JPH01117946A - Throttle valve controller for internal combustion engine - Google Patents

Abstract

PURPOSE:To permit a throttle valve to be surely opened from a motor when the motor, etc., are in anomaly, by installing a connecting means which can connect a throttle gear interlocked with an accelerator operating element and a motor gear turned by the motor. CONSTITUTION:Though, when an accelerator operating element is depressed, an accelerator link 60 is turned through a cable 64, if the accelerator opening degree detected by an angle sensor 56 is less than a prescribed angle (angle in the case when a lever 84 contacts an upper limit stopper 92), a motor is not set into electric conduction. A planetary gear 8 rotates through the revolution around a throttle gear 16, together with a planetary carrier 37 through the meshing of the gears 22, 20, and 15 by the revolution of the planetary carrier 74 around the axis line of a motor output shaft 72, accompanied with the revolution of the above-described link 60, and a throttle valve 12 is opened. When the revolution exceeds a prescribed angle, a motor gear 20 is turned by a motor according to the opening degree of an accelerator, and the opening degree of the throttle valve 12 is adjusted by a motor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a throttle valve control device for an internal combustion engine, and more particularly to a control device for a throttle valve driven by a motor (electric motor).

[Conventional technology]

Japanese Patent Publication No. 58-25853 and Japanese Patent Publication No. 59-122
Publication No. 742 discloses that a throttle valve of an internal combustion engine is driven by an electric motor.

[Problem that the invention seeks to solve]

In a configuration where the throttle valve is driven by a motor, the accelerator operator is not mechanically connected to the throttle valve.
By detecting the operation amount of the accelerator operator by the detection means, the motor is controlled according to the detected value. Such a motor-driven throttle valve control device cannot control the throttle valve if an abnormality occurs in the motor or its control circuit.
Requires some kind of compensation device.

Japanese Patent Publication No. 58-25853 provides a clutch so that if an abnormality occurs in the motor, the clutch is disengaged to separate the throttle valve from the motor and return the throttle valve to the fully closed position.

However, with this configuration, there is a problem in that once the clutch is disengaged and the throttle valve is returned to the fully closed position, the throttle valve cannot be operated thereafter, and the vehicle cannot be transported to a repair shop, for example.

In order to solve this problem, the above-mentioned Japanese Patent Application Laid-Open No. 59-122742 provides a compensation mechanism that can mechanically connect the accelerator operator and the throttle valve in parallel with the throttle valve control device using a motor. It is something that However, in order to prevent this compensation mechanism from interfering with the normal operation of the throttle valve control device by the motor, connection is achieved only by operating the accelerator operator to the fully open position when the throttle valve is near the fully closed position. and is not engaged when the throttle valve is at a medium opening. Therefore, if control of the motor is lost with the throttle valve at a medium opening, the throttle valve will not open any further. There was a problem that it could not be opened or closed.

[Means for solving problems]

A throttle valve control device for an internal combustion engine according to the present invention includes, for example, as shown in FIG. 1, a throttle gear 16 attached to one end of a throttle shaft 14 that supports a throttle valve 12 disposed within a throttle body 10; A throttle planetary gear 18 that meshes with and revolves around the throttle gear 16, a motor gear 20 that is driven by a motor, a motor planetary gear 22 that meshes with and revolves around the motor gear 20, and an accelerator operator. The present invention is characterized by comprising a connecting means that can connect the throttle planetary gear 18 and the motor planetary gear 22 when operated, and a control means that controls the motor according to the amount of operation of the accelerator operator. It is something.

[For production]

The coupling means can act on the carrier of the motor planet gear 22 or the throttle planet gear 18 to move the motor planet gear 22 from a position away from the throttle planet gear 18 to an engaged position. Particularly, at the beginning of the operation of the accelerator operator, the carrier of the motor planetary gear 22 moves to mesh the motor planetary gear 22 with the throttle planetary gear 18, and at this time, the motor planetary gear 22 follows the revolution movement.

It rotates on its own axis. At this time, since there is no torque in the motor, the rotation of the motor planetary gear 22 is released as idle rotation of the motor gear 20, and the throttle valve 12 remains fully closed. When the motor planetary gear 22 and the throttle planetary gear 18 are fully engaged, the motor can be driven and the opening degree of the throttle valve 12 can be controlled via the motor planetary gear 22 and the throttle planetary gear 18. When the accelerator operator is released, the motor is driven to the fully closed position, and then the motor planetary gear 22 is separated from the throttle planetary gear 18 and the throttle valve 12 is moved away from the throttle planetary gear 18.
is fully closed by the return spring.

