/closing command according to the spin behavior of the drive wheel in the normal state as a result of the above calculation, and controls the motor lever phase angle of the adjustment device for a predetermined time or more. When an abnormal spin state occurs in which a throttle closing command is output continuously, the signal of the throttle position detector is compared with a set throttle opening, and if the signal is larger than the set throttle opening, the control of the control circuit is stopped; If the signal is smaller than the second set throttle opening, the signal from the motor lever position detector is compared with the second set throttle opening, and if it is larger than the second set throttle opening, the control of the control circuit is stopped, and if it is smaller, the above calculation is continued. Throttle opening control device. (2) The throttle opening degree control device according to claim 1, wherein the motor lever position detector and the throttle position detector are each constructed by a potentiometer. (3) the traction control circuit determines a failure by comparing it with a set throttle opening when an abnormal spin condition occurs;
The throttle according to claim 1 or 2, wherein the control is stopped by blocking the transmission of the command signal to the drive unit of the throttle opening adjustment device based on the determination signal. Opening control device.