KR20020040053A - Fuel supply control method of lpg vehicle - Google Patents

Fuel supply control method of lpg vehicle Download PDF

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Publication number
KR20020040053A
KR20020040053A KR1020000069964A KR20000069964A KR20020040053A KR 20020040053 A KR20020040053 A KR 20020040053A KR 1020000069964 A KR1020000069964 A KR 1020000069964A KR 20000069964 A KR20000069964 A KR 20000069964A KR 20020040053 A KR20020040053 A KR 20020040053A
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South Korea
Prior art keywords
fuel supply
terminal
lpg
ignition switch
relay
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KR1020000069964A
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Korean (ko)
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정치원
홍성수
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이계안
현대자동차주식회사
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Priority to KR1020000069964A priority Critical patent/KR20020040053A/en
Publication of KR20020040053A publication Critical patent/KR20020040053A/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
    • 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
    • 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

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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)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE: A method for controlling the fuel supply of an LPG(Liquefied Petroleum Gas) vehicle is provided to enhance the convenience for a driver, to avoid the remaining of the fuel in a fuel supply line, and to prevent the freezing of the fuel supply line by connecting or disconnecting the fuel supply via an ignition switch. CONSTITUTION: A method for controlling the fuel supply of an LPG vehicle comprises the steps of analyzing the operation state of an ignition switch and the voltage of an alternator terminal(11,21), connecting or disconnecting fuel supply to a fuel supply line by opening and closing a solenoid valve via a first relay connected with the ignition switch(12,22), and turning on/off electrical devices related with the starting of an engine by turning on/off a second relay connected with a battery(13,23). Since the supply of LPG is connected and disconnected via the ignition switch without an LPG switch, the convenience of a driver is improved.

Description

엘피지 자동차의 연료공급 제어방법{FUEL SUPPLY CONTROL METHOD OF LPG VEHICLE}FUEL SUPPLY CONTROL METHOD OF LPG VEHICLE}

본 발명은 엘피지 자동차의 연료공급 제어방법에 관한 것으로, 특히 이그니션 스위치의 조작에 의해 LPG연료의 공급과 차단을 자동적으로 수행할 수 있도록된 엘피지 자동차의 연료공급 제어방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply control method for an Elpgi vehicle, and more particularly, to a fuel supply control method for an LPG vehicle that is capable of automatically supplying and shutting off LPG fuel by operating an ignition switch.

일반적으로, 액화석유가스(LPG ; Liquefied Petroleum Gas)를 연료로 사용하는 자동차에는 동절기시 시동이 원활하게 이루어지게 하거나 또는 LPG연료가 연료공급라인상에서 동결되는 것을 방지하기 위한 엘피지스위치(이하, LPG스위치라 함)가 구비되어 있다.In general, an LPG switch (LPG switch) is used for automobiles that use liquefied petroleum gas (LPG) as a fuel to smoothly start during the winter season or to prevent the LPG fuel from freezing on the fuel supply line. Is provided.

즉, 운전자는 시동을 걸기 전에 먼저 LPG스위치를 온(ON)시켜 LPG연료를 연료공급라인을 통해 엔진으로 공급한 다음 이그니션 스위치를 온(ON)시킴으로써, 동절기시 시동이 원활하게 이루어지도록 조작하게 된다.In other words, the driver first operates the LPG switch on before supplying the LPG fuel to the engine through the fuel supply line, and then turns on the ignition switch to operate the vehicle smoothly during the winter season. .

또한, 운전자는 시동을 끄기 전에 먼저 LPG스위치를 오프(OFF)시켜 연료공급라인상에 잔재되어 있던 LPG연료를 모두 소모한 다음 이그니션 스위치를 오프(OFF)시킴으로써, 동절기시 LPG연료에 의해 연료공급라인이 동결되는 것을 방지하게 된다.In addition, the driver first turns off the LPG switch before turning off the engine, exhausts the remaining LPG fuel on the fuel supply line, and then turns off the ignition switch. This prevents it from freezing.