In addition, in the case of an abnormality such as the motor locking at a specific position during operation, when the accelerator operator is returned, the rotation of the carrier causes the motor planetary gear 22 to separate from the throttle planetary gear 18, and at this time the throttle Rotate the valve 12 in the closing direction. Finally, the throttle valve 12
is fully closed by a return spring. In such an abnormal state, when the accelerator operator is depressed from the fully closed state, since the motor gear 20 is now fixed, the rotation accompanying the revolution of the motor planetary gear 22 is caused to occur via the throttle planetary gear 18. This allows the throttle valve 12 to be opened to a certain extent.

〔Example〕

Figure 1 is a left side view of the throttle body 10 in Figure 3 as seen from the arrow ■, Figure 2 is a right side view seen from the arrow ■ in Figure 3, and Figure 3 is the same as in Figures 1 and 3. 3 is a sectional view through the throttle shaft 14 of FIG. 2. FIG. In addition, in order to clearly show the relationship between the gears, Section 1.

The figure is shown with the motor removed.

Referring to FIG. 3, the throttle valve 12 is attached to the throttle shaft 14 by a screw 30, and the throttle shaft 14 is attached to the throttle body 1 by a bearing 32.
0, and its both ends protrude from the throttle body 10. Furthermore, the accelerator shaft 34
and a connecting shaft 36 are each rotatably attached to the throttle body 10 parallel to the throttle shaft 14.

Referring to FIGS. 1 and 3, the throttle shaft 1
A throttle gear 16 is fixed to the left end of 4.

As shown in FIG. 1, the throttle gear 16 is formed as a sector gear having teeth only in an angular range corresponding to the rotational range of the throttle valve 12. This throttle gear 16 is adapted to engage with a fully closed stopper 17 when the throttle valve 12 is in a fully closed position. Similarly, a lever-shaped throttle planet carrier 37 is rotatably attached to the left end of the throttle shaft 14 and inside the throttle gear 16. The free end of the throttle planet carrier 37 is extended considerably as shown in FIG. It has become. Thereafter, the first stopper 38
is called a fully open stopper, and the second stopper 40 is called a fully closed stopper.
2 is attached between the free end of the throttle planet carrier 37 and the throttle body 10, and biases the throttle planet carrier 37 toward the fully closed stop 40.

A bin 44 is attached to the middle part of the throttle planet carrier 37 so as to protrude from the front and back, and the throttle planet gear 18 is rotatably attached to the front side of the bin 44, and the pitch circle of the throttle planet gear 18 is attached to the back side of the bin 44. A roller 46 of a diameter corresponding to the diameter is rotatably mounted. Throttle planet gear 18 is throttle gear 16
It meshes with and revolves around it.

A lever 48 is attached to the right end of the throttle shaft 14, and a throttle return spring 50 is hung between the lever 48 and a bin 52 installed upright on the throttle body 10 to move the throttle shaft 14 in the direction in which the throttle valve 12 closes. It is energizing. Further, this lever 48 faces outward and engages with a detection portion of a throttle position sensor 54 attached to the throttle body 10 so as to cover the end of the throttle shaft 14. Therefore, the opening degree of the throttle valve 12 can be detected.

Referring to FIGS. 2 and 3, the accelerator shaft 34
extends parallel to the throttle shaft 14 through the outside of the intake air passage of the throttle body 10, and a lever 58 that engages with the accelerator position sensor 56 is attached to its left end, and an accelerator link is attached to its right end. 60 is attached by a nut 62.

The accelerator link 60 has a circular arc portion 60a for attaching one end of a cable 64 connected to an accelerator operator (not shown), and a radial extension portion 60b for engagement with a connecting lever described later. Furthermore, an accelerator return spring 66 is installed between the accelerator link 60 and the throttle body 10, and the accelerator link
is biased in the direction of returning. Further, a stopper 68 is provided to define the upper limit of the operating range of the accelerator link 60. Note that, as is clear from the above description, the throttle gear shaft 14 is free with respect to the accelerator link 60, and the throttle valve 12 is driven by the motor that will be described below.

