KR102382089B1 - ABS-ASR brake device for vehicles - Google Patents

Abstract

An ABS-ASR braking device for a vehicle according to an embodiment of the present invention includes: a first air tank and a second air tank for storing compressed air, respectively; a brake pedal for controlling a flow rate of air discharged from the second air tank by a user's manipulation; a relay valve having an air supply port through which compressed air is introduced from the first air tank, a control port for varying an internal flow path according to pneumatic pressure, a delivery port through which internal air selectively flows out along the internal flow path, and an exhaust port; an ASR control valve having a first ASR port through which the compressed air of the first air tank is introduced, a second ASR port through which the compressed air is introduced from the brake pedal, and a third ASR port through which the compressed air is discharged; a first valve having a first port connected to the third ASR port, a second port connected to the control port, and a third port connected to an exhaust unit; and a second valve selectively transferring the air discharged from the delivery port to the braking unit. includes The present invention can simplify the configuration by reducing the number of exhaust parts and the number of solenoid valves.

Description

ABS-ASR brake device for vehicles

The present invention relates to an ABS-ASR braking system for a vehicle. Specifically, the present invention blocks the flow path between the master cylinder and the brake wheel cylinder and connects the flow path between the brake wheel cylinder and the air tank when performing an anti-slip operation, and controls one wheel to get out of the slip state when accelerating. It relates to an ABS-ASR braking system for a vehicle.

When the driver steps on the brake pedal, the brake system drives the brake unit by pneumatic pressure to generate braking force. If braking force is applied with a sudden high pressure above a certain speed, a sliding phenomenon occurs between the wheel and the road surface, which may cause a safety accident. In order to prevent this, the ABS brake system adjusts the pneumatic pressure applied to the brake unit to repeatedly increase or decrease the braking force so that the vehicle can be braked safely without slipping.

More specifically, in the pneumatic ABS brake system, when the driver presses the brake pedal to brake the vehicle, compressed air flows into each chamber through the air line and operates the brake to control the wheels of the vehicle. When the wheel is locked, slip occurs between the wheel and the road surface. To prevent this phenomenon, the ECU (Engine Control Unit) compares the vehicle speed and the wheel speed from the engine. transmit

The PCV, which receives the electrical signal from the ECU, blocks the flow of air flowing into the chamber connected to each wheel and prevents the wheel from locking by repeating the connection, so that the vehicle can be braked stably, which is the ABS function.

On the other hand, if the driver presses the accelerator brake pedal while one of the two driving wheels is placed in the ice or mud, the wheel placed in the ice or mud does not have friction with the road surface, and thus the corresponding wheel slips. In this state, all the driving force transmitted from the engine is transmitted to the wheel where the slip occurs and is lost, so that the vehicle cannot move forward. At this time, the ECU determines that slip is occurring on one wheel using the wheel speed information received from the wheel speed sensor, and transmits an electrical signal to the PCV connected to the corresponding wheel to brake the corresponding wheel, allowing the other wheel to receive driving power. It allows the vehicle to move forward, which is the ASR function. That is, the ASR is a device that prevents slip by braking one wheel on which slip occurs.

1 is a view showing an ABS-ASR braking device according to the prior art. Referring to FIG. 1 , the ABS-ASR braking device according to the prior art is connected to a brake pedal and an air tank to adjust air pressure according to a driver's operation, etc., and is connected to the relay valve 1 and the relay. It includes a first solenoid valve (2) that transmits the pneumatic pressure supplied from the valve (1) to the brake unit, and a second solenoid valve (3) and an ASR control valve (4) for discharging air from the brake unit to the exhaust unit.

In the ABS-ASR braking device according to the prior art, the first solenoid valve 2 and the second solenoid valve 3 are provided as many as the number of braking units, and the relay valve 1 and the second solenoid valve 3 Since each exhaust unit must be provided, the configuration is complicated, the production cost is increased, and the risk of failure is high.

