KR100211216B1 - Brake system fluctuating maximum fluid pressure according to road condition - Google Patents

Brake system fluctuating maximum fluid pressure according to road condition Download PDF

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Publication number
KR100211216B1
KR100211216B1 KR1019970009765A KR19970009765A KR100211216B1 KR 100211216 B1 KR100211216 B1 KR 100211216B1 KR 1019970009765 A KR1019970009765 A KR 1019970009765A KR 19970009765 A KR19970009765 A KR 19970009765A KR 100211216 B1 KR100211216 B1 KR 100211216B1
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South Korea
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hydraulic pressure
unit
brake
brake system
road
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KR1019970009765A
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Korean (ko)
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KR19980074104A (en
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김만섭
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홍건희
한국타이어주식회사
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    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/58—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration responsive to speed and another condition or to plural speed conditions
    • 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
    • B60T13/74—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 electrical assistance or drive
    • B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • 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
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • 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)
  • Braking Systems And Boosters (AREA)

Abstract

본 발명은 노면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템에 관한 것으로, 브레이크 작동유압의 최고치를 제한 할 수 있도록 됨에 따라, 도로상황에 의한 운전자의 브레이크 오작동에 의해서 발생되는 과도한 슬립현상을 배제할 수 있음은 물론 눈길 및 빙판길에서의 브레이크 오작동시에도 최적의 상태에서 제동력을 유지할 수 있도록 되어 접촉사고 및 대형사고로 인한 인명 및 재산피해를 막을 수 있도록 된 것이다.The present invention relates to a brake system in which the maximum value of the brake hydraulic pressure is changed according to a road surface condition, and thus, the maximum value of the brake hydraulic pressure can be limited, thereby preventing excessive slip phenomenon caused by a driver's brake malfunction due to road conditions. Not only can it be excluded, but also it can maintain the braking force in the optimal state even when the brakes malfunction on snowy roads and ice roads, thereby preventing human and property damage from contact accidents and large accidents.

Description

노면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템Brake system in which the maximum value of the brake hydraulic pressure changes according to the road surface condition

본 발명은 자동차용 브레이크 시스템에 관한 것으로, 노면상태에 따라 작동유압의 최고치를 변환할 수 있도록 되므로 특히 눈길이나 빙판길등 미끄러지기 쉬운곳에서 급제동시에도 구동바퀴의 슬립(Slip)현상이 일어나지 않으므로 최적의 제동력상태로 유지할 수 있도록 된 도면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템에 관한 것이다.The present invention relates to a brake system for automobiles, so that the maximum operating hydraulic pressure can be converted according to the road surface condition, so that slippage of the driving wheel does not occur even during sudden braking in a slippery place such as a snowy road or an ice road. The present invention relates to a brake system in which the maximum value of the brake hydraulic pressure is changed according to the state of the drawing in which the optimal braking force state can be maintained.

일반적으로, 제동장치는 주행중의 자동차를 감속 또는 정지시키고 동시에 주차상태를 유지하기 위해 사용되는 장치이며 보통 마찰력을 이용해서 자동차의 운동에너지를 열에너지로 바꾸어 제동작용을 하는 것으로서, 종래에는 제2도에 도시된 바와 같이, 브레이크페달을 밟으면 배력장치에 의해서 담력이 증가되게되고 마스터실린더에서 유압이 발생되어 이 압력은 브레이크 파이프를 통하여 브레이크압으로 작용하며 디스크브레이크에서는 패드를 디스크로 밀어 붙여 제동작용을 하게되고 드럼디스크에서는 피스톤을 이동시켜 브레이크슈가 확장하게되어 전류 및 후륜의 제동작용을 하게된다.In general, a braking device is a device used to decelerate or stop a vehicle while driving and at the same time maintain a parking state. A braking device converts a kinetic energy of a vehicle into thermal energy using a frictional force and performs a braking action. As shown in the figure, when the brake pedal is pressed, the courage is increased by the hydraulic power unit, and hydraulic pressure is generated in the master cylinder, and this pressure acts as the brake pressure through the brake pipe, and in the disc brake, the pad is pushed to the disc for braking action. In the drum disc, the brake shoe is extended by moving the piston to brake the current and the rear wheels.

