KR19980045541U - Gas leak prevention device of LP vehicle by pressure of vaporizer - Google Patents

Gas leak prevention device of LP vehicle by pressure of vaporizer Download PDF

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Publication number
KR19980045541U
KR19980045541U KR2019960058683U KR19960058683U KR19980045541U KR 19980045541 U KR19980045541 U KR 19980045541U KR 2019960058683 U KR2019960058683 U KR 2019960058683U KR 19960058683 U KR19960058683 U KR 19960058683U KR 19980045541 U KR19980045541 U KR 19980045541U
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South Korea
Prior art keywords
gas
pressure
vaporizer
vehicle
tank
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KR2019960058683U
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Korean (ko)
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최도일
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박병재
현대자동차 주식회사
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Priority to KR2019960058683U priority Critical patent/KR19980045541U/en
Publication of KR19980045541U publication Critical patent/KR19980045541U/en

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    • 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
    • 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
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • 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
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • 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
    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating

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  • 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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

본 고안은 사고나 기타 외부의 충격으로 인하여 가스누출시 가스탱크의 가스배출을 차단할 수 있도록 하는 베이퍼라이저의 압력에 의한 LP 차량의 가스 누출방지장치에 관한 것이다. 즉, 이는 LP가스가 저장되어 있는 가스탱크(11)와, 고압의 LP가스의 압력을 저압으로 조정하는 고압/저압 조정기를 갖으며 LP가스를 엔진에 공급하는 베이퍼라이저(12)를 갖는 LP가스 차량에 있어서, 베이퍼라이저(12)에 충진되어 있는 LP가스의 압력을 감지하는 압력센서(13)와, 이 압력센서(13)의 압력값(P)을 기준압력(MAP)과 대비하여 이상 압력상태를 확인하고 이상시 LP가스의 누출을 차단하도록 솔레노이드 밸브(SV1~SV4)를 닫는 엔진 전자제어장치(14)와, 가스탱크(11)와 베이퍼라이저(12)를 연결하는 공급 파이프(15)상에 접속되어 있으며 엔진 전자제어장치(14)의 제어로 가스의 흐름을 차단하는 솔레노이드 밸브(SV1~SV4)를 구성함으로써, 사고나 기타 외부의 충격으로 인해서 가스누출시 가스탱크의 가스 배출을 차단하여 안전사고를 미연에 방지할 수 있는 것이다.The present invention relates to a gas leak prevention device of LP vehicle by the pressure of the vaporizer to block the gas discharge of the gas tank when the gas leakage due to an accident or other external impact. That is, the LP gas vehicle has a gas tank 11 in which LP gas is stored, a high pressure / low pressure regulator for adjusting the pressure of the high pressure LP gas to low pressure, and a vaporizer 12 for supplying the LP gas to the engine. The pressure sensor 13 for detecting the pressure of the LP gas filled in the vaporizer 12 and the pressure value P of the pressure sensor 13 are compared with the reference pressure MAP to determine the abnormal pressure state. Connected on the engine electronic controller 14 which closes the solenoid valves SV1 to SV4 and checks the abnormality and prevents the leakage of LP gas, and on the supply pipe 15 connecting the gas tank 11 and the vaporizer 12. By configuring the solenoid valves (SV1 to SV4) to block the flow of gas under the control of the engine electronic control device 14, the gas accident of the gas tank is prevented when the gas leaks due to an accident or other external shock Can be prevented .

Description

베이퍼라이저의 압력에 의한 LP 차량의 가스 누출방지장치Gas leak prevention device of LP vehicle by pressure of vaporizer

본 고안은 베이퍼라이저(Vaporizer)의 압력에 의한 LP 차량의 가스 누출방지장치에 관한 것으로서, 더욱 상세하게는 사고나 기타 외부의 충격으로 인하여 가스 누출시 가스탱크(Bombe)의 가스배출을 차단할 수 있도록 하는 베이퍼라이저의 압력에 의한 LP 차량의 가스 누출방지장치에 관한 것이다.The present invention relates to a gas leak prevention device of LP vehicle under pressure of vaporizer, and more specifically, to prevent gas discharge from gas tank (Bombe) in case of gas leakage due to accident or other external impact. The present invention relates to a gas leakage preventing device of an LP vehicle caused by a pressure of a vaporizer.

