KR100774244B1 - Fuel liguid removal device for a fuel vapor of a fuel tank for automobile - Google Patents

Fuel liguid removal device for a fuel vapor of a fuel tank for automobile Download PDF

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Publication number
KR100774244B1
KR100774244B1 KR1020060093270A KR20060093270A KR100774244B1 KR 100774244 B1 KR100774244 B1 KR 100774244B1 KR 1020060093270 A KR1020060093270 A KR 1020060093270A KR 20060093270 A KR20060093270 A KR 20060093270A KR 100774244 B1 KR100774244 B1 KR 100774244B1
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South Korea
Prior art keywords
fuel
gas
separator
fuel tank
canister
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KR1020060093270A
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Korean (ko)
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이경록
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쌍용자동차 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854—Details of the absorption canister
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A removal device of liquid phase fuel contained in fuel-vapor gas of a fuel tank for an automobile is provided to previously prevent mis-operation and breakdown of a canister due to liquid phase fuel by allowing only the pure fuel-vapor gas to be flowed into the canister. A removal device of liquid phase fuel contained in fuel-vapor gas of a fuel tank for automobile comprises a separator(300), a canister(500) and a safety valve(400). The separator is formed with a discharge port(310) of the fuel-vapor gas in one side, and provided with a plurality of partition membranes(330) in the inside between the discharge port and a gas entrance hole(321) so as to pass through the fuel-vapor gas. The fuel-vapor gas generated inside the fuel tank is collected to a canister through a rollover valve(200) formed with a gas inlet/outlet(210,220), sent to a combustion chamber of an engine and combusted. The safety valve for allowing a ball(420) to open and close the gas inlet is installed in a lower surface of a gas inflow hole(322).

Description

자동차의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치{Fuel liguid removal device for a fuel vapor of a fuel tank for automobile}Fuel liguid removal device for a fuel vapor of a fuel tank for automobile}

도 1 은 종래 롤오버밸브가 연료탱크에 설치된 상태를 도시한 측면도1 is a side view showing a state in which a conventional rollover valve is installed in a fuel tank

도 2 는 본 발명에 따라 롤오버밸브와 세퍼레이터가 연료탱크내에 설치된 상태를 예시한 측면도 2 is a side view illustrating a state in which a rollover valve and a separator are installed in a fuel tank according to the present invention;

도 3 은 본 발명에 따라 세퍼레이터와 롤오버밸브가 서로 결합된 상태를 예시한 요부 단면도 3 is a cross-sectional view illustrating main parts illustrating a state in which a separator and a rollover valve are coupled to each other according to the present invention;

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

100 : 연료탱크 110 : 상부몸체100: fuel tank 110: upper body

200 : 롤오버밸브 210,430 : 가스입구200: rollover valve 210,430: gas inlet

220 : 가스출구 300 : 세퍼레이터220: gas outlet 300: separator

310 : 배출구 320 : 바닥면310: outlet 320: bottom surface

321 : 가스출입공 322 : 가스유입공321: gas inlet hole 322: gas inlet hole

330 : 격막 400 : 안전밸브330: diaphragm 400: safety valve

410 : 스프링 420 : 볼410: spring 420: ball

500 : 캐니스터500: canister

본 발명은 자동차의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치에 관한 것으로서 더욱 상세히는 연료증발가스가 캐니스터로 유입되기 위해 연료탱크를 빠져나갈때 연료증발가스에 함유된 액상연료는 빠져나가지 않고, 순수한 연료증발가스만이 캐니스터로 유입되어 액상연료에 의한 캐니스터의 기능이 저하되거나 쉽게 고장나는 것을 미연에 방지할 수 있는 자동차의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치에 관한 것이다.The present invention relates to an apparatus for removing liquid fuel contained in fuel evaporation gas in a fuel tank of an automobile. More specifically, the liquid fuel contained in fuel evaporation gas does not escape when the fuel evaporation gas leaves the fuel tank to flow into the canister. In addition, the present invention relates to a liquid fuel removal device contained in fuel evaporation gas in a fuel tank of an automobile, in which only pure fuel evaporation gas flows into the canister and prevents the function of the canister from being degraded or easily broken by the liquid fuel.

일반적으로 연료탱크는 엔진의 실린더에 공급되는 연료를 저장하는 용기로서 엔진의 배기열및 지면으로부터의 복사열을 받아 온도가 올라가면 연료증발가스가 발생되어 내부 압력을 높이게된다.In general, the fuel tank is a container for storing the fuel supplied to the cylinder of the engine and receives the exhaust heat of the engine and radiant heat from the ground, and when the temperature rises, fuel evaporation gas is generated to increase the internal pressure.

상기의 연료증발가스 주성분은 대기를 오염시키는 탄화수소 가스로서 산소와 화합하여 오존이 대량으로 발생되면 인체는 물론 대기환경에 심각한 문제를 유발하기 때문에 연료증발가스를 대기중으로 방출시키지 않기 위하여 활성탄이 구비된 캐니스터를 엔진과 연료탱크를 연결한 호스에 설치하여 연료증발가스를 캐니스터에 포집한후 활성탄에 흡착시켜 저장하였다가 외기와 함께 연소실로 보내도록 한 것이다.The main component of the fuel evaporation gas is a hydrocarbon gas that pollutes the atmosphere. When ozone is generated in combination with oxygen, it causes serious problems to the human body as well as the atmospheric environment. Therefore, activated carbon is provided to prevent the emission of fuel evaporation gas into the atmosphere. The canister was installed in the hose connecting the engine and the fuel tank to collect the fuel evaporation gas in the canister, adsorb it to activated carbon, store it, and send it to the combustion chamber together with the outside air.

즉, 도 1 에서 도시한 바와같이 연료탱크(10)의 일측 표면에는 캐니스터(도면중 미도시)와 연결된 호스(도면중 미도시)와 결합될 수 있도록 롤오버밸브(20)를 설치하여 상기 롤오버밸브(20)를 통해 연료증발가스를 캐니스터내로 흘러 들어가도록 하는데 상기 롤오버밸브(20)는 평상시에는 항상 열려 있는 상태이고, 차량이 45도 이상 기울어지거나 전복시에는 연료가 연료탱크(10)외부로 누출되지 않도록 닫혀지는 것이다.That is, as shown in FIG. 1, a rollover valve 20 is installed on one surface of the fuel tank 10 so as to be coupled to a hose (not shown) connected to a canister (not shown). Fuel evaporation gas flows into the canister through the (20), and the rollover valve (20) is always open, and when the vehicle is tilted more than 45 degrees or the fuel rolls over, the fuel leaks out of the fuel tank (10). It is closed so as not to.

상기 롤오버밸브(20)를 거쳐 캐니스터로 들어간 연료증발가스는 엔진이 정지되어 있을 경우에는 퍼지솔레노이드밸브(도면중 미도시)가 닫혀있기 때문에 연료증발가스는 엔진쪽으로 흐르지 않고, 캐니스터내에 멈추게 되어 외기만이 대기중으로 방출된다.The fuel evaporation gas entering the canister via the rollover valve 20 is closed when the engine is stopped, so the fuel evaporation gas does not flow to the engine and stops in the canister because the purge solenoid valve (not shown) is closed. This is released into the atmosphere.

이후 엔진 작동시에는 엔진의 흡입 부압에 의해 퍼지솔레노이드밸브가 열리고, 외기가 캐니스터를 통과하면서 캐니스터의 활성탄에 흡착된 연료증발가스는 전자제어 유니트(ECU)의 제어작동에 의해 작동되는 퍼지솔레노이드밸브를 통해 엔진의 부압에 따라 엔진의 연소실로 유입된후 연소가 이루어져 연료증발가스를 제어토록 한 것이다.Subsequently, when the engine is operated, the purge solenoid valve is opened by the intake negative pressure of the engine, and the fuel evaporation gas adsorbed on the activated carbon of the canister while the outside air passes through the canister is operated by the control operation of the electronic control unit (ECU). Through the inlet pressure of the engine through the combustion chamber of the engine after combustion to control the fuel evaporation gas.