1. Korean Patent Registration No. 10-0941810 (published on February 3, 2010)

1. Korean Patent Registration No. 10-0256856 (published on Feb. 25, 2000)

1. Korean Patent Registration No. 10-0311155 (published on September 24, 2001)

The present invention proposes a simplified structure of an ABS-ASR braking system for a vehicle so as to solve the problems of the conventional structure.

An ABS-ASR braking device for a vehicle according to an embodiment of the present invention includes an air tank for storing compressed air, respectively; a brake pedal for controlling a flow rate of air discharged from the air tank by a user's manipulation; a relay valve provided with an air supply port through which compressed air is introduced from the air tank, a control port for varying an internal flow path according to pneumatic pressure, a delivery port through which internal air is selectively discharged along the internal flow path, and an exhaust port; an ASR control valve having a first ASR port through which the compressed air of the air tank is introduced, a second ASR port through which compressed air is introduced from the brake pedal, and a third ASR port through which the compressed air is discharged; a first valve having a first port connected to the third ASR port, a second port connected to the control port, and a third port connected to an exhaust unit; and a second valve selectively transferring the air discharged from the delivery port to the braking unit. includes

In addition, the ASR control valve is a 3-way valve that communicates the first ASR port and the third ASR port or communicates the second ASR port and the third ASR port, and when driven in the ABS mode, the first The second ASR port and the third ASR port are communicated to apply the hydraulic pressure adjusted by the brake pedal to the first port, and when driven in the ASR mode, the first ASR port and the third ASR port are communicated to communicate the air The hydraulic pressure of the tank may be applied to the first port.

In addition, the first valve may be a 3-way valve that communicates the first port and the second port, or communicates the second port and the third port.

In addition, when driven in the normal braking mode, the ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port, so that the brake pedal transmits the operated pneumatic pressure to the control port, the relay valve discharges the air introduced into the air supply port to the delivery port, and the second valve is opened to discharge the air flowing into the delivery port into the second valve It can be transferred to the East.

In addition, when driven in the ABS maintenance mode, the ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port, so that the brake pedal transmits the operated pneumatic pressure to the control port, the relay valve discharges the air introduced into the air supply port to the delivery port, and the second valve is closed, so that the air discharged into the delivery port It can block transmission to the East.

In addition, when driven in the ABS exhaust mode, the first valve connects the second port and the third port to block the pneumatic pressure transmitted to the control port, and the second valve is opened to the brake unit The delivered air may be discharged to the delivery port, and the relay valve may discharge the air introduced into the delivery port to the exhaust port.

In addition, when driven in the ABS braking mode, the ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port, so that the brake pedal transmits the operated pneumatic pressure to the control port, the relay valve discharges the air introduced into the air supply port to the delivery port, and the second valve is opened to discharge the air flowing into the delivery port into the second valve It can be transferred to the East.

In addition, when driven in the ASR holding mode, the ASR control valve communicates the first ASR port and the third ASR port, and the first valve communicates the first port and the second port, so that the brake pedal Regardless of the operation, the air pressure of the air tank is transmitted to the control port, the relay valve discharges the air introduced into the air supply port to the delivery port, and the second valve is closed and flows out to the delivery port It is possible to block the transmitted air to the brake unit.

In addition, when driven in the ASR exhaust mode, the first valve connects the second port and the third port to block the pneumatic pressure transmitted to the control port, and the second valve is opened to the brake unit The delivered air may be discharged to the delivery port, and the relay valve may discharge the air introduced into the delivery port to the exhaust port.

In addition, when driven in the ASR braking mode, the ASR control valve communicates the first ASR port and the third ASR port, and the first valve communicates the first port and the second port, so that the brake pedal Regardless of the operation, the air pressure of the air tank is transmitted to the control port, the relay valve discharges the air introduced into the air supply port to the delivery port, and the second valve is opened and flows out to the delivery port The used air may be delivered to the brake unit.