종래 LP가스 차량에 적용되고 있는 LP가스 장치를 도 3에 의해서 살펴보면, 이는 LP가스가 저장되어 있는 가스탱크(101)와, 이 가스탱크(101)에서 배출되는 LP가스를 필터링하는 여과기(102)와, 미도시된 엔진 전자제어장치의제어로 가스탱크(101)의 가스의 배출을 단속하는 전자밸브(103)와, 고압의 LP가스의 압력을 저압으로 조정하는 고압/저압 조정기를 갖는 베어퍼라이저(106)와, 이 베어퍼라이저(106)에서 배출되는 LP가스를 공기와 혼합하여 엔진(108)의 연소실에 공급되는 혼합기(107)로 구성되어 있다.Referring to the LP gas apparatus applied to the conventional LP gas vehicle by referring to Figure 3, which is a gas tank 101, the LP gas is stored, and the filter 102 for filtering the LP gas discharged from the gas tank 101 And a bearer having a solenoid valve 103 for controlling the discharge of the gas in the gas tank 101 by controlling the engine electronic controller not shown, and a high pressure / low pressure regulator for adjusting the pressure of the high pressure LP gas to a low pressure. The riser 106 and the mixer 107 supplied to the combustion chamber of the engine 108 by mixing LP gas discharged from the bare riser 106 with air.

이는 자동차의 후방에 설치되어 있는 가스탱크(101)에 충진되어 있는 액체상태의 LP가스는 여과기(102)를 통하여 이물질이 필터링되어 전자밸브(103)에 공급된다. 이때 전자밸브(103)는 운전자가 차량을 운행하기 위해서 점화스위치(105)를 조작함에 따라 배터리(104)에서 출력되는 전원이 인가되어 오픈 된다. 즉, 차량을 운행하지 않는 경우 가스탱크(101)에 충진되어 있는 LP가스가 엔진룸을 비롯하여 외부로 배출되는 것을 방지하기 위해서 전자밸브(103)를 닫는다.This is the liquid LP gas filled in the gas tank 101 installed in the rear of the vehicle is foreign matter is filtered through the filter 102 is supplied to the solenoid valve 103. At this time, the solenoid valve 103 is opened by applying the power output from the battery 104 as the driver operates the ignition switch 105 to drive the vehicle. That is, when the vehicle is not running, the solenoid valve 103 is closed to prevent the LP gas filled in the gas tank 101 from being discharged to the outside including the engine room.

이어서 가스탱크(101)에서 배출되는 고압의 가스는 2단의 조정기 즉, 고압조정기와 저압조정기로 구성되어 있는 베어퍼라이저(106)에 의해 저압의 LP가스로 조정되어 혼합기(107)로 공급된다. 이에 따라 엔진(108)의 연소실에 이 LP가스가 공급되어 연소됨으로써 엔진의 추진력을 얻을 수 있는 것이다.Subsequently, the high pressure gas discharged from the gas tank 101 is adjusted to LP gas of low pressure by the bearer riser 106 composed of two stage regulators, that is, the high pressure regulator and the low pressure regulator, and is supplied to the mixer 107. . Accordingly, the LP gas is supplied to and combusted in the combustion chamber of the engine 108 to obtain the propulsion force of the engine.

그러나 상기한 바와 같은 LP가스 차량에서는 사고나 기타 외부요인으로 인하여 공급파이프나 베이퍼라이저 등이 파손된 상태에서도 시동이 걸려 있으면 전자밸브가 계속적으로 오픈 상태를 유지하여 LP가스가 누출되고, 이로 인해 안전사고를 유발하는 결점이 있다.However, in the LP gas vehicle as described above, if the engine is still started even when the supply pipe or vaporizer is damaged due to an accident or other external factors, the solenoid valve is kept open and LP gas leaks, resulting in a safety accident. There is a flaw that causes.

이에 본 고안은 상기한 바와 같은 종래의 결점을 해결하기 위해서 제안된 것으로, 사고나 기타 외부의 충격으로 인하여 가스누출시 가스탱크(Bombe)의 가스배출을 차단하여 안전하고를 미연에 방지할 수 있도록 하는 베이퍼라이저의 압력에 의한 LP 차량의 가스 누출방지장치를 제공하고자 하는데 그 목적이 있다.In this regard, the present invention is proposed to solve the conventional drawbacks as described above, so as to prevent the discharge of gas from the gas tank (Bombe) due to an accident or other external impact to prevent the safety The purpose of the present invention is to provide a gas leakage preventing device of LP vehicle by the pressure of vaporizer.

도 1은 본 고안에 따른 블록 구성도,1 is a block diagram according to the present invention,

도 2는 본 고안의 동작상태를 도시한 흐름도,2 is a flowchart illustrating an operating state of the present invention;

도 3은 종래 LP가스장치를 도시한 개략 구성도이다.3 is a schematic configuration diagram showing a conventional LP gas apparatus.