여기서 상기 캐니스터의 활성탄은 외기에 청소되므로 반복해서 사용할수 있는 것이며, 연소실에 분사되는 연료량은 계속적으로 전자유니트에 의해 제어된다.Here, the activated carbon of the canister can be repeatedly used since it is cleaned in the outside air, and the amount of fuel injected into the combustion chamber is continuously controlled by the electronic unit.

그런데 상기 연료증발가스에는 미세한 액상연료가 포함되어 있는데 이러한 액상연료가 연료증발가스와 함께 그대로 캐니스터로 지속적으로 들어가게 되면 액상연료에 의하여 캐니스터의 기능이 저하될뿐만 아니라 캐니스터가 쉽게 고장나는 원인이 되었다.However, the fuel evaporation gas contains a fine liquid fuel. If the liquid fuel continuously enters the canister as it is along with the fuel evaporation gas, not only the function of the canister is degraded by the liquid fuel but also the canister is easily broken.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해소하기 위하여 발명된 것으로서, 본 발명의 목적은 연료탱크내의 연료증발가스가 캐니스터로 유입될시 연료증발가스에 함유된 액상연료는 분리되어 연료탱크로 다시 리턴되고, 순수한 연료증발가스만이 캐니스터로 유입되어 액상연료에 인하여 캐니스터의 기능이 저하되거나 쉽게 고장나는 것을 효과적으로 방지할 수 있는 차량의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치를 제공하는데 있다.Therefore, the present invention has been invented to solve the conventional problems as described above, an object of the present invention is to separate the liquid fuel contained in the fuel evaporation gas into the fuel tank when the fuel evaporation gas in the fuel tank is introduced into the canister The liquid fuel removal device contained in the fuel evaporation gas contained in the fuel tank of the vehicle can be effectively returned to prevent the canister from deteriorating or easily malfunctioning due to the liquid fuel. It is.

이러한 본 발명의 목적은 일측에 연료증발가스의 배출구가 형성되고, 내부 바닥면은 중앙의 가스출입공으로 갈수록 하향으로 경사지며, 상기 배출구와 가스출입공 사이의 내부에 증발가스를 상하 지그재그로 통과시키는 다수의 격막이 형성된 세퍼레이터를 구비하여 상기 연료탱크의 상부 몸체 내면에 설치하고, 상기 세퍼레이터 저면에는 롤오버밸브의 가스출구와 세퍼레이터의 가스출입공이 통하도록 롤오버밸브를 설치하므로서 달성된다.An object of the present invention is the discharge port of the fuel evaporation gas is formed on one side, the inner bottom surface is inclined downward toward the central gas exit hole, and the boil-off gas through the upper and lower zigzag in between the outlet and the gas entrance hole It is achieved by providing a separator having a plurality of diaphragms installed on the inner surface of the upper body of the fuel tank, and by installing a rollover valve on the bottom of the separator so that the gas outlet of the rollover valve and the gas inlet hole of the separator pass through.

이와같은 본 발명은 액상연료가 함유된 연료증발가스가 롤오버밸브를 통해 세퍼레이터로 들어간후 배출구를 향해 흘러갈시 다수의 격막에 부딪치면서 흘러가므로 이때 연료증발가스에 함유된 액상연료는 하향으로 떨어져 세퍼레이터의 바닥면에 형성된 가스출입공을 통해 롤오버밸브속으로 들어간후 다시 연료탱크로 리턴되므로서 상기목적을 효과적으로 달성할수 있다.In the present invention as described above, the fuel evaporation gas containing the liquid fuel enters the separator through the rollover valve and then flows into the separator while hitting a plurality of diaphragms so that the liquid fuel contained in the fuel evaporation gas falls downward. The above purpose can be effectively achieved by entering the rollover valve and returning to the fuel tank through the gas entrance hole formed at the bottom surface of the fuel cell.