In addition, a plurality of the brake unit and the second valve may be provided to correspond to the number of the wheels, and each of the plurality of second valves may transmit the air discharged from the delivery port to each of the plurality of eastern parts. .

The present invention having the above configuration can simplify the configuration by reducing the number of exhaust parts and the number of solenoid valves.

1 is a view showing an ABS-ASR braking device according to the prior art.
2 is a diagram illustrating an arrangement of an ABS-ASR braking device according to an embodiment of the present invention;
3 is a diagram illustrating the configuration of an ABS-ASR braking device according to an embodiment of the present invention.
4 is a view showing the configuration and operation of a relay valve according to an embodiment of the present invention.
5 is a view showing an external appearance of an ABS-ASR braking device according to an embodiment of the present invention;
6 is a diagram illustrating the configuration of an ABS-ASR braking device according to an embodiment of the present invention in a normal braking mode;
7 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ABS maintenance mode;
FIG. 8 is a diagram illustrating the configuration of an ABS-ASR braking system according to an embodiment of the present invention in an ABS exhaust mode; FIG.
9 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ABS braking mode;
10 is a diagram illustrating the configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ASR holding mode;
11 is a diagram illustrating the configuration of an ABS-ASR braking system according to an embodiment of the present invention in an ASR exhaust mode;
12 is a diagram illustrating the configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ASR braking mode;

Hereinafter, based on the accompanying drawings, the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

In addition, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor appropriately defines the concept of the term in order to best describe his invention. Based on the principle that it can be done, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

2 is a view showing an operating state of the ABS braking system according to an embodiment of the present invention, and FIG. 2 (a) is a view showing a state before braking, and FIG. 2 (b) is a view showing a state after braking. , FIG. 3 is a view showing the configuration of an ABS-ASR braking device according to an embodiment of the present invention, FIG. 4 is a view showing the operation of a relay valve according to an embodiment of the present invention, FIG. 4 (a) is When the ABS maintenance mode, ASR maintenance mode, ABS stop mode or ASR stop mode, it is a view showing the operation of the relay valve according to an embodiment of the present invention, Figure 4 (b) is ABS exhaust mode or ABS exhaust mode At this time, it is a view showing the operation of the relay valve according to an embodiment of the present invention, Figure 5 is a view showing the appearance of the ABS-ASR braking device according to an embodiment of the present invention.

2 to 5 , the ABS-ASR braking device 10 according to the present invention controls the front wheel brake unit 25 that brakes the front wheel 20 of the moving means, or the rear wheel 30 of the moving means It is possible to control the rear wheel braking unit 35 for braking.

The ABS-ASR braking device 10 includes a relay valve 100 , an ASR control valve 150 , a first solenoid valve 200 , and a second solenoid valve 250 .

The relay valve 100 includes an air supply port 110 , a control port 120 , a delivery port 130 , and an exhaust port 140 . The air supply port 110 and the control port 120 may be understood as an 'input port' through which air is input to the relay valve 100 , and the exhaust port 140 is located inside the relay valve 100 . It can be understood as an 'output port' that outputs air. The delivery port 130 may be understood as an 'input port' or an 'output port' according to a mode to be described later.

That is, some air of the air tank 40 is introduced into the air supply port 110 , and another partial air of the air tank 40 is delivered to the control port 120 according to the ABS mode/ASR mode. . Meanwhile, according to the degree of pressurization of the control port 120 , the air inside the relay valve 100 is discharged to the delivery port 130 or the exhaust port 140 .

Here, the ABS mode may be understood as a concept including an ABS maintenance mode, an ABS exhaust mode, and an ABS braking mode, and the ASR mode is understood as a concept including an ASR maintenance mode, an ASR exhaust mode, and an ASR braking mode can be

Referring to FIG. 4 ( a ), when the ABS-ASR braking device 10 is driven in the ABS maintenance mode, the ASR maintenance mode, the ABS stop mode, or the ASR stop mode, the air introduced into the control port 120 is It has a constant pressure and moves the plunger 11 by pressing it downward. When the plunger 11 is moved to the lower side, the valve in 12 is moved to the lower side so that the air supply port 110 and the delivery port 130 are communicated, and the air supply port 110 is The introduced air is discharged through the delivery port 130 . Meanwhile, referring to FIG. 4 (b), when the ABS-ASR braking device 10 is driven in the ABS exhaust mode or the ABS exhaust mode, the inflow of air into the control port 120 is blocked and the plunger 11 is moved upwards. When the plunger 11 is moved upward, the delivery port 130 and the exhaust port 140 communicate through a valve 12, and the air introduced into the delivery port 130 is exhausted. It is discharged through the port 140 .

The air discharged to the delivery port 130 is delivered to a second solenoid valve 250 to be described later, and the air discharged to the exhaust port 140 is discharged to the outside through the exhaust unit 60 .

The ASR control valve 150 includes a first ASR port 151 , a second ASR port 152 and a third ASR port 153 . Air directly from the air tank 40 through the first ASR port 151 is introduced, and the air from the air tank 40 passes through the brake pedal 50 through the second ASR port 152 and then flows in , and the third ASR port 153 is connected to a first solenoid valve to be described later. It is connected to the first port 201 of 200 . The third ASR port 153 may be understood as an 'output port', and the first ASR port 151 and the third ASR port 153 may be understood as an 'input port'.

The ASR control valve 150 may be a three-way valve, and in a state in which the current is OFF (ABS mode), the second ASR port 152 and the third ASR port 153 are connected, and the current In an ON (energized) state (ASR mode), the first ASR port 151 and the third ASR port 153 may be connected. At this time, it can be understood that the state in which the current is OFF and the second ASR port 152 and the third ASR port 153 are connected is an open state, and the current is turned on to the first ASR port 151 and the third ASR port. A state in which (153) is connected can be understood as a closed state. A detailed description of the operation of the ASR control valve 150 will be described later.

The first solenoid valve 200 includes a first port 201 , a second port 202 and a third port 203 . Air is introduced from the ASR control valve 150 through the first port 201, the second port 202 is connected to the control port 120, and the third port 203 is the vessel It communicates with the base 60 .

The first solenoid valve 200 may be a three-way valve, and in a state in which the current is OFF, the first port 201 and the second port 202 are connected, and the current is ON (energined) In this state, the second port 202 and the third port 203 may be connected. At this time, it can be understood that the state in which the current is OFF and the first port 201 and the second port 202 are connected is an open state, and the current is ON so that the second port 202 and the third port 203 are connected to each other. A connected state can be understood as a closed state. A detailed description of the operation of the first solenoid valve 200 will be described later.

The second solenoid valve 250 may be a de-energined to open valve, and includes an input port 251 and an output port 252 . That is, the second solenoid valve 250 connects the input port 251 and the output port 252 in a state in which the current is OFF, and the input port 251 and the output in a state in which the current is ON (energized). Port 252 may be blocked.

The input port 251 introduces the air discharged from the delivery port 130 of the relay valve 100 into the second solenoid valve 250 , and the output port 252 is the second solenoid valve 250 . ) of the internal air is discharged to the brake unit.

The ABS-ASR braking device 10 may be composed of one relay valve 100 , one ASR control valve 150 , one first solenoid valve 200 and two second solenoid valves 250 . In addition, the second solenoid valve 250 may be disposed on both sides of the relay valve 100 . That is, the air discharged from the delivery port 130 of the relay valve 100 may be branched and introduced into the input port 251 of the two second solenoid valves 250 .