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

11 : 가스탱크12 : 베어퍼라이저11: gas tank 12: bearer

13 : 압력센서14 : 엔진 전자제어장치13 pressure sensor 14 engine electronic control device

15 : 공급 파이프SV1~SV4 : 솔레노이드 밸브15: supply pipe SV1 to SV4: solenoid valve

이하, 본 고안의 일 실시예에 따른 구성을 첨부된 예시도면과 함께 보다 상세히 설명하면 다음과 같다.Hereinafter, the configuration according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 고안에 따른 블록 구성도이고, 도 2는 본 고안의 동작상태를 도시한 흐름도이다.1 is a block diagram according to the present invention, Figure 2 is a flow chart showing an operating state of the present invention.

본 고안은 도 1에 도시한 바와 같이 LP가스가 저장되어 있는 가스탱크(11)와, 고압의 LP가스의 압력을 저압으로 조정하는 고압/저압 조정기를 갖으며 LP가스를 엔진에 공급하는 베이퍼라이저(12)를 갖는 LP가스 차량에 있어서, 베이퍼라이저(12)에 충진되어 있는 LP가스의 압력을 감지하는 압력센서(13)와, 이 압력센서(13)의 압력값(P)을 기준압력(MAP)과 대비하여 이상 압력상태를 확인하고 이상시 LP가스의 누출을 차단하도록 솔레노이드 밸브(SV1~SV4)를 닫는 엔진 전자제어장치(14)와, 가스탱크(11)와 베이퍼라이저(12)를 연결하는 공급 파이프(15)상에 접속되어 있으며 엔진 전자제어장치(14)의 제어로 가스의 흐름을 차단하는 솔레노이드 밸브(SV1~SV4)로 구성되어 있다.The present invention has a gas tank 11 in which LP gas is stored as shown in FIG. 1, and a high pressure / low pressure regulator for adjusting the pressure of high pressure LP gas to low pressure, and a vaporizer for supplying LP gas to the engine ( In the LP gas vehicle having 12), the pressure sensor 13 for detecting the pressure of the LP gas filled in the vaporizer 12 and the pressure value P of the pressure sensor 13 are referred to as the reference pressure MAP. In contrast, the supply of the engine electronic control unit 14 which closes the solenoid valves SV1 to SV4 and the gas tank 11 and the vaporizer 12 to check the abnormal pressure state and to block the leakage of LP gas in case of an abnormality. It is connected to the pipe 15, and consists of solenoid valves SV1-SV4 which interrupt the flow of gas by control of the engine electronic control apparatus 14.

도 2는 본 고안에 따른 동작상태를 보인 흐름도로서, 베이퍼라이저(12)에 충진되어 있는 LP가스의 압력(P)이 기준압력(MAP;16.8㎏/㎠)보다 낮으면 베이퍼라이저(12)를 비롯한 LP가스 공급장치에 이상이 있는 것으로 판단하고, 솔레노이드 밸브(SV1~SV4)를 차단시켜 가스탱크(11)에서 배출되는 LP가스를 차단함을 보이고 있다.2 is a flow chart showing an operation state according to the present invention, the LP including the vaporizer 12 when the pressure (P) of the LP gas filled in the vaporizer 12 is lower than the reference pressure (MAP; 16.8kg / ㎠) Judging that there is an abnormality in the gas supply device, by blocking the solenoid valve (SV1 ~ SV4) has been shown to block the LP gas discharged from the gas tank (11).

이와 같이 구성된 본 고안의 작용을 설명한다.The operation of the present invention configured as described above will be described.

압력센서(13)에 의해 감지되는 베이퍼라이저(12)의 압력(P)은 인가(S21)받은 엔진 전자제어장치(14)는이 압력(P)과 기준압력(MAP;16.8㎏/㎠)을 대비한다(S22). 그리고 이 압력(P)이 기준압력(MAP)보다 높은지를 확인한다(S23). 그 결과 압력(P)이 기준압력(MAP)보다 높으면, 연료탱크(11)에서 공급되는 LP가스가 정상적으로 공급 파이프(15)와 베이퍼라이저(12)를 거쳐 엔진에 공급되는 것으로 판정하고, 각 솔레노이드 밸브(SV1~SV4)를 오픈 시킨다.The pressure P of the vaporizer 12 sensed by the pressure sensor 13 is applied (S21) to the engine electronic controller 14 which contrasts the pressure P and the reference pressure MAP; 16.8 kg / cm 2. (S22). Then, it is checked whether the pressure P is higher than the reference pressure MAP (S23). As a result, when the pressure P is higher than the reference pressure MAP, it is determined that the LP gas supplied from the fuel tank 11 is normally supplied to the engine via the supply pipe 15 and the vaporizer 12, and each solenoid valve Open (SV1 ~ SV4).

