JPH01227838A - Throttle valve of internal combustion engine - Google Patents

Abstract

PURPOSE:To maintain the controllability of a throttle valve when the opening of the valve fails to be controlled by releasing the supply operation of driving force to effectively function the recovery force of a recovery member placed between a turning member connected to the throttle valve and an interlocking member connected to an accelerator pedal at the time of the failure in control. CONSTITUTION:In an equipment wherein the opening of a throttle valve 2 is controlled by a driving mechanism 3 controlled by a throttle valve ECU 4, the driving mechanism 3 is provided with an inner holder 22 stuck to an extension shaft 21 connected to a throttle valve shaft 12, an outer holder 25 loosely engaged with the holder 22, and a coiled spring 26 put between both of the holders 22 and 25. When the opening of the throttle valve is controlled, the driving force of a motor 34 is transmitted to a valve shaft 12 via both a rod 33 and the extension shaft 21. On the other hand, when the control function for the opening position of the valve is defective, the quantity of displacement according to the quantity of operation for the accelerator pedal 28 is transmitted to the valve shaft 12 via both of the holders 25 and 22 interlocking with a wire 29 and the coiled spring 26.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is applicable to, for example, when there is an abnormality in throttle valve opening adjustment performed in auto drive control, traction control, idle rotation speed control, etc. Use an effective internal combustion engine throttle valve device.

[Prior Art] In recent years, for example, in auto drive control, traction control, idle rotation speed control, etc., the throttle valve of an internal combustion engine is not mechanically connected to the accelerator pedal, and sensors that detect the opening of the throttle valve and the above-mentioned sensors have been developed. Equipped with an actuator that changes the opening degree, the amount of operation of the accelerator pedal,
Alternatively, a so-called link technology is used to drive an actuator to adjust the opening of the throttle valve and change the output of the internal combustion engine while using the detection results of the above sensor based on a control signal depending on the operating state of the internal combustion engine. It is known for its non-throttle. Since such a linkless throttle requires high reliability, as a countermeasure against abnormal operation, for example, in the event of abnormal operation, the accelerator pedal and the throttle valve are mechanically connected to perform a so-called fail-safe. A technique has been proposed. That is, (
1) An electromagnetic coil is interposed between the throttle shaft and a rotating shaft that is mechanically connected to the accelerator pedal and rotates when the accelerator is depressed, and when the electromagnetic coil is excited, the two shafts are separated.
When an abnormality in the control operation of the electronically controlled actuator is detected, the power supply to the electromagnetic clutch and electronically controlled actuator that connects both shafts when the electromagnetic coil is de-energized is stopped, and the throttle shaft and accelerator pedal are mechanically connected. "Throttle valve control device" (Japanese Unexamined Patent Publication No. 153945/1983) connected to the .

(2) During automatic control in which the DC motor automatically sets the throttle position to optimal efficiency based on the accelerator pedal position signal and the throttle valve position signal, if a device malfunction or other failure is detected, the throttle valve ``Fuel control system and method'' (Japanese Unexamined Patent Publication No. 60-243343) that smoothly switches to manual control only when the fuel is moved to a predetermined position or the position indicated by the accelerator pedal is met.

[Problems to be Solved by the Invention] However, the prior art has the following problems and is not yet sufficient. That is, (1) a configuration in which the power supply is stopped and the throttle shaft and the accelerator pedal are mechanically connected when an abnormality in the control operation of the electronically controlled actuator is detected does not work at the time the throttle shaft and the accelerator pedal are connected. , the difference between the actual throttle valve opening and the accelerator pedal depression exceeds the upper limit of the allowable range, so even if the accelerator pedal depression is 0, the throttle valve may still be opened by the specified amount. So, there was a problem that there was no reliable guarantee that the throttle valve would be fully closed.