Referring to FIGS. 1 and 3, for controlling the throttle valve 12: a motor 70 is attached to the throttle body 10. As shown in FIGS. The output shaft 72 of the motor 70 is disposed on the same axis as the aforementioned connection shaft 36, and is therefore parallel to the throttle shaft 14. motor 7
The motor gear 20 is attached to the end of the output shaft 72 of the motor 0, while a lever-shaped motor planetary carrier 74 is fixed to the left end of the connection shaft 36. Similar to the bin 44 of the throttle planetary carrier 37, a bin 76 is attached to the motor planetary carrier 74 so as to protrude from the front and back,
The motor planet gear 22 is rotatably attached to the front side of the pin 74, and a roller 78 having a diameter corresponding to the pitch circle of the motor planet gear 22 is rotatably attached to the back side of the pin 74. Since the rotation center of the connecting shaft 36 is on the axis of the output shaft 72 of the motor 70, the motor planetary gear 22 can mesh with the motor gear 20 and revolve around it. And two rollers 46, 78
When the motor planetary gear 22 and the throttle planet 18 are engaged, they mutually roll to maintain a constant center-to-center distance between the motor planetary gear 22 and the throttle planet 18.

The motor 70 is an electronic control device (
ECU) 80. Electronic control bag ff (
The ECU 80 receives detection signals from the aforementioned throttle position sensor 54 and accelerator position sensor 56, and controls the motor 70 according to the amount of operation of the accelerator operator. Note that the electronic control unit (ECU) 80 can also receive other signals representing the operating state of the internal combustion engine, such as engine load, engine speed, and temperature.

Referring to FIGS. 2 and 3, a connecting lever 84 is fixed to the right end of the connecting shaft 36 by a nut 82. As shown in FIG. A roller 86 is attached to the free end of the connecting lever 84, and this roller 86 engages with the radial extension 60b of the accelerator link 60 from the accelerator opening side. A connecting lever return spring 88 is provided between the connecting lever 84 and the throttle body 1o, and biases the connecting lever 84 in the direction of opening the accelerator link 6o. While pressing, press the accelerator return spring 6.
6 is larger than the spring force of the connecting lever return spring 88, and the connecting lever return spring 88 does not have enough force to open the accelerator link 66.
When the accelerator link 60 is opened by operating the accelerator operator, the connecting lever 84 is moved to follow the accelerator link 6o. And the connecting lever 84
When the motor follows the accelerator link 60 and moves, the motor planetary carrier 74 fixed to the left end of the same connecting shaft 36 also rotates at the same time.

The rotation angle range of the connecting lever 84 is determined by the initial position stopper 90.
and the upper limit stopper 92, and in particular, the upper limit collar 92 limits the movement of the connecting lever 84 that follows the accelerator link 60 to an initial small portion of the entire rotation range of the accelerator link 60. . That is, the accelerator link 60 is at a predetermined angle θ. (FIG. 5), the connecting lever 84 hits the upper limit stopper 92 and stops, and at an angle larger than that, only the accelerator link 60 rotates. Conversely, when the accelerator link 60 closes, the predetermined angle e. At this time, the accelerator link 60 engages with the connecting lever 84 to return the connecting lever 84 at the same time.

The operation of the throttle valve control device having the above configuration is as follows.

1 and 2 show a state in which the accelerator operator is not depressed at all. At this time, the accelerator link 6
0 is returned to the initial position by the accelerator return spring 66, and the connecting lever 84 is pushed by the accelerator link 60 and comes into contact with the initial position stopper 90. The motor planet carrier 74, which is coupled to the coupling lever 84 by the coupling shaft 36, is in a position rotated counterclockwise around the motor gear 20 as seen in FIG. The planet carrier 37 abuts against the fully closed stopper 40 . In this state, the throttle gear 16 attached to the throttle shaft 14 is separated from the motor gear 20 and the accelerator link 60, and the throttle valve 12 is maintained in the fully closed position by the throttle return spring 50.

When you press the accelerator button, the accelerator link 60
rotates, and the rotation angle is measured by the accelerator position sensor 5.
6 and input to an electronic control unit (ECU) 80. The electronic control unit (ECU) 80 first controls the rotation angle of the accelerator link 60, that is, the accelerator opening at a predetermined angle θ. When the accelerator opening is less than a predetermined angle 00, the power to the motor 70 is cut off, and the accelerator opening is at a predetermined angle θ. When the above conditions are reached, electricity is applied to start substantial control of the motor 70 to bring the throttle valve 12 to an opening corresponding to the accelerator opening. Note that this predetermined angle θ.

