KR0174438B1 - Air vent system of fuel line - Google Patents

Air vent system of fuel line Download PDF

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Publication number
KR0174438B1
KR0174438B1 KR1019940019646A KR19940019646A KR0174438B1 KR 0174438 B1 KR0174438 B1 KR 0174438B1 KR 1019940019646 A KR1019940019646 A KR 1019940019646A KR 19940019646 A KR19940019646 A KR 19940019646A KR 0174438 B1 KR0174438 B1 KR 0174438B1
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South Korea
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fuel
air
fuel tank
engine
valve
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KR1019940019646A
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Korean (ko)
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KR960007234A (en
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김중규
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전성원
현대자동차주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K15/00Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03Fuel tanks
    • B60K15/077Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation

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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)
  • Fuel-Injection Apparatus (AREA)

Abstract

디젤엔진 차량에서 연료계통에 혼입된 공기를 자동으로 배출할 수 있는 연료 공급라인의 공기배출장치는 연료공급밸브를 통해 인젝션펌프로 공급되는 연료를 저장하는 연료탱크와, 내부에는 연료펌프가 내장되어 있고 연료라인에 포함된 공기를 외부로 방출하는 공기방출공을 지닌 보조연료탱크와, 보조연료탱크로부터 공급되는 연료를 인젝션펌프로 보내는 한편, 연료중에 함유된 공기를 보조연료탱크로 리턴시켜 공기방출공을 통해 배출하는 혼기방지밸브와, 보조연료탱크에 연료를 공급하는 연료보층수단과, 인젝션펌프를 통해 분사노즐에 공급되고 남은 연료를 연료탱크로 리턴시키는 연료회수밸브로 구성된다.The air discharge device of the fuel supply line that can automatically discharge the air mixed in the fuel system in the diesel engine vehicle is a fuel tank for storing the fuel supplied to the injection pump through the fuel supply valve, and a fuel pump inside Fuel tank, which has an air discharge hole for discharging the air contained in the fuel line to the outside, and sends fuel supplied from the auxiliary fuel tank to the injection pump, and returns the air contained in the fuel to the auxiliary fuel tank to discharge the air. An anti-fog valve discharged through the ball, a fuel holding means for supplying fuel to the auxiliary fuel tank, and a fuel recovery valve for returning the remaining fuel supplied to the injection nozzle through the injection pump to the fuel tank.

Description

연료공급라인의 공기 배출장치Air exhaust device of fuel supply line

제1도는 본 발명의 공기배출장치의 계통도.1 is a system diagram of an air discharge device of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 엔진 12 : 연료탱크10: engine 12: fuel tank

14 : 연료공급밸브 16 : 연료회수밸브14: fuel supply valve 16: fuel recovery valve

20 : 보조연료탱크 22 : 공기배출공20: auxiliary fuel tank 22: air discharge hole

30 : 혼기방지밸브 32 : 연료보충밸브30: anti-fog valve 32: fuel filler valve

34 : 연료주입구34: fuel inlet

본 발명은 차량에서 사용하는 연료공급라인의 공기배출장치에 관한 것으로, 특히 디젤엔진 차량에서 연료계통에 혼입된 공기를 자동으로 배출할 수 있는 연료 공급라인의 공기배출장치에 관한 것이다.The present invention relates to an air discharge device for a fuel supply line for use in a vehicle, and more particularly to an air discharge device for a fuel supply line that can automatically discharge the air mixed in the fuel system in a diesel engine vehicle.

디젤엔진의 연료장치는 연료탱크내의 연료를 인젝션펌프로 보낸 다음, 엔진의 운전상태에 따라 연료의 분사량 및 분사시간을 제어하여 분사노즐을 통해 연소실로 공급한다. 연소실내로 연료가 공급되는 과정을 좀더 상세히 살펴보면, 연료탱크내의 연료는 인젝션펌프에 장착된 연료공급펌프(fuel feed pump)에 의해 흡인되어 연료여과기에서 여과된후, 인젝션펌프의 플런져에 의해 고압으로 가압되어 인젝션파이프를 통해 분사노즐로 공급되어 연소실내로 분사된다.The fuel device of the diesel engine sends the fuel in the fuel tank to the injection pump, and then controls the injection amount and injection time of the fuel according to the operating state of the engine and supplies the fuel to the combustion chamber through the injection nozzle. Looking at the process of supplying fuel into the combustion chamber in more detail, the fuel in the fuel tank is aspirated by a fuel feed pump mounted on the injection pump and filtered in the fuel filter, and then the high pressure by the plunger of the injection pump Pressurized by the injection pipe is supplied to the injection nozzle through the injection pipe and injected into the combustion chamber.

이때, 인젝션펌프에서 가압된 연료가 분사압이 되어 분사노즐을 통해 연소실에 분사된후에, 남은 연료는 리턴파이프를 경유하여 연료탱크내로 복귀하게 된다.At this time, after the fuel pressurized by the injection pump becomes the injection pressure and is injected into the combustion chamber through the injection nozzle, the remaining fuel is returned to the fuel tank via the return pipe.

디젤엔진의 생산현장에서 엔진을 완전히 조립한후나, 수리후에는 연료계통에 연료가 전혀없고 공기만 있거나 또는, 공기와 연료가 혼입되어 있게 된다.After the engine is completely assembled or repaired at the production site of the diesel engine, there is no fuel in the fuel system and only air, or air and fuel are mixed.

따라서, 현재까지는 연료계통에 공기를 배출시키기 위해서 인젝션펌프에 장착된 연료공급펌프를 수동으로 펌핑시켜 공기를 배출하고 연료를 채워 넣는다. 이때, 수동으로 펌핑하는데는 많은 노력이 소요되며, 또 공기가 완전히 배출되지 않을 경우에는 엔진시동이 어렵거나 시동모터가 소손될 우려가 있는 한편, 수동펌핑을 쉽게하기 위해 연료여과기의 공기배출공을 열어 놓으므로 인해 연료가 외부로 배출되어 연료의 낭비 및 주변환경의 오염문제가 생기게 된다.Therefore, to date, in order to discharge air into the fuel system, the fuel supply pump mounted on the injection pump is manually pumped to discharge the air and fill the fuel. At this time, manual pumping takes a lot of effort, and if the air is not completely discharged, the engine may be difficult to start or the starting motor may be burned. Because it is open, the fuel is discharged to the outside, which causes fuel waste and pollution of the surrounding environment.

이러한 문제점을 감안하여 본 발명의 목적은 엔진조립후 또는, 수리후 엔진시동을 위해 자동으로 연료공급라인에 공기를 자동배출시키고 연료를 채워 넣는 공기배출장치를 제공하는데 있다.In view of these problems, an object of the present invention is to provide an air discharge device for automatically discharging air to a fuel supply line and refilling fuel for engine startup after engine assembly or after repair.

상술한 목적을 달성하기 위하여 본 발명은, 연소실로 공급되는 연료를 저장하는 연료탱크와, 엔진정상작동시 연료탱크의 연료를 엔진에 공급하는 연료공급밸브와, 연료펌프가 내장되어 있고 연료계통의 공기를 배출하는 공기방출공을 지닌 보조연료탱크와, 엔진정상 작동중에 보조연료탱크로부터 공기가 연료계통으로 혼입되는 것을 방지하는 혼기방지밸브와, 엔진정상 작동중 보조연료탱크에 연료를 보충하는 연료보충밸브와, 엔진정상 작동중에 보조연료탱크로부터 공기가 연료계통으로 혼입되는 것을 방지하는 혼기방지밸브와, 엔진정상 작동중 보조연료탱크에 연료를 보충하는 연료보충밸브와, 엔진정상 작동중 연소실에 분사하고 남은 연료를 연료탱크로 리턴시키는 연료회수밸브와, 연료계통내의 압력을 일정압력 이하로 유지하는 감압밸브로 구성되는 연료공급라인의 공기배출장치를 제공한다.In order to achieve the above object, the present invention is a fuel tank for storing the fuel supplied to the combustion chamber, a fuel supply valve for supplying the fuel of the fuel tank to the engine during normal operation of the engine, a fuel pump is built-in Auxiliary fuel tank with air releasing holes to discharge air, Anti-air valve to prevent air from entering the fuel system from auxiliary fuel tank during normal operation of engine, Fuel supplementing fuel to auxiliary fuel tank during normal engine operation A supplementary valve, an anti-air valve to prevent air from entering the fuel system from the auxiliary fuel tank during normal operation of the engine, a fuel supplement valve to replenish the auxiliary fuel tank with fuel during normal engine operation, and a combustion chamber during normal engine operation. A fuel recovery valve for returning the remaining fuel to the fuel tank and a pressure reducing valve for keeping the pressure in the fuel system below a certain pressure. It provides an air discharge device of the fuel supply line consisting of.

다음에는 첨부된 도면을 참조하여 본 발명의 바람직한 실시예에 따른 연료공급라인의 공기배출장치에 대하여 상세히 설명하기로 한다.Next, with reference to the accompanying drawings will be described in detail with respect to the air discharge device of the fuel supply line according to an embodiment of the present invention.

제1도는 본 발명의 일실시예에 따른 공기배출장치의 개략적인 계통도이다. 본 발명의 연료공급라인의 공기배출장치는 정상작동시 엔진(10)의 연료계통으로 연료를 공급하는 주연료라인과, 연료라인에 공기가 혼입되었을 경우 공기를 배출시키는 보조연료라인으로 구분할 수 있다.1 is a schematic system diagram of an air discharge device according to an embodiment of the present invention. The air discharge device of the fuel supply line of the present invention may be divided into a main fuel line for supplying fuel to the fuel system of the engine 10 during normal operation, and a secondary fuel line for discharging air when air is mixed in the fuel line. .

주연료라인은 연료파이프를 경유하여 엔진(10)의 연료계통으로 공급되는 연료를 저장하는 연료탱크(12)와, 엔진(10)의 연료계통으로부터 공급되는 연료를 선택적으로 차단하는 연료공급밸브(14)와, 연소실에 분사되고 남은 연료가 리턴 파이프를 경유하여 연료탱크내(12)로 복귀하도록 하는 연료회수밸브(16)로 구성된다.The main fuel line includes a fuel tank 12 for storing fuel supplied to the fuel system of the engine 10 via the fuel pipe, and a fuel supply valve for selectively blocking fuel supplied from the fuel system of the engine 10 ( 14) and a fuel recovery valve 16 for allowing fuel remaining after being injected into the combustion chamber to be returned to the fuel tank 12 via the return pipe.

엔진조립시 연료라인에 함유되어 있는 공기를 배출시키는 보조연료라인은 내장된 연료펌프(P)를 구동시켜 엔진의 연료계통으로 연료를 압송하는 한편, 공기를 외부로 방출하는 공기배출공(22)을 지닌 보조연료탱크(20)와, 이 보조연료탱크(20)로부터 연료파이프를 통해 엔진(10)의 연료계통으로 공급되는 연료중에 공기가 혼입되는 것을 방지하는 혼기방지밸브(30)와, 보조연료탱크(20)내의 연료가 항상 일정하게 유지되도록 하는 연료보충수단으로 구성된다.Auxiliary fuel line for discharging the air contained in the fuel line when assembling the engine drives the built-in fuel pump (P) to pump fuel into the fuel system of the engine, while the air discharge hole 22 for discharging air to the outside Auxiliary fuel tank (20) having a; and an anti-hybridization valve (30) for preventing air from being mixed in the fuel supplied from the auxiliary fuel tank (20) to the fuel system of the engine (10) through the fuel pipe; It is composed of a fuel replenishment means to ensure that the fuel in the fuel tank 20 is always kept constant.

또한, 보조연료라인에는 보조연료탱크(20)로부터 엔진(10)의 연료계통으로 공급되는 연료의 압력을 확인하기 위한 압력게이지(24)와, 일정한값 이하로 압력을 유지하기 위한 감압밸브(26)가 설치되며, 상기 감압밸브(26)의 손상을 방지하며, 그에대한 역류를 방지하기 위한 역지밸브(28)도 추가로 포함된다.In addition, the auxiliary fuel line has a pressure gauge 24 for checking the pressure of the fuel supplied from the auxiliary fuel tank 20 to the fuel system of the engine 10, and a pressure reducing valve 26 for maintaining the pressure below a predetermined value. ) Is installed, and further includes a check valve 28 to prevent damage to the pressure reducing valve 26 and to prevent backflow thereof.

이와같은 구성을 지닌 연료공급라인의 공기배출장치에 대한 작동원리를 설명하면 다음과 같다.The operation principle of the air discharge device of the fuel supply line having such a configuration is as follows.

조립라인이나 또는 정비공장에서 엔진을 조립한 후, 최초로 엔진을 시동하기에 앞서서 연료공급배관을 연결한 다음 보조연료탱크(20)내에 내장된 연료펌프(P)를 구동시킨다. 이 연료펌프(P)의 구동에 따라 공급되는 연료는 혼기방지밸브(30)를 거쳐 연료공급라인으로 유입 됨에 따라, 연료와 엔진(10)의 연료계통에 들어 있는 공기가 연료보충밸브(32)를 경유하여 보조연료탱크(20)에 회수되므로, 결국에는 엔진(10)의 연료계통내의 공기는 보조연료탱크(20)로 이동되어 공기배출공(22)으로 배출되며, 엔진(10)의 연료계통에는 연료가 가득 채워지게 된다.After assembling the engine in the assembly line or maintenance shop, the fuel supply pipe is connected prior to starting the engine for the first time, and then the fuel pump P embedded in the auxiliary fuel tank 20 is driven. As the fuel supplied by the driving of the fuel pump P flows into the fuel supply line via the anti-fog valve 30, the air in the fuel system and the fuel system of the engine 10 is supplied to the fuel refill valve 32. Since it is recovered to the auxiliary fuel tank 20 via the air, eventually the air in the fuel system of the engine 10 is moved to the auxiliary fuel tank 20 is discharged to the air discharge hole 22, the fuel of the engine 10 The system will be full of fuel.

이때, 혼기방지밸브(30), 연료보충밸브(32)는 열린상태이고, 연료회수밸브(16), 연료공급밸브(14)는 닫힌상태로 조작하며, 또한 압력게이지(24)를 통해 연료공급라인의 압력을 확인할 수 있고, 보조연료탱크(20)의 연료로 엔진의 연료계통을 채웠으므로 보조연료탱크(20)에는 그만큼의 연료가 소비된다.At this time, the anti-air valve 30, the fuel supplement valve 32 is in an open state, the fuel recovery valve 16, the fuel supply valve 14 is operated in a closed state, and the fuel supply through the pressure gauge 24 Since the pressure of the line can be confirmed and the fuel system of the engine is filled with the fuel of the auxiliary fuel tank 20, the corresponding fuel tank 20 consumes that much fuel.

공기의 방출이 완료되면 연료펌프(P)의 작동을 중지시키고, 혼기방지밸브(30)를 닫어 놓은후 엔진을 기동하여 정상작동을 시키면, 엔진(10)의 연료계통에 공급된 연료중 엔진 작동에 소요되고 남은 연료는 연료보충밸브(32)를 경유하여 보조연료탱크(20)로 유입된다.When the discharge of air is completed, stop the operation of the fuel pump (P), close the anti-air valve 30, start the engine to operate normally, the engine operation of the fuel supplied to the fuel system of the engine 10 The fuel remaining in the air flows into the auxiliary fuel tank 20 via the fuel fill valve 32.

이때, 보조연료탱크(20)의 연료가 적정수준이 되면 연료회수밸브(16)를 열고, 연료보충밸브(32)를 닫는 것으로 공기배출장치의 조작은 완료된다.At this time, when the fuel in the auxiliary fuel tank 20 reaches an appropriate level, the operation of the air discharge device is completed by opening the fuel recovery valve 16 and closing the fuel supplement valve 32.

여기에서 각종밸브는 볼밸브에 의한 수동조작이나 솔레노이드밸브나 공압 등의 다른 밸브에 의해서 조작되는 것도 가능하다.Here, the various valves may be operated by manual operation by a ball valve or by other valves such as solenoid valves or pneumatics.

또, 보조연료탱크(20)에 별도의 라인을 설치하여 연료를 공급할 수도 있으며, 보조연료탱크의 연료량을 뜨개나 전자센서 등을 이용하여 조절할 수도 있다.In addition, a separate line may be provided to the auxiliary fuel tank 20 to supply fuel, and the fuel amount of the auxiliary fuel tank may be adjusted using a knit or an electronic sensor.

또한, 보조연료탱크(20)와 연료탱크(12)를 공용으로 사용하는 것도 가능하다.In addition, it is also possible to use the auxiliary fuel tank 20 and the fuel tank 12 in common.

Claims (3)

연소실로 공급되는 연료를 저장하는 연료탱크와, 엔진정상작동시 상기 연료탱크의 연료를 엔진에 공급하는 연료공급밸브와, 연료펌프가 내장되어 있고 연료계통의 공기를 배출하는 공기방출공을 지닌 보조연료탱크와, 엔진정상 작동중에 상기 보조연료탱크로부터 공기가 연료계통으로 혼입되는 것을 방지하는 혼기방지밸브와, 엔진정성 작동중 상기 보조연료탱크에 연료를 보충하는 연료보충수단과, 엔진정상 작동중 연소실에 분사하고 남은 연료를 상기 연료탱크로 리턴시키는 연료회수밸브와, 상기 연료계통내의 압력을 일정압력 이하로 유지하는 감압밸브로 구성되는 것을 특징으로 하는 연료공급라인의 공기배출장치.A fuel tank for storing fuel supplied to the combustion chamber, a fuel supply valve for supplying fuel from the fuel tank to the engine during normal operation of the engine, and an air discharge hole having a fuel pump built-in and discharging air from the fuel system A fuel tank, an anti-air valve for preventing air from entering the fuel system from the auxiliary fuel tank during normal operation of the engine, fuel supplement means for replenishing the auxiliary fuel tank with fuel during engine clean operation, and engine normal operation. And a pressure recovery valve for returning fuel remaining in the combustion chamber to the fuel tank, and a pressure reducing valve for maintaining a pressure within the fuel system below a predetermined pressure. 제1항에 있어서, 상기 연료계통내의 압력을 지시하는 압력게이지를 포함하는 연료공급라인의 공기배출장치.The air discharge device of the fuel supply line of claim 1, further comprising a pressure gauge indicating a pressure in the fuel system. 제1항에 있어서, 상기 연료보충수단은 보조연료탱크내에 설치되는 뜨개와 니들밸브로 구성된 연료공급라인의 공기배출장치.The air discharge device of the fuel supply line of claim 1, wherein the fuel replenishing means comprises a needle and a needle valve installed in the auxiliary fuel tank.
KR1019940019646A 1994-08-10 1994-08-10 Air vent system of fuel line KR0174438B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030031632A (en) * 2001-10-15 2003-04-23 기아자동차주식회사 Fuel-Supply-Line Control System for Diesel Engine
WO2018131823A1 (en) 2017-01-11 2018-07-19 주식회사 코펙 Enamel-coating device and method for fin tube
KR20210025304A (en) 2019-08-27 2021-03-09 조경애 Driver
KR20210025306A (en) 2019-08-27 2021-03-09 조경애 Driver
KR20210025305A (en) 2019-08-27 2021-03-09 조경애 Driver

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030031632A (en) * 2001-10-15 2003-04-23 기아자동차주식회사 Fuel-Supply-Line Control System for Diesel Engine
WO2018131823A1 (en) 2017-01-11 2018-07-19 주식회사 코펙 Enamel-coating device and method for fin tube
KR20210025304A (en) 2019-08-27 2021-03-09 조경애 Driver
KR20210025306A (en) 2019-08-27 2021-03-09 조경애 Driver
KR20210025305A (en) 2019-08-27 2021-03-09 조경애 Driver

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