(2) In addition, in a configuration where the throttle valve switches to manual control only when the throttle valve is moved to a predetermined position or matches the position instructed by the accelerator pedal, the throttle valve returns to the closed position by the action of a spring. Although the timing is predicted and the connection is made, it is extremely difficult to accurately judge the timing due to changes in characteristics due to changes in the spring over time and usage environment, etc. Therefore, it is necessary to keep the correspondence between the misthrottle valve and the accelerator pedal the same at all times. There was also the problem that it could not be maintained.

The present invention includes a sensor that detects the amount of operation of an accelerator pedal;
When an abnormality occurs in the electrical system such as the sensor that detects the throttle valve opening, the actuator that changes the opening, or the control circuit that drives the actuator, the mechanical device configuration
An object of the present invention is to provide a throttle valve device for an internal combustion engine that achieves a suitable fail-safe by reliably coupling a throttle valve and an accelerator pedal.

[Means for Solving the Problems] The present invention, which has been made to achieve the above object, is mechanically connected to a throttle valve of an internal combustion engine, and has a predetermined opening degree of the throttle valve. The throttle valve is rotated by a driving force supplied from the outside, and the opening degree of the throttle valve is adjusted to a target throttle valve opening degree commanded from the outside. a rotational member that is rotatably supported in the same direction as the rotational member, and an interlocking position that is in the same positional relationship as a rotational position reference portion of the rotational member with respect to a predetermined opening of the throttle valve. an interlocking member having a reference portion and mechanically connected to an accelerator pedal of the internal combustion engine to rotate in accordance with the amount of operation of the accelerator pedal; and an interlocking member interposed between the rotating member and the interlocking member. , when the rotational position reference part of the rotational member and the interlocking position reference part of the interlocking member are separated in the rotational direction, the rotational position reference part and the interlocking position reference part reach the same position in the rotational direction. a restoring member that generates a restoring force that rotates the rotating member until it rotates; and a driving force supplied to the rotating member from the outside, or a target throttle valve opening commanded from the outside when at least one of the driving force is abnormal. The gist of the present invention is a throttle valve device for an internal combustion engine, comprising: a release means for releasing power supply; and a throttle valve device for an internal combustion engine.

[Function] The throttle valve device for an internal combustion engine of the present invention solves the problems of the present invention through the following actions of each component. A rotating member mechanically connected to a throttle valve of an internal combustion engine receives a supply of driving force and a command for a target throttle valve opening.

When either one of them is abnormal, the release means releases the supply of driving force. Then, the restoring force of the restoring member interposed between the rotating member and the interlocking member mechanically connected to the accelerator pedal of the internal combustion engine works effectively. Therefore, the rotational position reference portion of the rotational member and the interlocking position reference portion of the interlocking member are
Rotate until the same position is reached in the rotation direction.

That is, in order to adjust the throttle valve opening of the internal combustion engine, when at least one of the driving force supplied from the outside or the target throttle valve opening commanded from the outside is abnormal, the supply of the driving force is canceled. At the same time,
A rotating member mechanically connected to the throttle valve and an interlocking member mechanically connected to the accelerator pedal of the internal combustion engine are interlocked by a restoring force generated by the restoring member, and the opening of the throttle valve is The correspondence relationship between the amount of operation of the accelerator pedal and the amount of operation of the accelerator pedal is always maintained the same.

Therefore, the throttle valve device for an internal combustion engine of the present invention has the following features:
Throttle valve interval control based on externally supplied driving force, commanded target throttle valve opening, etc.
At different times, the throttle valve and the accelerator pedal are mechanically coupled without impairing the correspondence between the opening degree of the throttle valve and the amount of operation of the accelerator pedal.

[Embodiment] Next, a preferred embodiment of the present invention will be described in detail based on the drawings. FIG. 1 shows a schematic configuration of an engine throttle valve device according to an embodiment of the present invention.

