KR20020076527A - gas fuel supply device of having exterior pump - Google Patents

gas fuel supply device of having exterior pump Download PDF

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Publication number
KR20020076527A
KR20020076527A KR1020010016439A KR20010016439A KR20020076527A KR 20020076527 A KR20020076527 A KR 20020076527A KR 1020010016439 A KR1020010016439 A KR 1020010016439A KR 20010016439 A KR20010016439 A KR 20010016439A KR 20020076527 A KR20020076527 A KR 20020076527A
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KR
South Korea
Prior art keywords
fuel
pump
fuel tank
tank
injector
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KR1020010016439A
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Korean (ko)
Inventor
이병호
임재규
김경남
신용남
손진우
이상준
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(주)모토닉
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Priority to KR1020010016439A priority Critical patent/KR20020076527A/en
Publication of KR20020076527A publication Critical patent/KR20020076527A/en

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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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE: An external decoration pump type gas fuel supplying apparatus is provided to smoothly maintain the fuel pump operation even in case that a vehicle inclines to one side or the remaining amount of a fuel pump is little. CONSTITUTION: An external decoration pump type gas fuel supplying apparatus is composed of a fuel tank(1), a fuel pump(2) installed at the out side in separation with the fuel tank to pump the fuel from the fuel tank, an injector(4) for injecting the liquid fuel supplied from the fuel pump through a fuel line(3) to the intake pipe of an engine in accordance with the driving condition, and a pressure regulator(5) installed between the injector and fuel tank. The pressure regulator is open in that case that the pressure is more than the predetermined value in the fuel line, drains to the fuel tank, and keeps the pressure of the fuel line and injector in a predetermined valve.

Description

펌프 외장형 가스연료 공급장치{gas fuel supply device of having exterior pump}Gas fuel supply device of having exterior pump

본 발명은 액체상태의 가스연료를 인젝터로 분사하는 방식의 가스연료 차량에서 연료펌프를 연료탱크 외부에 장착하여 사용할 수 있도록 한 펌프 외장형 가스연료 공급장치에 관한 것이다.The present invention relates to a pump external type gas fuel supply apparatus which enables the fuel pump to be mounted outside the fuel tank in a gas fuel vehicle in which a liquid gas fuel is injected into an injector.

더욱 상세하게는, 가스연료 차량의 액상 연료 공급장치에서 연료탱크의 잔유량이 적을 때, 차량이 기울어지는 경우에도 연료탱크로 부터 연료가 연료탱크 외부에 설치된 연료펌프에 원활하게 유입되어 연료펌프의 작동을 유지할 수 있도록 한 펌프 외장형 가스연료 공급장치에 관한 것이다.More specifically, when the remaining amount of the fuel tank is low in the liquid fuel supply device of the gas fuel vehicle, even when the vehicle is inclined, the fuel flows smoothly into the fuel pump installed outside the fuel tank to operate the fuel pump. It relates to a pump external gas fuel supply device capable of maintaining.

일반적으로, 액체상태의 가스연료를 인젝터로 분사하는 방식의 가스 차량에서, 가스연료를 액상 상태로 엔진으로 공급하고 엔진에 공급된 가스연료는 인젝터를 통하여 엔진의 흡기관으로 공급된다. 이때 가스연료를 액상으로 유지하며, 인젝터의 분사압을 형성하기 위하여 가스연료를 송출하는 연료펌프의 기밀유지가 용이하여 연료탱크 내부에 연료펌프를 설치하여 사용하고 있다.In general, in a gas vehicle in which a liquid gas fuel is injected into an injector, the gas fuel is supplied to the engine in a liquid state and the gas fuel supplied to the engine is supplied to the intake pipe of the engine through the injector. At this time, to maintain the gas fuel in the liquid phase, and to maintain the airtightness of the fuel pump for sending gas fuel to form the injection pressure of the injector, it is used to install the fuel pump inside the fuel tank.

그러나, 연료펌프를 연료탱크 내부에 설치하여 사용하는 경우, 연료펌프를 수리 및 교체하기 위해서는 연료탱크에 이미 충전되어 있는 가스연료를 모두 제거한 후 보수작업을 하게되므로, 가스연료를 연료탱크로 부터 제거하기 위한 특별한 부대설비 및 장소가 요구되어 작업성 및 가스 폭발의 안전성이 떨어지는 문제점을 갖게 된다.However, when the fuel pump is installed inside the fuel tank, in order to repair and replace the fuel pump, the gas pump is removed from the fuel tank since all the gas fuel already charged in the fuel tank has been removed and repaired. Special auxiliary facilities and locations are required for this purpose, resulting in a problem of poor workability and safety of gas explosion.

