KR100857347B1 - An air tank pressure control apparatus for a vehicle - Google Patents

An air tank pressure control apparatus for a vehicle Download PDF

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Publication number
KR100857347B1
KR100857347B1 KR1020070074075A KR20070074075A KR100857347B1 KR 100857347 B1 KR100857347 B1 KR 100857347B1 KR 1020070074075 A KR1020070074075 A KR 1020070074075A KR 20070074075 A KR20070074075 A KR 20070074075A KR 100857347 B1 KR100857347 B1 KR 100857347B1
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South Korea
Prior art keywords
air
pressure
air tank
electric heater
vehicle
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KR1020070074075A
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Korean (ko)
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이승주
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현대자동차주식회사
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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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

An air tank pressure control apparatus for a vehicle is provided to maintain pressure of an air tank at a predetermined pressure level by raising inner temperature of the air tank with an electric heater. In an air tank pressure control apparatus for a vehicle, an air tank(20b) is filled with air with a predetermined pressure. The air in the air tank is supplied to brakes of wheels through a booster, when a brake pedal(30) is in operation. An electric heater(50) and a pressure sensor(60) are installed in the air tank. The electric heater contacts a storage battery(80) through a relay(70). The pressure sensor and the relay are in contact with an ECU(Electric Control Unit,90). The relay is turned on and the electric heater is in operation, when inner pressure of the air tank sensed by the pressure sensor is under a set pressure. The electric heater heats the inner air of the air tank such that brake pressure rises.

Description

차량의 에어탱크 압력 상승장치 { an air tank pressure control apparatus for a vehicle }Air tank pressure control device for an vehicle {an air tank pressure control apparatus for a vehicle}

본 발명은 에어압력을 브레이크 작동원으로 하는 대형버스 등의 차량에 있어서 각 브레이크에 에어를 공급하는 에어탱크의 내부 압력을 상승시킬 수 있도록 하는 차량의 에어탱크 압력 상승장치에 관한 것으로, 더 자세하게는 에어탱크의 내부 압력이 일시적으로 규정압력 이하로 떨어진 경우 에어탱크 내부에 설치한 전기가열기로 에어탱크 내부 공기를 가열하여 순간적으로 브레이크 작동 압력을 보상할 수 있도록 한 것에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air tank pressure raising device for a vehicle that can raise an internal pressure of an air tank for supplying air to each brake in a vehicle such as a large bus using air pressure as a brake operating source. When the internal pressure of the air tank temporarily drops below the specified pressure, the electric heater installed inside the air tank is used to heat the air in the air tank to compensate for the brake operating pressure instantly.

도 1에는 본 발명이 관계하는 차량의 에어탱크 설치상태도가 도시되어 있는 바, 에어압력을 브레이크 작동원으로 하는 대형버스 등의 차량에 있어서는 대개 도 1과 같이 에어펌프(10)로부터 생성된 일정 압력의 에어가 전륜 에어탱크(20a)와 후륜 에어탱크(20b)에 충전되고, 브레이크 페달(30) 작동시에 각 에어탱크(20a)(20b)의 에어가 부스터(40a)(40b)를 통해 각 바퀴의 브레이크에 전달되어 제동을 하게 된다.FIG. 1 shows an air tank installation state diagram of a vehicle to which the present invention relates, and in a vehicle such as a large bus using air pressure as a brake operating source, a constant pressure generated from the air pump 10 as shown in FIG. Air is charged into the front wheel air tank 20a and the rear wheel air tank 20b, and when the brake pedal 30 is operated, the air of each of the air tanks 20a and 20b passes through the boosters 40a and 40b. It is transmitted to the brake of the wheel to brake.

그런데 에어압력을 브레이크 작동원으로 하는 차량에 있어서는 시동초기, 에어누기, 에어 과사용 등으로 에어탱크의 압력이 일시적으로 규정압력 이하로 떨어지게 될 수 있으며, 이 때에 브레이크를 작동하게 되면 에어압력의 부족으로 정상적인 제동이 이루어지지 않게 되어 안전사고를 유발할 수 있게 된다.However, in a vehicle that uses air pressure as the brake operating source, the air tank pressure may temporarily drop below the specified pressure due to initial start-up, air leakage, or overuse of the air.At this time, if the brake is operated, the air pressure may be insufficient. Normal braking is not achieved, which may lead to a safety accident.

