KR20120002061A - Brake system for commercial vehicle - Google Patents

Brake system for commercial vehicle Download PDF

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Publication number
KR20120002061A
KR20120002061A KR1020100062753A KR20100062753A KR20120002061A KR 20120002061 A KR20120002061 A KR 20120002061A KR 1020100062753 A KR1020100062753 A KR 1020100062753A KR 20100062753 A KR20100062753 A KR 20100062753A KR 20120002061 A KR20120002061 A KR 20120002061A
Authority
KR
South Korea
Prior art keywords
brake
vehicle
valve
compressed air
solenoid valve
Prior art date
Application number
KR1020100062753A
Other languages
Korean (ko)
Inventor
박상민
이동근
Original Assignee
(주)알엠티
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)알엠티 filed Critical (주)알엠티
Priority to KR1020100062753A priority Critical patent/KR20120002061A/en
Publication of KR20120002061A publication Critical patent/KR20120002061A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2250/00—Monitoring, detecting, estimating vehicle conditions
    • B60T2250/04—Vehicle reference speed; Vehicle body speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

The present invention relates to a brake system for a vehicle for improving safety of a ramp, including a reservoir tank in which compressed air is stored, a brake valve opened and closed by an operation of a brake pedal (BP), and a compressed air supplied through the brake valve. It comprises a brake chamber and a brake mechanism for converting to the solenoid valve, which is provided in the compressed air supply line between the brake valve and the brake chamber, and connected to the compressed air supply line in parallel with the solenoid valve the brake A check valve for supplying the compressed air supplied through the valve to the brake chamber, a speed sensor for detecting the speed of the vehicle, an accelerator pedal detecting unit for detecting the operation of the accelerator pedal, the speed sensor and the accelerator pedal The solenoid valve according to the output signal of the detector A controller for controlling the opening and closing of the is characterized in that configuration.

Description

Brake system for vehicle safety to improve slope safety {BRAKE SYSTEM FOR COMMERCIAL VEHICLE}

The present invention relates to a brake system for a vehicle for improving slope safety.

1 is a diagram illustrating a pneumatic brake system for a commercial vehicle such as a truck and a bus.

A general commercial vehicle pneumatic brake system includes a compressor 910 driven by an engine to compress external air into high pressure compressed air as shown in FIG. 1, and a pair of high pressure compressed air compressed by the compressor 910. The reservoir tank 920 and a brake valve 930 which is opened during operation of the brake pedal BP and supplies compressed air stored in the pair of reservoir tanks to the front and rear wheels, respectively, and the compression supplied through the brake valve. And a quick release valve 960 for distributing air in both directions, and a brake chamber 970 and a brake mechanism 980 for converting the braking force of the compressed air dispensed from the quill release valve.

On the other hand, driving a car encounters a variety of situations, one of the difficult situation is the slope. When the vehicle is stopped on a slope with a small slope, when the accelerator pedal is pressed for starting, the vehicle moves forward without any problem, but on a slope with a large slope, almost all vehicles are pushed back when the vehicle starts. . In this case, the car consumes a considerable amount of additional fuel and increases the risk of a safety accident such as a collision with a car behind. In particular, the risk of accidents caused by rain or snow is increased due to seasonal effects in summer or winter.

In the case of large vehicles, this phenomenon is often inevitable, which is a serious problem that may lead to large accidents. Therefore, the side brake is operated when the vehicle is stopped on the ramp, and the side brake is released after a certain amount of output is generated by starting the accelerator pedal. However, such a stop starting method has a problem that fuel consumption and smoke occurs because the vehicle moves by releasing the side brake only after a certain time has elapsed after the accelerator pedal is pressed. There is a problem that a large amount of brake parts (lining) wear and pollutants occur.

The present invention for solving this problem is to ensure the safety function on the ramp as the brake function is activated even when the vehicle is stopped by stepping on the brake pedal on the ramp and the brake pedal is automatically released when the accelerator pedal is pressed. An object of the present invention is to provide a vehicle brake system capable of further improving driving convenience.

The present invention for achieving the above object,

In a vehicle brake system comprising a reservoir tank for storing compressed air, a brake valve opened and closed by operation of a brake pedal, a brake chamber and a brake mechanism for converting compressed air supplied through the brake valve into braking force,

A solenoid valve provided in the compressed air supply line between the brake valve and the brake chamber, and connected to the compressed air supply line in parallel with the solenoid valve to supply compressed air supplied through the brake valve to the brake chamber. A check valve, a speed sensor for detecting the speed of the vehicle, an accelerator pedal detection unit for detecting the operation of the accelerator pedal of the vehicle, and controlling the opening and closing of the solenoid valve according to the output signal of the speed sensor and the accelerator pedal detection unit It provides a vehicle brake system for improving the safety of the ramp characterized in that it comprises a control unit.