As shown in the figure, an engine throttle valve device 1
A throttle valve 2, which is disposed in the intake system of an engine (not shown) and adjusts the intake air amount of the engine, a drive mechanism 3 that rotates the throttle valve 2, and a drive mechanism 3 that controls the opening degree of the throttle valve 20. Throttle valve electronic control unit (hereinafter simply referred to as throttle valve ECU)
It is called.

) 4. Monitor electronic control unit (hereinafter simply referred to as monitor ECU) that monitors the operating state of the throttle valve ECU 4.

) 5. Electronic control device that controls the operating status of Nishijin (
Hereinafter, it will simply be referred to as ECU. )6.

The throttle valve 2 is connected to an intake passage 11a inside a throttle body 11 installed in an intake system of an engine (not shown).
The throttle valve shaft 12 is fixed to a throttle valve shaft 12 which is installed in the throttle valve shaft 12, and is rotated together with the throttle valve shaft 12 by the driving force supplied from the drive mechanism 3.

Next, the structure of the drive mechanism 3 will be explained. An inner spring holder 22 is press-fitted into an extension shaft 21 fixed to one end of the throttle valve shaft 12 so as to be rotatable therewith. Further, a pair of support shaft members 23a, 23b are rotatably fitted into the extension shaft 21, and movement of both support shaft members 23a, 23b in the axial direction of the extension shaft 21 is controlled by a pair of stoppers 24a, 24b. regulated by. The outer spring holder 25, which is loosely fitted into the inner spring holder 22, is supported by the support shaft members 23a, 23b and is positioned in the axial direction by the stoppers 24a, 24b. A coil spring 26 is provided between the inner spring holder 22 and the outer spring holder 25.
is interposed. The return spring 27 urges the outer spring holder 2δ in the direction of closing the throttle valve 2. One end 29a of the wire 29 connected to the accelerator pedal (not shown) of the engine, which is urged in the direction of zero operation amount by the spring 28a, is connected to the wire suspension part 3.
0 and is fixed to the outer periphery of the outer spring holder 25. A driven arm 31 is fixed to one end of the extension shaft 21, and a driven stud 32 is protruded from the driven arm 31. One end of the rod 33 is connected to the driven stud 32. On the other hand, a drive arm 36 is fixed to a motor shaft 35 of a motor 34 that generates driving force, and a drive stud 37 is protruded from the drive arm 36.

A drive stud 37 is connected to the other end of the rod 33. The drive mechanism 3 having such a structure controls the throttle valve EC during execution of throttle valve opening control.
The driving force supplied from the motor 34 rotating under the control of U4 is transmitted via the rod 33, the extension shaft 21, and the throttle valve shaft 12, and the throttle valve 2
The opening degree of the throttle valve is adjusted to the target throttle valve opening degree θ° commanded by the throttle valve ECU 4. On the other hand, when the throttle valve opening control is not executed or when the throttle valve opening control is abnormal, the displacement according to the operating amount α of the accelerator pedal 28 is controlled by the wire 29, the outer spring holder 25, the coil spring 26, the inner spring The signal is transmitted through a mechanical connection between the holder 22, the extension shaft 21, and the throttle valve shaft 12, and the opening degree of the throttle valve 2 is changed to an opening degree corresponding to the operation amount α of the accelerator pedal 2 days.

The throttle valve control device 1 of the engine includes a throttle position sensor that includes a potentiometer as a detector, which is connected to one end of the throttle valve shaft 12 and detects the opening degree of the throttle valve 2 from the amount of rotation of the throttle valve shaft 12. 41, an accelerator sensor 42 that detects the operation amount α of the accelerator pedal 28, a rotation angle sensor 43 that detects the rotational speed of the engine (not shown),
Idle wheel rotation speed sensor 44, driving wheel rotation speed sensor 45, which detects the wheel speed of the vehicle driven by the engine;
A neutral start switch 46 is provided to detect the current shift position of a transmission (not shown).

