KR20040035101A - Fmv automotive oil drain system - Google Patents

Fmv automotive oil drain system Download PDF

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Publication number
KR20040035101A
KR20040035101A KR1020020063835A KR20020063835A KR20040035101A KR 20040035101 A KR20040035101 A KR 20040035101A KR 1020020063835 A KR1020020063835 A KR 1020020063835A KR 20020063835 A KR20020063835 A KR 20020063835A KR 20040035101 A KR20040035101 A KR 20040035101A
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South Korea
Prior art keywords
fmv
oil
electronic control
magnetic valve
oil drain
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KR1020020063835A
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Korean (ko)
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KR100502437B1 (en
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박상진
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(주)엔지브이아이
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Priority to KR10-2002-0063835A priority Critical patent/KR100502437B1/en
Publication of KR20040035101A publication Critical patent/KR20040035101A/en
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Publication of KR100502437B1 publication Critical patent/KR100502437B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0408—Sump drainage devices, e.g. valves, plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10—Indicating devices; Other safety devices
    • F01M2011/14—Indicating devices; Other safety devices for indicating the necessity to change the oil
    • F01M2011/1453—Indicating devices; Other safety devices for indicating the necessity to change the oil by considering oil quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

PURPOSE: An automatic oil drain system of FMV(Fuel Metering Valve) is provided to prevent deterioration of output, to reduce cost and to prevent pollution by automatically draining oil. CONSTITUTION: A system comprises an FMV(10); an air tank(30) storing compressed air; an electronic control unit(40) sensing idle RPM and quantity of oil; a magnetic valve(32) actuated by control signal of the electronic control unit; an actuator(34) actuated by compressed air impressed by operation of the magnetic valve; and a ball valve(36) opened and closed by operation of the actuator. The electronic control unit has an idle sensor(42) measuring idle RPM, and an oil sensor(44) measuring quantity of oil in the FMV. The electronic control unit measures idle RPM and quantity of oil to control operation of the magnetic valve. The magnetic valve opens and closes the ball valve to automatically drain unnecessary oil in the FMV. The system automatically drains oil in the FMV when an engine is at idle state to prevent deterioration of output of the engine.

Description

연료계측밸브 자동 오일 드레인 시스템{FMV AUTOMOTIVE OIL DRAIN SYSTEM}Fuel Measurement Valve Automatic Oil Drain System {FMV AUTOMOTIVE OIL DRAIN SYSTEM}

본 발명은 연료계측밸브(Fuel Metering Valve)의 오일 드레인 시스템에 관한 것으로서, 보다 상세하게는 FMV내의 오일을 별도의 오일 드레인 키트가 필요없을 뿐만 아니라 차량을 정지시키고 주기적으로 오일을 드레인할 필요없는 FMV 자동 오일 드레인 시스템에 관한 것이다.The present invention relates to an oil drain system of a fuel metering valve, and more particularly, does not require a separate oil drain kit for oil in the FMV, but also needs to stop the vehicle and periodically drain the oil. Relates to an automatic oil drain system.

일반적으로 천연가스 자동차의 경우, 가스충전소에서 가스충전시 200bar로 고압의 가스가 가스탱크내에 저장되었다가, 엔진에 공급되기 전에는 약9bar정도로 압력을 낮춰준다. 이 과정에서 압력이 낮아진 가스에서 오일이 발생하게 되고, 이 불필요한 오일은 가스와 희석되어 엔진에 공급되어 엔진출력을 저하시키고 환경오염을 유발시킨다.In the case of natural gas vehicles, high-pressure gas is stored in the gas tank at 200 bar during gas charging at the gas station, and the pressure is reduced to about 9 bar before being supplied to the engine. In this process, oil is generated from the gas under reduced pressure, and this unnecessary oil is diluted with the gas to be supplied to the engine to reduce engine power and cause environmental pollution.