한편 배기가스의 폐열을 이용한 압축공기 생성장치를 명칭으로 하는 공개특허공보 제2002-68067호에는 엔진의 배기매니폴드로부터 나오는 배기가스를 머플러를 가진 배기파이프를 통해 대기에 방출하는 배기장치에 있어서, 배기파이프의 중간에 감긴 나선형의 전열관, 이 전열관의 반대쪽에서 다수의 핀으로 형성된 방열관으로 이루어진 온수순환기구와, 방열관 전체를 내장한 가열통과, 가열통 일측의 공기배출용 솔레노이드밸브와, 차측의 공기흡입용 솔레노이드밸브로 이루어진 공기 가열기구, 가열통에 공기를 공급하기 위한 에어펌프 및 가열통으로부터 나오는 압축공기를 저장하기 위한 에어탱크를 구비하여 배기파이프를 통해 배출되는 배기가스의 폐열을 이용하여 압축공기를 생성할 수 있도록 하는 기술이 제안되어 있다.On the other hand, Korean Patent Laid-Open Publication No. 2002-68067, entitled Compressed Air Generating Device Using Waste Heat of Exhaust Gas, discloses an exhaust apparatus for releasing exhaust gas from an exhaust manifold of an engine to the atmosphere through an exhaust pipe having a muffler. A hot water circulation mechanism consisting of a spiral heat transfer tube wound in the middle of the exhaust pipe, a heat dissipation tube formed of a plurality of fins on the opposite side of the heat pipe, a heating tube containing the entire heat dissipation tube, a solenoid valve for exhausting air on one side of the heating tube, and a vehicle side Air heating mechanism consisting of a solenoid valve for air suction of the air, an air pump for supplying air to the heating tank and an air tank for storing the compressed air from the heating tank to utilize the waste heat of the exhaust gas discharged through the exhaust pipe A technique for generating compressed air is proposed.

상기 종래 기술은 배기가스 열에 의해 초기에는 어느 정도의 압축공기가 생성되지만 에어탱크에 저장되면 다시 냉각되어 압력이 떨어지게 되므로 압축공기 효과가 미미하게 되고, 시동초기에는 배기가스 온도가 낮으므로 열에 의한 압축효과가 없으며, 그에 따라 브레이크 작동이 원활하지 않게 되어 안전사고를 유발할 우려가 많게 되는 문제가 있었다.In the prior art, a certain amount of compressed air is initially generated by the heat of exhaust gas, but when the air is stored in the air tank, the compressed air is reduced because the pressure is decreased. There is no effect, and accordingly there was a problem that the brake operation is not smooth and cause a safety accident.

본 발명은 상기와 같은 종래의 실정을 감안하여 안출한 것이며, 그 목적이 에어압력을 브레이크 작동원으로 하는 차량에 있어서는 시동초기, 에어누기, 에어 과사용 등으로 에어탱크의 압력이 일시적으로 규정압력 이하로 떨어지게 되는 경우 순간적으로 에어압력을 보상하여 브레이크 작동을 원활하게 할 수 있도록 함으로써 각종 안전사고를 예방할 수 있도록 하는 차량의 에어탱크 압력 상승장치를 제공하는 데에 있는 것이다.The present invention has been devised in view of the above-described conventional situation, and in the vehicle whose air pressure is the brake operating source, the pressure of the air tank is temporarily below the specified pressure due to the initial start, air leakage, or overuse of the air. In the case of falling to the air pressure to instantaneously compensate for the air to facilitate the brake operation to provide a vehicle air tank pressure riser to prevent various safety accidents.

본 발명은 상기의 목적을 달성하기 위하여 에어탱크 내부에 전기가열기를 설치하고, 에어탱크의 압력저하가 감지되는 경우 전기가열기를 작동시켜 에어탱크 내부온도를 급상승시키는 것에 의해 에어탱크의 압력을 적정압력으로 유지할 수 있도록 하는 것을 특징으로 한다.The present invention installs an electric heater inside the air tank to achieve the above object, and if the pressure drop of the air tank is detected by operating the electric heater to increase the temperature of the air tank to increase the pressure of the air tank Characterized in that it can be maintained at the appropriate pressure.

즉, 본 발명은 에어탱크의 내부에 전기가열기와 압력센서를 설치하고, 전기가열기를 릴레이를 통해 축전지에 접속하며, 압력센서와 릴레이를 전자제어유니트(ECU)에 접속하여 브레이크 페달 작동시에 압력센서로 감지한 에어탱크의 내부 압력이 설정압력이하일 때에 릴레이로 전기가열기를 작동하여 에어탱크의 내부 공기를 가열함으로써 브레이크 작용 압력을 상승시킬 수 있도록 하여서 되는 것이다.That is, in the present invention, an electric heater and a pressure sensor are installed inside the air tank, the electric heater is connected to the storage battery through a relay, and the pressure sensor and the relay are connected to an electronic control unit (ECU) to operate the brake pedal. When the internal pressure of the air tank detected by the pressure sensor is lower than the set pressure, the electric heater is operated by the relay to heat the air in the air tank so as to increase the brake action pressure.

이와 같은 본 발명에 있어서는 일시적으로 에어탱크의 브레이크 작동 에어압력이 규정압력이하로 떨어진 상태에서 브레이크 페달이 조작되는 경우 전기가열기를 작동시켜 에어탱크의 브레이크 작동 에어압력을 상승시킴으로써 브레이크 성능을 정상적으로 유지할 수 있게 되므로 브레이크 오동작에 따른 각종 안전사고를 예방할 수 있게 되는 등 차량의 안전성 및 상품성을 크게 향상시킬 수 있게 되는 등의 효과를 얻을 수 있게 된다.In the present invention as described above, when the brake pedal is operated in a state in which the brake operation air pressure of the air tank is temporarily below the specified pressure, the electric heater is operated to raise the brake operation air pressure of the air tank to maintain the brake performance normally. Since it is possible to prevent various safety accidents due to brake malfunction, it is possible to obtain an effect such as to greatly improve the safety and commerciality of the vehicle.

이하 본 발명의 구체적인 기술내용을 첨부도면에 의거하여 더욱 자세히 설명하면 다음과 같다.Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

도 2에는 본 발명의 한 실시예의 구성도가 도시되어 있는 바, 본 발명은 에어펌프(10)로부터 생성된 일정 압력의 에어가 에어탱크(20a)(20b)에 충전되고, 브레이크 페달(30) 작동시에 에어탱크(20a)(20b)의 에어가 부스터(40a)(40b)를 통해 각 바퀴의 브레이크에 전달되어 제동이 이루어지는 차량에 있어서, 상기 에어탱크(20a)(20b)의 내부에 전기가열기(50)와 압력센서(60)를 설치하고, 전기가열기(50)를 릴레이(70)를 통해 축전지(80)에 접속하며, 압력센서(60)와 릴레이(70)를 전자제어유니트(90; ECU)에 접속하여 브레이크 페달(30) 작동시에 압력센서(60)로 감지한 에어탱크(20a)(20b)의 내부 압력이 설정압력이하일 때에 릴레이(70)를 온시켜 전기가열기(50)를 작동시킴으로써 에어탱크(20a)(20b) 내부 공기를 가열하여 브 레이크 작동 압력을 상승시킬 수 있도록 하여서 되는 것이다.2 is a block diagram of an embodiment of the present invention, the present invention is a constant pressure air generated from the air pump 10 is filled in the air tank (20a, 20b), the brake pedal 30 In operation, the air of the air tanks 20a and 20b is transferred to the brakes of the wheels through the boosters 40a and 40b to brake the electric vehicle. The heater 50 and the pressure sensor 60 are installed, the electric heater 50 is connected to the storage battery 80 through the relay 70, and the pressure sensor 60 and the relay 70 are electronically controlled. 90 is connected to the ECU and turns on the relay 70 when the internal pressure of the air tanks 20a and 20b detected by the pressure sensor 60 at the time of operating the brake pedal 30 is lower than the set pressure. By operating 50, the air inside the air tanks 20a and 20b can be heated to raise the brake operating pressure. .

도시된 실시예는 전기가열기(50)의 양단에 절연체(51)를 설치한 형태를 갖는 다.The illustrated embodiment has a form in which an insulator 51 is installed at both ends of the electric heater 50.

도 3에는 본 발명의 제어 흐름도가 도시되어 있다.3 is a control flowchart of the present invention.

본 발명의 에어탱크 압력 상승장치는 에어탱크(20a)(20b) 내부의 압력이 규정압력을 유지할 때에 브레이크 페달(30) 조작신호가 전자제어유니트(90)에 입력되더라도 릴레이(70) 및 전기가열기(50)를 작동시키지 않게 된다.In the air tank pressure raising device of the present invention, when the pressure inside the air tanks 20a and 20b maintains the prescribed pressure, the relay 70 and the electric power are supplied even if the brake pedal 30 operation signal is input to the electronic control unit 90. The hot air 50 is not activated.