그러나, 상기 브레이크시스템은 급제동시나 지속적인 브레이크 작동시에 페이드(Fade)현상과 베이퍼락(Vapor-Lock)현상 및 한쪽방향으로 쏠림현상 등이 발생되므로 이를 개선하기 위해 ABS(Anti-lock Braking System) 및 ECS(Electrical Control System)장치등이 개발되었는데, 여기서 ABS는 타이어와 노면의 마찰력이 작아지면 1초에 30번 브레이크를 작동시켰다 풀어줬다를 반복하여 상기 현상을 방지하는 장치이며, ECS는 중앙제어장치에서 차량의 차륜속도 및 추정차량속도 등을 이용하여 브레이크압을 높였다 낮추었다 하는 장치이다.However, since the brake system generates a fade phenomenon, a vapor-lock phenomenon and a pull in one direction during sudden braking or continuous brake operation, an ABS (Anti-lock Braking System) and An electric control system (ECS) device has been developed, and ABS is a device that prevents the phenomenon by repeatedly operating and releasing the brake 30 times per second when the friction between the tire and the road surface decreases, and the ECS is a central control device. Is a device that raises and lowers brake pressure by using wheel speed and estimated vehicle speed of vehicle.

그러나, 상기 브레이크 시스템들은 일반도로를 가정하여 모든 수치를 제어하였고, ECS장치 역시 추정차량속도 및 감속도 등이 일반도로의 노면 기준값에 의해서 제어되어왔는데, 따라서 노면상태가 좋치않은 경우 특히 눈길이나 빙판길에서의 급브레이크 작동시에 상기 브레이크 시스템들은 구동바퀴의 슬립(Slip)현상이 발생되어 차량의 방향성이 상실되고 따라서 접촉하고 및 대형사고로 인한 인명과 재산에 치명적인 피해를 주는 문제점이 있었다.However, the brake systems control all the values on the assumption of the general road, and the ECS system has also been controlled by the road reference value of the general road, such as the estimated vehicle speed and deceleration. The brake systems have a problem of slippage of driving wheels due to sudden brake operation on the road, which results in loss of directionality of the vehicle, thus causing fatal damage to life and property due to contact and heavy accidents.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 발명된 것으로, 브레이크 작동유압의 오작동으로 인한 과도한 슬립현상을 방지할 수 있음은 물론 눈길 및 빙판길에서의 브레이크 오작동시에도 최적의 상태에서 제동력을 유지할 수 있도록된 노면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템을 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the above problems, it is possible to prevent excessive slip phenomenon due to the malfunction of the brake operating hydraulic pressure, as well as to maintain the braking force in the optimum state in the case of brake malfunction on the snow road and ice road It is an object of the present invention to provide a brake system in which the maximum value of the brake hydraulic pressure is changed according to the available road condition.

제1도은 본 발명에 따른 브레이크 시스템의 작동도.1 is an operation of the brake system according to the invention.

제2도는 종래기술로 제1도에 대응되는 장치도이다.2 is a device diagram corresponding to FIG. 1 according to the related art.

상기와 같은 목적을 달성하기 위한 본 발명은, 브레이크페달부와, 배력장치부와 마스터실린더부와, 센스부와 밸브부 및 시피유(C. P. U)로 구성된 제어부와, 조작자의 판단에 의해서 작동되는 스위치부와, 브레킹의 최종단계인 전륜브레이크 및 후륜브레이크로 이루어진다.In order to achieve the above object, the present invention provides a brake pedal unit, a booster unit, a master cylinder unit, a control unit consisting of a sense unit, a valve unit, and CP oil, and a switch operated by an operator's judgment. It consists of the front wheel brake and the rear wheel brake, which are the final stages of the braking.