Referring to FIG. 5 , the output port 252 of the second solenoid valve 250 may be disposed on both sides of the ABS-ASR braking device 10 , and at the center of the ABS-ASR braking device 10 , The relay valve 100 , the ASR control valve 150 and the first solenoid valve 200 may be provided. In more detail, the control port 120 of the relay valve 100 may be provided on the upper surface of the central part, the exhaust part 60 may be provided on the lower surface of the central part, and the relay valve on the front surface of the central part An air supply port 110 of 100 may be provided.

However, the arrangement of the ports of the ABS-ASR braking device 10 as described above is not limited to the above description, and may be easily changed according to a space in which the ABS-ASR braking device 10 is disposed.

6 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in a normal braking mode.

Referring to FIG. 6 , when the ABS-ASR braking device 10 is driven in the normal braking mode, the ASR control valve 150 , the first solenoid valve 200 , and the second solenoid valve 250 are OFF. . That is, the ASR control valve 150 , the first solenoid valve 200 , and the second solenoid valve 250 are all opened. In other words, the second ASR port 152 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the second port ( 202 communicates with each other, and the input port 251 and the output port 252 of the second solenoid valve 250 communicate with each other.

Since the ASR control valve 150 is in an OFF state (open state), as the user operates the brake pedal 50, the air in the air tank 40 moves to the second ASR port ( 152), and the internal air inside the ASR control valve 150 is supplied to the first port 201 of the first solenoid valve 200 through the third ASR port 153.

In addition, since the first solenoid valve 200 is in an OFF state (open state), the air introduced into the first port 201 is discharged to the second port 202 . The air discharged through the second port 202 may apply a predetermined pressure to the control port 120 .

As a certain pressure is applied to the control port 120 , the air supply port 110 communicates with the delivery port 130 , and the air inside the air tank 40 is supplied to the air supply port 110 . And passing through the delivery port 130, it is supplied to the input port 251 of the second solenoid valve (250). At this time, since the second solenoid valve 250 is in an OFF state (open state), the air introduced into the input port 251 is transferred to the brake unit through the output port 252 . In the general braking mode, the pneumatic pressure of the air tank 40 is transmitted to the braking unit according to the operation of the braking pedal 50 to generate braking force.

7 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ABS maintenance mode.

Referring to FIG. 7 , when the ABS-ASR braking device is driven in the ABS maintenance mode, the ASR control valve 150 and the first solenoid valve 200 are in an OFF state, and the second solenoid valve 250 is turns ON. That is, the second ASR port 152 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the second port 202 of the first solenoid valve 200 are connected. ) communicates, and the input port 251 and the output port 252 of the second solenoid valve 250 are blocked.

Since the ASR control valve 150 and the first solenoid valve 200 are in an OFF state (open state), the pneumatic pressure of the air tank 40 is transmitted to the control port 120 according to the operation of the brake pedal 50 , , the air supply port 110 and the delivery port 130 communicate with each other, and the pneumatic pressure of the air tank 40 is transmitted to the input port 251 of the second solenoid valve 250 .

When the ABS-ASR braking device 10 is in the ABS maintenance mode, the pneumatic pressure of the air tank 40 is maintained up to the input port 251 of the second solenoid valve 250, but the second solenoid valve 250 is turned on. (closed state), the pneumatic pressure of the air tank 40 is not transmitted to the braking unit. Accordingly, the braking unit does not generate a braking force.

In the ABS maintenance mode, regardless of the operation of the brake pedal 50 , the brake force is reduced by momentarily blocking the pneumatic pressure transmitted to the brake unit, thereby preventing the wheel from being locked. On the other hand, when the ABS-ASR braking device 10 is in the ABS maintenance mode, the ECU (Engine Control Unit) considers the rotation speed of the wheel, the slip rate of the vehicle, etc. It is possible to determine whether to switch to the braking mode.

8 is a diagram illustrating the configuration of an ABS-ASR braking system according to an embodiment of the present invention in an ABS exhaust mode.

