KR960003241B1 - Fuel feeding controller - Google Patents

Fuel feeding controller Download PDF

Info

Publication number
KR960003241B1
KR960003241B1 KR1019940008322A KR19940008322A KR960003241B1 KR 960003241 B1 KR960003241 B1 KR 960003241B1 KR 1019940008322 A KR1019940008322 A KR 1019940008322A KR 19940008322 A KR19940008322 A KR 19940008322A KR 960003241 B1 KR960003241 B1 KR 960003241B1
Authority
KR
South Korea
Prior art keywords
fuel
high pressure
pressure
natural gas
compressed natural
Prior art date
Application number
KR1019940008322A
Other languages
Korean (ko)
Other versions
KR950029563A (en
Inventor
찬 정
Original Assignee
대우자동차 주식회사
김태구
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대우자동차 주식회사, 김태구 filed Critical 대우자동차 주식회사
Priority to KR1019940008322A priority Critical patent/KR960003241B1/en
Publication of KR950029563A publication Critical patent/KR950029563A/en
Application granted granted Critical
Publication of KR960003241B1 publication Critical patent/KR960003241B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
    • 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
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • 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
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0293—Safety devices; Fail-safe measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The fuel stopping device for shutting off the fuel supply on emergency by operating the switch on the deck panel, prevents the gas-leakage accident in the compressed natural gas(CNG) vehicle. The device has the high-pressure cylinder(10) containing high-pressure CNG, pressure regulator(12) for regulating the high-pressure of the CNG and a plurality of fuel injectors(16) for injecting the pressure-regulated gas to the combustion chamber of the engine body(18). The device comprises the control switch(24) for controlling the opening/closing of the fuel lines(26, 30); devices(28, 32) for opening or closing the fuel lines(26)(30) connected with the cylinder(10) or pressure regulator(12)/fuel distribution tube(14).

Description

CNG 차량의 연료차단장치Fuel cutoff device of CNG vehicle

제1도는 일반적인 다중연료분사방식 CNG 차량의 연료공급계통을 개략적으로 설명하는 도면.1 is a diagram schematically illustrating a fuel supply system of a general multi-fuel injection type CNG vehicle.

제2도는 본 발명에 따른 연료차단장치가 채용된 CNG 차량의 연료공급계통을 설명하는 도면이다.2 is a view illustrating a fuel supply system of a CNG vehicle employing a fuel cutoff device according to the present invention.

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

10 : 고압용기 12 : 감압기10: high pressure container 12: pressure reducer

14 : 연료분배관 16 : 연료분사기14 fuel distribution pipe 16 fuel injection machine

18 : 엔진 본체 20 : 배터리18: engine body 20: battery

22 : 점화스위치 24 : 제어스위치22: ignition switch 24: control switch

26,30 : 연료라인 28,32 : 연료라인차단장치26,30: Fuel Line 28,32: Fuel Line Block

본 발명은 CNG 차량의 연료차단장치에 관한 것으로, 보다 상세하게는 비상시 운전석 전망 패널에 설치된 스위치의 조작에 따라 연료공급계통의 고압측과 저압측을 차단함으로써 가스누출등에 의한 위험을 방지 하도록 한 CNG 차량의 연료차단장치에 관한 것이다.The present invention relates to a fuel cutoff device of a CNG vehicle, and more particularly, to cut off the high pressure side and the low pressure side of the fuel supply system according to an operation of a switch installed in a driver's seat viewing panel in an emergency, thereby preventing the risk of gas leakage. A fuel cutoff device of a vehicle.

현재, 내연기관에서 주로 사용되는 가솔린연료와 같은 화석연료의 불완전 연소시에 발생되는 유해가스에 의한 환경공해에 대한 규제가 강화되는 추세에 따라 청청연료로 알려진 압축천연가스(Compressed Natural Gas ; CNG)를 연료로 사용하기 위한 연구가 이루어지고 있다.Currently, Compressed Natural Gas (CNG), also known as blue and blue fuel, has been tightened due to the increasing regulations on environmental pollution caused by incomplete combustion of fossil fuels such as gasoline fuel mainly used in internal combustion engines. Has been researched to use fuel as a fuel.