The detection signals of each sensor and switch are transmitted to at least one of the throttle valve ECU 4, monitor ECU 3, and ECU 6.
manually operated.

Throttle valve ECU4 includes CPU4a and ROM4b.
, RAM 4c, and backup RAM 4d as the main components, and is connected to a human output section 4f via a common bus 4e to perform human output with the outside. The detection signal θ of the throttle position sensor 41, the detection signal α of the accelerator sensor 42, the engine rotational speed Ne transmitted from the E'CU 6, the wheel speed VW, the shift position P, and the reset signal lNlTl transmitted from the monitor ECU 3 are human outputs. CP[J4a is manually operated via part 4f,
a calculates the target throttle valve opening degree θ' based on these human power signals and determines the control signal Sθ° to the motor 34. Further, the CPU 4a outputs the control signal Sθ° determined as described above to the drive circuit 51 that energizes the motor 34 via the human output unit 4f. The drive circuit 51 operates by receiving power from an on-vehicle power supply 52 via an ignition switch 53 and a relay 54 .

In addition, the monitor ECU 3 includes a CPU 5a, a ROM 5b, and a R
It is configured as a logic operation circuit centered around AM5c and backup RAM5d, and is connected to the human output section 5 via a common bus 5e.
It is connected to f and performs human output with the outside. Detection signal θ of throttle position sensor 41, accelerator sensor 42
The detection signal α, the engine rotational speed Ne transmitted from the ECU 6, the wheel speed VW, the shift position P, the monitor signal 5M0NI transmitted from the throttle valve ECU 4, and the control signal Sθ゛ output from the throttle valve ECU 4 are the human output section 5f. is manually input to the CPU 5a via the CPU 5a.
determines whether there is an abnormality in each signal, and if there is an abnormality, sends a control signal SR to the relay 54 via the input/output section 5f to open the contacts of the relay 54 and stop energizing the drive circuit 51. At the same time, it also outputs a control signal SE that activates a warning display 55 disposed inside the vehicle.

Furthermore, the ECU 6 has a CP[J6a, a ROM6b.

It is configured as a logic operation circuit centering on a RAM 6c and a backup RAM 6d, and is connected to a human output section 6f via a common bus 6e to perform input/output with the outside. Detection signal θ of throttle position sensor 41, rotation angle sensor 43
, idle wheel rotation speed sensor 44, drive wheel rotation speed sensor 4
5. The detection signal of the neutral start switch 46 is
It is manually input to the CPU 6a via the input/output section 6f, and the CPU 6
a transmits the engine rotational speed Ne, wheel speed VW, and shift position P to the throttle valve ECU 4 via the human output unit 6f.
and is output to the monitor ECU 3, and also controls an engine (not shown).

Next, the structure and operation of the inner spring holder 22, outer spring holder 25, and coil spring 26, which constitute the main parts of the drive mechanism 3, will be explained based on FIGS. 2, 3, and 4.

As shown in the exploded perspective view of the main part of FIG.
, 22b are provided in a protruding manner, and groove portions 22C922d are provided in recesses on mutually opposite side surfaces of the protrusions 22a and 22b.

A coil spring 26 is wound around the outer peripheral surface of the inner spring holder 22.
One end 26a of ! is in the groove 22c, and the other end 26b! ,
? The coil springs 26 are respectively engaged with the grooves 22d, and deformation of the coil springs 26 in the releasing direction is suppressed. Both one end 26a and the other end 26b of the coil spring 26 protrude from the upper surface of the projections 22a, 22b of the innerspring holder 22 in the normal direction of the innerspring holder 22. On the other hand, a protrusion 25a is provided on the inner circumferential surface of the outer spring holder 25, and grooves 25b and 25c are formed on opposite side surfaces of the protrusion 25a. Projection 22 of inner spring holder 22
a, 22b and the protrusion 2 of the outer spring holder 25
The inner spring holder 22 is loosely fitted into the outer spring holder 25 at a position where the inner spring holder 22 and the outer spring holder 25 closely face each other. Then, the grooves 22 recessed in the protrusions 22a and 22b
c, 22d are grooves 25b carved in the protrusion 25a;
25c. coil spring 2
One end 26a of the 6 contacts or approaches the groove 22c of the protrusion 22a and the groove 25b of the protrusion 25a, while the other end 26b contacts the groove 22d of the protrusion 22b and the groove 25a of the protrusion 25a. 25c or comes close to it.