이하, 본 발명의 상기 목적을 효과적으로 달성할 수 있는 바람직한 실시예의 기술구성 및 작용을 첨부한 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings the technical configuration and operation of a preferred embodiment that can effectively achieve the above object of the present invention.

도 2 는 본 발명에 따라 롤오버밸브와 세퍼레이터가 연료탱크내에 설치된 상태를 예시한 측면도이고, 도 3 은 본 발명에 따라 세퍼레이터와 롤오버밸브가 서로 결합된 상태를 예시한 요부 단면도이다.2 is a side view illustrating a state in which a rollover valve and a separator are installed in a fuel tank according to the present invention, and FIG. 3 is a cross-sectional view illustrating main parts illustrating a state in which a separator and a rollover valve are coupled to each other according to the present invention.

이와같은 본 발명은 연료탱크(100)내에서 생성된 연료증발가스를 가스입구(210)와 가스출구(220)가 형성된 롤오버밸브(200)를 통해 캐니스터(500)로 포집한 후 엔진의 연소실로 보내 연소되게 한 연료증발가스 억제장치에 있어서, 일측에 연료증발가스의 배출구(310)가 형성되고, 내부 바닥면(320)은 중앙의 가스출입공(321)으로 갈수록 하향으로 경사지며, 상기 배출구(310)와 가스출입공(321) 사이의 내부에 연료증발가스를 상하 지그재그로 통과시키는 다수의 격막(330)이 형성된 세퍼레이터(300)를 구비하여 상기 연료탱크(100)의 상부 몸체(110) 내면에 설치한다.As described above, the present invention collects the fuel evaporation gas generated in the fuel tank 100 into the canister 500 through the rollover valve 200 in which the gas inlet 210 and the gas outlet 220 are formed. In the fuel evaporation gas suppression apparatus for sending and burning, the outlet 310 of the fuel evaporation gas is formed on one side, the inner bottom surface 320 is inclined downward toward the central gas entrance hole 321, the outlet An upper body 110 of the fuel tank 100 is provided with a separator 300 having a plurality of diaphragms 330 formed therebetween so as to pass fuel evaporation gas up and down in a zigzag manner between the 310 and the gas entrance holes 321. Install inside

그리고 상기 세퍼레이터(300) 저면에는 롤오버밸브(200)의 가스출구(220)와 세퍼레이터(300)의 가스출입공(321)이 통하도록 롤오버밸브(200)를 설치하여 된 것을 특징으로 한다.In addition, a rollover valve 200 is installed on the bottom surface of the separator 300 so that the gas outlet 220 of the rollover valve 200 and the gas outlet hole 321 of the separator 300 communicate with each other.

이와같은 본 발명은 연료탱크(100)내에서 생성된 연료증발가스가 대기중으로 배출되어 대기를 오염시키는 것을 방지하기 위하여 연료탱크(100)에 캐니스터(500)와 연결되는 롤오버밸브(200)를 설치하여 연료증발가스를 캐니스터(500)로 보낸후 다시 엔진의 연소실로 보내 연료증발가스가 연소토록 하는 것은 일반적인 기술구성 이다.As described above, the present invention provides a rollover valve 200 connected to the canister 500 in the fuel tank 100 in order to prevent the fuel evaporation gas generated in the fuel tank 100 from being discharged into the atmosphere. The fuel evaporation gas is sent to the canister 500 and then sent back to the combustion chamber of the engine so that the fuel evaporation gas is combusted.

그러나 본 발명에서는 연료증발가스를 캐니스터(500)로 배출할때 연료증발가스에 함유된 액상연료는 배출시키지 않고, 연료증발가스만을 캐니스터(500)로 배출하여 캐니스터(500)가 액상연료에 의해 기능이 저하되거나 쉽게 고장나는 문제점을 용이하게 해결할 수 있는 것이다.However, in the present invention, when the fuel evaporation gas is discharged to the canister 500, the liquid fuel contained in the fuel evaporation gas is not discharged, and only the fuel evaporation gas is discharged to the canister 500 so that the canister 500 functions by the liquid fuel. This can be easily solved a problem that is degraded or easily broken.

