KR200221354Y1 - Fuel backflow prevention structure of automobile fuel tank - Google Patents

Fuel backflow prevention structure of automobile fuel tank Download PDF

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Publication number
KR200221354Y1
KR200221354Y1 KR2019970041253U KR19970041253U KR200221354Y1 KR 200221354 Y1 KR200221354 Y1 KR 200221354Y1 KR 2019970041253 U KR2019970041253 U KR 2019970041253U KR 19970041253 U KR19970041253 U KR 19970041253U KR 200221354 Y1 KR200221354 Y1 KR 200221354Y1
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South Korea
Prior art keywords
fuel
filler neck
exhaust hole
fuel tank
backflow prevention
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KR2019970041253U
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Korean (ko)
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KR19990028617U (en
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이병철
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이계안
현대자동차주식회사
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Priority to KR2019970041253U priority Critical patent/KR200221354Y1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K2015/0458—Details of the tank inlet
    • B60K2015/0477—Details of the filler neck tank side
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

본 고안은 자동차용 연료 탱크의 연료 역류 방지구조에 관한 것이며, 상세하게는 연료 탱크에 연료를 주입할 때의 연료 역류 방지구조에 관한 것으로서, 연료를 규정용량 이상으로 주입할 때 연료가 연료 필러 넥으로 넘치는 것을 방지할 수 있도록 한 것이다.The present invention relates to a fuel backflow prevention structure of an automotive fuel tank, and more particularly, to a fuel backflow prevention structure when fuel is injected into a fuel tank. It is to prevent the overflow.

본 고안은 연료 탱크 본체(1)에 호스(2)를 연결하여 상기 호스(2)에 연료 필러 넥(3)을 연렬함과 동시에 연료 필러 넥(3)의 입구에 설치되는 리테이너(4)에 배기공(5)을 형성하고, 상기 레티이너(4)에 선단에 진공센서(7)가 설치된 주유건(6)을 삽입하여 연료를 주입하며, 상기 배기공(5) 상부의 연료 필러 넥(3)에 레버(8)를 힌지 결합하여 상기 레버(8)에 배기공 폐쇄벨브(9)와 진공센서 오프 밸브(10)를 설치하여서 된 것이다.The present invention connects a hose (2) to the fuel tank body (1) in series with the fuel filler neck (3) on the hose (2) and at the same time the retainer (4) installed at the inlet of the fuel filler neck (3) The exhaust hole 5 is formed, a fuel injection neck 6 having a vacuum sensor 7 installed at the distal end of the retiner 4 is inserted to inject fuel, and a fuel filler neck (above the exhaust hole 5) 3) by hinge coupling the lever 8 to the exhaust hole closing valve 9 and the vacuum sensor off valve 10 to the lever (8).

Description

자동차용 연료 탱크의 연료 역류 방지 구조Fuel backflow prevention structure of automobile fuel tank

본 고안은 자동차용 연료 탱크의 연료 역류 방지구조에 관한 것이며, 상세하게는 연료 탱크에 연료를 주입할 때의 연료 역류 방지구조에 관한 것이다.The present invention relates to a fuel backflow prevention structure of an automotive fuel tank, and more particularly, to a fuel backflow prevention structure when fuel is injected into a fuel tank.

주지하는 바와 같이 자동차용 연료 탱크는 연료 탱크 본체에 호스를 연결하여 상기 호스에 연료 필러 넥을 연결하고, 연료 탱크 본체와 연료 필러 넥 사이에 레벨링 튜브를 연결하여 상기 튜브의 하단을 연료 탱크 본체의 팽창공간의 규정용량 유면 부위에 개구되게 하거나, 연료 탱크 본체의 상부에 형성된 팽창공간과 증발가스 제어장치의 캐니스터 사이에 증발가스 공급관을 연결함과 동시에 상기 증발 가스 공급관의 연료 탱크 본체 연결위치에 벤트 밸브를 설치하며, 주유기의 주유건에는 진공센서를 설치하여 주유건을 연료 필러 넥에 삽입하고 연료 탱크 본체에 연료를 주입할 때 증발가스는 레벨링 튜브를 순환하거나 벤트 밸브의 개방에 의하여 증발가스가 캐니스터 측으로 이송되어 연료 탱크 본체의 압력을 감소시키면서 연료를 주입하고 있다.As is well known, a fuel tank for an automobile has a hose connected to a fuel tank body to connect a fuel filler neck to the hose, and a leveling tube is connected between the fuel tank body and the fuel filler neck to connect the lower end of the tube to the fuel tank body. The boil-off opening is provided at the surface of the prescribed capacity of the expansion space or between the expansion space formed on the upper portion of the fuel tank body and the canister of the evaporative gas control device, and at the same time, the vent is connected to the fuel tank body connection position of the evaporating gas supply pipe. Valve is installed, and the gas tank of the lubricator is equipped with a vacuum sensor to insert the gas tank into the fuel filler neck, and when fuel is injected into the fuel tank body, the boil-off gas circulates through the leveling tube or by opening the vent valve. It is transferred to the canister side to inject fuel while reducing the pressure of the fuel tank body. .

한편 장거리 주행시 등에는 연료를 규정용량 이상으로 주입하는 경유가 많은 바, 이때 연료가 규정용량 이상으로 주입되면 레벨링 튜브의 하단이 유면에 의하여 폐쇄되거나 벤트 밸브가 폐쇄되면 증발가스가 배출되지 못하므로 연료 탱크 본체의 내부압력이 증가하고, 연료 탱크 본체의 내부압력이 증가되면 연료가 연료 필러 넥으로 역류하여 상기 역류된 연료가 진공센서를 “오프”시키므로서 주유가 중단되도록 되어 있는 것이다.On the other hand, in case of long distance driving, there are many diesel fuels that inject the fuel over the specified capacity.In this case, when the fuel is injected above the specified capacity, the bottom of the leveling tube is closed by oil level or when the vent valve is closed, the fuel cannot be discharged. When the internal pressure of the tank body increases and the internal pressure of the fuel tank body increases, the fuel flows back into the fuel filler neck so that the refluxed fuel "offs" the vacuum sensor so that the fueling is stopped.

상기와 같이 연료를 규정용량 이상으로 주입하여 연료가 연료 필러 넥으로 역류되어 주유를 중단할 때 증가된 내부 압력과 역류 압력의 관성에 의하여 연료 필러 넥으로 넘치게 되어 하우징 주위 등을 오염시켜 보디의 도막을 손상시키거나 에너지를 낭비하는 등의 문제점이 있는 것이다.When the fuel is injected above the prescribed capacity and the fuel flows back to the fuel filler neck and stops refueling, it overflows to the fuel filler neck due to the inertia of the increased internal pressure and the backflow pressure to contaminate the surroundings of the housing, etc. There is a problem such as damaging the energy or wasting energy.

본 고안은 상기한 실정을 감안하여, 연료를 규정용량 이상으로 주입할 때 연료가 연료 필러 넥으로 넘치는 것을 방지할 수 있는 자동차용 연료 탱크의 연료 역류 방지구조를 제공하는 것을 목적으로 한다.The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fuel backflow prevention structure of an automotive fuel tank which can prevent the fuel from overflowing into the fuel filler neck when the fuel is injected over a prescribed capacity.

상기한 목적을 달성하기 위하여, 본 고안은 연료 탱크 본체에 연결되는 연료 필러 넥의 입구에 설치되는 리테이너에 배기공을 형성하고, 상기 배기공 상부의 연료 필러 넥에 레버의 상단을 힌지 결합하여 상기 레버에 배기공 폐쇄밸브와 진공센서 오프 밸브를 설치하여서 된 것이다.In order to achieve the above object, the present invention forms an exhaust hole in the retainer is installed in the inlet of the fuel filler neck connected to the fuel tank body, and hinged to the upper end of the lever hinged to the fuel filler neck of the upper exhaust hole This is done by installing the exhaust hole closing valve and the vacuum sensor off valve in the lever.

도 1은 연료 탱크의 사시도.1 is a perspective view of a fuel tank;

도 2는 도 1의 A-A 선에 따른 본 고안의 실시예의 단면도.2 is a cross-sectional view of an embodiment of the present invention along the line A-A of FIG.

도 3은 본 고안의 실시예의 요부 사시도.3 is a perspective view of main parts of an embodiment of the present invention;

* 도면의 주요부분에 사용된 부호의 설명 *Explanation of symbols used in the main part of the drawing

1 : 연료 탱크 본체 3 : 연료 필러 넥1: fuel tank body 3: fuel filler neck

4 : 리테이너 5 : 배기공4: retainer 5: exhaust hole

6 : 주유건 7 : 진공센서6: oil supply 7: vacuum sensor

8 : 레버 9 : 배기공 폐쇄밸브8 lever 9 exhaust valve closing valve

10 : 진공센서 오프 밸브10: vacuum sensor off valve

본 고안은 도 1 내지 도 3에 도시한 바와 같이 연료 탱크 본체(1)에 호스(2)를 연결하여 상기 호스(2)에 연료 필러 넥(3)을 연결함과 동시에 연료 필러 넥(3)의 입구에 설치되는 리테이너(4)에 배기공(5)을 형성하고, 상기 리테이너(4)에 선단에 진공센서(7)가 설치된 주유건(6)을 삽입하여 연료를 주입하며, 상기 배기공(5) 상부의 연료 필러 넥(3)에 레버(8)를 힌지 결합하여 상기 레버(8)에 배기공 폐쇄밸브(9)와 진공센서 오프 밸브(10)를 설치하여서 된 것이다.The present invention connects the fuel filler neck 3 to the hose 2 by connecting the hose 2 to the fuel tank body 1, as shown in FIGS. 1 to 3, and at the same time the fuel filler neck 3. An exhaust hole 5 is formed in the retainer 4 installed at the inlet of the fuel cell, and a fuel injector 6 having a vacuum sensor 7 installed at the distal end thereof is inserted into the retainer 4 to inject fuel. (5) The lever 8 is hingedly coupled to the upper fuel filler neck 3 so that the exhaust hole closing valve 9 and the vacuum sensor off valve 10 are provided on the lever 8.

이상과 같은 본 고안은 연료를 규정이상 용량으로 주입할 때 레벨링 튜브 하단 또는 벤트 밸브가 폐쇄되어 증발가스가 상기 레벨링 튜브 또는 벤트 밸브 측으로 방출되지 못하며 연료 탱크 본체의 내부 압력 즉 증발가스와 연료의 압력이 증가되며, 연료를 계속 주입함에 따라 상기 증발가스와 연료는 연료 필러 넥(3) 측으로 역류하고 증발가스는 비중이 가벼우므로 연료보다 먼저 배기공(5)을 통하여 대기로 방출되는 것이다.The present invention as described above is when the lower level of the leveling tube or the vent valve is closed when the fuel is injected to the specified capacity, the evaporation gas is not discharged to the leveling tube or vent valve side, the internal pressure of the fuel tank body, that is, the pressure of the evaporation gas and the fuel As the fuel is continuously injected, the boil-off gas and the fuel flow back to the fuel filler neck 3 and the boil-off gas is discharged to the atmosphere through the exhaust hole 5 before the fuel because the specific gravity is light.

상기와 증발가스가 배기공(5)을 통하여 방추될 때 배기공(5)은 그 단면적을 적게 하였으므로 유속이 증가함에 따라 압력이 감소되기 때문에 배기공(5) 주위에 부압이 발생되고 상기 부압은 배기공 폐쇄밸브(9)를 흡인함과 동시에 레버(8)를 회전시켜 레버(8)에 설치된 진공센서 오프 밸브(10)가 진공센서(7)를 “오프”시키므로서 주유가 중단되는 것이다.When the boil-off gas is discharged through the exhaust hole 5, the exhaust hole 5 has a small cross-sectional area, so that the pressure decreases as the flow rate increases, so that a negative pressure is generated around the exhaust hole 5 and the negative pressure is At the same time as the suction of the exhaust hole closing valve 9, the lever 8 is rotated so that the vacuum sensor off valve 10 installed in the lever 8 “offs” the vacuum sensor 7 so that fueling is stopped.

상기와 같이 증발가스와 연료가 연료 필러 넥(3)으로 역류할 때 그 비중이 가벼운 증발가스가 먼저 배기공(5)으로 방출되면서 진공센서(7)를 “오프”시키면 연료의 주입이 중단되고 연료의 압력 및 그 역류압력의 관성력은 연료 필러 넥(3)의 입구에 도달하기 전에 감쇠되는 것이다. 그리고 그 압력의 감쇠가 미약하여 연료 필러 넥(3)의 입구에 도달되어도 배기공(5)은 폐쇄되어 있으므로 연료가 연료 필러 넥(3)으로 넘치는 것이 방지되어 연료 필러 넥 하우징의 주위의 오염이 방지되는 것이다.As described above, when the boil-off gas and the fuel flow back to the fuel filler neck 3, the light-boiling boil-off gas is first released to the exhaust hole 5, and when the vacuum sensor 7 is “off”, the injection of fuel is stopped. The inertia force of the pressure of the fuel and its countercurrent pressure is attenuated before reaching the inlet of the fuel filler neck 3. Since the exhaust hole 5 is closed even when the pressure attenuation is weak and reaches the inlet of the fuel filler neck 3, the fuel is prevented from overflowing to the fuel filler neck 3, thereby preventing contamination of the surroundings of the fuel filler neck housing. To be prevented.

이상과 같이 본 고안은 연료 탱크 본체에 연료를 규정용량 이상으로 주입할 때 리테이너에 배기공을 형성하고, 상기 배기공 상부의 연료 필러 넥에 레버를 힌지 결합하여 레버에 배기공 폐쇄밸브와 진공센서 오프 밸브를 설치하여서 연료 탱크 본체에 연료를 규정용량 이상으로 주입할 때 증발가스가 먼저 배기공으로 방출함에 따라 그 부압에 의하여 배기공을 폐쇄함과 동시에 진공센서를 “오프”시켜 연료의 주입을 중단토록 하였기 때문에 연료가 연료 필러 넥의 입구에 도달하기 전에 그 압력 등을 감쇠하여 연료가 연료 필러 넥으로 넘치는 것이 방지되므로 연료 필러 넥 하우징 주위의 오염과 도막의 손상을 방지하고 에너지를 절약할 수 있는 것이다.As described above, the present invention forms an exhaust hole in the retainer when fuel is injected into the fuel tank body above a prescribed capacity, and hinges are coupled to the fuel filler neck at the upper portion of the exhaust hole to close the exhaust valve closing valve and the vacuum sensor. When injecting fuel into the fuel tank main body by installing an off valve, when the boil-off gas is discharged into the exhaust hole first, the exhaust hole is closed by the negative pressure and the vacuum sensor is turned off to stop the fuel injection. This prevents fuel from overflowing into the fuel filler neck before the fuel reaches the inlet of the fuel filler neck, preventing fuel from overflowing into the fuel filler neck, thus preventing contamination of the fuel filler neck housing and damaging the coating film and saving energy. will be.

또한 연료가 주유건에 묻지 않으므로 주유건을 뺄 때 연료가 보디에 낙하되는 것도 방지할 수 있어 보디의 오염 등을 양호하게 방지할 수 있는 것이다.In addition, since the fuel does not adhere to the main fuel gun, it is possible to prevent the fuel from falling onto the body when the main fuel is removed, thereby preventing contamination of the body.

Claims (1)

연료 탱크 본체에 연결되는 연료 필러 넥의 입구에 설치되는 리테이너에 배기공을 형성하고, 상기 배기공 상부의 연료 필러 넥에 레버의 상단을 힌지 결합하여 상기 레버에 배기공 폐쇄밸브와 진공센서 오프 밸브를 설치하여서 된 자동차용 연료 탱크의 연료 역류 방지구조.An exhaust hole is formed in the retainer installed at the inlet of the fuel filler neck connected to the fuel tank body, and the exhaust hole closing valve and the vacuum sensor off valve are connected to the lever by hingely coupling the upper end of the lever to the fuel filler neck above the exhaust hole. Fuel backflow prevention structure of the fuel tank for cars made by installing a.
KR2019970041253U 1997-12-27 1997-12-27 Fuel backflow prevention structure of automobile fuel tank KR200221354Y1 (en)

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KR100902735B1 (en) * 2007-10-04 2009-06-15 지엠대우오토앤테크놀로지주식회사 Soul breast terrain fuel tank Diesel rolling stock

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