When the operation amount α of the accelerator pedal 28 and the throttle valve opening θ of the throttle valve 2 correspond, that is, when the throttle valve opening control is not executed, the inner spring holder 22 is moved as shown in FIG. The protrusions 22a, 22b of the outer spring holder 25 and the protrusion 25a of the outer spring holder 25 form a positional relationship in which they closely oppose each other, so that the outer spring holder 25 is rotated clockwise (in the figure) by an angle corresponding to the operation amount α of the accelerator pedal 28. ) or counterclockwise (indicated by arrow CCW in the same figure), it comes into contact with or approaches the groove 22c of the protrusion 22a and the groove 25b of the protrusion 25a. The inner spring holder is connected to the inner spring holder via the coil spring 26 from one end 26a of the coil spring 26, or the other end 26b that contacts or is close to the groove 22d of the protrusion 22b and the groove 25c of the protrusion 25a. 22 are interlocked to set the opening degree θ of the throttle valve 2 to an opening degree corresponding to the operation amount α of the accelerator pedal 28. on the other hand,
When executing throttle valve opening control, the inner spring holder 22 is rotated by the motor 34, as shown in FIG. For example, arrow C in the same figure
Move away clockwise as indicated by W. Then, one end 26a of the coil spring 26 separates from the groove 22c of the projection 22a and comes into contact with the groove 25b of the projection 25a, while the other end 26b of the coil spring 26 moves away from the groove 22c of the projection 22a.
Since the coil spring 26 comes into contact with the groove 22d of the inner spring holder 2b and moves away from the groove 25c of the protrusion 25a, the amount of deformation of the coil spring 26 increases according to the amount of rotation of the inner spring holder 220. Note that, conversely, the inner spring holder 22
The protrusions 22a and 22b of the outer spring holder 2
The amount of deformation of the coil spring 26 similarly increases when the coil spring 26 moves away from the protrusion 25a of No. 5 in the counterclockwise direction indicated by the arrow CCW in the figure. In this state, when it is determined that the throttle valve opening control is abnormal and the power supply to the motor 34 is stopped, the driving force is no longer transmitted, so the inner spring holder 22 becomes almost unloaded. Therefore, the elastic energy stored in the coil spring 26 is released due to its deformation, and the coil spring 26 is deformed in a releasing direction that reduces the amount of deformation.

Therefore, the inner spring holder 22 is moved to a position where one end 26a of the coil spring 26 abuts the groove 22c of the protrusion 22a or the other end 26b of the coil spring 26 abuts the groove 25c of the protrusion 25a. It rotates and returns to the positional relationship shown in FIG. 2 again. In this way, even when the throttle valve opening control is abnormal, the correspondence relationship between the operation amount α of the accelerator pedal 2 and the throttle valve opening θ of the throttle valve 2 is maintained the same.
The accelerator pedal 2 and the throttle valve 2 can be mechanically coupled.

Such an operation is realized by the monitor ECU 3 executing fail-safe processing shown in FIG. This failsafe process is repeatedly executed at predetermined time intervals after the monitor ECU 3 is started.