즉, 본 발명은 도 2 내지 도 3에서와 같이 연료탱크(100)에 세퍼레이터(300)와 롤오버밸브(200)를 설치한 것으로 상기 세퍼레이터(300)는 일측에 연료증발가스가 빠져나가는 배출구(310)를 바닥면(320)에는 가스출입공(321)을 형성하고, 상기 배출구(310)와 가스출입공(321)사이에는 다수의 격막(330)을 형성하였다.That is, in the present invention, the separator 300 and the rollover valve 200 are installed in the fuel tank 100 as shown in FIGS. 2 to 3. The separator 300 has a discharge port 310 through which fuel evaporation gas escapes. In the bottom surface 320, a gas entrance hole 321 is formed, and a plurality of diaphragms 330 are formed between the outlet 310 and the gas entrance hole 321.

따라서 상기처럼 구성된 세퍼레이터(300)를 연료탱크(100)의 상부몸체(110)내면에 설치하고, 그 세퍼레이터(300)저면에 롤오버밸브(200)를 설치하는데 여기서 상기 롤오버밸브(200)를 설치할때에는 롤오버밸브(200)의 가스출구(220)가 세퍼레이터(300)의 가스출입공(321)과 통하도록 설치한다.Therefore, the separator 300 configured as described above is installed on the inner surface of the upper body 110 of the fuel tank 100, and the rollover valve 200 is installed on the bottom of the separator 300, where the rollover valve 200 is installed. The gas outlet 220 of the rollover valve 200 is installed to communicate with the gas inlet hole 321 of the separator 300.

이렇게 연료탱크(100)내에 세퍼레이터(300)와 롤오버밸브(200)를 설치하면 연료탱크(100)에서 생성된 연료증발가스는 롤오버밸브(200)의 가스입구(210)를 통해 롤오버밸브(200)속으로 들어간후 가스출구(220)를 거쳐 세퍼레이터(300)의 가스출입공(321)을 통해 세퍼레이터(300)속으로 들어간다.When the separator 300 and the rollover valve 200 are installed in the fuel tank 100, the fuel evaporation gas generated in the fuel tank 100 passes through the gas inlet 210 of the rollover valve 200. After entering the inside, the gas outlet 220 enters the separator 300 through the gas entrance hole 321 of the separator 300.

이후 세퍼레이터(300)속으로 유입된 연료증발가스는 배출구(310)를 향하여 흘러가는데 상기 세퍼레이터(300)내에는 다수의 격막(330)이 설치되어 있으므로 연료증발가스는 배출구(310)를 향하여 흘러갈시 다수의 격막(330)에 순차적으로 부딪 치면서 흘러가는데 여기서 연료증발가스는 격막(330)에 부딪칠때 연료증발가스에 함유되어 있던 액상연료는 하향으로 떨어지면서 분리되고, 순수한 액상연료만이 배출구(310)를 통해 캐니스터(500)로 흘러 들어가게 도는데 상기 격막(330)은 지그재그로 형성되어 있으므로 연료증발가스도 지그재그로 흘러가면서 격막(330)에 부딪치는 것이므로 액상연료의 분리효과가 더욱 좋아진다.Afterwards, the fuel evaporation gas introduced into the separator 300 flows toward the discharge port 310. Since the separator 300 has a plurality of diaphragms 330, the fuel evaporation gas flows toward the discharge port 310. When a plurality of diaphragm 330 sequentially flows while the fuel evaporation gas is separated from the liquid fuel contained in the fuel evaporation gas falling downward when it hits the diaphragm 330, only the pure liquid fuel discharge ( Since the diaphragm 330 is zigzag, the fuel evaporation gas also hits the diaphragm 330 while flowing into the zigzag, and thus the separation effect of the liquid fuel is improved.