그러나 압축천연가스를 주연료로 사용하는 차량에서의 연료공급계통에 따르면, 제1도에 도시된 바와 같이 압축천연가스가 고압으로 수용된 고압용기(10)에는 그 고압의 압축천연가스를 일정한 압력으로 감압하는 감압기(12)가 연결되고, 그 감압기(12)에는 연료분배관(14)을 통해 공급되는 감압된 압축천연가스를 엔진본체(18)내의 연소실로 분사하여 연소되도록 하는 다수의 연료분사기(Injector ; 16)가 연결된다.However, according to the fuel supply system in a vehicle using compressed natural gas as the main fuel, as shown in FIG. 1, the high pressure vessel 10 in which the compressed natural gas is received at a high pressure has the compressed natural gas at a high pressure. A decompressor 12 for reducing pressure is connected, and the decompressor 12 injects a plurality of fuels to be combusted by injecting the decompressed compressed natural gas supplied through the fuel distribution pipe 14 into the combustion chamber in the engine body 18. Injector 16 is connected.

이와 같은 일반적인 다중연료분사방식 CNG 차량의 연료공급계통에 따르면, 고압용기(10)내에 고압으로 저장된 압축천연가스가 감압기(12)에서 적정한 압력으로 감압되고, 그 감압된 압축천연가스는 연료분배관(14)을 통해 다수의 연료분사기(Injector ; 16)에 공급되어 도시되지 않은 전자제어장치(ECM 장치)의 제어하에 엔진 본체(18)의 연소실내로 유입되어 연소된다.According to the fuel supply system of the general multi-fuel injection type CNG vehicle, the compressed natural gas stored at a high pressure in the high pressure vessel 10 is decompressed to an appropriate pressure in the decompressor 12, and the decompressed compressed natural gas is a fuel powder. The pipe 14 is supplied to a plurality of fuel injectors 16 and flows into the combustion chamber of the engine main body 18 under the control of an electronic control unit (ECM device), which is not shown.

그런데, 제1도에 도시된 CNG 차량의 연료공급계통에서는 예컨대 충돌 또는 추돌사고의 발생시 연료라인에 대한 손상이 초래되는 경우에 압축천연가스의 차단이 불가능하여 연료의 누출가능성이 높기 때문에 차량의 화재 및 폭발 위험성이 우려되는 실정이다.However, in the fuel supply system of the CNG vehicle shown in FIG. 1, the fire of the vehicle is not possible because the compressed natural gas cannot be blocked in the event of damage to the fuel line, for example, when a collision or collision occurs. And the risk of explosion.

따라서, 본 발명은 상기한 사정을 감안하여 이루어진 것으로, 비상시 스위치의 조작에 따라 고압용기측 및 연료분배관측의 연료공급라인을 차단시켜 가스의 누출을 방지함으로써 화재 및 폭발의 위험성을 저감시키도록 된 CNG 차량의 연료차단장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above circumstances, and in order to reduce the risk of fire and explosion by preventing the leakage of gas by blocking the fuel supply line on the high pressure vessel side and the fuel distribution pipe side according to the operation of the switch in an emergency. The purpose is to provide a fuel shutoff device for a CNG vehicle.

상기한 목적을 달성하기 위해, 본 발명에 따르면 고압의 압축천연가스가 수용된 고압용기와, 이 고압용기로부터 공급되는 고압의 압축천연가스를 일정한 압력으로 감압하는 감압기, 이 감압기에 의해 감압된 압축 천연가스를 연료분배관을 통해 공급받아 엔진 본체의 연소실로 분사하여 연소되도록 하는 다수의 연료분사기를 갖추어 구성된 CNG 차량의 연료공급계통에 있어서, 차량 내부의 운전석 전방 패널상에 설치되어 상기 연료공급계통의 연료라인을 개폐제어하기 위한 제어스위치와, 이 제어스위치에 의해 전기적으로 제어되어 상기 고압용기측의 연료라인과 상기 감압기 또는 연료분배관측의 연료라인을 개폐하는 연료라인개폐장치를 갖추어 구성된 CNG 차량의 연료차단장치가 제공된다.In order to achieve the above object, according to the present invention, a high pressure vessel containing a high pressure compressed natural gas, a pressure reducer for reducing the high pressure compressed natural gas supplied from the high pressure vessel to a constant pressure, the pressure reduced by this pressure reducer A fuel supply system of a CNG vehicle having a plurality of fuel injectors for supplying natural gas through a fuel distribution pipe to be injected into a combustion chamber of an engine body for combustion, wherein the fuel supply system is installed on a front panel of a driver's seat inside the vehicle. CNG comprising a control switch for opening and closing the fuel line of the fuel cell and a fuel line opening and closing device electrically controlled by the control switch to open and close the fuel line on the high pressure vessel side and the fuel line on the pressure reducer or fuel distribution pipe side. A fuel cutoff device of a vehicle is provided.

바람직하게, 상기 연료라인개폐장치는 상기 제어스위치에 의해 전기적으로 제어되는 솔레노이드를, 포함하는 전자(電磁)밸브로 구성된다.Preferably, the fuel line opening and closing device is composed of an electromagnetic valve including a solenoid electrically controlled by the control switch.

이와 같이 구성된 본 발명에 따른 CNG 차량의 연료차단장치는 비상시 제어스위치를 조작하게 되면 그 제어스위치에 의해 전기적으로 제어되는 연료라인개폐장치인 솔레노이드를 포함하는 전자밸브가 연료라인을 차단하게 되어 가스의 누출에 의한 화재 및 폭발의 위험성이 현저하게 저감 또는 방지될 수 있다.When the fuel cutoff device of the CNG vehicle according to the present invention configured as described above operates a control switch in an emergency, the solenoid valve including a solenoid, which is a fuel line switching device electrically controlled by the control switch, shuts off the fuel line. The risk of fire and explosion due to leakage can be significantly reduced or prevented.

이하, 본 발명에 대해 첨부도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

제2도는 본 발명에 따른 연료차단장치가 채용된 CNG 차량의 연료공급계통을 설명하는 도면으로, 그 CNG 차량의 연료곱급계통에 따르면 압축천연가스가 고압으로 수용된 고압용기(10)에는 그 고압용기(10)로부터 공급되는 고압의 압축천연가스를 일정한 압력으로 감압하는 감압기(12)가 연결되고, 그 감압기(12)에는 연료분배관(14)을 통해 공급되는 감압된 압축천연가스를 엔진 본체(18)내의 연소실로 분사하여 연소되도록 하는 다수의 연료분사기(16)가 연결되며, 차량의 전원을 제공하는 배터리(20)에는 점화스위치(22)가 연결됨과 더불어 비상시 연료라인을 차단하기 위한 제어스위치(24)가 접속되는데, 그 제어스위치(24)는 바람직하게 비상시 운전자에 의해 용이하게 조작될 수 있도록 운전자 전방 패널상에 설치된다.2 is a view illustrating a fuel supply system of a CNG vehicle employing a fuel cutoff device according to the present invention. According to the fuel supply system of the CNG vehicle, the high pressure vessel in which the compressed natural gas is received at a high pressure is included in the high pressure vessel. A pressure reducer 12 for reducing the high pressure compressed natural gas supplied from 10 to a constant pressure is connected, and the pressure reducer 12 supplies the reduced pressure compressed natural gas supplied through the fuel distribution pipe 14 to the engine. A plurality of fuel injectors 16 are injected to the combustion chamber in the main body 18 to be combusted, and the battery 20 for supplying power to the vehicle is connected to the ignition switch 22 and to shut off the fuel line in an emergency. A control switch 24 is connected, which is preferably mounted on the driver front panel so that it can be easily operated by the driver in an emergency.

그리고, 상기 고압용기(10)와 감압기(12) 사이의 연료라인(26)에는 상기 제어스위치(24)의 접속시에 점화스위치(22)를 통해 상기 배터리(20)로부터 전원에 의해 개방상태로 유지되는 반면 상기 제어스위치(24)의 비접속시에는 폐쇄상태로 되어 고압용기 (10)로부터 고압의 압축천연가스를 차단하는 연료라인개폐장치(28)가 개재되고, 또 상기 감압기(12)와 연료분배관(14) 사이의 연료라인(30)에도 상기 연료라인개폐장치(28)와 동일한 작용을 수행하는 연료라인개폐장치(30)가 개재되는 바, 바람직하게 그 연료라인개폐장치(28, 32)는 상기 제어스위치(24)에 의해 단속되는 전원에 의해 동작제어되어 각 연료라인(26, 30)을 개폐하는 솔레노이드를 포함하는 전자밸브가 채용된다.The fuel line 26 between the high pressure vessel 10 and the pressure reducer 12 is opened by a power source from the battery 20 through the ignition switch 22 when the control switch 24 is connected. On the other hand, when the control switch 24 is disconnected, a fuel line opening and closing device 28 for closing the high pressure compressed natural gas from the high pressure container 10 is interposed and the pressure reducer 12 is interposed. The fuel line opening and closing device 30 which performs the same function as the fuel line opening and closing device 28 is also interposed in the fuel line 30 between the fuel distribution pipe 14 and the fuel distribution pipe 14. 28 and 32 are solenoid valves including solenoids which are operated and controlled by a power interrupted by the control switch 24 to open and close the respective fuel lines 26 and 30.

상기와 같이 구성된 본 발명에 따른 CNG 차량의 연료차단장치에서는 상기 제어스위치(24)가 접속된 상태로부터 배터리(20)의 전원을 이용하여 점화스위치(22)에 의해 점화상태로 되면, 상기 연료라인차단장치(28, 32)가 개방상태로 유지되고, 그에 따라 고압용기(10)내에 고압으로 저장된 압축천연가스는 개방된 연료라인차단장치(28)를 통해 감압기(12)에 공급되어 그 감압기(12)에서 적정한 압력으로 감압되고, 그 감압된 압축천연가스는 개방된 연료라인차단장치(32)와 연료분배관(14)을 통해 다수의 연료분사기(Injector ; 16)에 공급되어 도시되지 않은 전자제어장치(ECM 장치)의 제어하에 엔진 본체(18)의 연소실내로 유입되어 연소된다.In the fuel cutoff device of the CNG vehicle according to the present invention configured as described above, when the control switch 24 is connected to the ignition state by the ignition switch 22 using the power of the battery 20, the fuel line The shutoff devices 28 and 32 are kept open, and thus the compressed natural gas stored at high pressure in the high pressure vessel 10 is supplied to the pressure reducer 12 through the open fuel line shutoff device 28 to reduce the pressure. The pressure is reduced to a proper pressure in the apparatus 12, and the reduced compressed natural gas is supplied to the plurality of fuel injectors 16 through the open fuel line shutoff device 32 and the fuel distribution pipe 14, and is not shown. Under the control of an electronic control unit (ECM device), it is introduced into and combusted in the combustion chamber of the engine main body 18.

이러한 상태에서, 예컨데 차량의 추돌 또는 충돌에 의한 비상사태에서 상기 제어스위치(24)를 비접속상태로 조작하게 되면 상기 연료라인차단장치(28, 32)가 연료라인 (26, 30)을 차단하게 되고, 그에 따라 상기 고압용기(10)로부터의 압축천연가스가 차단되는 한편 상기 감압기(32)측으로부터 연료분배관(14)으로 공급되는 감압된 상태의 압축천연가스도 차단되어 가스의 누출이 방지된다.In this state, for example, when the control switch 24 is operated in an unconnected state in an emergency caused by a collision or collision of the vehicle, the fuel line shutoff devices 28 and 32 block the fuel lines 26 and 30. Accordingly, the compressed natural gas from the high pressure vessel 10 is blocked, while the compressed natural gas supplied from the decompressor 32 to the fuel distribution pipe 14 is also blocked, thereby preventing the leakage of gas. Is prevented.

이상에서 설명한 바와 같이, 본 발명에 따른 CNG 차량의 연료차단장치에 의하면, 비상시 제어스위치의 조작에 따라 연료라인차단장치가 고압용기 및 감압기측의 연료라인을 차단하게 되므로, 가스의 누설과 그에 따른 화재 및 폭발의 위험성이 현저하게 감소되거나 방지될 수 있다.As described above, according to the fuel cutoff device of the CNG vehicle according to the present invention, since the fuel line cutoff device blocks the fuel line on the high pressure vessel and the pressure reducer according to the operation of the control switch in an emergency, the leakage of gas and the The risk of fire and explosion can be significantly reduced or prevented.

Claims (2)

고압의 압축천연가스가 수용된 고압용기(10)와, 이 고압용기(10)로부터 공급되는 고압의 압축천연가스를 일정한 압력으로 감압하는 감압기(12), 이 감압기(12)에 의해 감압된 압축천연가스를 연료분배관(14)을 통해 공급받아 엔진 본체(18)의 연소실로 분사하여 연소되도록 하는 다수의 연료분사기(16)를 갖추어 구성된 CNG 차량의 연료공급계통에 있어서, 차량 내부의 운전석 전방 패널상에 설치되어 상기 연료공급계통의 연료라인(26, 32)을 개폐제어하기 위한 제어스위치(24)와 ; 상기 제어스위치(24)에 의해 전기적으로 제어되어 상기 고압용기(10)측의 연료라인(26)과 상기 감압기(12) 또는 연료분배관(14)측의 연료라인(30)을 개폐하는 연료라인개폐장치(28, 32)를 갖추어 구성된 것을 특징으로 하는 CNG 차량의 연료차단장치.A high pressure vessel 10 in which a high pressure compressed natural gas is accommodated, a pressure reducer 12 for reducing the high pressure compressed natural gas supplied from the high pressure vessel 10 to a constant pressure, and the pressure reduced by the pressure reducer 12 In the fuel supply system of a CNG vehicle, which is provided with a plurality of fuel injectors 16 for supplying compressed natural gas through the fuel distribution pipe 14 and injecting the combustion chamber into the combustion chamber of the engine body 18, the driver's seat inside the vehicle. A control switch 24 installed on the front panel to control the opening and closing of the fuel lines 26 and 32 of the fuel supply system; The fuel is electrically controlled by the control switch 24 to open and close the fuel line 26 on the high pressure vessel 10 side and the fuel line 30 on the pressure reducer 12 or fuel distribution pipe 14 side. A fuel cutoff device for a CNG vehicle, characterized in that the line opening and closing device (28, 32) is provided. 제1항에 있어서, 상기 연료라인 개폐장치(28, 32)는 상기 제어스위치(24)에 의해 전기적으로 제어되어 상기 연료라인(28, 30)을 개폐하는 솔레이노이드를 포함하는 전자밸브로 구성되는 것을 특징으로 하는 CNG 차량의 연료차단장치.According to claim 1, wherein the fuel line opening and closing device 28, 32 is electrically controlled by the control switch 24 is composed of a solenoid valve including a solenoid to open and close the fuel line (28, 30) Fuel cutoff device of a CNG vehicle, characterized in that.
KR1019940008322A 1994-04-20 1994-04-20 Fuel feeding controller KR960003241B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940008322A KR960003241B1 (en) 1994-04-20 1994-04-20 Fuel feeding controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940008322A KR960003241B1 (en) 1994-04-20 1994-04-20 Fuel feeding controller

Publications (2)

Publication Number Publication Date
KR950029563A KR950029563A (en) 1995-11-22
KR960003241B1 true KR960003241B1 (en) 1996-03-07

Family

ID=19381366

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940008322A KR960003241B1 (en) 1994-04-20 1994-04-20 Fuel feeding controller

Country Status (1)

Country Link
KR (1) KR960003241B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020045119A (en) * 2000-12-08 2002-06-19 이계안 Vaporizer of vehicle for liquefied petroleum gas

Also Published As

Publication number Publication date
KR950029563A (en) 1995-11-22

Similar Documents

Publication Publication Date Title
KR100297294B1 (en) Fuel device for lng vehicle
KR100620416B1 (en) Fuel pump noise reducing apparatus in a LPI vehicle
KR960003241B1 (en) Fuel feeding controller
KR102316646B1 (en) A system for adapting an internal combustion engine to be driven by gaseous gaseous fuel and liquid gaseous fuel
KR100437084B1 (en) Fuel supply apparatus of gas fuel automobile
US7600702B2 (en) Fuel injection system
WO2014091679A1 (en) Fuel injection control device for internal combustion engine
KR100619704B1 (en) Fuel pump noise reducing apparatus in a LPI vehicle
KR20050017643A (en) System for checking and cutting off leaking-gas for LPG vehicle
KR100305849B1 (en) Gas supply device of compressed natural gas vehicle
KR20150087597A (en) Fuel supply apparatus for LPG and NG
KR100292891B1 (en) Safety apparatus of compressed natural gas engine
JPH05156974A (en) Fuel supply system for combination service-emergency generator
KR100208758B1 (en) Apparatus for exhausting residual gas in a hydrogen engine
KR100308936B1 (en) Explosion safety device for lpg vehicle
KR100313802B1 (en) Sufety device for compression natural gas vehicle
KR0162041B1 (en) Device of fuel leakage intercept for a cng vehicle
KR19990024848U (en) LPG engine intake
KR100280670B1 (en) Gas cylinder safety device for compressed natural gas vehicle
RU2136932C1 (en) Gas supply system for internal-combustion engine
KR100251906B1 (en) Oxygen supplying system for ignition system of an automobile
KR20000034556A (en) Emergency fuel intercepting device of lpg vehicle
JPS6296769A (en) Fuel feeder for internl combustion engine
KR20020044512A (en) Apparatus for stopping an engine while fuel is poured into a fuel tank in a motor vehicle using LPG as fuel
KR100350887B1 (en) Fuel supply apparatus for cng engine

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20010228

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee