JPS63109244A - Control device for linkless throttle valve - Google Patents

Abstract

PURPOSE:To enable a vehicle to travel when a throttle valve is abnormal by providing a driving member which is directly connected to said throttle valve on the outer part of an intake pipe, and enabling the manual operation of said throttle valve from within a vehicle room via an engaging/disengaging connecting member. CONSTITUTION:In the captioned device in which an actuator 7 is linked to one end of the stem 13 of the throttle valve 5 of an intake pipe 3, the outer end part of the valve stem 13 is projected to the outside of the intake pipe 3 and an installing part 21 is formed on its end part. And, when the throttle valve is unable to normally operate due to the failure of the actuator 7 or its control, etc., an arm 9 is installed and fixed to the installing part 21 and the end parts 33 of cords 29 are engaged with the coupling grooves 25 of the arm 9, to manually open and close the throttle valve 5 by operating a handle 31 from within a vehicle room. Thereby, a vehicle can be made travel to be moved to a repair place even at the time of abnormality, improving reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a linkless throttle valve, and particularly to a device used when a linkless throttle valve is abnormal.

[Prior Art] Conventionally, devices have been proposed that attempt to optimally control the output of an internal combustion engine based on the driving state of a vehicle, without leaving it to the driver's arbitrary accelerator operation. For example, a so-called linkless throttle valve configuration has been proposed that controls the output of the internal combustion engine by adjusting the amount of intake air supplied to the internal combustion engine based on commands from a computer, etc. (Japanese Patent Laid-Open No. 60-190626 Publication No.). As shown in FIG. 3, the linkless throttle valve connects a throttle valve 202 provided in an intake pipe 200 to a disk-shaped rotor 20.
The valve is directly opened and closed by a motor 206 equipped with a motor 206.

By the way, since the linkless throttle valve is not mechanically connected to the accelerator pedal, it is conceivable that the linkless throttle valve will stop operating due to a failure of the motor or controller.

In response to this, there is a technique disclosed in Japanese Unexamined Patent Application Publication No. 153945/1983 as a technique that allows a vehicle to run even when the motor fails. In this technology, the throttle valve is driven by a motor during normal operation, while when the motor fails, the throttle valve is mechanically connected to the accelerator pedal to enable the vehicle to run.

[Problems to be Solved by the Invention] However, in the conventional linkless throttle valve, when the motor or controller fails, the return spring 208 shown in FIG. 3 fully opens the throttle valve, causing the internal combustion engine to run out of control. However, the following problems have been involved:

(i) With the technology of relaxing the throttle valve using a return spring, it is possible to keep the internal combustion engine in an idling state or a stopped state to provide a fail-safe in the event of an abnormality; It becomes impossible to drive.

Therefore, there was a problem in that so-called limp home, which would allow the vehicle to travel to the nearest service station, was no longer possible.

(ii) The technology of connecting the accelerator pedal and throttle valve using an electromagnetic clutch in the event of a failure of the motor, etc. not only complicates the device, but also causes damage to the linkless throttle valve if the electromagnetic clutch is connected incorrectly when the actuator is normal. may not function properly.

The present invention solves the above problems and provides a linkless throttle valve control device that has a simple configuration and enables a vehicle to run when the linkless throttle valve is abnormal without affecting other devices. For the purpose of providing.

[Means for Solving the Problems] As a means for achieving the object of the present invention, there is provided a control device for a linkless throttle valve that uses an actuator to drive a throttle valve that adjusts the amount of air supplied to an internal combustion engine. A driving member directly connected to the valve is provided outside the intake pipe, and has a distal end that can be freely engaged and detached from the driving member, and when engaged,
The gist of the present invention is a control device for a linkless throttle valve, which is characterized in that it includes an operating member that allows a driver to manually operate the throttle valve from inside a vehicle interior.

The driving member is, for example, a member directly connected to the shaft of a throttle valve.
Or an arm that is detachably connected.

[Function] In the linkless throttle valve control device of the present invention, the throttle valve opening is normally controlled by an actuator, but by engaging the tip of the operating member with the drive member, the operating member can be operated from inside the vehicle. If you operate the throttle valve, the throttle valve will be operated artificially.