이처럼 액상연료가 연료증발가스에서 분리되어 바닥면(320)으로 떨어지면 액상연료는 가스출입공(321)쪽으로 모이게 되는데 이는 상기 바닥면(320)이 가스출입공(321)쪽으로 갈수록 하향으로 경사져 있으므로 바닥면(320)에 떨어진 액상연료는 자연스럽게 가스출입공(321)방향으로 흘러 가스출입공(321)을 통해 롤오버밸브(200)의 가스출구(220)를 거쳐 롤오버밸브(200)속으로 들어간후 다시 롤오버밸브(200)의 가스입구(210)를 통해 연료탱크(100)내로 리턴되어 액상연료는 연료탱크(100)에 있는 연료와 혼합되는 것이다.As such, when the liquid fuel is separated from the fuel evaporation gas and falls to the bottom surface 320, the liquid fuel is collected toward the gas entrance hole 321, which is inclined downward toward the gas entrance hole 321. The liquid fuel dropped on the surface 320 naturally flows toward the gas inlet 321 and enters into the rollover valve 200 through the gas outlet 220 of the rollover valve 200 through the gas inlet 321. It is returned to the fuel tank 100 through the gas inlet 210 of the rollover valve 200 is mixed with the fuel in the fuel tank (100).

또한 본 발명은 세퍼레이터(300)의 바닥면(320)일측으로 가스유입공(322)을 형성하고, 상기 가스유입공(322)저면으로는 연료탱크의 압력이 설정압력 범위내 인지 여부에 따라 스프링(410)의 장력을 받는 볼(420)이 가스입구(430)를 개폐하는 안전밸브(400)를 설치하여 롤오버밸브(200)가 제대로 작동되지 않을 경우에는 안전밸브(400)를 통해 연료증발가스가 배출되도록 한 것이다.In addition, the present invention forms a gas inlet hole 322 on one side of the bottom surface 320 of the separator 300, the bottom of the gas inlet hole 322 spring according to whether the pressure of the fuel tank is within the set pressure range When the ball 420 receiving the tension of 410 is installed with a safety valve 400 for opening and closing the gas inlet 430, and the rollover valve 200 is not properly operated, fuel evaporation gas through the safety valve 400 is provided. Is to be discharged.

즉, 롤오버밸브(200)가 고장이나서 연료증발가스가 원활하게 배출되지 못해 연료탱크(100)내의 압력이 미리 설정된 압력범위보다 높게 올라갈 경우에는 안전밸브(400)가 작동되어 연료증발가스가 안전밸브(400)를 통해 배출될 수 있도록 한 것 이다.That is, when the rollover valve 200 is broken and the fuel evaporation gas is not discharged smoothly and the pressure in the fuel tank 100 rises higher than the preset pressure range, the safety valve 400 is operated so that the fuel evaporation gas is safe. It is to be discharged through the valve (400).

좀더 상세히 언급하면 상기 안전밸브(400)는 평상시에는 닫혀있는 상태에서 연료증발가스가 롤오버밸브(200)를 통해 빠져나가지 못해 연료탱크(100)의 압이 높아지면 연료증발가스가 안전밸브(400)의 가스입구(430)를 막고있던 볼(420)을 밀어내고 그 가스입구(430)를 통해 들어간후 세퍼레이터(300)의 가스유입공(321)을 거쳐 세퍼레이터(300)속으로 들어가 배출구(310)를 향하여 흘러가는 것이다.In more detail, when the safety valve 400 is normally closed, fuel evaporation gas does not escape through the rollover valve 200, so that the pressure of the fuel tank 100 increases, and the fuel evaporation gas safety valve 400. Push the ball 420 blocking the gas inlet 430 of the gas inlet 430 through the gas inlet 321 of the separator 300 enters into the separator 300 through the outlet 310 It is flowing toward the.

상기 안전밸브(400)의 볼(420)은 스프링(410)의 장력을 받는 것이므로 볼(420)이 상승될 경우에는 스프링(410)은 수축된 상태를 유지하고, 연료탱크(100)내의 압력이 낮아져 볼(420)이 상승되지 않을 경우에는 수축되었던 스프링(410)은 원상태로 탄발되어 볼(420)을 밀어주므로 상기 볼(420)은 가스입구(430)에 밀착된 상태를 유지하여 연료증발가스가 배출되지 못하도록 한다.Since the ball 420 of the safety valve 400 is tensioned by the spring 410, when the ball 420 is raised, the spring 410 remains in a contracted state, and the pressure in the fuel tank 100 is increased. When the ball 420 is not lowered and the ball 420 is not raised, the spring 410 that has been contracted is elastically pushed to push the ball 420 so that the ball 420 is kept in close contact with the gas inlet 430 so that the fuel evaporation gas may be reduced. Should not be released.