Referring to FIG. 8 , when the ABS-ASR braking device is driven in the ABS exhaust mode, the first solenoid valve 200 is in an ON state, and the ASR control valve 150 and the second solenoid valve 250 are OFF state. That is, since the ASR control valve 150 is in an OFF state (open state), as the user manipulates the brake pedal 50 , the air in the air tank 40 moves to the second ASR of the ASR control valve 150 . The air flows into the port 152 , and the internal air inside the ASR control valve 150 is supplied to the first port 201 of the first solenoid valve 200 through the third ASR port 153 . However, since the first solenoid valve 200 is in an ON state (closed state), the first port 201 does not communicate with the second port 202, and the second port 202 and the third port ( 203) is communicated. Since the third port 203 communicates with the exhaust unit 60 , the pneumatic pressure applied to the control port 120 decreases.

As the pneumatic pressure acting on the control port 120 decreases, the delivery port 130 and the exhaust port 140 communicate with each other as shown in FIG. 4(b), and the air supply port 110 is is blocked

On the other hand, since the second solenoid valve 250 is in an OFF state (open state), the pneumatic pressure applied to the braking unit is discharged to the exhaust unit 60 through the delivery port 130 and the exhaust port 140 .

In the ABS exhaust mode as described above, the air inside the ABS-ASR package may be discharged to the outside to remove the pneumatic pressure transmitted to the braking unit. On the other hand, the ABS exhaust mode may be understood as a 'reduced pressure mode' because the air pressure delivered to the braking unit is reduced.

9 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ABS braking mode.

9, when the ABS-ASR braking device 10 is driven in the ABS braking mode, the ASR control valve 150, the first solenoid valve 200, and the second solenoid valve 250 are turned off. do. That is, the ASR control valve 150 , the first solenoid valve 200 , and the second solenoid valve 250 are all opened. In other words, the second ASR port 152 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the second port ( 202 communicates with each other, and the input port 251 and the output port 252 of the second solenoid valve 250 communicate with each other.

That is, the ASR control valve 150 , the first solenoid valve 200 , and the second solenoid valve 250 operate in the same manner as in the general braking mode. However, when the ABS maintenance mode is switched to the ABS braking mode, the braking force can be restored instantaneously only by opening and closing the second solenoid valve 250 , so that the reaction speed can be increased. The ECU can quickly repeat the ABS braking mode and the ABS holding mode to prevent the wheels from being locked. Meanwhile, the ABS braking mode may be understood as a 'pressurization mode' because the air pressure transmitted to the braking unit increases.

10 is a diagram illustrating a configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ASR maintenance mode.

Referring to FIG. 10 , when the ABS-ASR braking device 10 is driven in the ASR maintenance mode, the ASR control valve 150 and the second solenoid valve 250 are turned on, and the first solenoid valve 200 is turned on. is OFF. That is, the ASR control valve 150 and the second solenoid valve 250 are closed, and the first solenoid valve 200 is opened. In other words, the first ASR port 151 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the second port ( 202 is communicated, and the input port 251 and the output port 252 of the second solenoid valve 250 are blocked.

The ASR maintenance mode is different from the ABS maintenance mode in that the ASR control valve 150 is turned on. When the ASR control valve 150 is turned on to communicate the first ASR port 151 and the third ASR port 153 , air from the air tank 40 flows in regardless of the operation of the brake pedal 50 . .

That is, the air in the air tank 40 is the first ASR port 151 and the third ASR port 153 of the ASR control valve 150, the first port 201 of the first solenoid valve 200 and It passes through the second port 202 sequentially to pressurize the control port 120 of the relay valve 100 .

Accordingly, even if the driver does not operate the brake pedal 50 , the air from the air tank 40 is transferred to the brake unit to generate braking force.