[Embodiment] Next, a control device for a linkless throttle valve according to a first embodiment of the present invention will be explained based on FIG.

In the figure, reference numeral 1 denotes a linkless throttle valve, which is connected to an intake system of an engine (not shown) and is a device for adjusting air intake supplied to the internal combustion engine. The linkless throttle valve 1 includes a cylindrical intake pipe 3;
A throttle valve 5 disposed within the throttle valve 5, an actuator 7 for driving the opening/closing valve of the throttle valve 5, an arm 9 which is a driving member directly connected to a rotating shaft (throttle shaft) 13 of the throttle valve 5, and an arm 9 that is engaged with the arm 9. Operation member 1
1 as the main configuration.

The throttle valve 5 is connected to the throttle shaft 13 within the intake pipe 3.
It is fixed with screw 15. The throttle shaft 13 has one end connected to an actuator 7 outside the intake pipe 3, and the other end connected to a throttle opening detection section 17 outside the intake pipe 3. The return coil spring section 19 and the attachment of the arm 9 form a section 21.

The actuator 7 is composed of a stepping motor or the like, and rotates the throttle shaft 13 based on an electric signal from a controller (not shown). The throttle opening detection section 17 is made up of a contactor and a contact resistor supported by the throttle shaft 13, and outputs an opening signal of the throttle valve 5 to a controller (not shown). In addition,
Slot-○-le opening detection section 17. A well-known technique is used to control the opening degree of the throttle valve by the actuator 7.

The return coil spring portion 19 is connected to the throttle shaft 13
It is a fail-safe member that always biases the throttle valve 5 in the closing direction, and fully opens the throttle valve 5 in the event of a failure of the actuator 7 to prevent the vehicle from running abnormally.

The arm 9 is a long plate-shaped member that is connected to a mounting portion 21 formed at one end of the throttle shaft 13 through a fitting hole 23 . A coupling groove 25 for engaging with the operating member 11 is formed at both ends of the arm 9, and a tub-shaped groove is formed adjacent to the coupling groove 25 for arranging the operating member 11 at an appropriate position. A guide 27 is attached.

The operating member 11 consists of two strings 29 and a handle 31.

A coupling member 33 for engaging the coupling groove 25 of the arm 9 is connected to one end of the string 29 . The other end of the string 29 is attached to both ends of the handle 31.

Next, the operation of the linkless throttle valve control device of this embodiment will be explained.

The linkless throttle valve 1 is used with the arm 9 and the operating member 11 not attached to the throttle shaft 13 during normal driving. In this way, by not attaching the arm 9 and the operating member 11 during normal operation, the arm 9 and the operating member 11 may be damaged and the arm 9 may be damaged.
Also, the possibility of malfunctions such as the occurrence of abnormal operation of the throttle valve 5 due to the operation member 11 getting caught or erroneous operation is eliminated in advance.

On the other hand, the linkless throttle valve 1 is the controller,
When the actuator 7 or the like does not operate normally due to a failure or the like, the throttle valve 5 is fully opened by the return coil spring section and the vehicle is temporarily stopped. After the vehicle has stopped, move the arm 9 toward the throttle shaft 1 in the direction of the arrow.
3 is connected to part 21. Next, a nut 35 for preventing the arm 9 from being pulled out is attached to the threaded portion 37 formed in the mounting portion 21 in the direction of arrow B to securely fix the arm 9 to the mounting portion 21. Next, the coupling member 33 of the operating member 11 is attached to the coupling groove 2 of the arm 9 in the direction of the arrow C1.
5.

The linkless throttle valve 1 assembled in the above steps can be operated by operating the handle 31 in the direction of the arrow E or the direction of the arrow F from, for example, the vehicle interior, so that the arm 9 rotates around the throttle shaft 13. This allows a person or the like to directly open and close the throttle valve 5.