그러나, 상기와 같은 일반적인 LPG자동차는 운전자가 시동을 걸거나 시동을 끄기 전에 항상 LPG스위치를 먼저 조작하여야 하기 때문에 번거로운 LPG스위치의 조작으로 운전자의 편의성이 나빠지게 됨은 물론, 동절기시 운전자의 부주의로 인해 LPG스위치를 끄지 않은 상태에서 시동을 끄게 되어 연료공급라인이 잔재되어 있던 LPG연료가 동결됨으로써 시동이 걸리지 않게 되는 문제점이 있었다.However, in the general LPG vehicle as described above, since the LPG switch must be operated first before the driver starts or turns off the engine, the inconvenience of the driver is deteriorated by the troublesome operation of the LPG switch. There was a problem that the start is not stopped by turning off the LPG switch without turning off the LPG fuel in which the fuel supply line remains frozen.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 연료공급라인상에 장착되어 LPG연료를 엔진쪽으로 공급 또는 차단시키기 위해 작동되는 솔레노이드밸브가 이그니션 스위치의 조작에 의해 제어됨으로써, 운전자가 별도로 LPG스위치를 조작하지 않아도 되므로 운전자의 편의성이 향상됨은 물론, 동절기시 연료공급라인이 동결되는 것을 미리 예방할 수 있도록 된 엘피지 자동차의 연료공급 제어방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, the solenoid valve is mounted on the fuel supply line and operated to supply or cut off the LPG fuel to the engine is controlled by the operation of the ignition switch, the driver separately Since the LPG switch does not need to be operated, the purpose of the driver's convenience is improved, as well as the fuel supply control method of the LPG vehicle which can prevent the fuel supply line from freezing in winter.

상기와 같은 목적을 달성하기 위한 본 발명은, 이그니션 스위치의 조작상태와 올터네이터 발전단자(L단자)의 전압이 제어부에 의해 분석되는 단계와, 상기 제어부의 신호에 의해 이그니션 스위치의 전원과 연결된 제1릴레이가 온(ON)/오프(OFF)되면서 솔레노이드밸브가 개폐되어 LPG연료가 연료공급라인으로 공급되거나 또는 공급이 차단되는 단계와, 상기 제어부의 신호에 의해 배터리의 전원과 연결된 제2릴레이가 온(ON)/오프(OFF)되면서 엔진시동관련 전장품을 온(ON)/오프(OFF)시키는 단계로 이루어진 것을 특징으로 한다.The present invention for achieving the above object, the step of analyzing the operating state of the ignition switch and the voltage of the alternator power terminal (L terminal) by the control unit, the first connected to the power supply of the ignition switch by the signal of the control unit When the relay is turned on or off, the solenoid valve is opened and closed so that the LPG fuel is supplied to the fuel supply line or the supply is cut off, and the second relay connected to the power of the battery by the signal of the controller On / off (OFF) characterized in that consisting of the step of turning (ON) / off (OFF) the electrical equipment related to the engine start.

도 1은 본 발명에 따라 LPG 연료의 공급을 제어하기 위한 회로도,1 is a circuit diagram for controlling the supply of LPG fuel in accordance with the present invention;

도 2는 본 발명에 따라 LPG 연료의 공급을 제어하기 위한 순서도이다.2 is a flow chart for controlling the supply of LPG fuel in accordance with the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1 - 이그니션 스위치 2 - 배터리1-ignition switch 2-battery

3 - 제어부 4 - 올터네이터 발전단자(L단자)3-Control Unit 4-Alternator Power Terminal (L Terminal)

5 - 제1릴레이 6 - 솔레노이드밸브5-Relay 1-Solenoid Valve

7 - 제2릴레이 8 - 엔진시동관련 전장품7-2nd Relay 8-Electrical Parts Related to Engine Start

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따라 LPG 연료의 공급을 제어하기 위한 회로도이고, 도 2는 본 발명에 따라 LPG 연료의 공급을 제어하기 위한 순서도로서, 본 발명에 따라 LPG연료의 공급을 제어하는데 사용되는 이그니션 스위치(1)는 전원을 공급하는 배터리(2) 및 상기 이그니션 스위치(1)의 조작상태여부를 판별하는 제어부(3)와 연결되어 있고, 이 제어부(3)는 올터네이터의 발전단자(L단자; 4)와 연결되는 구성으로 되어 있다.1 is a circuit diagram for controlling the supply of LPG fuel in accordance with the present invention, Figure 2 is a flow chart for controlling the supply of LPG fuel in accordance with the present invention, the ignition used to control the supply of LPG fuel in accordance with the present invention The switch 1 is connected to a battery 2 for supplying power and a control unit 3 for determining whether the ignition switch 1 is in an operating state, and the control unit 3 is a power generation terminal (L terminal) of an alternator. It is connected to 4).

또한, 상기 제어부(3)는 제1릴레이(5)를 통해 연료탱크에서 엔진쪽으로 연결되는 연료공급라인(도시않됨)상에 장착된 솔레노이드밸브(6)와 연결되면서, 제2릴레이(7)를 통해 엔진시동에 관련되어 온(ON)/오프(OFF)되는 각종 전장품(8)과 연결되는 구성으로 되어 있다.In addition, the control unit 3 is connected to the solenoid valve 6 mounted on the fuel supply line (not shown) connected from the fuel tank to the engine via the first relay 5, and the second relay 7 is connected. It is configured to be connected to various electric appliances 8 that are turned on / off in connection with engine start through the engine.

따라서, 운전자가 시동이 오프(OFF)된 상태의 차량에 탑승하여 상기 이그니션 스위치(1)를 악세사리단자(ACC)상태 또는 온단자(ON)상태로 조작하게 되면(단계 11), 상기 제어부(3)가 이를 판별하여 제2릴레이(7)를 온(ON)시킴으로서 엔진시동 전장품(8)들을 점등시키게 된다.(단계 12)Therefore, when the driver boards the vehicle in which the ignition is turned off and operates the ignition switch 1 in the accessory terminal (ACC) state or the on terminal (ON) state (step 11), the control unit 3 ) Determines this and turns on the second relay 7 to light up the engine starting electronics 8 (step 12).

그리고, 상기 제어부(3)는 올터네이터의 발전단자(L단자; 4)로부터 전달된 신호를 분석하여 상기 올터네이터 발전단자(L단자; 4)의 전압이 5V 이상이면(단계 13) 상기 제1릴레이(5)를 온(ON)시켜 솔레노이드밸브(6)를 개방시킴으로써(단계 14), LPG연료를 엔진쪽으로 공급하게 되며 이로인해 차량은 시동온(ON)이 가능한 상태로 유지되게 된다.The controller 3 analyzes the signal transmitted from the power generator terminal (L terminal) 4 of the alternator, and if the voltage of the alternator power terminal (L terminal) 4 is 5V or more (step 13), the first By turning the relay 5 ON to open the solenoid valve 6 (step 14), the LPG fuel is supplied to the engine, whereby the vehicle is kept in the ON state.

또한, 시동이 온(ON)된 상태의 차량에서 운전자가 이그니션 스위치(1)를 온단자(ON)상태에서 악세사리단자(ACC)상태로 조작하게 되면(단계 21), 상기 제어부(3)가 이를 판별하여 제1릴레이(5)를 오프(OFF)시켜 솔레노이드밸브(6)를 밀폐시킴으로써(단계 22), 엔진쪽으로 공급되는 LPG연료의 공급이 차단되게 된다.In addition, when the driver operates the ignition switch 1 from the on terminal (ON) state to the accessory terminal (ACC) state in the vehicle in the state of starting (ON) (step 21), the control unit 3 By discriminating and turning off the first relay 5 to close the solenoid valve 6 (step 22), the supply of LPG fuel supplied to the engine is cut off.

그리고, 제어부(3)는 올터네이터의 발전단자(L단자; 4)로부터 전달된 신호를 분석하여 상기 올터네이터 발전단자(L단자; 4)의 전압이 5V 미만이면(단계 23) 상기 제2릴레이(7)를 오프(OFF)시켜 엔진시동 전장품(8)들을 소등시키게 되며(단계 24), 이로인해 차량은 시동오프(OFF)가 가능한 상태로 유지되게 된다.The controller 3 analyzes the signal transmitted from the power generator terminal (L terminal) 4 of the alternator, and if the voltage of the alternator power terminal (L terminal) 4 is less than 5V (step 23), the second relay (7) is turned off to turn off the engine starting electronics 8 (step 24), thereby keeping the vehicle in a state where the engine can be turned off.

이에따라, 연료공급라인상에 장착된 솔레노이드밸브(6) 및 엔진시동관련 전장품(8)들이 이그니션 스위치(1)의 조작상태에 따라 제어부(3)의 신호에 의해 개폐되거나 또는 점등되도록 제어되므로, 시동의 온(ON)/오프(OFF)시 운전자가 별도로 LPG스위치를 조작하지 않게 됨으로써 운전자의 편의성이 향상될 뿐만 아니라, 연료공급라인에 LPG연료가 남아있게 되는 것이 예방되어 동절기시 연료공급라인이 동결되는 것을 예방할 수 있게 된다.Accordingly, since the solenoid valve 6 and the engine start-related electrical appliances 8 mounted on the fuel supply line are controlled to be opened or closed by a signal of the control unit 3 according to the operation state of the ignition switch 1, starting The driver's convenience is not only improved when the driver is turned on or off, but also the driver's convenience is improved, and the LPG fuel is prevented from remaining in the fuel supply line. It can be prevented.

이상 설명한 바와 같이 본 발명에 의하면, 시동의 온(ON)/오프(OFF)시 운전자가 별도로 LPG스위치를 조작하지 않아도 이그니션 스위치의 조작에 의해 LPG연료의 공급이 차단 또는 공급되게 되므로, 운전자의 편의성이 향상되면서 연료공급라인에 LPG연료가 남아있게 되는 것이 예방됨은 물론, 이로인해 동절기시 연료공급라인이 동결되는 것을 미리 예방할 수 있게 되어 상품성이 향상되는 효과가 있다.As described above, according to the present invention, the LPG fuel supply is cut off or supplied by the operation of the ignition switch even when the driver does not operate the LPG switch separately when the driver is turned on or off. This improvement prevents the remaining of LPG fuel in the fuel supply line, as well as prevents the fuel supply line from freezing in winter, thereby improving the merchandise.

Claims (3)

이그니션 스위치(1)의 조작상태와 올터네이터 발전단자(L단자; 4)의 전압이 제어부(3)에 의해 분석되는 단계와, 상기 제어부(3)의 신호에 의해 이그니션 스위치(1)의 전원과 연결된 제1릴레이(5)가 온(ON)/오프(OFF)되면서 솔레노이드밸브(6)가 개폐되어 LPG연료가 연료공급라인으로 공급되거나 또는 공급이 차단되는 단계와, 상기 제어부(3)의 신호에 의해 배터리(2)의 전원과 연결된 제2릴레이(7)가 온(ON)/오프(OFF)되면서 엔진시동관련 전장품(8)을 온(ON)/오프(OFF)시키는 단계로 이루어진 것을 특징으로 하는 엘피지 자동차의 연료공급 제어방법.The operation state of the ignition switch 1 and the voltage of the alternator power generation terminal (L terminal) 4 are analyzed by the controller 3, and the power of the ignition switch 1 is controlled by the signal of the controller 3; The solenoid valve 6 is opened and closed while the connected first relay 5 is turned on / off, so that the LPG fuel is supplied to the fuel supply line or the supply is cut off. The second relay (7) connected to the power supply of the battery 2 by the ON (ON) / OFF (OFF), characterized in that it consists of a step of turning on (ON) / off (OFF) the electrical equipment related to the engine start 8 Fuel supply control method of the Elpji car. 제 1항에 있어서, 상기 제어부가, 상기 이그니션 스위치(1)가 악세사리단자(ACC)상태 또는 온단자(ON)상태이면 상기 제2릴레이(7)를 온(ON)시켜 엔진시동관련 전장품(8)을 점등시키고, 상기 올터네이터 발전단자(L단자; 4)의 전압이 5V 이상이면 상기 제1릴레이(5)를 온(ON)시켜 솔레노이드밸브(6)를 개방시키면서 시동온(ON) 가능상태를 유지하도록 제어하는 것을 특징으로 하는 엘피지 자동차의 연료공급 제어방법.The electronic device of claim 1, wherein the control unit turns on the second relay 7 when the ignition switch 1 is in an accessory terminal (ACC) state or an on terminal (ON) state. ), And when the voltage of the alternator power generation terminal (L terminal) 4 is 5 V or more, the first relay 5 is turned ON to open the solenoid valve 6 while the start-up ON state is possible. Fuel supply control method for an LLP automobile, characterized in that the control to maintain. 제 1항에 있어서, 상기 제어부(3)가, 상기 이그니션 스위치(1)가 온단자(ON)상태에서 악세사리단자(ACC)상태로 전환되면 상기 제1릴레이(5)를 오프(OFF)시켜 솔레노이드밸브(6)를 밀폐시키면서, 상기 올터네이터 발전단자(L단자; 4)의 전압이5V 미만이면 엔진시동관련 전장품(8)이 소등되도록 상기 제2릴레이(7)를 오프(OFF)시켜 시동오프(OFF) 가능상태를 유지하도록 제어하는 것을 특징으로 하는 엘피지 자동차의 연료공급 제어방법.The solenoid according to claim 1, wherein the control unit (3) turns off the first relay (5) when the ignition switch (1) is switched from an on terminal (ON) state to an accessory terminal (ACC) state. While closing the valve 6, if the voltage of the alternator power terminal (L terminal) 4 is less than 5V, the second relay 7 is turned off to turn off the engine to turn off the engine-related electronics 8. (OFF) A fuel supply control method for an LPI vehicle, characterized by controlling to maintain a possible state.
KR1020000069964A 2000-11-23 2000-11-23 Fuel supply control method of lpg vehicle KR20020040053A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100692725B1 (en) * 2004-03-17 2007-03-09 현대자동차주식회사 Fuel system for decreasing noise and improving durability in LPI engine vehicle

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KR970045357A (en) * 1995-12-28 1997-07-26 김태구 LPG engine start control device and method
KR970041593U (en) * 1995-12-12 1997-07-29 대우자동차주식회사 Automatic removal of residual fuel when the LPG starts off
KR200178336Y1 (en) * 1999-11-19 2000-04-15 신용진 Residul gas control unit for LPG Car
KR20000045742A (en) * 1998-12-30 2000-07-25 정주호 Fuel shutoff apparatus and method for automobile
KR100343769B1 (en) * 2000-01-13 2002-07-20 김종임 Apparatus for removing remaining gas of LPG vehicle and method for removing remaining LPG gas thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970041593U (en) * 1995-12-12 1997-07-29 대우자동차주식회사 Automatic removal of residual fuel when the LPG starts off
KR970045357A (en) * 1995-12-28 1997-07-26 김태구 LPG engine start control device and method
KR20000045742A (en) * 1998-12-30 2000-07-25 정주호 Fuel shutoff apparatus and method for automobile
KR200178336Y1 (en) * 1999-11-19 2000-04-15 신용진 Residul gas control unit for LPG Car
KR100343769B1 (en) * 2000-01-13 2002-07-20 김종임 Apparatus for removing remaining gas of LPG vehicle and method for removing remaining LPG gas thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100692725B1 (en) * 2004-03-17 2007-03-09 현대자동차주식회사 Fuel system for decreasing noise and improving durability in LPI engine vehicle

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