종래에는 천연가스 자동차의 운행중 FMV내의 오일이 가스에 희석되어 초기 출력대비 출력이 현저히 떨어졌다. 이를 방지하기 위해, 차량을 정지시키고 오일 드레인 키트를 FMV의 오일 드레인 노브에 연결하여 주기적으로 오일을 드레인하는 방법을 사용하였다.Conventionally, the oil in the FMV is diluted with gas while the natural gas vehicle is in operation, and the output is significantly lower than the initial output. To prevent this, a method of stopping the vehicle and periodically draining the oil by connecting the oil drain kit to the oil drain knob of the FMV was used.

도 1은 천연가스 자동차의 일반적인 천연가스 흐름을 도시하고 있다. 자동차의 키를 on위치에 놓으면 고압차단밸브(2)가 열리고 연료탱크(1)내에 저장된 고압의 연료가 가스조절장치(4)로 유입된다. 상기 가스조절장치(4)에서 압력이 9bar로 다운된 고압의 가스는 열교환기(6)로 유입된다. 이후, 연료 자동온도조절기(8)를 거치며 온도가 43℃까지 상승된다. 온도가 상승한 공기는 FMV(10)로 유입되고, 상기 FMV(10)는 천연가스의 온도 및 압력을 측정한다. 상기 FMV(10)를 통과한 가스는 공기흡입구(16)를 통해 유입된 공기와 혼합되어 스로틀 시스템(12)으로 향한다. 상기 스로틀 시스템(12)은 공기량을 제어하여 엔진속도조절을 하는 역할을 하며, 본 실시예에서는 예를 들어, 플로-테크(Flo-Tech)라는 시스템이 사용되었다. 상기 스로틀 시스템(12)은 전자제어시스템(ECM)의 전기적신호에 의해 제어되며, 스로틀 시스템(12)을 통해 제어된 혼합기는 다수의 인젝터(14)를 통해 엔진에 공급된다.1 shows a general natural gas flow of a natural gas vehicle. When the key of the vehicle is placed in the on position, the high pressure shutoff valve 2 is opened and the high pressure fuel stored in the fuel tank 1 flows into the gas regulator 4. In the gas regulator 4, the high pressure gas down to 9 bar is introduced into the heat exchanger 6. Then, the temperature is raised to 43 ° C. via the fuel thermostat 8. The air whose temperature has risen is introduced into the FMV 10, and the FMV 10 measures the temperature and pressure of natural gas. The gas passing through the FMV 10 is mixed with the air introduced through the air inlet 16 and directed to the throttle system 12. The throttle system 12 serves to adjust the engine speed by controlling the amount of air, and in this embodiment, for example, a system called Flo-Tech is used. The throttle system 12 is controlled by an electrical signal of an electronic control system (ECM), and the mixer controlled through the throttle system 12 is supplied to the engine through a plurality of injectors 14.

도 2는 연료계측밸브(FMV)의 사시도로서, 상기 FMV(10)에는 연료자동온도조절기(8)를 통과한 가스가 흡입/배출되는 가스흡입구(20)와 가스배출구(22)가 형성되어 있다. 또한 상기 FMV(10)의 일측면에는 오일을 드레인하기 위해 전용의 오일 드레인장비가 연결되는 오일 드레인 노브(18)가 형성되어 있다.FIG. 2 is a perspective view of the fuel gauge valve FMV, in which the gas inlet 20 and the gas outlet 22 are formed, in which the gas passed through the fuel thermostat 8 is sucked and discharged. . In addition, one side of the FMV 10 is formed with an oil drain knob 18 to which a dedicated oil drain device is connected to drain oil.

상기와 같은 연료의 흐름에 있어서 연료의 온도와 압력을 계측하는 FMV 내의 오일을 드레인하여야 하는데, 종래의 수동 오일 드레인 방법은 오일이 가스에 희석되어 운행중 출력의 저하가 심하고, 오일을 드레인하기 위한 전용 드레인 장비를 구비해야 하며, 차량을 정지시키고 주기적으로 오일을 드레인해야 하는 문제점이 있었다. 또한, 상기 오일 드레인 장비가 고가이고 수동 드레인 정비가 어려운 문제점이 있었다.In the fuel flow as described above, the oil in the FMV for measuring the temperature and pressure of the fuel should be drained. In the conventional manual oil draining method, the oil is diluted with the gas, so that the output is severely degraded during operation, and only the oil is used to drain the oil. Must have drain equipment, there is a problem to stop the vehicle and periodically drain the oil. In addition, the oil drain equipment is expensive and there is a problem that manual drain maintenance is difficult.

본 발명은 상기와 같은 종래의 오일 드레인 방법의 문제점을 해결하기 위해 안출된 것으로, 출력저하가 없고 자동으로 오일을 드레인함으로써 비용이 절감되고 환경오염을 방지할 수 있는 FMV 자동 오일 드레인 시스템을 제공하는 것을 그 목적으로 하고 있다.The present invention has been made to solve the problems of the conventional oil drain method as described above, there is no output degradation and automatically drain the oil to reduce the cost and provide an FMV automatic oil drain system that can prevent environmental pollution The purpose is to.

도 1은 천연가스 자동차의 일반적인 천연가스 흐름도.1 is a general natural gas flow diagram of a natural gas vehicle.

도 2는 연료계측밸브의 사시도.2 is a perspective view of a fuel measurement valve;

도 3은 본 발명에 따른 연료계측밸브 자동 오일 드레인 시스템의 구성도.3 is a block diagram of a fuel gauge automatic oil drain system according to the present invention.

도 4는 본 발명에 따른 연료계측밸브 자동 오일 드레인 시스템의 플로우차트.4 is a flow chart of the fuel gauge automatic oil drain system according to the present invention.

※도면의 주요부분에 대한 부호의 설명※ Explanation of symbols for main parts of drawing

1 : 연료탱크2 : 고압차단밸브4 : 가스조절장치1: fuel tank 2: high-pressure shut-off valve 4: gas regulator

6 : 열교환기8 : 연료 자동온도조절기10 : 연료계측밸브6: heat exchanger 8: fuel thermostat 10: fuel measurement valve

12 : 스로틀 시스템14 : 인젝터16 : 공기흡입구12 Throttle System 14 Injector 16 Air Intake

18 : 오일 드레인 노브20 : 가스흡입구22 : 가스배출구18 oil drain knob 20 gas inlet 22 gas outlet

30 : 에어탱크32 : 마그네틱밸브34 : 액츄에이터30: air tank 32: magnetic valve 34: actuator

36 : 볼 밸브40 : 전자제어장치42 : 아이들센서36: ball valve 40: electronic control device 42: idle sensor

44 : 오일센서44: oil sensor

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

도 3은 본 발명에 따른 연료계측밸브 자동 오일 드레인 시스템의 구성을 도시하고 있다. 본 발명에 따른 연료계측밸브 자동 오일 드레인 시스템은 FMV(10)와, 압축공기가 담긴 에어탱크(30)와, 아이들 RPM과 OIL량을 감지하는 전자제어장치(40)와, 상기 전자제어장치(40)의 제어신호에 의해 작동되는 마그네틱밸브(32)와, 상기 마그네틱밸브(32)의 작동으로 인가된 압축공기에 의해 작동되는 액츄에이터(34)와, 상기 액츄에이터(34)의 작동으로 개폐되는 볼 밸브(36)로 이루어져 있다.3 shows the configuration of the fuel gauge automatic oil drain system according to the present invention. Fuel measuring valve automatic oil drain system according to the present invention is the FMV (10), the air tank (30) containing the compressed air, the electronic controller 40 for detecting the idle RPM and OIL amount, and the electronic control device ( The magnetic valve 32 actuated by the control signal of 40, the actuator 34 actuated by the compressed air applied by the actuation of the magnetic valve 32, and the ball opened and closed by the actuation of the actuator 34 It consists of a valve 36.

상기 전자제어장치(40)에는 아이들 RPM을 측정하는 아이들 센서(42)와 FMV내의 오일량을 측정하는 오일센서(44)를 가지고 있다. 전자제어장치(40)는 아이들RPM과 오일양을 측정하여 상기 마그네틱밸브(32)의 작동을 제어하게 되고, 상기 마그네틱밸브(32)의 작동으로 인해 상기 볼 밸브(36)가 개폐되어 FMV(10) 내의 불필요한 오일이 자동으로 드레인 하게 된다.The electronic controller 40 has an idle sensor 42 for measuring idle RPM and an oil sensor 44 for measuring the amount of oil in FMV. The electronic control device 40 controls the operation of the magnetic valve 32 by measuring the idle RPM and the oil amount, and the ball valve 36 is opened and closed due to the operation of the magnetic valve 32 to open the FMV 10. Unnecessary oil inside will drain automatically.

이하, FMV(10) 내의 오일을 자동으로 드레인하는 방법을 도 4에 도시된 플로우차트를 참조하여 설명한다.Hereinafter, a method of automatically draining oil in the FMV 10 will be described with reference to the flowchart shown in FIG. 4.

본 발명에 따른 FMV 자동 오일 드레인 시스템은 전자제어장치(40)의 오일센서(44)에서 FMV(10) 내의 오일량을 측정하는 단계(S10)와, 전자제어장치(40)의 아이들센서(42)에서 엔진이 아이들 상태인지를 판단하는 단계(S20)와, 전자제어장치(40)의 제어에 의해 마그네틱밸브(32)를 작동하는 단계(S30)로 이루어져 있다.In the FMV automatic oil drain system according to the present invention, the oil sensor 44 of the electronic controller 40 measures the amount of oil in the FMV 10 (S10), and the idle sensor 42 of the electronic controller 40. ) And determining whether the engine is in the idle state (S20), and operating the magnetic valve 32 by the control of the electronic controller 40 (S30).

단계(S10)에서 FMV(10) 내의 오일량이 100cc보다 많은 경우, 단계(S20)으로 넘어가 엔진이 아이들 상태인지를 판단한다. 이때, FMV(10) 내의 오일량이 100cc 이상이고 엔진이 아이들상태인 경우, 상기 전자제어장치(40)는 마그네틱밸브(32)를 5초간 작동시킨다. 상기 마그네틱밸브(32)의 작동으로 볼 밸브(36)가 개방되어 FMV(10) 내의 오일이 배출되게 된다.If the amount of oil in the FMV 10 is greater than 100 cc in step S10, the flow advances to step S20 to determine whether the engine is in an idle state. At this time, when the amount of oil in the FMV 10 is 100cc or more and the engine is in the idle state, the electronic control device 40 operates the magnetic valve 32 for 5 seconds. The ball valve 36 is opened by the operation of the magnetic valve 32 so that the oil in the FMV 10 is discharged.

이때, 엔진이 아이들 상태가 아닌 경우에는 가스가 오일과 같이 배출될 수 있으므로, 전자제어장치(40)는 마그네틱밸브(32)를 작동시키지 않는다. 그리고, FMV(10) 내의 오일량이 100cc 이하인 경우에도 전자제어장치(40)는 마그네틱밸브(32)를 작동시키지 않는다. 이 경우, 볼 밸브(36)가 폐쇄되어 FMV(10) 내의 오일이 드레인되지 않는다.At this time, when the engine is not in the idle state, since the gas may be discharged together with the oil, the electronic controller 40 does not operate the magnetic valve 32. Further, even when the oil amount in the FMV 10 is 100 cc or less, the electronic controller 40 does not operate the magnetic valve 32. In this case, the ball valve 36 is closed so that oil in the FMV 10 is not drained.

상기와 같은 본 발명에 따른 FMV 자동 오일 드레인 시스템은 엔진이 아이들상태일 때 자동으로 FMV 내의 오일을 드레인 시킴으로써, 엔진의 출력저하를 방지할 수 있고, 고가의 드레인 장비를 필요로 하지 않음으로 비용도 절약할 수 있다. 또한, 수동 드레인 정비의 어려움을 해결하여 정비도 용이하고, 오일이 가스에 희석되어 연소하지 않음으로써 환경오염의 문제도 줄일 수 있다.The FMV automatic oil drain system according to the present invention as described above automatically drains the oil in the FMV when the engine is in the idle state, thereby preventing the engine output from being lowered and requiring no expensive drain equipment. You can save. In addition, it is easy to maintain by solving the difficulty of manual drain maintenance, it is possible to reduce the problem of environmental pollution by diluting the oil in the gas does not burn.

Claims (6)

FMV 오일 드레인 시스템에 있어서,In the FMV oil drain system, FMV(10);FMV 10; 압축공기가 담긴 에어탱크(30); 및An air tank 30 containing compressed air; And 아이들 RPM과 OIL량을 감지하는 전자제어장치(40)를 포함하고 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.FMV automatic oil drain system, characterized in that it comprises an electronic control device for sensing the idle RPM and OIL amount (40). 제 1 항에 있어서,The method of claim 1, 상기 전자제어장치(40)의 제어신호에 의해 작동되는 마그네틱밸브(32)를 더 포함하고 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.FMV automatic oil drain system, characterized in that it further comprises a magnetic valve (32) operated by the control signal of the electronic control device (40). 제 2 항에 있어서,The method of claim 2, 상기 마그네틱밸브(32)의 작동으로 인가된 압축공기에 의해 작동되는 액츄에이터(34)를 더 포함하고 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.FMV automatic oil drain system, characterized in that it further comprises an actuator (34) operated by the compressed air applied by the operation of the magnetic valve (32). 제 3 항에 있어서,The method of claim 3, wherein 상기 액츄에이터(34)의 작동으로 개폐되는 볼 밸브(36)를 더 포함하고 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.FMV automatic oil drain system, characterized in that it further comprises a ball valve (36) opened and closed by the operation of the actuator (34). 제 1 항에 있어서,The method of claim 1, 상기 전자제어장치(40)는 아이들 RPM을 측정하는 아이들 센서(42)와 FMV내의 오일량을 측정하는 오일센서(44)를 포함하고 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.The electronic control device (40) is FMV automatic oil drain system, characterized in that it comprises an idle sensor (42) for measuring the idle RPM and the oil sensor (44) for measuring the amount of oil in the FMV. FMV 오일 드레인 시스템에 있어서,In the FMV oil drain system, 전자제어장치(40)의 오일센서(44)에서 FMV(10) 내의 오일량을 측정하는 단계(S10);Measuring the amount of oil in the FMV 10 by the oil sensor 44 of the electronic controller 40 (S10); 전자제어장치(40)의 아이들센서(42)에서 엔진이 아이들 상태인지를 판단하는 단계(S20); 및Determining whether the engine is in an idle state by the idle sensor 42 of the electronic controller 40 (S20); And 전자제어장치(40)의 제어에 의해 마그네틱밸브(32)를 작동하는 단계(S30)로 이루어져 있는 것을 특징으로 하는 FMV 자동 오일 드레인 시스템.FMV automatic oil drain system, characterized in that consisting of the step (S30) of operating the magnetic valve 32 by the control of the electronic control device (40).
KR10-2002-0063835A 2002-10-18 2002-10-18 AUTOMATIC OIL DRAIN SYSTEM FOR FMV(Fuel Metering Valve) KR100502437B1 (en)

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