As a result, when the controller, actuator 7, etc. are out of order or the fail-safe function is activated and the actuator 7 cannot control the opening and closing of the throttle valve 5, the throttle valve 5 can be opened and closed directly.
The vehicle can be driven. Therefore, this embodiment allows the vehicle to travel to the nearest service station with a simple configuration and without affecting other devices, ensuring the minimum amount of vehicle travel. As a result, a limp home function can be added, and the reliability of the vehicle is significantly improved.

Next, a linkless throttle valve control device according to a second embodiment will be explained based on FIG. The linkless throttle valve 101 of this embodiment is almost the same as that of the first embodiment, and includes an intake pipe 103, a throttle valve 105. Actuator 107° arm 109. and operating member 1
It is composed of 11 mag. The arm 109 of this embodiment is provided at one end of the throttle shaft 113, and has a groove 12 inside.
The hole-shaped attachment with the number 0 formed therein is used by being inserted into the part 121, and the attachment is a fitting formed of a spring-like plate as a member for fitting into the groove 120 of the part 121. It has a mating member 123. A string 129 of the operating member 111 is attached to the arm 109 to which the fitting member 123 is attached.
Two coupling grooves 125 are formed to engage with the string 129, and two tub-shaped guides 127 are attached to guide the string 129.

A stopper 130 is provided on the outer periphery of the intake pipe 103 near the mounting portion 121 to limit the amount of rotational operation of the arm 109 and prevent the throttle valve 105 from opening beyond a predetermined degree. There is.

In the linkless throttle valve control device described above, the arm 109 is coupled to the mounting portion 121 in the direction of arrow J, the string 129 of the operating member 111 is passed through the coupling groove 125, and the guide 127, the throttle valve 10 can be operated by the operating member 111 from inside the vehicle.
5 can be opened and closed. That is, arm 109
The throttle shaft 113 coupled to is rotated in the direction of the arrow by pulling the string 129 in the direction of the arrow.
By pulling 9 in the direction of arrow M, it rotates in the direction of arrow N. Therefore, in addition to being able to run the vehicle when the linkless throttle valve 101 is no longer operated by the actuator 107 as in the first embodiment, the arm 109 of this embodiment can be installed by inserting it into the mounting portion 121. Since it is possible to connect the throttle shaft 113 with only the linkless throttle valve 113, the vehicle can be quickly driven when the linkless throttle valve 101 is abnormal. Furthermore, since a stopper 130 is provided to prevent the arm 109 from rotating too much and limit the throttle opening, it is possible to prevent problems such as sudden start due to careless operation of the throttle valve 105. Although this is an example of operation, the present invention is not limited to this, but the string 29, 129 can be connected to an accelerator pedal, etc., and the arm 9, 109 can be operated according to the amount of depression of the accelerator pedal. You can.

Although the present invention has been described above with reference to several embodiments, the present invention is not limited thereto and may be modified without departing from the gist of the present invention.

[Effects of the Invention] With the linkless throttle valve control device of the present invention, the throttle valve can be directly driven by operating the driving member using the operating member from within the vehicle interior. This allows the throttle valve to be opened and closed regardless of the operating state of the actuator, so even if the actuator fails and stops operating, or if the actuator operates abnormally due to a controller failure, etc. This provides an extremely excellent effect in that the vehicle can be driven by directly controlling the opening and closing of the valve. As a result, the limp-boom resistance and reliability of a vehicle equipped with the linkless throttle valve control device of the present invention are significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of a linkless throttle valve control device of the present invention, FIG. 2 is a perspective view showing a second embodiment, and FIG. 3 is a sectional view showing the configuration of a conventional example. be. 1.101...Linkless throttle valve 3.10
3... Intake pipe 5.105... Throttle valve 7.107... Actuator 9.109... Arm 11.111... Operation member

Claims (1)

[Scope of Claims] A control device for a linkless throttle valve in which a throttle valve that adjusts the amount of air supplied to an internal combustion engine is driven by an actuator, wherein a driving member directly connected to the throttle valve is provided outside the intake pipe, It has a tip that can be freely engaged and detached from the drive member, and when engaged,
A control device for a linkless throttle valve, comprising an operating member that allows a driver to manually operate the throttle valve from inside a vehicle interior.