As mentioned above, the connecting lever 84 is connected to the upper limit stopper 92.
The value is set such that the accelerator link 60 only rotates at an angle larger than that, and the accelerator link 60 stops when the accelerator link 60 hits the accelerator. Therefore, the predetermined angle e. It is also possible to generate a signal corresponding to when the coupling lever 84 hits the upper limit stop 92.

When the accelerator operator is depressed from fully closed, the accelerator link 60 rotates, and at the same time, the motor planetary carrier 74 rotates clockwise around the axis of the output shaft 72 of the motor 70 as viewed in FIG. This causes the motor planet gear 22 supported by the motor planet carrier 74 to
It revolves around 0, rotates on its own axis, and comes into engagement with the throttle planetary gear 18. From now on, the throttle planetary carrier 37 supporting the throttle planetary gear 18 is pushed from the motor planetary gear 22 via the throttle planetary gear 18, and rotates from the position where it contacts the full-open stopper 40 to the position where it contacts the full-open stopper 38. do. In this way, the throttle planet gear 18 is transferred to the throttle planet carrier 3.
7, the motor planetary gear 22 revolves around the motor gear 20 while meshing with the throttle planetary gear 18, and advances to the position shown in FIG.

Referring to FIGS. 4 and 5, the mounting position of the motor 70 to the throttle body 10 is such that the connecting lever 84 is in contact with the upper limit stopper 92 and the throttle planet carrier 3
7 comes into contact with the fully open stopper 38, the throttle planetary gear 18, the motor planetary gear 22, and the motor gear 20
are set so that they line up in a straight line. When the motor planetary gear 22 meshes with the throttle planetary gear 18, even if the initial state of the meshing is a mismeshing state in which the tips of the teeth touch each other, the motor planetary gear 22 will mesh with the throttle planetary gear 18. By rotating relative to the gears, a normal meshing state is immediately achieved, and in this state, each gear's ′! A (I! Roller 46 located at I
, 78 are in a rolling relationship, so that the center-to-center distance between the motor planetary gear 22 and the throttle planetary gear 18 is maintained constant.

4 and 5 show a stage where the accelerator opening reaches a predetermined angle e0 after going through the initial state when the accelerator operator is depressed from the state shown in FIGS. 1 and 2. It is something. Until this stage, the power to the motor 70 is cut off, so the output shaft 72 can be easily rotated by external force. Therefore, the rotating force of the motor planetary carrier 74 is transferred to the throttle planetary gear 18.
Then, the throttle planet carrier 37 is rotated to the predetermined position shown in FIG. 4, and the motor gear 20 is rotated idly, so that the throttle gear 16 is released by the spring force of the throttle return spring 50 to the position where the throttle valve 12 is fully opened. It is maintained immovably.

When the accelerator operator is further depressed from the state shown in FIGS. 4 and 5, as shown in FIGS. 6 and 7,
The opening degree of the accelerator link 60 is a predetermined angle θ. , and the connecting lever 84 is urged by the connecting lever return spring 88 and stops at the position where it hits the upper limit stopper 92. Therefore, each gear is maintained in the positional relationship shown in FIG. Electronic control unit ff (ECU)
80 indicates the accelerator opening at a predetermined angle θ. After determining that the above conditions have been reached, the motor 70 is energized and actual control of the motor 70 is started to bring the throttle valve 12 to an opening corresponding to the accelerator opening. This time, the motor 70 is given sufficient driving torque to overcome the spring force of the throttle return spring 50, so that the motor planetary gear 2 is transferred from the motor gear 20 attached to the output shaft 72 of the motor 70.
2 and a throttle planetary gear 18, the throttle gear 16 can be driven.

FIG. 8 shows an example of the relationship between the throttle opening and the accelerator opening, where the accelerator opening is at a predetermined angle θ. The throttle opening is 0 until the angle is 0, but when the accelerator opening reaches an angle of 00 or more, the throttle opening changes as a function of the accelerator opening. In this way, the throttle opening degree can be set in advance as a function of the accelerator opening degree, and the throttle opening degree is appropriately controlled by controlling the drive position of the motor 70. In addition, the 8th
In the figure, the throttle opening is shown in a linear relationship with the accelerator opening, but any relationship other than the linear relationship may be used. Further, the throttle opening degree can also be corrected using engine parameters other than the accelerator opening degree. The motor 70 is connected to the throttle position sensor 5
The motor 70 is controlled by comparing the position detected by the motor 4 with the target position, and if a step motor is used as the motor 70, open loop control is possible.

As explained above, according to the present invention, when operating the accelerator operator, the accelerator opening degree is set to the predetermined value θ. The motor planetary gear 22 and the throttle planetary gear 18 are separated until a predetermined value e0 is reached. The predetermined value e0 corresponds to the initial short period of operation of the accelerator operator, and the driver feels this period is not so much as an empty depression of the accelerator operator, but more like a play in the accelerator operator. It is. Further, when the accelerator operator (accelerator link 60) is opened, the spring force of the accelerator return spring 66 and the opposite spring force of the connecting lever return spring 88 are applied first, and the connecting lever 84 is moved to the upper limit stop 92. After hitting the connection lever return spring 8
Since the spring force of 8 disappears, as shown in Fig. 9,
The pedal force of the accelerator operator is a predetermined value θ. This changes in a step-like manner, and the driver can feel this change. Then, you can feel that the first stage is a play, and that the throttle control is actually being performed after the pedal force increases.

When opening the accelerator operator and closing the accelerator link 60, the operation is opposite to that described above. That is, the accelerator opening degree is a predetermined value θ. The throttle control by the motor 70 is performed accordingly until the accelerator opening reaches a predetermined value θ. When this happens, the power to the motor 70 is cut off, allowing the motor gear 20 to idle. Connection lever 84
is returned, thereby causing the motor planet carrier 74 to move to the fourth position.
Rotating counterclockwise in the figure, the motor planetary gear 22 and the throttle planetary gear 18 are separated, and the throttle valve 12 is closed by the throttle return spring 50.

Next, while the opening degree of the throttle valve 12 is controlled by the motor 70, the motor 70 or the electronic control unit (ECU)
) The case where an abnormality occurs in 80 will be explained.

FIG. 10 shows a case where the motor 70 is locked and the motor gear 20 is fixed at the angular position (A
), the driver will likely loosen the accelerator pedal if he senses something is wrong. Then, the motor planetary carrier 74 rotates counterclockwise (B). When the motor planet carrier 74 rotates counterclockwise, the motor planet gear 22 becomes separated from the throttle planet gear 18, and the throttle planet carrier 37 comes into contact with the fully closed stopper 40 (C).

However, in a normal case, when the accelerator operator is returned, the throttle valve 12 is controlled by the motor 70 to a predetermined accelerator opening e. After the motor 70 is fully closed, the drive torque of the motor 70 is set to substantially O, and the motor planetary carrier 74 is returned while the motor gear 20 is idling, whereas in this case, the motor gear 20 is fixed at the drive position. Tama,
By returning the motor planetary carrier 74, the throttle valve 12 is fully closed from its locked opening position.

That is, since the motor gear 20 is fixed, when the motor planet carrier 74 is returned counterclockwise, the motor planet gear 22 rotates in the direction of arrow A, and the throttle planet gear 18 meshed with it rotates in the direction of arrow B. Rotate. Therefore, the throttle gear 16 in mesh with the throttle planetary gear 18 rotates in the direction of arrow C, that is, in the direction in which the throttle valve 12 closes. Rotation of the throttle gear 16 in the closing direction is facilitated by a throttle return spring 50. This fully open throttle operation applies not only when the motor 70 is not locked, but also when the angular position of the motor gear 20 fluctuates due to an electrical abnormality in f(!!).

Next, after closing the throttle valve 12 in this way in the event of an abnormality, the throttle valve 12 is then transported to a repair shop or the like.
The case where 2 is opened will be explained.

In this case, the throttle valve 12 can be opened to a certain degree by following the procedure reverse to that described above with reference to FIG.

In this case, the motor gear 20 remains fixed in the driving position. Alternatively, the fluctuation may be due to some other electrical abnormality, in which case a compensation circuit built into the electronic control unit (ECU) 80 or a compensation circuit installed in parallel with the electronic control unit (ECU) 80 may be used. A circuit fixes the motor gear 20 in an appropriate position. When the accelerator operator is then depressed, the motor planetary carrier 74 rotates clockwise and rotates around the fixed motor gear 20, in the same way as explained with reference to FIG. It meshes with 18. The rotational movement of the motor planetary carrier 74 continues until the throttle planetary carrier 37 comes into contact with the full-open stopper 38, during which time the throttle planetary gear 18 rotating in the direction opposite to the arrow B in FIG. It rotates it in the direction. The characteristics of the operation of the throttle valve 12 in the event of an abnormality are shown by the broken line in FIG. It is possible. Therefore, the vehicle can be restarted at least at the lowest fluid output level.

