KR20160087095A - The apparatus and mechanisms those control the vehicle's output by an accelerator pedal and a brake pedal connectively to prevent the sudden unintended acceleration - Google Patents

Abstract

The present invention relates to a method and an apparatus for preventing the sudden unintended acceleration of a vehicle. A pressure switch is installed in a brake pedal, and a pressure limit switch is installed in an accelerator pedal. The pressure switch and the pressure limit switch are connected to brake lights in parallel. A control device is installed in the middle part of a path from an electronic control unit (ECU) to a throttle motor and a throttle valve to control the pressure switch and the pressure limit switch by preparing for the malfunction of the ECU due to the internal or external influence of the vehicle and the possibility of the mal-operation of a driver. Thus, the present invention prevents the sudden unintended acceleration caused by the malfunction of the ECU and fundamentally prevents the sudden unintended acceleration caused by the mal-operation of the driver.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an output control method and apparatus for a vehicle in which an accelerator pedal and a brake pedal are linked to prevent a sudden start-up and reduce fuel consumption,

An electronic vehicle control for controlling an output by an ECU (Electronic Control Unit). In the case of an internal combustion engine, electronic throttle control (Throttle-by-wire) control.

ECU, ETC, electronic Excel pedal, electronic throttle valve, electronic brake pedal.

An object of the present invention is to prevent a sudden accident. In order to achieve this goal, first of all, you should ask, "Why does the hurry take place and what exactly is it?" To get the answer, you need to look at the state of the car and the driver when a sudden jump occurs.

First, the state of the car is suddenly the car is in the output state because the ECU has turned the throttle motor to open the throttle valve to the maximum.

So what about the status of the driver? A sudden unintended acceleration means that the driver is unintentional. It was not intended, but the car was speeding. The driver will then hurry the car under his control. The results are as follows. If you step on the brake pedal exactly as intended, or step on the brake pedal in an embarrassed situation, you may accidentally step on the pedal. If you press the brake pedal exactly first, the car will slow down or stop as you intended. However, for some reason, even if the driver stepped on the brake, the output of the car returned to the high speed, which exceeded the detent of the brake and continued to drive. It is a situation that many drivers who have experienced a sudden accident claim. That the vehicle was out of control. It is because of vehicle failure.

The next time you press the pedal instead of the brake pedal panic. The ending is one, it results in an accident. The sea that automakers claim is the cause of every sudden accident. In other words, it is natural for a car to run because the driver stepped on Excel instead of braking. Tea makers seem to be the cause of the rapidity.

The present invention is based on the assumption that both of the vehicle malfunction and the driver mistake are caused, and in each case, a method of preventing a sudden accident is searched.

Measures to prevent sudden emergence due to vehicle failure are as follows.

Electronic devices are likely to cause malfunctions due to various environmental factors such as electromagnetic waves as well as internal problems such as overuse, abrasion, and program errors. For that reason, the ECU that controls the vehicle may also malfunction. For some reason, the ECU malfunctions and sudden flashes occur when the engine increases its output even though the driver has not intentionally and unintentionally opened the throttle valve and this force has opened the throttle valve.

The solution to this is to prevent the throttle valve from opening through the ECU and its separate device, even if the ECU malfunctions and causes the throttle motor to turn or turn, if this is not what the driver intended.

However, the problem is how to find out whether the ECU command to open the throttle valve is intended by the driver. This should be judged by the operation performed by the driver. If the driver presses the accelerator pedal and the ECU opens the throttle valve to open the throttle valve and the ECU has opened the throttle valve despite the fact that the throttle valve has been pushed or the brake pedal has been pressed, will be. The solution is to detect when the driver steps off the pedal or presses the brake pedal, and controls the throttle valve independently of the ECU.

The following are cases of operator error.

If you step on the brake pedal to stop the car from decelerating, there is a sudden stoppage even if you accidentally step on the pedal. When the driver presses the accelerator pedal, it is natural for the ECU to turn the throttle motor and drive the car. But it's the driver's fault, should I let it crash?

The solution can be drawn from the driver's behavioral analysis.

The driver becomes very embarrassed if the vehicle moves unintentionally. The behavior at this time appears different from usual. When you step on the brake pedal to stop it and the car pops up, the driver pushes the pedal even harder. I will give you everything you need. The solution is to detect this unusual behavior and close the throttle valve independently of the ECU.

The following is a systematic view.

When the driver releases his / her foot from the accelerator pedal, all cars enter the idling state. When the pedal is depressed, the ECU turns the throttle motor to open the throttle valve as much as the pedal is depressed. . However, if the ECU malfunctions and the throttle motor is turned higher than when the pedal is depressed, the driver is urged to brake the vehicle by pressing the brake quickly. The driver presses the brake pedal. Even if the ECU continues to send erroneous information, regardless of the ECU, the independent device must close the throttle valve to allow the engine to reach its minimum output.

Furthermore, even when the driver presses the accelerator pedal instead of the brake pedal, the throttle valve can be completely closed regardless of the command of the ECU to return the engine output to the minimum state.

If you step on the brakes to brak down the car to braking the car, the driver is more embarrassed and unintentional power is given to the foot to step on. In this case, the force to step on the Excel pedal is several times faster than normal pull down. This emergency force must be sensed and the throttle valve must be closed separately from the ECU.

The present invention prevents the high output of the vehicle due to the malfunction of the ECU caused for any reason, and also prevents the sudden accident caused by the malfunction of the driver. In addition, the driver does not want to add power to the car, such as decelerating or stopping, so that when the foot is placed on the brake pedal, the vehicle is idled and automatically saves fuel.

[Fig. 1] is a circuit diagram of a throttle motor control device linked to an excel pedal and a brake pedal in an accelerator pedal state.
[Fig. 2] is a circuit diagram of a throttle motor control device linked with an accelerator pedal and a brake pedal when the brake is operated.
[Fig. 3] shows a schematic diagram of a throttle motor control device in which an accelerator pedal is pressed by a driver when the driver depresses the brake pedal.
[Fig. 4] shows a schematic diagram of the throttle motor control system in which an excel pedal and a brake pedal are operated when both the excel pedal and the brake pedal are pressed while the ignition is turned on.
[Fig. 5] Illustration of the valve opening state of the throttle assembly of the throttle assembly of the throttle valve and the brake pedal interlocking valve
[Fig. 6] Exercise pedal and brake pedal interlock valve shaft Clutch throttle assembly Valve closing state
[Fig. 7] Acceleration of the throttle motor shaft with the accelerator pedal and the brake pedal The valve opening state of the throttle assembly
[Fig. 8] Accelerating the throttle motor shaft clutch pedal with brake pedal valve Closed state of the throttle assembly

In order to prevent the sudden rise of the engine output due to the sudden increase of the engine output, which is not intended by the driver, when the driver depresses the brake pedal or the brake pedal but not the brake pedal, the throttle valve is closed separately from the ECU, Only the air should be sent to the engine to reach the minimum output.

The brake pedal pressure switch (symbol 050) and the excel pedal pressure limit switch (symbol 060) are attached to the brake pedal and the excel pedal, respectively, and are connected to the throttle valve separately from the ECU (symbol 020) , The throttle valve is controlled by turning on and off these two switches in accordance with the driver's depression state. [Fig. 1, Fig. 2, Fig. 3]

Instead of the brake pedal pressure switch (symbol 060), a pressure switch (symbol 090) may be attached to the pedal to allow the throttle valve to be controlled by sensing when the driver is stepping on the pedal. This method is also substantially similar in method and effect to the brake pedal pressure switch. [Figure 4]

The way to control the throttle valve depends largely on the position applied to close the throttle valve with the signal received from the brake pedal pressure switch (symbol 050), the excel pedal pressure switch (symbol 090) and the excel pedal pressure limit switch (symbol 060) However, the present invention implements both of them and selectively adopts one or both of them.

The throttle valve

The first method is to control between ECU (symbol 020) and throttle motor (symbol 040).