또한, 연료탱크 내부에 가스연료의 잔유량이 적을 때, 차량이 기울어지거나연료가 출렁일 때에는 연료탱크의 가스연료를 연료펌프에 의해 엔진에 원활하게 공급할 수 없게되는 문제점을 갖게 된다.In addition, when the residual amount of gas fuel in the fuel tank is small, when the vehicle is inclined or the fuel is slumped, there is a problem that the gas fuel of the fuel tank cannot be smoothly supplied to the engine by the fuel pump.

따라서, 본 발명의 목적은, 연료펌프를 연료탱크 외부에 설치하고 연료펌프의 흡입부에 연료탱크로 부터 연료를 원활하게 흡입하도록 버퍼를 설치하여, 연료탱크에 잔유량이 적거나 차량이 기울어지는 경우에도 연료펌프의 작동을 원활하게 유지할 수 있도록 한 펌프 외장형 가스연료 공급장치를 제공하는 것이다.Accordingly, an object of the present invention is to install a fuel pump outside the fuel tank and to install a buffer so as to smoothly suck the fuel from the fuel tank to the suction portion of the fuel pump, so that the amount of remaining oil in the fuel tank or the vehicle is inclined. Edo provides a pump external gas fuel supply device that can keep the fuel pump running smoothly.

본 발명의 다른 목적은, 연료펌프의 수리 및 교체시 조립성 및 안전성이 향상되도록 한 펌프 외장형 가스연료 공급장치를 제공하는 것이다.It is another object of the present invention to provide a pump external gas fuel supply device for improving assembly and safety when repairing and replacing a fuel pump.

본 발명의 또 다른 목적은, 혼합기 및 베이퍼라이저 방식을 사용하는 차량의 기존 연료탱크에 용이하게 적용하여 범용적으로 활용할 수 있도록 한 펌프 외장형 가스연료 공급장치를 제공하는 것이다.It is still another object of the present invention to provide a pump external gas fuel supply device that can be easily applied to an existing fuel tank of a vehicle using a mixer and a vaporizer method and used universally.

도 1은 본 발명에 의한 펌프 외장형 가스연료 공급장치의 개략도,1 is a schematic view of a pump external gas fuel supply apparatus according to the present invention,

도 2는 본 발명에 의한 펌프 외장형 가스연료 공급장치에서 연료탱크와 분리되는 연료펌프의 요부발췌도 이다.Figure 2 is an excerpt of the main portion of the fuel pump separated from the fuel tank in the pump external gas fuel supply apparatus according to the present invention.

*도면중 주요 부분에 사용된 부호의 설명** Explanation of symbols used in the main part of the drawing *

1; 연료탱크One; Fuel tank

2; 연료펌프2; Fuel pump

3; 연료라인3; Fuel line

4; 인젝터4; Injector

5; 압력레귤레이터5; Pressure regulator

6; 모터6; motor

7; 통로7; Passage

8; 버퍼(buffer)8; Buffer

9; 다이어프램9; Diaphragm

10; 체크밸브10; Check valve

전술한 본 발명의 목적은, 가스연료를 저장하는 연료탱크와, 연료탱크와 분리되어 외부에 설치되며 연료탱크로 부터 유입되는 연료를 송출하는 연료펌프와, 연료펌프로 부터 연료라인을 따라 공급되는 액상의 연료를 운전조건에 따라 엔진 흡기관에 분사하는 인젝터와, 인젝터와 연료탱크 사이에 설치되며 연료라인에 설정값 이상의 압력 발생시 개방되어 연료탱크로 드레인시켜 연료라인 및 인젝터의 압력을 설정된 값으로 유지하는 압력레귤레이터를 구비하는 것을 특징으로 하는 펌프 외장형 가스연료 공급장치를 제공함에 의해 달성된다.The object of the present invention described above is a fuel tank for storing gas fuel, a fuel pump which is installed outside and separated from the fuel tank and sends fuel flowing from the fuel tank, and is supplied along the fuel line from the fuel pump. It is installed between the injector that injects liquid fuel into the engine intake pipe according to the operating conditions, and is installed between the injector and the fuel tank, and it opens when the pressure in the fuel line exceeds the set value and drains it to the fuel tank to set the pressure of the fuel line and injector to the set value. It is achieved by providing a pump external gas fuel supply, characterized in that it comprises a pressure regulator to maintain.

바람직한 실시예에 의하면, 전술한 연료펌프는 연료탱크로 부터 연료펌프에 유입되는 연료가 단절되지않도록 연료탱크 바닥면에 연통되는 통로가 형성된 버퍼에 설치되며, 전술한 연료펌프를 구동시키는 모터는 버퍼 외부에 설치된다.According to a preferred embodiment, the above-described fuel pump is installed in a buffer in which a passage communicating with the bottom of the fuel tank is formed so that the fuel flowing into the fuel pump from the fuel tank is not disconnected, the motor for driving the fuel pump is a buffer Installed outside

바람직한 실시예에 의하면, 전술한 연료탱크에 잔유량이 적은 경우 연료탱크의 기울어짐 및 연료의 출렁거림을 방지하여 연료펌프의 작동을 유지할 수 있도록 통로에 다이어프램을 갖는 체크밸브가 설치된다.According to a preferred embodiment, a check valve having a diaphragm is installed in the passage so as to prevent the fuel tank from tilting and the fuel rumble in order to maintain the operation of the fuel pump when the amount of residual oil in the fuel tank is small.

바람직한 실시예에 의하면, 전술한 통로는 중력에 의해 연료탱크로 부터 통로에 유입되는 연료량이 적어도 연료펌프의 최대 토출량보다 1배 내지 30배까지 유입되도록 형성된다.According to a preferred embodiment, the passage is formed such that the amount of fuel introduced into the passage from the fuel tank by gravity flows at least 1 to 30 times the maximum discharge amount of the fuel pump.

이하, 본 발명의 바람직한 실시예를 첨부도면을 따라 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는 것이다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art to which the present invention pertains, and thus the present invention It does not mean that the technical spirit and scope of the company is limited.

도 1 및 도 2에 도시된 바와 같이, 포화상태의 액,기상 가스연료를 저장하는 연료탱크(1), 연료탱크(1)와 분리되어 외부에 설치되며 연료탱크(1)로 부터 유입되는 연료를 송출하는 연료펌프(2), 연료펌프(2)로 부터 연료라인(3)을 따라 공급되는 액상의 연료를 운전조건에 따라 엔진 흡기관에 분사하는 인젝터(4)(injector), 인젝터(4)와 연료탱크(1) 사이에 설치되며 연료라인(3)에 설정값 이상의 압력 발생시 개방되어 연료탱크(1)로 드레인(drain)시켜 연료라인(3) 및 인젝터(4)의 압력을 설정된 값으로 유지하는 압력레귤레이터(5)(pressure regulator), 전술한연료펌프(2)를 구동시키는 모터(6)가 외부에 설치되며 연료탱크(1)로 부터 연료펌프(2)에 유입되는 연료가 단절되지않도록 연료탱크(1) 바닥면에 연통되는 통로(7)가 형성되는 버퍼(8)를 구비한다.1 and 2, the fuel tank (1) for storing the liquid and gaseous gas fuel in a saturated state, the fuel is separated from the fuel tank (1) is installed outside and the fuel flowing from the fuel tank (1) Fuel injector (4), injector (4) which injects liquid fuel supplied from fuel pump (2) along fuel line (3) to engine intake pipe according to the operating conditions, and injector (4). ) Is installed between the fuel tank (1) and the fuel line (3) is opened when the pressure generated in the fuel line (3) above the set value is drained to the fuel tank (1) to set the pressure of the fuel line (3) and injector (4) A pressure regulator (5) to maintain the pressure, the motor (6) for driving the fuel pump (2) described above is installed outside, and the fuel flowing into the fuel pump (2) from the fuel tank (1) is disconnected. The buffer 8 is provided with a passage 7 in communication with the bottom surface of the fuel tank 1.

이때, 전술한 연료탱크(1)에 잔유량이 적은 경우 연료탱크(1)의 기울어짐 및 연료의 출렁거림을 방지하여 연료펌프(2)의 원활한 작동을 유지할 수 있도록 전술한 통로(7)에 연료의 이동에 따른 압력이 손실되는 것을 최소화하도록 다이어프램(9)(diaphragm)을 갖는 체크밸브(10)가 설치된다.At this time, when the amount of residual oil in the fuel tank 1 is small, fuel in the aforementioned passage 7 may be maintained so that the fuel tank 2 may be prevented from tilting and fuel slack to maintain smooth operation of the fuel pump 2. A check valve 10 having a diaphragm 9 is installed to minimize the loss of pressure due to the movement of the.

전술한 통로(7)는 연료펌프(2)의 토출유량에 압력강하가 발생되지않도록 중력에 의해 연료탱크(1)로 부터 통로(7)에 유입되는 연료량이 적어도 연료펌프(2)의 최대 토출량보다 1배 내지 30배까지 유입되도록 형성된다.The passage 7 described above has at least the maximum discharge amount of the fuel pump 2 such that the amount of fuel introduced into the passage 7 from the fuel tank 1 by gravity does not cause a pressure drop in the discharge flow rate of the fuel pump 2. It is formed to flow up to 1 to 30 times.

미 설명부호 11은 버퍼(8)상단과 연료탱크(1)상단을 연통시켜 버퍼(8)상측의 기상의 연료에 의해 연료탱크(1)로 부터 액상 연료의 유입이 차단되는 것을 방지하는 벤트(vent), 12는 엔진이다.Reference numeral 11 denotes a vent that communicates the upper end of the buffer 8 with the upper end of the fuel tank 1 to prevent the inflow of liquid fuel from the fuel tank 1 by the gaseous fuel above the buffer 8. vent), 12 is the engine.

이하에서, 본 발명에 의한 펌프 외장형 가스연료 공급장치의 사용방법을 첨부도면을 참조하여 상세하게 설명하면 아래와 같다.Hereinafter, the method of using the pump external gas fuel supply apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

도 1 및 도 2에 도시된 바와 같이, 전술한 연료탱크(1)로 부터 통로(7)를 통하여 버퍼(8)에 유입되는 연료는 버퍼(8)에 설치된 연료펌프(2)에 의해 연료라인(3)을 따라 엔진(12)측의 인젝터(4)에 공급되며, 인젝터(4)에 공급된 액상의 연료는 미도시된 전자제어장치(ECU)에 의해 결정되는 운전조건에 따른 정확한 분사량을 엔진의 흡기다기관에 분사함에 따라 정확한 공연비 및 운전조건별로 제어할 수 있게되며, 인젝터(4)에서 분사된 후 남은 연료는 압력레귤레이터(5)를 통하여 연료탱크(1)로 귀환된다.As shown in FIG. 1 and FIG. 2, the fuel flowing into the buffer 8 from the above-described fuel tank 1 through the passage 7 is connected to the fuel line by the fuel pump 2 installed in the buffer 8. (3) is supplied to the injector 4 of the engine 12 side, the liquid fuel supplied to the injector 4 is a precise injection amount according to the operating conditions determined by the electronic control unit (ECU) not shown As it is injected into the intake manifold of the engine, it is possible to control by accurate air-fuel ratio and operating conditions, and the fuel remaining after being injected from the injector 4 is returned to the fuel tank 1 through the pressure regulator 5.

이때, 전술한 연료펌프(2)로 부터 토출되는 연료는 인젝터(4)와 연료탱크(1)사이에 설치된 전술한 압력레귤레이터(5)에 의해 연료라인(3) 및 인젝터(4)에서 일정한 압력을 유지할 수 있는 것이다. 즉 전술한 연료펌프(2)로 부터 인젝터(4)에 공급되는 연료의 압력이 설정된 압력값 이상인 경우 압력레귤레이터(5)가 개방되어 연료탱크(1)로 드레인시키는 것이다.At this time, the fuel discharged from the above-described fuel pump 2 is a constant pressure in the fuel line (3) and the injector (4) by the pressure regulator (5) installed between the injector (4) and the fuel tank (1) It can be maintained. That is, when the pressure of the fuel supplied from the fuel pump 2 to the injector 4 is equal to or greater than the set pressure value, the pressure regulator 5 is opened and drained to the fuel tank 1.

한편, 전술한 연료탱크(1)에 잔유량이 적은 경우, 차량이 기울어지거나 연료가 출렁이는 경우에도 연료탱크(1)로 부터 연료가 버퍼(8)에 원활하게 유입되므로 연료펌프(2)는 작동을 계속할 수 있게 된다. 즉 전술한 연료탱크(1)와 버퍼(8)사이에 연통되도록 설치된 통로(7)에 설치된 다이어프램(9)이 구비된 체크밸브(10)에 의해 연료를 버퍼(8)측으로 공급할 수 있는 것이다.On the other hand, when the amount of residual oil in the fuel tank 1 described above is small, even when the vehicle is inclined or the fuel is slumped, since the fuel smoothly flows from the fuel tank 1 into the buffer 8, the fuel pump 2 is The operation can continue. That is, fuel can be supplied to the buffer 8 side by the check valve 10 provided with the diaphragm 9 provided in the passage 7 installed so as to communicate between the fuel tank 1 and the buffer 8 mentioned above.

한편, 중력에 의해 연료탱크(1)내의 연료가 연료탱크(1) 바닥면에 연통된 통로(7)를 통하여 연료펌프(2)의 토출량보다 적어도 1배 내지 30배의 연료량이 버퍼(8)로 유입되도록 형성됨에 따라, 연료펌프(2)에 의해 토출되는 연료의 압력이 떨어지는 것을 방지할 수 있게 된다.On the other hand, at least 1 to 30 times the amount of fuel discharged from the fuel pump 2 through the passage 7 through which fuel in the fuel tank 1 communicates with the bottom surface of the fuel tank 1 by gravity, the buffer 8 As it is formed to flow into, it is possible to prevent the pressure of the fuel discharged by the fuel pump (2) to drop.

또한, 전술한 연료탱크(1)의 연료를 압축시켜 액상으로 인젝터(4)에 공급하는 연료펌프(2)를 연료탱크(1)와 분리하여 외부에 설치함에 따라, 연료펌프(2)의 수리 및 교체시 연료탱크(1)외부에서 수리작업을 하게 되므로 작업성 및 안전성이 향상되는 것이다.In addition, the fuel pump 2 is repaired by separating the fuel pump 2, which compresses the fuel of the fuel tank 1 and supplies the injector 4 in the liquid phase, to the fuel tank 1. And when the replacement of the repair work outside the fuel tank (1) is to improve the workability and safety.

이상에서와 같이, 바람직한 실시예에 의하면 아래와 같은 이점을 갖는다.As mentioned above, according to a preferable embodiment, it has the following advantages.

연료펌프를 연료탱크 외부에 설치하고 연료펌프의 흡입부에 연료탱크로 부터 연료를 원활하게 흡입하도록 버퍼를 설치하여, 연료탱크에 잔유량이 적거나 차량이 기울어지는 경우에도 연료펌프의 작동을 원활하게 유지할 수 있다.A fuel pump is installed outside the fuel tank and a buffer is installed at the inlet of the fuel pump to smoothly suck the fuel from the fuel tank, so that the fuel pump can be operated smoothly even when the fuel tank is low in amount or the vehicle is tilted. I can keep it.

또한, 연료펌프의 수리 및 교체시 조립성 및 안전성을 향상시킬 수 있다.In addition, it is possible to improve the assembly and safety when repairing and replacing the fuel pump.

또한, 혼합기 및 베이퍼라이저 방식을 사용하는 차량의 기존 연료탱크에 용이하게 적용하여 범용적으로 활용할 수 있다.In addition, it can be easily applied to the existing fuel tank of the vehicle using the mixer and the vaporizer method can be used universally.

Claims (4)

가스연료를 저장하는 연료탱크;A fuel tank for storing gas fuel; 상기 연료탱크와 분리되어 외부에 설치되며 상기 연료탱크로 부터 유입되는 연료를 송출하는 연료펌프;A fuel pump which is separated from the fuel tank and installed outside and which sends fuel introduced from the fuel tank; 상기 연료펌프로 부터 연료라인을 따라 공급되는 액상의 연료를 운전조건에 따라 엔진 흡기관에 분사하는 인젝터; 및An injector for injecting liquid fuel supplied from the fuel pump along a fuel line to an engine intake pipe according to an operating condition; And 상기 인젝터와 상기 연료탱크 사이에 설치되며 상기 연료라인에 설정값 이상의 압력 발생시 개방되어 상기 연료탱크로 드레인시켜 상기 연료라인 및 인젝터의 압력을 설정된 값으로 유지하는 압력레귤레이터를 구비하는 것을 특징으로 하는 펌프 외장형 가스연료 공급장치.And a pressure regulator installed between the injector and the fuel tank and open when the pressure occurs in the fuel line to a predetermined value or more to drain to the fuel tank to maintain the pressure of the fuel line and the injector at a set value. External gas fuel supply. 청구항 1에 있어서, 상기 연료펌프는, 상기 연료탱크로 부터 상기 연료펌프에 유입되는 연료가 단절되지않도록 상기 연료탱크 바닥면에 연통되는 통로가 형성된 버퍼에 설치되며, 상기 연료펌프를 구동시키는 모터는 상기 버퍼 외부에 설치되는 것을 특징으로 하는 펌프 외장형 가스연료 공급장치.The fuel pump of claim 1, wherein the fuel pump is installed in a buffer having a passage communicating with a bottom surface of the fuel tank so that fuel flowing into the fuel pump from the fuel tank is not disconnected. Pump external gas fuel supply device, characterized in that installed outside the buffer. 청구항 2에 있어서, 상기 연료탱크에 잔유량이 적은 경우 상기 연료탱크의 기울어짐 및 연료의 출렁거림을 방지하여 상기 연료펌프의 작동을 유지할 수 있도록 상기 통로에 다이어프램을 갖는 체크밸브가 설치되는 것을 특징으로 하는 펌프외장형 가스연료 공급장치.The check valve having a diaphragm is installed in the passage so as to maintain the operation of the fuel pump by preventing inclination of the fuel tank and slumping of the fuel when the amount of remaining oil in the fuel tank is small. Pump external gas fuel supply system. 청구항 2 또는 청구항 3에 있어서, 상기 통로는 중력에 의해 상기 연료탱크로 부터 상기 통로에 유입되는 연료량이 적어도 상기 연료펌프의 최대 토출량보다 1배 내지 30배까지 유입되도록 형성된 것을 특징으로 하는 펌프 외장형 가스연료 공급장치.The gas according to claim 2 or 3, wherein the passage is formed such that the amount of fuel introduced into the passage from the fuel tank by gravity flows at least 1 to 30 times the maximum discharge amount of the fuel pump. Fuel supply.
KR1020010016439A 2001-03-29 2001-03-29 gas fuel supply device of having exterior pump KR20020076527A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100598826B1 (en) * 2006-01-16 2006-07-11 한국기계연구원 Induce type external pump for lpg
KR100725701B1 (en) * 2006-04-13 2007-06-07 지멘스 오토모티브 주식회사 Method and apparatus for changing fuel pump in lpg fuel tank for lpi vehicle
KR100728915B1 (en) * 2006-06-21 2007-06-14 한국기계연구원 Gas feeding apparatus of gas fuel vehicles
KR101068969B1 (en) * 2008-10-09 2011-09-29 주식회사 캐놀 Outside liquefied petroleum injection fuel pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775160U (en) * 1980-10-27 1982-05-10
JPH03153419A (en) * 1989-11-09 1991-07-01 Mitsuba Electric Mfg Co Ltd Fuel tank device
WO1993002601A1 (en) * 1991-07-29 1993-02-18 Jacques Frissard Device having a wide vertical opening for remotely transferring mail to a receiving box
JPH05118254A (en) * 1991-09-27 1993-05-14 Matsuda Sangyo Kk Fuel supply device for lpg engine
JPH0874693A (en) * 1994-09-06 1996-03-19 Meidensha Corp Fuel supply system of engine
KR20000073658A (en) * 1999-05-13 2000-12-05 김영훈 liquid fuel feeding apparatus for LPG vehicles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775160U (en) * 1980-10-27 1982-05-10
JPH03153419A (en) * 1989-11-09 1991-07-01 Mitsuba Electric Mfg Co Ltd Fuel tank device
WO1993002601A1 (en) * 1991-07-29 1993-02-18 Jacques Frissard Device having a wide vertical opening for remotely transferring mail to a receiving box
JPH05118254A (en) * 1991-09-27 1993-05-14 Matsuda Sangyo Kk Fuel supply device for lpg engine
JPH0874693A (en) * 1994-09-06 1996-03-19 Meidensha Corp Fuel supply system of engine
KR20000073658A (en) * 1999-05-13 2000-12-05 김영훈 liquid fuel feeding apparatus for LPG vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100598826B1 (en) * 2006-01-16 2006-07-11 한국기계연구원 Induce type external pump for lpg
KR100725701B1 (en) * 2006-04-13 2007-06-07 지멘스 오토모티브 주식회사 Method and apparatus for changing fuel pump in lpg fuel tank for lpi vehicle
KR100728915B1 (en) * 2006-06-21 2007-06-14 한국기계연구원 Gas feeding apparatus of gas fuel vehicles
KR101068969B1 (en) * 2008-10-09 2011-09-29 주식회사 캐놀 Outside liquefied petroleum injection fuel pump

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