하지만 압력(P)이 기준압력(MAP)보아 낮으면, 즉 사고나 기타 외부요인으로 인하여 압력센서(13)에서 공급되는 LP가스의 압력이 기준압력(MAP)보다 낮아지면 공급 파이프(15)와 베이퍼라이저(12)를 거쳐 엔진에 공급되는 LP가스가 누출되는 것으로 판정하고, 각 솔레노이드 밸브(SV1~SV4)를 클로즈 시켜 더 이상의 가스누출을 정지시킨다(S25). 이에 따라 가스누출로 인한 안전사고를 미연에 방지할 수 있는 것이다.However, if the pressure P is lower than the reference pressure MAP, that is, if the pressure of the LP gas supplied from the pressure sensor 13 is lower than the reference pressure MAP due to an accident or other external factors, the supply pipe 15 and It is determined that the LP gas supplied to the engine leaks through the vaporizer 12, and the solenoid valves SV1 to SV4 are closed to stop further gas leakage (S25). Accordingly, safety accidents due to gas leakage can be prevented in advance.

이상에서와 같이 본 고안은 사고시 혹은 외부충격으로 인하여 베이퍼라이저에 공급되는 LP가스의압력이 기준압력이하로 떨어질 때 가스탱크의 후단에 구성되어 있는 다수개의 솔레노이드 밸브를 닫아 LP가스의 누출로 인한 안전사고를 미연에 방지할 수 있는 것이다.As described above, the present invention closes a plurality of solenoid valves configured at the rear of the gas tank in case of an accident or when the pressure of the LP gas supplied to the vaporizer drops below the standard pressure due to external shock, thereby causing a safety accident due to the leakage of LP gas. This can be prevented in advance.

본 고안은 상술한 특정의 바람직한 실시예에 한정되지 아니하면, 실용신안등록청구의 범위에서 청구하는 본 고안의 요지를 벗어남이 없이 당해 고안이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.The present invention is not limited to the above-described specific preferred embodiment, any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the utility model registration claims Implementation will be possible.

Claims (1)

LP가스가 저장되어 있는 가스탱크(11)와, 고압의 LP가스의 압력을 저압으로 조정하는 고압/저압 조정기를 갖으며 LP가스를 엔진에 공급하는 베이퍼라이저(12)를 갖는 LP가스 차량에 있어서,In an LP gas vehicle having a gas tank (11) in which LP gas is stored, and a vaporizer (12) for supplying the LP gas to the engine, and having a high pressure / low pressure regulator for adjusting the pressure of the high pressure LP gas to a low pressure, 베이퍼라이저(12)에 충진되어 있는 LP가스의 압력을 감지하는 압력센서(13)와;A pressure sensor 13 for detecting the pressure of the LP gas filled in the vaporizer 12; 이 압력센서(13)의 압력값(P)을 기준압력(MAP)과 대비하여 이상 압력상태를 확인하고 이상시 LP가스의 누출을 차단하도록 솔레노이드 밸브(SV1~SV4)를 닫는 엔진 전자제어장치(14);The engine electronic control unit which checks the abnormal pressure state by comparing the pressure value P of the pressure sensor 13 with the reference pressure MAP and closes the solenoid valves SV1 to SV4 to block the leakage of LP gas in case of abnormality. 14); 가스탱크(11)와 베이퍼라이저(12)를 연결하는 공급 파이프(15)상에 접속되어 있으며 엔진 전자제어장치(14)의 제어로 가스의 흐름을 차단하는 솔레노이드 밸브(SV1~SV4)로 포함하여 구성되어짐을 특징으로 하는 베이퍼라이저의 압력에 의한 LP 차량의 가스 누출방지장치.It is connected to the supply pipe 15 which connects the gas tank 11 and the vaporizer 12, and consists of solenoid valves SV1-SV4 which block the flow of gas by the control of the engine electronic control apparatus 14. Gas leak prevention device of LP vehicle by the pressure of vaporizer characterized in that.
KR2019960058683U 1996-12-27 1996-12-27 Gas leak prevention device of LP vehicle by pressure of vaporizer KR19980045541U (en)

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