[Fig. 1], [Fig. 2], [Fig. 3] and [Fig. 4] will be described below with a circuit diagram depicting a method of controlling between an ECU and a throttle motor.

A brake pedal pressure switch (symbol 050) that senses when the driver stepped on the brake pedal and connects the current; a pedal pressure switch (symbol 050) that connects the current pedal when the driver presses the pedal, Switch (symbol 060), the brake pedal pressure switch (symbol 050) or the excel pedal pressure switch (symbol 090) and the excel pedal pressure limit switch (symbol 060) between the ECU and the throttle motor are open, (Symbol 030) to switch off or connect the current sent from the ECU (symbol 020) to the throttle motor (symbol 040) depending on whether the electromagnet (symbol 031) is activated or deactivated . These devices are connected to the battery (symbol 010), the brake lamp (symbol 070) and the wire (symbol 080) as shown.

The mechanism of this system is as follows. When the driver turns on the engine, the current of the battery (symbol 010) runs through the ECU (symbol 020) (according to the value of the ECU) and operates the throttle motor (symbol 040).

1 shows a state in which a normally closed throttle motor control switch (symbol 030) is pressed by an ECU (symbol 020) and a normally closed throttle motor control switch (symbol 030) in a state in which the driver depresses an excel pedal to move the vehicle while the vehicle is running. And a throttle motor (symbol 040) is connected. The throttle motor (symbol 040) is operated as instructed by the ECU (symbol 020) to open the throttle valve as much as it will be outputting the engine and the brake lamp (symbol 070) will be turned off.

[Fig. 2] shows a brake pedal pressure switch (symbol 050) that is normally opened (pressedly closed) is operated in a state in which the driver depresses the brake pedal to notify deceleration, stop, The current is flowed and the brakes (symbol 070) are turned on. At the same time, the normally closed throttle motor control switch (symbol 030) activates the electromagnet (symbol 031) to open the switch (current-flowedly open) Block current flow. Then, the throttle valve (symbol 040) does not operate even if the ECU (symbol 020) gives any instruction, so that the throttle valve closes and air is sucked only through the idling pass, and the engine becomes the minimum output state.

3 shows a state in which the driver erroneously depresses the brake pedal to decelerate or stop the vehicle, and the vehicle will accelerate or rapidly accelerate depending on the degree of depression of the accelerator pedal, contrary to the intention of the driver. When this happens, the driver becomes embarrassed and presses the accelerator pedal harder and harder. At this time, Normally Open, the pedal pressure limit switch (symbol 060) is closed at a pressure higher than the set value (Over-limitedly-pressedly closed), and the brake pedal lamp (symbol 070) is turned on The Normally Closed throttle motor control switch (symbol 030) switches off the flow of current (current-flowedly open) by activating the electromagnet (symbol 031). Then, the throttle valve (symbol 040) does not operate even if the ECU (symbol 020) gives any instruction, so that the throttle valve closes and air is sucked only through the idling pass, and the engine becomes the minimum output state.

Usually, the pressure limit of the pedal pressure limit switch (symbol 060) is set to be between approximately 100 kgf and 140 kgf, since the force of the brake pedal is fully down to the floor is 60 kgf for passenger car and 70 kgf for other heavy duty vehicle will be.

4 shows an example of an excel pedal pressure switch (symbol 090) which is normally closed when the driver releases his / her foot from the excel pedal (without depressing the brake pedal), when the driver depresses the excel pedal, (Normally Closed) throttle motor control switch (symbol 030), which is a normally closed current (symbol 031), is used to switch the electromagnet (symbol 031) of the switch, (Current-flowedly open) to block the flow of current. Then, the throttle valve (symbol 040) does not operate even if the ECU (symbol 020) gives any instruction, so that the throttle valve closes and air is sucked only through the idling pass, and the engine becomes the minimum output state.

The throttle valve

The second method is to redesign the structure of the throttle valve to cut off the power transmission between the throttle motor (symbol 140) and the throttle valve (symbol 160). Although the power can be dissipated in all the parts that transmit power between the throttle motor and the throttle valve, the present invention is advantageous in that it is most effective on space utilization, on the throttle motor axis (symbol 141) I have implemented two ways to disconnect.

5], [Fig. 6], Fig. 7, and Fig. 8 are realized by renewing the structure of the existing throttle assembly by controlling the throttle motor (symbol 140) The details are as follows.

5 and 6 are implemented by mounting a dog clutch (symbol 164 and symbol 165) on the throttle valve shaft (symbol 161) and mounting a solenoid (symbol 180) for controlling the dog clutch.

5 shows the throttle assembly when the driver is pressing the accelerator pedal. The ECU turns the throttle motor (symbol 140) according to the driver's degree of depression of the accelerator pedal, the rotational power of the throttle motor is the tension spring (symbol 167) To the throttle valve (symbol 160) through the dog clutch engaged by the force of the throttle valve (not shown). In other words, during normal operation, it is the same as the mechanism of the existing car.

FIG. 6 is a graph showing a relationship between a pedal stroke and a pedal stroke, when the driver depresses the brake pedal to operate the brake pedal pressure switch, and electricity is supplied through the solenoid-connected wire (symbol 181) (Symbol 186) connected to the solenoid, the current flows through the electromagnet (solenoid (symbol 180)) and the throttle valve coaxial shaft (symbol 166) (Symbol 165) is disengaged from the driven shaft clutch (symbol 164) to slide the gear sliding groove (symbol 168) backward, whereby the dog clutch engaged by the force of the tension spring (symbol 167) is loosened, The valve is closed by the spring (symbol 170) until the throttle valve (symbol 160) is caught by the throttle valve stop pin (symbol 122) to inject air into the engine only by the idling pass . This operation is performed separately from the ECU, so that the engine can be idled regardless of the instruction of the ECU, thereby preventing the ECU from suddenly starting up. Further, since the positioning sensor (symbol 190) reads the value of the positioning stick (symbol 163) and feeds back the closed value of the throttle valve to the ECU, there is an effect of correcting the error value of the ECU.

7 and 8 are implemented by mounting an electromagnet (solenoid) for operating the dog clutch and the dog clutch on the throttle motor shaft. The principle of operation is the same as that described in [Fig. 4] and [Fig. 5].

The symbols in FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are as follows.
010: Battery
020: ECU
030: Throttle motor control switch 031: Electromagnet
040: Throttle motor
050: Brake pedal pressure switch
060: Excel pedal pressure limit switch
070: Brake light
080: Wires
090: Excel pedal pressure switch
The symbols in FIG. 5 and FIG. 6 are as follows.
110: frame 120: throttle valve tube 121: throttle air passage 122: throttle valve stop pin
130: idling tube 131: idling air passage 132: idling air adjusting screw
140: Throttle valve drive throttle motor 141: Throttle motor shaft
150: Pinion gear 151: Reduction gear 152: Reduction gear shaft 153:
The valve mechanism includes a valve body having a valve body and a valve body, the valve body having a valve body,
170: Return spring 171: Spring ring
180: Electromagnet 181 Brake pedal pressure switch connection wire 182: Accelerator pressure limit switch connection wire
191: Positioning sensor
[Figure 7] The symbols in [Figure 8] are as follows.
110: frame 120: throttle valve tube 121: throttle air passage 122: throttle valve stop pin
130: idling tube 131: idling air passage 132: idling air adjusting screw
[0001] The present invention relates to a throttle valve, and more particularly,
150: Pinion gear 151: Reduction gear 152: Reduction gear shaft 153:
160: valve 161: valve drive shaft 162: valve retaining rivet 163: positioning stick
170: Return spring 171: Spring ring
180: Electromagnet 181 Brake pedal pressure switch connection wire 182: Accelerator pressure limit switch connection wire
190: Positioning sensor

Claims (7)

The ECU detects the extent to which the ECU pedal is depressed. In an automatic vehicle that adjusts the output of the vehicle, it is mounted on the brake pedal and is normally open (Normally Open). When the driver presses the pedal, (Symbol 050), and between the ECU 020 and the throttle motor 040 and is normally closed (normally closed), and when the brake pedal pressure switch is closed (ON), the ECU goes to the throttle motor (Symbol 030) for turning off the current to the vehicle to reach the minimum output state, and a wire (symbol 080) for connecting these two units to the brake lamp (symbol 070). And devices therefor. The ECU detects the extent to which the ECU pedal is pressed. In an automatic vehicle that adjusts the output of the vehicle, it is mounted on an excel pedal and is normally open (Normally Open). When the pedal is depressed by the driver over a predetermined force, It is installed between the ECU pedal pressure limit switch (symbol 060), the ECU and the throttle motor (symbol 040) and is connected in parallel with the brake, etc. Normally Closed Normally Closed When the pedal pressure limit switch is closed ON), a throttle motor control switch (symbol 030) that cuts off the current to the throttle motor from the ECU to bring the vehicle to the minimum output state, and a wire (symbol 080) that connects these two units Method and apparatus therefor. The ECU detects the degree of depression of the accelerator pedal. In an automatic vehicle that adjusts the output of the vehicle, it is mounted on an excel pedal and is normally closed (Normally Closed). When the driver presses the accelerator pedal, It is installed between the ECU and the throttle motor (symbol 040) and is connected in parallel with the brake light, normally closed (ON), when the foot pedal is released. (Normally Closed) When the Excel pedal pressure switch is closed (ON), the throttle motor control switch (symbol 030) which cuts off the current to the throttle motor from the ECU and brings the vehicle to the minimum output state, and the wire connecting these two units ) And a vehicle power control method and apparatus therefor. The ECU detects the extent to which the accelerator pedal is depressed. In an automatic vehicle that adjusts the output of the vehicle, the normally open brake pedal pressure switch (symbol 050), which is normally closed when the driver depresses the pedal The pedal pressure limit switch (symbol 060), which is mounted on the brake pedal and is normally open (Normally Open) when the driver depresses the pedal over a predetermined force, (Normally Closed), the brake pedal pressure switch is closed (ON), and the brake pedal pressure switch is closed (normally closed) Or a throttle motor control switch (symbol 030) that causes the ECU to switch off the current to the throttle motor to bring the vehicle to the minimum output state when the pedal pressure limit switch is closed (ON) And a wire connecting the three units (symbol 080). The ECU detects the degree of depression of the accelerator pedal. In an automatic vehicle that adjusts the output of the vehicle, it is mounted on an excel pedal and is normally closed (Normally Closed). When the driver presses the accelerator pedal, The pedal pressure switch (symbol 090), which is normally closed when the foot is released from the pedal, is normally open. Normally open, when the pedal is depressed by the driver over a predetermined force, the switch is closed The Excel Pedal Pressure Limit Switch (symbol 060) is mounted together with the Excel pedal and is installed between the ECU (symbol 020) and the throttle motor (symbol 040), connected in parallel with the brake, etc. and normally closed (ON) Normally Closed) When the Excel pedal pressure switch (symbol 090) is closed (ON) or the Excel pedal pressure limit switch (symbol 060) is closed, the current from the ECU (symbol 020) to the throttle motor To the minimum output state, The throttle motor control switch (symbol 030), and these three wires for connecting the unit to the vehicle power control characterized by the combination of (symbol 080), method and apparatus. In the case of an automatic vehicle in which an ECU sends a signal to a throttle motor to turn the throttle motor to open and close the throttle valve to adjust the engine output, a rotation from the throttle motor to the throttle valve on the rotation axis of the throttle valve And a solenoid and a tension spring that are connected in parallel with a power source such as a brake to control the clutch, and a tension spring. [5] and [6] In the case of an automotive vehicle that controls the engine output by opening and closing the throttle valve by sending a signal to the throttle motor to determine whether the ECU has responded to the throttle motor, the rotational power to the throttle valve is blocked And a solenoid and a tension spring which are connected in parallel with a power source such as a brake to operate the clutch. [7] and [8] The throttle valve assembly of [

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