JPH02102330A - Throttle valve controlling device - Google Patents

Abstract

PURPOSE:To improve a fail safe reliability at the time of a failure of a controller for a throttle valve controlled by an actuator by disposing a torque one-way means between a clutch inner on the throttle valve shaft side and a clutch outer on the accelerator pedal side. CONSTITUTION:A motor is installed at a throttle shaft 3 followed by a throttle valve 2 installed in a throttle chamber 1 through a speed reducer 4, and an accelerator pedal 8 and a return spring 9 are provided at an outer clutch 6 having an accelerator wire 7 between them. A bearing 10 is put between the throttle chamber 1 and the clutch outer 6, and a torque one-way means (of a retainer 11, spring shaft 12, and fixing pin 13) is installed with the retainer 11 inserted into the clutch outer 6. A roller 17 bites a wedge-like space formed by the clutch outer 6 and a clutch inner 14 by rotation of the clutch outer 6, thereby a torque is transmitted to the clutch inner 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automobile control device, and particularly to a throttle control system suitable for preventing engine runaway when a throttle actuator control device fails and for self-driving after failure. Regarding equipment.

[Conventional technology]

Conventional devices related to this type of device include, for example, Japanese Patent Application Laid-open No. 6
As described in No. 1-286547, the throttle valve was controlled by a throttle actuator.

[Problem to be solved by the invention]

The above-mentioned conventional technology has a problem in that self-blade travel is impossible if the throttle actuator control device or the like fails.

An object of the present invention is to enable automatic blade running after failure.

[Means to solve the problem]

The above purpose is that torque is not transmitted from the clutch inner to the clutch outer, and vice versa. One-way means of transmitting torque (springs, retainers, rollers, fixing pins)
This is achieved by providing

[Effect]

When the throttle actuator control device malfunctions, first, the power to the throttle actuator is cut off.

When you release the accelerator pedal, the clutch outer rotates due to the return spring force, and the retainer is stopped due to the spring force, so the rollers bite into the wedge space formed by the clutch outer and clutch inner, and torque is transmitted to the clutch inner. , minimize the amount of air sucked into the engine. Also, when the accelerator pedal is depressed, the clutch outer rotates in the opposite direction, and the spring applies frictional torque to the retainer, so the retainer stops, and the rollers are removed from the wedge space they had been wedged in and moved to the opposite side. Fits into a wedge space. As a result, fail-safe (engine runaway prevention, self-blade running) is made possible in the event of a failure of the control device.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. Throttle valve 2 attached to throttle chamber 1
A speed reducer 4 and a motor 5 are provided on a throttle shaft 3 with a speed reducer 4 and a motor 5. The outer clutch 6 has an accelerator wire 7
An accelerator pedal 8 and a return spring 9 are provided and interlock with each other. Further, a bearing 10 is provided between the throttle chamber 1 and the clutch outer 6 to improve sliding. 1- As one-way means (retainer 11, spring ring 1-2, fixing pin 13), the retainer 11 enters into the clutch outer 6, the spring transfer 12 enters the retainer 11, and the spring ring 12 is fixed to the fixing pin 13. Ru. Further, the clutch inner 14 is integrated with the throttle shaft 3, fixed with a nut 15, and further has a throttle sensor 16 attached thereto.

FIG. 2 shows a diagram of the operating principle. When the clutch outer G rotates, the retainer 11 is stopped by the spring ring 12, so the roller 17 moves between the clutch outer 6 and the clutch inner]
Clutch inner 1 bites into the wedge space formed by 4.
4 to transmit 1-lux. During rotation, the retainer 11 and the spring support 12 are in sliding contact. When the clutch outer 6 is rotated in the opposite direction, a frictional torque is applied to the retainer 1 by the spring 12, so the retainer 11 is raised, and the roller 7 is removed from the wedge space it had been wedged in, making it difficult to enter the wedge space on the opposite side. It's crowded.

When the clutch inner 14 is rotated, the retainer 11 is stopped by the friction torque generated by the spring support 12, so the roller 1
7 does not revolve but rotates on its axis. Therefore, the roller 17 does not bite into the wedge space, the clutch inner 14 idles, and no torque is transmitted to the clutch outer 6.

Further, in this method, the force of the return spring 9 shown in FIG. 1 is made larger than the frictional force between the spring support 12 and the retainer 11.

FIG. 3 shows a diagram of a fail-safe mechanism using an electromagnetic clutch. Clutch inner 1 directly connected to throttle shaft 3
By winding a coil 19 around 8 and supplying current, the mechanism is integrated with the clutch outer 2o. Further, the clutch outer 2o is supported by a bearing 21 and a neck 1-15.

Figure 4 shows a failsafe mechanism diagram using a solenoid. Attach the solenoid 24 to the clutch outer 22 with the bolt 23
is fixed. After the actuator fails, the solenoid 24 is turned on, the clutch inner 25 is fixed to the clutch outer 22, and the clutch inner 25 is moved by the operation of the accelerator pedal 8. In addition, the clutch outer 22
operates while being supported by the support section 26 during normal operation.

FIG. 5 is a diagram of a fail-safe mechanism using a pawl.

The clutch outer 27 is provided with a fully closing pawl 28 and a limp hole pawl 29.

FIG. 6 is a failure detection block diagram. The accelerator opening detection means detects the accelerator opening, and the throttle opening calculation means (A) calculates the slot! - Calculate the throttle opening degree 6 Then, the throttle opening detection means detects the actual throttle opening degree, and the calculated throttle opening degree is compared with the deviation detection means. If the deviation is less than 1, the value of a: is normal, but if it is less than 2, the value of a certain residence, it is considered to be abnormal, and the warning light, nails, etc. notification, turns off the motor power, and prevents the engine from running out of control. Thereafter, the minimum air amount confirmation means confirms whether the throttle valve is in the fully open position, and if it is fully open, the quasi-safety means is turned on to enable self-blade travel.

FIG. 7 is a diagram of malfunction avoidance means when a large torque is applied to the motor during normal operation of the throttle actuator control device. The contact detection means detects whether the clutch inner contacts the clutch outer, and if the contact occurs, the torque amplification means increases the driving torque of the motor.
Drive the clutch outer with the clutch inner. At that time, input the signal from the throttle opening calculation means (A),
The throttle opening degree after the torque expansion is made to match the throttle opening degree calculation means (B), and is outputted to the motor via the drive circuit.

FIG. 8 is a detailed diagram of the contact detection means. (2) is the case of FIGS. 3, 4, and 5. clutch inner lever 30
This is the principle that when the clutch outer lever 31 is about to come into contact with the clutch outer lever 31, the switch 32 is turned on and the torque increasing means is operated. ■ is the case in Figure 1. During normal operation of the actuator control device, when the clutch outer 6 rotates to the right, the roller 17 tries to enter the wedge space, so it comes into contact with the switch 32, and the torque amplification means operates, causing torque to be transmitted to the clutch inner 14. prevent.

FIG. 9 is a diagram showing a means for increasing the torque of the DC motor. A is a torque-rotation speed diagram. B is a time-voltage diagram. During normal operation, pulse control is performed as shown in B■, and the motor is driven such that a small torque is required, and when contact occurs, control is performed as shown in B■ to increase the torque.

FIG. 10 is a diagram of a means for increasing the torque of the stepping motor. A indicates 1-phase excitation, and B indicates 1-2 phase excitation.

During normal operation, one-phase excitation takes large steps like C to reduce torque and improve responsiveness. and,
When contact occurs, change to 1-2 phase excitation to improve torque and overcome return spring force.

FIG. 11 is a system configuration diagram. In the intake pipe 33,
A failsafe means 34, a throttle valve 35, a motor 36, an injector 37, and an air flow meter 38 are provided. The accelerator pedal 39 is provided with an accelerator opening sensor 40 and a pedal force gauge 41, and a signal is input to a control unit 42. Furthermore, an air flow meter 38, a wheel speed sensor 43, a shift position sensor 44
, signals from various switches are input. Then, the output is outputted to the drive circuit 45, the injector operation circuit 46, and the solenoid 47, and each actuator is driven.

ISC (Idle 5peed Control)
In this case, since the resolution can be improved by the torque enlarging means shown in FIG. 10, ISC becomes possible. Cruis
With eCantrol, similar torque expansion means allow
This is possible because the clutch outer can be operated.

Furthermore, the signal from the wheel speed sensor 43 enables traction control. In addition, the shift position sensor 44
With this signal, the shock during gear shifting can be alleviated by the engine output.

FIG. 12 is a diagram of the control means at the time of starting. At the time of starting, there is a possibility that the throttle valve 35 may not be moved by the motor 36 due to icing, stick, etc., so a solenoid valve 47 is operated with the ignition turned on before starting, and a diaphragm 48 prevents the stick, etc.

FIG. 13 is a driver intention control diagram. An acceleration pattern is recognized by a driver intention detecting means such as the pedal force needle 41 in FIG. 11, a throttle opening calculating means (C) calculates a throttle opening, and the motor is operated via a drive circuit.

For example, (]]), the signal of the pedal force meter is A.

The acceleration patterns B and C are recognized, and the longitudinal acceleration G is also known, so the throttle opening is A.

B and C are determined. At this time, the vibration of the vehicle body differs depending on the method of acceleration, so after the throttle valve is suddenly opened, the throttle valve is opened again to reduce the acceleration surge.

〔Effect of the invention〕

According to the present invention, the fail-safe reliability in the event of a failure of the throttle actuator control device is increased, and furthermore, it is possible to perform self-driving after the failure of the control device, making it possible to apply the electronically controlled throttle to an actual vehicle. .

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a diagram of the operating principle, Fig. 3 is a diagram of a fail-safe mechanism using an electromagnetic clutch, and Fig. 4 is a diagram of a fail-safe mechanism using a solenoid 1-. , Fig. 5 - Safety mechanism diagram using claws, Fig. 6
The figure is a failure detection block diagram, Figure 7 is a diagram showing malfunction avoidance means, Figure 8 is a detailed diagram of contact detection means, Figure 9 is a diagram showing DC motor torque expansion means, and Figure 10 is a diagram showing stepping motor torque expansion. 11 is a system configuration diagram, FIG. 12 is a diagram showing the starting control means, and FIG. 13 is a driver intention control diagram. 2... Throttle valve, 3... Throttle shaft, 5
...Motor, 6...Clutch outer, 7...Accelerator wire, 8...Accelerator pedal, 9...Return spring, 11...Retina, 12...Spring shaft,
13...Fixing pin, 14...Clutch inner.

Claims (1)

[Claims] 1. In a device that controls the amount of intake air using a throttle actuator (electronically controlled throttle), a clutch inner provided on a throttle shaft that interlocks with the throttle actuator, an accelerator pedal, a return spring, and an accelerator wire. What is claimed is: 1. A throttle valve control device comprising: a clutch outer that operates in the same manner; and a torque one-way means that transmits torque from the clutch outer to the clutch inner without transmitting torque from the clutch inner to the clutch outer. 2. In claim 1, there is provided a torque increasing means for avoiding malfunction when a large torque is applied to the throttle actuator when the throttle actuator control device is operating normally; What is claimed is: 1. A throttle valve control device comprising: contact detection means for detecting whether the throttle valve is open; and throttle opening calculation means for preventing erroneous throttle opening control by increasing torque. 3. In a device that controls the amount of intake air using a throttle actuator (electronically controlled throttle), a driver intention detection means for detecting the driver's intention, and a throttle opening calculation means for outputting a throttle opening corresponding to the above intention are provided. A throttle valve control device characterized by being provided.