그리고 롤오버밸브(200)가 고장이 났을 경우에는 연료증발가스에서 분리된 액상연료도 리턴되지 못하고 세퍼레이터(300)내에 머물게 되는데 이때 많은 양의 액상연료가 가스유입공(322)을 막게되면 안전밸브(400)를 통해 연료증발가스가 세퍼레이터(300)로 유입되지 못하는 것이기 때문에 가스유입공(322)을 가스출입공(321)보다는 높은 위치의 바닥면(320)에 형성하므로서 바닥면(320)에 떨어지는 액상연료가 가스유입공(322)쪽으로는 흐르지 않도록 하여 액상연료가 가스유입공(322)을 막지않도록 하므로서 연료증발가스가 안전밸브(400)를 통해 세퍼레이터(300)내로 원활히 들어갈 수 있도록 한 것이다.When the rollover valve 200 is broken, the liquid fuel separated from the fuel evaporation gas is not returned but stays in the separator 300. At this time, when a large amount of the liquid fuel blocks the gas inlet hole 322, the safety valve ( Since the fuel evaporation gas does not flow into the separator 300 through the 400, the gas inlet 322 is formed on the bottom surface 320 at a higher position than the gas entrance hole 321, and thus falls on the bottom surface 320. The liquid fuel does not flow toward the gas inlet hole 322 so that the liquid fuel does not block the gas inlet hole 322 so that the fuel evaporation gas may smoothly enter the separator 300 through the safety valve 400.

이상과 같이 본 발명의 바람직한 실시 예를 설명하였으나 본 발명은 다양한 변화와 변경 및 균등물을 사용할 수가 있으며, 상기 실시 예를 적절히 변형하여 동일하게 응용할 수 있음이 명확하다. 따라서 상기 기재 내용은 하기 특허청구범위의 한계에 의해 정해지는 본 발명의 범위를 한정하는 것은 아니다.As described above, the preferred embodiment of the present invention has been described, but the present invention may use various changes, modifications, and equivalents, and it is clear that the above embodiments may be appropriately modified and applied in the same manner. Therefore, the above description does not limit the scope of the invention defined by the limitations of the following claims.

이상에서와 같이 본 발명은 연료증발가스가 캐니스터로 유입되기 연료탱크를 빠져나갈때 연료증발가스에 함유된 액상연료는 빠져나가지 않고 순수한 연료증발가스만이 캐니스터로 유입되어 액상연료에 의한 캐니스터의 오작동과 캐니스터의 고장을 미연에 방지할 수 있는 매우 유용한 발명이다.As described above, in the present invention, when the fuel evaporation gas flows out into the canister, the liquid fuel contained in the fuel evaporation gas does not exit, and only pure fuel evaporation gas flows into the canister, thereby causing the canister to malfunction. It is a very useful invention that can prevent the failure of the canister in advance.

Claims (3)

일측에 연료증발가스의 배출구(310)가 형성되고, 내부 바닥면(320)은 중앙의 가스출입공(321)으로 갈수록 하향으로 경사지며, 상기 배출구(310)와 가스출입공(321) 사이의 내부에 연료증발가스를 상하 지그재그로 통과시키는 다수의 격막이 형성된 세퍼레이터(300)를 구비하여 상기 연료탱크(100)의 상부 몸체(110) 내면에 설치하고, The outlet 310 of the fuel evaporation gas is formed on one side, the inner bottom surface 320 is inclined downward toward the central gas entrance hole 321, between the outlet 310 and the gas entrance hole 321 It is provided on the inner surface of the upper body 110 of the fuel tank 100 having a separator 300 having a plurality of diaphragm formed therein to pass the fuel evaporation gas in the upper and lower zigzag, 상기 세퍼레이터(300) 저면에는 롤오버밸브(200)의 가스출구(220)와 세퍼레이터(300)의 가스출입공(321)이 통하도록 하여 연료탱크(100) 내에서 생성된 연료증발가스가 가스입구(210)와 가스출구(220)가 형성된 롤오버밸브(200)를 통해 캐니스터(500)로 포집된 후 엔진의 연소실로 보내져 연소되게 한 연료증발가스 억제장치에 있어서,The gas outlet 220 of the rollover valve 200 and the gas inlet hole 321 of the separator 300 communicate with the bottom surface of the separator 300 so that the fuel evaporation gas generated in the fuel tank 100 passes through the gas inlet ( In the fuel evaporation gas suppression apparatus that is collected by the canister 500 through the rollover valve 200 formed with the 210 and the gas outlet 220 is sent to the combustion chamber of the engine to be combusted, 상기 세퍼레이터(300)의 바닥면(320) 일측에는 가스유입공(322)을 형성하고, 상기 가스유입공(322) 저면에는 연료탱크내의 압력이 설정압력 범위내 인지의 연부에 따라 스프링(410)의 장력을 받는 볼(420)이 가스입구(430)를 개폐하는 안전밸브(400)를 설치한 것을 특징으로 하는 자동차의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치.A gas inlet hole 322 is formed at one side of the bottom surface 320 of the separator 300, and a spring 410 is formed at the bottom of the gas inlet hole 322 according to the edge of whether the pressure in the fuel tank is within a set pressure range. Liquid fuel removal device contained in the fuel evaporation gas in the fuel tank of the vehicle, characterized in that the ball 420 is subjected to a tension of the safety valve 400 is installed to open and close the gas inlet 430. 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 세퍼레이터(300)의 바닥면(320)에 형성되는 가스유입공(322)은, The gas inlet hole 322 formed in the bottom surface 320 of the separator 300, 가스출입공(321) 보다 더 높게 위치하도록 바닥면(320)에 형성한 것을 특징으로 하는 자동차의 연료탱크내 연료증발가스에 함유된 액상연료 제거장치Liquid fuel removal device contained in the fuel evaporation gas in the fuel tank of the vehicle, characterized in that formed on the bottom surface 320 to be higher than the gas entrance hole 321
KR1020060093270A 2006-09-26 2006-09-26 Fuel liguid removal device for a fuel vapor of a fuel tank for automobile KR100774244B1 (en)

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Publication number Priority date Publication date Assignee Title
WO2015127477A1 (en) * 2014-02-24 2015-08-27 Eaton Corporation Fuel tank liquid vapor discriminator with integrated over-pressure and make-up air valves
CN110254217A (en) * 2019-06-12 2019-09-20 东风亚普汽车部件有限公司 Fuel tank gasoline isolating device

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KR19990029676U (en) * 1997-12-29 1999-07-26 정몽규 Vehicle fuel leakage valve
KR19990029737U (en) * 1997-12-29 1999-07-26 정몽규 Vehicle fuel leakage valve
KR20050061895A (en) * 2003-12-18 2005-06-23 기아자동차주식회사 A fuel inflow preventing apparatus in fuel tank in vehicle

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Publication number Priority date Publication date Assignee Title
KR19990029676U (en) * 1997-12-29 1999-07-26 정몽규 Vehicle fuel leakage valve
KR19990029737U (en) * 1997-12-29 1999-07-26 정몽규 Vehicle fuel leakage valve
KR20050061895A (en) * 2003-12-18 2005-06-23 기아자동차주식회사 A fuel inflow preventing apparatus in fuel tank in vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015127477A1 (en) * 2014-02-24 2015-08-27 Eaton Corporation Fuel tank liquid vapor discriminator with integrated over-pressure and make-up air valves
CN110254217A (en) * 2019-06-12 2019-09-20 东风亚普汽车部件有限公司 Fuel tank gasoline isolating device

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