First, in step 100, the throttle valve ECU 4
Then, a process of reading individual output signals from the ECU 6 is performed. In step 110, it is determined whether the throttle valve ECU 4 is normal, in step 120 it is determined whether the human power signal is normal, and further, in step 13
At 0, processing is performed to determine whether the output signal is normal. If affirmative judgments are made in all steps from step 110 to step 130, it is assumed that the throttle valve opening control is being performed normally, and the present fail-safe processing is immediately terminated. On the other hand, if a negative determination is made in any one of steps 110 to 130,
Assuming that there is an abnormality in the throttle valve opening control, the process proceeds to step 140. In addition, in step 110, it is determined whether the monitor signal 5M0NI is transmitted from the throttle valve ECU 4 to the monitor ECU 3 at predetermined time intervals, and in step 120, the throttle valve ECU
In step 130, it is determined whether the detected values of each sensor inputted manually or the data transmitted from the ECU 6 are within an appropriate range.Furthermore, in step 130, a control signal Sθ° outputted from the drive circuit 51 is determined. It is determined whether the signal is within an appropriate range.

In step 140, which is executed when a negative determination is made in any one of steps 110 to 130, it is assumed that an abnormality has occurred in the throttle valve opening control, and a control signal SR is output to the relay 54 to open the relay contact. processing is performed.

Through this process, the power supply to the drive circuit 51 is stopped, so the motor 34 no longer generates drive force, and the accelerator pedal 28 and the throttle valve 2 are mechanically coupled by the operation of the drive mechanism 3 described above. Ru. In the step 150, processing for activating a warning indicator is performed. Through the process of step 150, the occurrence of an abnormality in the throttle/sottle valve opening degree control can be communicated to the driver by voice and display. Next, the process proceeds to step 160, where the throttle valve control system abnormality flag FT, which indicates an abnormality in throttle valve opening control, is set to the value 1, and the backup RAM 5 of the monitor ECU 3 is
After performing the process of storing data in d, the fail-safe process ends on -d. Thereafter, the failsafe process repeats steps 100 to 160 at predetermined time intervals.

Note that in this embodiment, the inner spring holder 22
is the rotating member, the outer spring holder 25 is the interlocking member, the coil spring 26 is the restoring member, and the monitor EC
U3 and relay 54 each correspond to release means.

As explained above, according to this embodiment, each sensor and switch 41 to 46, ECU 6, throttle valve EC
Even when there is an abnormality in the throttle valve opening control due to an electrical system failure, such as a failure of U4 or motor 34 or a malfunction due to noise, etc., the throttle valve 2 will continue to operate within the entire operating range from the fully open state to the fully open state.
It is possible to realize a mechanical connection between the throttle valve 2 and the accelerator pedal 28 that maintains the same correspondence between the opening degree θ and the operation amount α of the accelerator pedal 28 at all times.

Therefore, a reliable fail-safe function of the engine throttle valve device 1 can be guaranteed, and the reliability of the device is improved.

In addition, fail-safe operation is achieved by a drive mechanism 3 consisting of mechanical parts such as an inner spring holder 22, an outer spring holder 25, and a coil spring 26, which is interposed between the throttle valve 2 and a motor 34 that rotates the throttle valve 2. Because of this configuration, deterioration due to changes in the characteristics of each mechanical component over time or due to changes in the usage environment such as temperature, humidity, vibration, etc. is relatively unlikely to occur, and the durability of the device is also increased.

Furthermore, even when the throttle valve opening cannot be controlled while the vehicle is running, the correspondence between the accelerator pedal operation amount from 0 to the maximum amount and the throttle valve opening from 0 to the maximum amount is guaranteed by mechanical coupling. Therefore, the driver can adjust the engine output to a desired value by operating the accelerator pedal, so that sufficient limp home function can be achieved.

In addition, when the throttle valve opening cannot be controlled, a warning indicator 5 indicates that a failure has occurred and that fail-safe processing is in progress.
5, the information is transmitted to the driver, so that the driver can quickly shift to the driving state by operating the accelerator pedal without giving the driver a sense of discomfort.