And it is preferable that the safety brake switch to turn on / off the control unit.

The control unit closes the solenoid valve when an output signal having a vehicle speed of 0 km / h is input from the speed sensor, and when the output signal of an accelerator pedal is activated is input from the accelerator pedal detection unit, the solenoid valve. To open.

In the vehicle brake system for improving safety of the ramp, the brake function works even when the vehicle is stopped while the vehicle is stopped by stepping on the brake pedal (BP) on a slope that is encountered during operation of a vehicle such as a truck or a bus. As the brake is automatically released when stepped on, the safety function on the ramp can be secured, and driving convenience is further improved.

In addition, since the side brake does not need to be released after a predetermined time after depressing the accelerator pedal when restarting from a slope as in the related art, brake wear, soot generation, and fuel waste are greatly reduced.

1 is a view showing a conventional brake system for a commercial vehicle.
2 is a view schematically showing a vehicle brake system for improving the safety of the ramp of the present invention,
3 is a block diagram schematically illustrating a configuration of a vehicle brake system for improving safety of a ramp according to the present invention.
4 is a flowchart sequentially showing a state in which the solenoid valve is controlled according to the output signal of the speed sensor,
FIG. 5 is a flowchart sequentially showing an operating state when the brake pedal BP is pressed in the state in which the solenoid valve is closed.
6 is a flowchart sequentially illustrating a state in which the solenoid valve is controlled according to the output signal of the accelerator pedal detection unit.

Hereinafter, the vehicle brake system for improving the safety of the inclined road of the present invention will be described in detail with reference to Examples. The scope of the present invention is not limited to the following Examples.

2 is a diagram schematically showing a vehicle brake system for improving the safety of the ramp of the present invention, Figure 3 is a block diagram schematically showing the configuration of a vehicle brake system for improving the safety of the ramp.

The brake system for a vehicle for improving safety of the ramp of the present invention is a reservoir tank 120, a brake valve 130, a brake chamber 170, a brake mechanism 180, a solenoid valve 310, and a check as shown in FIGS. 2 and 3. The valve 330, the speed sensor 420, the accelerator pedal detector 430, and the controller 410 are configured to be included.

The reservoir tank 120 in which the compressed air supplied from the air compressor 110 is accommodated, the brake valve 130, the brake chamber 170, and the brake mechanism 180 constitute a conventional vehicle brake system. Description is omitted. And reference numeral 160 of FIG. 2 is a quick release valve for distributing the compressed air supplied through the brake valve in both left and right directions.

The solenoid valve 310 is provided in the compressed air supply line 20 between the brake valve 130 and the brake chamber 170. When the solenoid valve 310 is normally opened and the brake valve 130 is opened, the compressed air contained in the reservoir tank 120 passes through the solenoid valve 310 to be supplied into the brake chamber 170. do. The solenoid valve 310 is preferably used a solenoid valve 310 of the normal off type to maintain the normally open state.

When the solenoid valve 310 is supplied with power, the solenoid valve 310 closes the compressed air supply line between the brake valve 130 and the brake chamber 170, and compresses the brake air in the brake chamber 170. If the air is in the state it is maintained.

The check valve 330 is connected to the compressed air supply line in parallel with the solenoid valve 310. The check valve 330 supplies the compressed air supplied through the brake valve 130 to the brake chamber 170. When power is supplied to the solenoid valve 310 to step on the brake pedal BP while the solenoid valve 310 is closed, when the brake valve 130 is opened, the solenoid valve 310 is accommodated in the reservoir tank 120. Compressed air is supplied to the brake chamber 170 through the check valve 330.

The speed sensor 420 is for detecting the speed of the vehicle, and the accelerator pedal detection unit 430 is for detecting the operation of the accelerator pedal of the vehicle.

The accelerator pedal detection unit 430 may be configured as a position sensor for detecting the movement of the accelerator pedal, but is not limited thereto.

The controller 410 controls the opening and closing of the solenoid valve 310 according to the output signal of the speed sensor 420 and the accelerator pedal detection unit 430.

And as shown in Figure 3 it is preferable that the safety brake switch 440 to turn on / off the control unit 410 is provided separately. The safety brake switch 440 may be installed on a dashboard, a shift handle, or the like.

4 is a flowchart sequentially illustrating a state in which the solenoid valve 310 is controlled according to the output signal of the speed sensor 420, and FIG. 5 is a brake pedal BP in a state in which the solenoid valve 310 is closed. When stepped on, it is a flow chart showing the operation status sequentially.