11 is a diagram illustrating a configuration of an ABS-ASR braking system according to an embodiment of the present invention in an ASR exhaust mode;

11 , when the ABS-ASR braking device is driven in the ASR exhaust mode, the ASR control valve 150 and the first solenoid valve 200 are in an ON state, and the second solenoid valve 250 is OFF state. That is, the first ASR port 151 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the third port 203 of the first solenoid valve 200 are connected. ) communicates with each other, and the input port 251 and the output port 252 of the second solenoid valve 250 communicate with each other.

The ASR exhaust mode is different from the ABS exhaust mode in that the ASR control valve 150 is turned on. When the ASR control valve 150 is turned on to communicate the first ASR port 151 and the third ASR port 153 , air from the air tank 40 irrespective of the operation of the brake pedal 50 is introduced. .

As the first solenoid valve 200 is turned on, the second port 202 and the third port 203 of the first solenoid valve 200 communicate with each other, and the control connected to the second port 202 The pneumatic pressure acting on the port 120 is lowered. As the pneumatic pressure acting on the control port 120 decreases, the delivery port 130 and the exhaust port 140 communicate with each other as shown in FIG. 4(b), and the pneumatic pressure applied to the brake unit is It is discharged to the exhaust unit 60 through the delivery port 130 and the exhaust port 140 .

12 is a diagram illustrating the configuration of an ABS-ASR braking device according to an embodiment of the present invention in an ASR braking mode;

12 , when the ABS-ASR braking device 10 is driven in the ASR braking mode, the ASR control valve 150 is turned on, and the first solenoid valve 200 and the second solenoid valve 250 are turned on. is OFF. That is, the ASR control valve 150 is closed, and the first solenoid valve 200 and the second solenoid valve 250 are opened. In other words, the first ASR port 151 and the third ASR port 153 of the ASR control valve 150 communicate with each other, and the first port 201 and the second port ( 202 communicates with each other, and the input port 251 and the output port 252 of the second solenoid valve 250 communicate with each other.

The ASR braking mode is different from the ABS braking mode in that the ASR control valve 150 is turned on. When the ASR control valve 150 is turned on to communicate the first ASR port 151 and the third ASR port 153 , air from the air tank 40 irrespective of the operation of the brake pedal 50 is introduced. .

That is, the air in the air tank 40 is the third port 201 and the first port 203 of the ASR control valve 150, the first port 201 and the second of the first solenoid valve 200 It passes through the port 203 sequentially to pressurize the control port 120 of the relay valve 100 .

Accordingly, even if the driver does not operate the brake pedal 50 , the air from the air tank 40 is transferred to the brake unit to generate braking force.

The ASR control valve 150, the first solenoid valve 200, and the second solenoid valve 250 are described as de-energized to open, so that when the solenoid valves 200 and 250 are OFF, the valves It has been described as being open, and the valve is closed when ON.

However, the present invention is not limited thereto, and the ASR control valve 150 , the first solenoid valve 200 and the second solenoid valve 250 may be configured as normally closed (energize to open), and the ASR control valve 150 ), it can be understood that the first solenoid valve 200 or the second solenoid valve 250 is turned ON for the opening, and is OFF for the closing.

10: ABS-ASR braking system 20: front wheel
25: front wheel brake 30: rear wheel
35: rear wheel brake 40, 45: air tank
50: brake pedal 60: exhaust
100: relay valve 110: air supply port
120: control port 130: delivery port
140: exhaust port 150: ASR control valve
151: first ASR port 152: second ASR port
153: third ASR port 200: first solenoid valve
201: first port 202: second port
203: third port 250: second solenoid valve
251: input port 252: output port

Claims (11)