Furthermore, when the throttle valve opening cannot be controlled, the throttle valve control system abnormality flag FT is set to the value 1,
Since it is stored in the backup RAM 5d of the monitor ECU 3, self-diagnosis based on the diagnosis code
This enables early detection of failure locations.

In this embodiment, the coil spring 26 is wound around the outer periphery of the inner spring holder 22. However, for example, a coil spring may be arranged around the inner periphery of the outer spring holder 25.
It may be configured to work in conjunction with 2.

Further, in this embodiment, the inner spring holder 22 and the seventh outer spring holder 25 are linked by the restoring force of the coil spring 26, but for example, the outer circumferential surface of the inner spring holder 22 and the inner A permanent magnet or the like may be disposed on the circumferential surface in a position that allows both holders 22 and 25 to be positioned, and the inner spring holder 22 and outer spring holder 25 may be configured to interlock with each other by magnetic force acting as a restoring force. .

Although the embodiments of the present invention have been described above, the present invention is not equally limited to these embodiments, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention. .

As detailed above, the throttle valve device for an internal combustion engine of the present invention uses a driving force supplied from the outside or a command from the outside in order to adjust the throttle valve opening of the internal combustion engine. When at least one of the target throttle valve openings is abnormal, the supply of driving force is canceled, and a rotating member is mechanically connected to the throttle valve, and an interlocking member is mechanically connected to an accelerator pedal of the internal combustion engine. are interlocked by the restoring force generated by the restoring member, so that the correspondence between the opening degree of the throttle valve and the operation amount of the accelerator pedal is always maintained the same. Therefore, even when the throttle valve opening control is abnormal, the throttle valve and accelerator pedal can maintain the correspondence between the throttle valve opening and the accelerator pedal operation amount, including the fully open state of the throttle valve. Since reliable mechanical connection can be guaranteed, the reliability of the device is dramatically improved.

In addition, since it exhibits sufficient functionality with a simple mechanical configuration,
The durability of the device also increases because it is less likely to be adversely affected by changes in the characteristics of the components that make up the device over time or due to the environment in which it is used.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is an exploded perspective view of its main parts, Figs. 3 and 4 are explanatory diagrams showing the operation of its main parts, and Fig. 5 is an exploded perspective view of its main parts. It is a flowchart similarly showing the control. 1... Engine throttle valve control device 2
... Throttle valve 3 ... Drive mechanism 4 ... Throttle valve electronic control unit (throttle valve ECU) 5 ... Monitor electronic control unit (monitor ECU) 12 ... Throttle valve shaft 21 ...
Extension shaft 22... Inner spring holder 25...-
Outer spring holder 26... Coil spring 2B... Accelerator pedal 29... Wire 34... Motor 51... Drive circuit 54... Relay

Claims (1)

[Scope of Claims] 1 Mechanically connected to a throttle valve of an internal combustion engine, having a rotation position reference portion at a predetermined position corresponding to a predetermined opening degree of the throttle valve, and supplied from the outside. a rotary member that rotates the throttle valve by a driving force and sets the opening degree of the throttle valve to a target throttle valve opening degree commanded from the outside; and a rotary member supported rotatably in the same direction as the rotary member. , an interlocking position reference portion having the same positional relationship as a rotation position reference portion of the rotation member with respect to a predetermined opening degree of the throttle valve, and being mechanically connected to an accelerator pedal of the internal combustion engine. an interlocking member that rotates in accordance with the amount of operation of an accelerator pedal; a rotational position reference portion of the rotational member and an interlocking position reference portion of the interlocking member, the interlocking member being interposed between the rotational member and the interlocking member; a restoring member that generates a restoring force that rotates the rotational position reference part and the interlocking position reference part until they reach the same position in the rotational direction when the rotational position reference part and the interlocking position reference part are separated in the rotational direction; An internal combustion engine comprising: a release means for canceling the supply of driving force when at least one of the driving force supplied from the outside or the target throttle valve opening commanded from the outside is abnormal. throttle valve device.