따라서, 운전자가 노면의 상태를 파악하여 최종적으로 스위치부의 작동유압을 선택하여 위치함에 따라, 이 스위치로부터 전기적신호를 받은 시피유가 유압의 압력을 측정하여 보내진 신호를 인지하여 최대 작동유압을 조정하도록 센서부와 밸브부에 전기적신호를 보내는 데 이때 상기 밸브부의 작동으로 브레이크 최대 작동유압이 제한되어진다.Therefore, as the driver grasps the road condition and finally selects and operates the hydraulic pressure of the switch unit, the sensor receives the electrical signal from the switch and adjusts the maximum hydraulic pressure by recognizing the signal sent by measuring the hydraulic pressure. The electrical signal is sent to the part and the valve part, where the maximum hydraulic pressure of the brake is limited by the operation of the valve part.

이하, 본 발명을 예시된 도면을 참조로 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the illustrated drawings.

제1도은 본 발명에 따른 브레이크 시스템의 장치를 도시한 것인 바, 본 발명은, 차실내에 구비되어지는 브레이크페달부와, 상기 브레이크페달부에 가해지는 힘을 증가시키는 배력장치부와, 유압을 발생시키는 마스터실린더부와, 유압을 측정하는 센서부와 유압의 흐름을 차단하는 밸브부 및 전기적신호에 따라 상기 센서부와 밸브부에 명령을 전달하는 시피유(C. P. U)로 이루어진 제어부와, 차실내의 전방상단에 위치하여 운전자가 노면상황을 판단하여 노면에 맞는 브레이크 최대작동유압을 선택할 수 있도록 되는 스위치부와, 제동력을 최종적으로 실행하는 전륜브레이크 및 후륜브레이크로 구성되어진다.FIG. 1 shows a device of a brake system according to the present invention. The present invention provides a brake pedal unit provided in a vehicle cabin, a booster unit for increasing a force applied to the brake pedal unit, and hydraulic pressure. A control unit comprising a master cylinder unit for generating a pressure, a sensor unit for measuring hydraulic pressure, a valve unit for blocking the flow of hydraulic pressure, and a CP oil for transmitting a command to the sensor unit and the valve unit according to an electrical signal, It is composed of a switch unit which is located in the upper front of the room to allow the driver to determine the road surface condition and select the maximum brake hydraulic pressure for the road surface, and the front wheel brake and the rear wheel brake to finally perform the braking force.

따라서, 운전자가 운전상의 노면에 맞게 상기 스위치를 조작함에 따라, 스위치의 전기적신호가 상기 시피유에 도달하게 되어 여기서 시피유는 상기 센서부와 밸브부가 유압의 흐름을 차단하도록 제어하여 최대작동유압을 조절할 수 있게된다.Therefore, as the driver operates the switch according to the road surface in operation, the electrical signal of the switch reaches the sippy oil, where the sippy oil can control the sensor unit and the valve unit to block the flow of hydraulic pressure to adjust the maximum operating hydraulic pressure. Will be.

이에 따라, 눈길 및 빙판길을 운행중인 운전자가, 차실내에 장착되어진 상기 스위치를 눈길 및 빙판길로 선택함에 따라 최대작동유압이 상기 제어부에 의해서 과도한 슬립이 발생하지 않는 최대유압으로 변환되어져 최적의 제동력을 유지하게 된다.Accordingly, when the driver running on the snow road and the ice road selects the switch mounted in the cabin as the snow road and the ice road, the maximum operating hydraulic pressure is converted into the maximum hydraulic pressure without excessive slip by the controller. Maintain braking force.

이때, 차의 제동거리는 일반적인 노면보다는 길어지나, 빙판길에서의 급브레이크작동시에 슬립현상이 일어나지 않음에 따라 차량의 방향성을 유지할 수 있음은 물론 제동거리도 종래의 브레이크 시스템보다 단축되어진다.At this time, the braking distance of the car is longer than the general road surface, but the slippage does not occur during the sudden brake operation on the ice road, it is possible to maintain the directionality of the vehicle and the braking distance is shorter than the conventional brake system.

이상 설명한 바와 같이 본 발명에 의하면, 최대작동유압을 조절할 수 있음에 따라, 초보운전자 뿐만 아니라 경험이 많은 운전자가 눈길이나 빙판길에서도 과도하게 브레이크를 작동시킴으로 발생되는 노면에서 미끄러지는 타이어의 과도한 슬립을 막을 수 있어 접촉사고 및 대형사고로 인한 인명 및 재산피해를 막을 수 있는 효과가 있다.As described above, according to the present invention, as the maximum operating hydraulic pressure can be adjusted, excessive slippage of the tire sliding on the road surface caused by excessively operating the brake on the snow road or the ice road as well as the novice driver is experienced. It can prevent the damage of life and property caused by contact accident and large accident.

이상에서 설명한 것은 본 발명에 의한 노면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템을 실시하기 위한 하나의 실시예에 불과한 것으로, 이하 청구범위내에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경실시가 가능할 것이다.What has been described above is only one embodiment for implementing a brake system in which the maximum value of the brake hydraulic pressure is changed according to the road surface condition according to the present invention, without departing from the gist of the present invention as claimed in the following claims. Anyone of ordinary skill in the art to which the invention pertains may make various changes.

Claims (1)

차실내에 구비되어지는 브레이크페달부와, 상기 브레이크페달부에 가해지는 힘을 증가시키는 배력장치부와, 유압을 발생시키는 마스터실린더부와, 제동력을 최종적으로 실행하는 전륜브레이크 및 후륜브레이크로 구성되어지는 브레이크시스템에 있어서, 상기 마스터 실리더에서 유압을 측정하는 센서부와 유압의 흐름을 차단하는 밸브부 및 전기적신호에 따라 상기 센서부와 밸브부에 명령을 전달하는 시피유(C. P. U)로 이루어진 제어부와, 이 제어부의 시피유와 연결되고서 노면상태에 따른 최대작동유압치를 수동으로 소작/선택하여 상기 시피유에 이 최대작동유압치를 전달하도록 된 스위치부로 구성되어지는 것을 특징으로 하는 노면상태에 따라 브레이크 작동유압의 최고치가 변화되는 브레이크 시스템.It is composed of a brake pedal unit provided in the cabin, a booster unit for increasing the force applied to the brake pedal unit, a master cylinder unit for generating hydraulic pressure, and a front wheel brake and a rear wheel brake for finally performing braking force. In the losing brake system, a control unit consisting of a sensor unit for measuring the hydraulic pressure in the master cylinder, a valve unit for blocking the flow of the hydraulic pressure and the CP unit for transmitting a command to the sensor unit and the valve unit in accordance with an electrical signal. And a switch unit connected to the sippy oil of the control unit and configured to manually cauterize / select the maximum working hydraulic pressure value according to the road surface state and to transfer the maximum working hydraulic pressure value to the sippy oil. Brake system with the highest hydraulic pressure.
KR1019970009765A 1997-03-21 1997-03-21 Brake system fluctuating maximum fluid pressure according to road condition KR100211216B1 (en)

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KR1019970009765A KR100211216B1 (en) 1997-03-21 1997-03-21 Brake system fluctuating maximum fluid pressure according to road condition

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KR1019970009765A KR100211216B1 (en) 1997-03-21 1997-03-21 Brake system fluctuating maximum fluid pressure according to road condition

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KR100211216B1 true KR100211216B1 (en) 1999-07-15

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833270A (en) * 1972-02-12 1974-09-03 Bosch Gmbh Robert Vehicle wheel fluid brake anti-lock system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833270A (en) * 1972-02-12 1974-09-03 Bosch Gmbh Robert Vehicle wheel fluid brake anti-lock system

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