The control unit 410 is the solenoid valve 310 when the output signal of the vehicle speed is 0km / h from the speed sensor 420 when the safety brake switch 440 is turned on as shown in FIG. The solenoid valve 310 is closed by supplying power to the solenoid valve 310. When the solenoid valve 310 is closed, the compressed air is maintained in the brake chamber 170, and thus the brake function is maintained.

That is, since the brake function is kept in operation even when the user presses the brake pedal B.P, driving convenience is greatly improved.

When the driver presses the brake pedal BP as shown in FIG. 5 in the state in which the solenoid valve 310 is closed, the brake valve 130 is opened and the compressed air from the reservoir tank 120 to the brake chamber 170. Is supplied.

When the solenoid valve 310 is closed in a state in which the brake function is not completely operated on the slope, the vehicle may be pushed back from the slope to cause a traffic accident. In this situation, when the driver presses the brake pedal BP, the brake function is applied to the brake mechanism 180 because the compressed air of the reservoir tank 120 is supplied to the brake chamber 170 through the check valve 330. There is an advantage that it can operate more strongly and prevent the vehicle from being pushed back.

6 is a flowchart sequentially illustrating a state in which the solenoid valve 310 is controlled according to the output signal of the accelerator pedal detection unit 430.

When the output signal of the accelerator pedal is activated from the accelerator pedal detection unit 430 is input to the controller 410 in the state in which the solenoid valve 310 is closed, the controller 410 is the solenoid valve 310. The solenoid valve 310 is opened by cutting off the power supply. When the solenoid valve 310 is opened, the brake function is released.

110: air compressor,
120: reservoir tank,
130: brake valve,
170: brake chamber,
180: brake mechanism,
310: solenoid valve,
410: control unit,
420: speed sensor,
430: accelerator pedal detection unit,
440: safety brake switch

Claims (3)

A brake system for a vehicle comprising a reservoir tank for storing compressed air, a brake valve opened and closed by the operation of a brake pedal (BP), a brake chamber and a brake mechanism for converting compressed air supplied through the brake valve into braking force. To
A solenoid valve provided in the compressed air supply line between the brake valve and the brake chamber, and connected to the compressed air supply line in parallel with the solenoid valve to supply compressed air supplied through the brake valve to the brake chamber. A check valve, a speed sensor for detecting the speed of the vehicle, an accelerator pedal detection unit for detecting the operation of the accelerator pedal of the vehicle, and controlling the opening and closing of the solenoid valve according to the output signal of the speed sensor and the accelerator pedal detection unit Vehicle brake system for improving the safety of the ramp characterized in that it comprises a control unit
The method of claim 1,
Safety brake switch for turning on / off the control unit, characterized in that the vehicle brake system for improving the stability of the ramp.
The method of claim 1,
The control unit closes the solenoid valve when an output signal having a vehicle speed of 0 km / h is input from the speed sensor, and when the output signal of an accelerator pedal is activated is input from the accelerator pedal detection unit, the solenoid valve. Vehicle brake system for improving the stability of the ramp characterized in that the opening.

KR1020100062753A 2010-06-30 2010-06-30 Brake system for commercial vehicle KR20120002061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100062753A KR20120002061A (en) 2010-06-30 2010-06-30 Brake system for commercial vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100062753A KR20120002061A (en) 2010-06-30 2010-06-30 Brake system for commercial vehicle

Publications (1)

Publication Number Publication Date
KR20120002061A true KR20120002061A (en) 2012-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100062753A KR20120002061A (en) 2010-06-30 2010-06-30 Brake system for commercial vehicle

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KR (1) KR20120002061A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105059278A (en) * 2015-07-24 2015-11-18 合肥工业大学 Motor coach running safety auxiliary system and control method thereof
WO2020013553A1 (en) * 2018-07-13 2020-01-16 (주)엠에스정밀 System for preventing from rolling back down slope, for industrial vehicle and construction equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105059278A (en) * 2015-07-24 2015-11-18 合肥工业大学 Motor coach running safety auxiliary system and control method thereof
CN105059278B (en) * 2015-07-24 2017-12-26 合肥工业大学 A kind of motor bus driving safety accessory system and its control method
WO2020013553A1 (en) * 2018-07-13 2020-01-16 (주)엠에스정밀 System for preventing from rolling back down slope, for industrial vehicle and construction equipment

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E902 Notification of reason for refusal
E601 Decision to refuse application
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J801 Dismissal of trial

Free format text: REJECTION OF TRIAL FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20121004

Effective date: 20121121