Air tanks for storing compressed air, respectively;
a brake pedal for controlling a flow rate of air discharged from the air tank by a user's manipulation;
ASR control having a first ASR port through which the compressed air of the air tank is directly introduced, a second ASR port through which the compressed air of the air tank flows through the brake pedal, and a third ASR port through which the compressed air is discharged. valve;
a first port connected to the third ASR port; a first valve having a second port connected to the control port and a third port connected to the exhaust unit; and
In the ABS-ASR braking system for a vehicle comprising a; a second valve that selectively transmits the leaked air to the braking unit,
a relay valve provided with an air supply port through which compressed air is directly introduced from the air tank, a control port for varying an internal flow path according to pneumatic pressure, a delivery port through which internal air is selectively discharged along the internal flow path, and an exhaust port;
The ASR control valve is a 3-way valve that communicates the first ASR port and the third ASR port, or the second ASR port and the third ASR port,
When driven in ABS mode, the second ASR port and the third ASR port are communicated to apply the hydraulic pressure adjusted by the brake pedal to the first port,
When driven in the ASR mode, the ABS-ASR braking system for a vehicle connects the first ASR port and the third ASR port to apply the hydraulic pressure of the air tank to the first port.
delete The method of claim 1,
The first valve is a three-way valve that communicates the first port and the second port or communicates the second port and the third port.
4. The method of claim 3,
When driven in normal braking mode,
The ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port to transmit the pneumatic pressure operated by the brake pedal to the control port. and
The relay valve discharges the air introduced into the air supply port to the delivery port and
The second valve is opened, and the ABS-ASR braking system for a vehicle, characterized in that the air leaked from the delivery port is transferred to the braking unit.
4. The method of claim 3,
When driven in ABS hold mode
The ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port to transmit the pneumatic pressure operated by the brake pedal to the control port. and
The relay valve discharges the air introduced into the air supply port to the delivery port,
The second valve is closed, and the ABS-ASR braking system for a vehicle, characterized in that the air leaked from the delivery port is blocked from being delivered to the braking unit.
6. The method of claim 5,
When driven in ABS exhaust mode
The first valve connects the second port and the third port to block the pneumatic pressure transmitted to the control port,
The second valve is opened, and the air delivered to the braking unit flows out to the delivery port,
The relay valve is an ABS-ASR braking system for a vehicle, characterized in that the air introduced into the delivery port is discharged to the exhaust port.
6. The method of claim 5,
When driven in ABS braking mode,
The ASR control valve communicates the second ASR port and the third ASR port, and the first valve communicates the first port and the second port to transmit the pneumatic pressure operated by the brake pedal to the control port. and
The relay valve discharges the air introduced into the air supply port to the delivery port and
The second valve is opened, and the ABS-ASR braking system for a vehicle, characterized in that the air leaked from the delivery port is transferred to the braking unit.
4. The method of claim 3,
When driven in ASR hold mode
The ASR control valve communicates the first ASR port and the third ASR port, and the first valve communicates the first port and the second port to control the air pressure of the air tank regardless of the operation of the brake pedal. transmitted to the control port,
The relay valve discharges the air introduced into the air supply port to the delivery port,
The second valve is closed, and the ABS-ASR braking system for a vehicle, characterized in that the air leaked from the delivery port is blocked from being delivered to the braking unit.
9. The method of claim 8,
When driven in ASR exhaust mode
The first valve connects the second port and the third port to block the pneumatic pressure transmitted to the control port,
The second valve is opened, and the air delivered to the braking unit flows out to the delivery port,
The relay valve is an ABS-ASR braking system for a vehicle, characterized in that the air introduced into the delivery port is discharged to the exhaust port.
9. The method of claim 8,
When driven in ASR braking mode,
The ASR control valve communicates the first ASR port and the third ASR port, and the first valve communicates the first port and the second port to control the air pressure of the air tank regardless of the operation of the brake pedal. transmitted to the control port,
The relay valve discharges the air introduced into the air supply port to the delivery port and
The second valve is opened, and the ABS-ASR braking system for a vehicle, characterized in that the air leaked from the delivery port is transferred to the braking unit.
4. The method of claim 3,
The braking unit and the second valve are provided in plurality to correspond to the number of wheels ,
Each of the plurality of second valves transmits the air discharged from the delivery port to each of the plurality of brake units.

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