그러나 에어탱크(20a)(20b)의 내부 압력이 규정압력이하로 떨어진 경우 브레이크 페달(30)의 조작신호가 입력되면 전자제어유니트(90)에서 릴레이(70) 및 전기가열기(50)를 작동시켜 에어탱크 내부 온도를 상승시킴으로써 브레이크 작동 압력을 높이게 되며, 에어탱크(20a)(20b)의 내부 압력이 규정압력까지 상승되거나 브레이크 페달(30)을 조작신호가 입력되지 않을 때에는 릴레이(70) 및 전기가열기(50)의 작동을 오프시키게 된다.However, when the internal pressure of the air tanks 20a and 20b falls below the prescribed pressure, when the operation signal of the brake pedal 30 is input, the relay 70 and the electric heater 50 are operated by the electronic control unit 90. By increasing the internal temperature of the air tank to increase the brake operating pressure, the relay 70 and when the internal pressure of the air tank (20a, 20b) is raised to the specified pressure or when the operation signal is not input to the brake pedal (30) The operation of the electric heater 50 is turned off.

도 1은 본 발명이 관계하는 차량의 에어탱크 설치상태도1 is an air tank installation state of the vehicle according to the present invention

도 2는 본 발명의 한 실시예의 요부 구성도2 is a main configuration diagram of an embodiment of the present invention;

도 3은 동 실시예의 제어 흐름도3 is a control flowchart of the embodiment;

< 도면의 주요 부분에 대한 부호 설명 ><Explanation of Signs of Major Parts of Drawings>

10 : 에어펌프 20a, 20b : 에어탱크10: air pump 20a, 20b: air tank

30 : 브레이크 페달 40a, 40b : 부스터30: brake pedal 40a, 40b: booster

50 : 전기가열기 60 : 압력센서50: electric heater 60: pressure sensor

70 : 릴레이 80 : 축전지70: relay 80: storage battery

90 : 전자제어유니트90: electronic control unit

Claims (2)

에어펌프(10)로부터 생성된 일정 압력의 에어가 에어탱크(20a)(20b)에 충전되고, 브레이크 페달(30) 작동시에 에어탱크(20a)(20b)의 에어가 부스터(40a)(40b)를 통해 각 바퀴의 브레이크에 전달되어 제동이 이루어지는 차량에 있어서, 상기 에어탱크(20a)(20b)의 내부에 전기가열기(50)와 압력센서(60)를 설치하고, 전기가열기(50)를 릴레이(70)를 통해 축전지(80)에 접속하며, 압력센서(60)와 릴레이(70)를 전자제어유니트(90; ECU)에 접속하여 브레이크 페달(30) 작동시에 압력센서(60)로 감지한 에어탱크(20a)(20b)의 내부 압력이 설정압력이하일 때에 릴레이(70)를 온시켜 전기가열기(50)를 작동시킴으로써 에어탱크(20a)(20b) 내부 공기를 가열하여 브레이크 작동 압력을 상승시킬 수 있도록 한 것을 특징으로 하는 차량의 에어탱크 압력 상승장치.Air of constant pressure generated from the air pump 10 is filled in the air tanks 20a and 20b, and air in the air tanks 20a and 20b is booster 40a and 40b when the brake pedal 30 is operated. In the vehicle that is transmitted to the brake of each wheel through the brake), the electric heater 50 and the pressure sensor 60 is installed inside the air tanks 20a and 20b, and the electric heater 50 ) Is connected to the storage battery 80 through the relay 70, the pressure sensor 60 and the relay 70 is connected to the electronic control unit 90 (ECU) to the pressure sensor 60 at the time of operating the brake pedal 30 When the internal pressure of the air tanks 20a and 20b sensed by) is lower than the set pressure, the relay 70 is turned on to operate the electric heater 50 to heat the air in the air tanks 20a and 20b to brake the air. Air tank pressure increase device for a vehicle, characterized in that to increase the operating pressure. 제1항에 있어서, 전기가열기(50)의 양단에 절연체(51)를 설치한 것을 특징으로 하는 차량의 에어탱크 압력 상승장치.2. The air tank pressure raising device for a vehicle according to claim 1, wherein an insulator (51) is provided at both ends of the electric heater (50).
KR1020070074075A 2007-07-24 2007-07-24 An air tank pressure control apparatus for a vehicle KR100857347B1 (en)

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