FIG. 11 shows a second embodiment of the present invention, in which the accelerator link 60 and connection lever 84 of FIG. 2 are modified. In FIG. 11, the coupling lever return spring 88 of FIG. It is provided with an arc-shaped cam surface 60d continuously formed from. Ribs 60e extend from the accelerator link 60 at regular intervals facing the radial cam surface 60c, and the connecting lever 84
A groove is formed at one end to guide the attached roller 86,
The roller 86 is prevented from coming off the accelerator link 60 when the roller 86 moves from the radial cam surface 60c to the arcuate cam surface 6od.

The connecting lever 84 is a double arm lever attached to the connecting shaft 36, and the roller 86 is attached to the end of one arm, and another roller 87 is attached to the end of the other arm. ing. As shown in FIG. 11(A), when the accelerator link 60 is in the initial position, the roller 86 of one arm engages with the radial cam surface 60c as described above, and when the accelerator operator is operated, the roller 86 of one arm engages with the radial cam surface 60c as described above. When the accelerator link 60 is rotated, it moves along the radial cam surface 60c, thereby rotating the connecting lever 84 by a predetermined angle, and this roller 86 moves between the radial cam surface 60c and the arcuate cam surface 60d. (B).

In the initial state, the arm on the side to which the other roller 87 is attached comes into contact with the fully closed stopper 90, and this roller 87
7 does not initially engage with the accelerator link 60 (A), but when the other roller 86 reaches the boundary between the radial cam surface 60c and the arcuate cam surface Sod, it contacts the arcuate cam surface 60d. (B) Therefore, the two rollers 86 and 87 will now both come into contact with the arc-shaped cam surface 60d, and even if the accelerator link 60 rotates further, the connection lever 84 will not rotate any further (C). Therefore, the coupling lever 84 is maintained in a constant angular position even without the upper limit stop 92 of FIG. The state shown in FIG. 11(B) corresponds to the position where the connecting lever 84 is in contact with the upper limit stopper 92 shown in FIG. In addition, the connecting shaft 3
The motor planet carrier 74 described with reference to FIGS. 1 and 3 is attached to the other end of 6, and this motor planet carrier 74 rotates together with the coupling lever 84.

Accordingly, the motor planet gear 22 mounted on the motor planet carrier 74 and the associated motor gear 20, throttle planet gear 18, and throttle gear 16 can function similarly to those of the embodiments described above.
[Effects of the Invention] As explained above, according to the present invention, the throttle valve can be controlled by a motor, and even if an abnormality occurs in an electric component such as the motor, the throttle valve can be controlled by returning the accelerator operator. The throttle valve can be opened to the desired opening degree by stepping on the opening and then operating the accelerator operator.

[Brief explanation of the drawing]

FIG. 1 is a third diagram showing a throttle valve control device according to the present invention.
Left side view seen from the arrow ■ in the figure, Figure 2 is the arrow ■ in Figure 3
3 is a horizontal sectional view showing the throttle valve control device according to the present invention, and FIGS. 4 and 5 show the throttle valve control device of FIGS. 1 and 2 in the initial operating stage, respectively. Figures 6 and 7 are diagrams showing a certain state, respectively, and Figures 6 and 7 are diagrams showing stages in operation that are further advanced from Figures 4 and 5, respectively. Figure 8 explains the relationship between the throttle opening and the accelerator opening. Figure 9 is a diagram explaining the accelerator depression force that changes with the accelerator opening degree, Figure 10 is a diagram for explaining
The figure is a diagram for explaining the operation of the throttle valve control device in the event of an abnormality, and FIG. 11 is a diagram showing a second embodiment of the present invention. 14... Throttle shaft, 16... Throttle gear, 18... Throttle planet gear, 20... Motor gear, 22... Motor planet gear, 36... Connection shaft, 37... Throttle planet carrier , 50...throttle return spring, 60...
Accelerator link, 70...Motor, 74...Motor planetary carrier. 84...Connection lever °-0 1 Figure 22...Motor planetary gear 84...Distance and rotation 4 Figure 6 Figure 7 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] A throttle gear attached to one end of the throttle shaft that supported the throttle valve, a throttle planetary gear that meshes with the throttle gear and revolves around it, a motor gear that is driven by a motor, and a motor gear that meshes with the motor gear and revolves around it. A rotating motor planetary gear, a connecting means capable of connecting the throttle planetary gear and the motor planetary gear when an accelerator operator is operated, and a control means that controls the motor according to the operation amount of the accelerator operator. A throttle valve control device for an internal combustion engine, comprising: