KR20020037465A - Fuel Heating Equipment of Diesel Engine - Google Patents

Fuel Heating Equipment of Diesel Engine Download PDF

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Publication number
KR20020037465A
KR20020037465A KR1020000067377A KR20000067377A KR20020037465A KR 20020037465 A KR20020037465 A KR 20020037465A KR 1020000067377 A KR1020000067377 A KR 1020000067377A KR 20000067377 A KR20000067377 A KR 20000067377A KR 20020037465 A KR20020037465 A KR 20020037465A
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KR
South Korea
Prior art keywords
fuel
temperature
filter
heating
diesel engine
Prior art date
Application number
KR1020000067377A
Other languages
Korean (ko)
Inventor
김주호
Original Assignee
류정열
기아자동차주식회사
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Priority to KR1020000067377A priority Critical patent/KR20020037465A/en
Publication of KR20020037465A publication Critical patent/KR20020037465A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125Fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • H05B1/0236Industrial applications for vehicles
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • H05B1/0244Heating of fluids
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03Fuel tanks
    • B60K2015/03328Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03427Arrangements or special measures related to fuel tanks or fuel handling for heating fuel, e.g. to avoiding freezing

Abstract

PURPOSE: A fuel heating device of a diesel engine is provided to keep fuel being smoothly supplied by heating fuel in a cold season when the fuel is freezing so that the startup is achieved smoothly. CONSTITUTION: A fuel heating device of a diesel engine comprises temperature sensors installed inside a fuel filter(10) and a fuel tank to detect a freezing temperature of the diesel oil in a cold season, electric heat units installed at the fuel filter and the fuel tank and getting power from a battery(18), and a control unit(28) connected with a cold heating terminal(30), temperature sensors, and electric heat units to supply power to electric heat units by temperature sensors at startup of an engine below the temperature of freezing of the diesel oil.

Description

디젤엔진의 연료가열장치{Fuel Heating Equipment of Diesel Engine}Fuel Heating Equipment of Diesel Engine

본 발명은 디젤엔진의 연료가열장치에 관한 것으로, 더욱 상세하게는 디젤유의 결빙이 발생되는 혹한기에 연료필터와 연료탱크를 가열하여 연료의 원할한 공급을 유지케 하는 디젤엔진의 연료가열장치에 관한 것이다.The present invention relates to a fuel heating device for a diesel engine, and more particularly, to a fuel heating device for a diesel engine for maintaining a smooth supply of fuel by heating a fuel filter and a fuel tank in a cold season in which diesel oil freezing occurs. will be.

일반적으로 디젤엔진에서는 흡입한 공기의 압축열로 연료가 착화연소되므로 가솔린 엔진의 점화장치에 상당하는 것은 필요없지만, 압축착화기관의 특성상 한랭시에는 압축착화온도의 보조를 위해 흡입공기를 따뜻하게 하는 예열장치가 구비되어 있다.In general, in diesel engines, fuel is ignited and burned by the compressed heat of inhaled air, so it is not necessary to correspond to the ignition device of a gasoline engine. The device is provided.

이러한 예열장치는 글로우 플러그를 이용한 방식과 흡기히팅 방식으로 구분되며, 글로우 플러그 방식은 전기 저항열로 적열되는 글로우 플러그를 연소실 내에 설치하여 연소실을 직접가열한 것으로 예연소실식이나 와류실식의 디젤엔진에 채용되고 있다.The preheating device is divided into a glow plug type and an intake heating type, and the glow plug type is a type of glow plug that is heated by electric resistance heat and is directly heated in the combustion chamber. It is adopted.

한편, 흡기히팅 방식은 연료장치에서 연료의 일부를 유입시키고 이것을 전기 히터에 의해 착화연소시켜, 이때 발생한 열에 의해 흡기 매니폴드내의 공기를 가열하도록 되어 있으며 직접분사식 디젤엔진에 채용되고 있다.On the other hand, the intake heating system introduces a part of fuel from the fuel device and ignites and burns it with an electric heater, and heats the air in the intake manifold by the heat generated at this time, and is employed in a direct injection diesel engine.

이러한 예열장치의 구동은 배터리의 전원을 그 동력원으로 하고 있으며, 이를 위한 디젤엔진차량의 키-스위치 부에는 가솔린 엔진과는 달리 냉간예열단자가 별도로 구비되어 있다.The preheating device is driven by a battery power source. The key-switch part of the diesel engine vehicle is provided with a cold preheating terminal separately from the gasoline engine.

그러나, 이러한 예열장치만으로는 혹한기에 엔진주행을 충분히 보조할 수 없었다는 문제점이 있었다.However, there was a problem that such a preheating device alone could not fully support engine driving in cold weather.

즉, 혹한기에는 디젤유(경유)에서 파라핀 왁스성분 등이 석출되는 결빙현상이 일어나게 되어 연료 유동성이 상온과 대비할 때 크게 저하된다.That is, during the cold season, the phenomenon of freezing of paraffin wax components, etc. in diesel oil (diesel) occurs, so that the fuel flowability is greatly reduced when compared with room temperature.

그 결과로써 피드펌프는 충분한 연료공급을 수행치 못하게 되어 시동이 잘 걸리지 않게 될 뿐만아니라, 석출물이 연료필터에 여과되어 연료필터의 막힘현상이 발생되므로, 이 경우에 있어서도 상기 피드펌프가 연료를 충분히 송압하지 못하게 되는 것이다.As a result, the feed pump may not be able to supply enough fuel and may not start well, and the precipitate may be filtered through the fuel filter, causing clogging of the fuel filter. You will not be able to repress.

이를 해소하기 위해서는 연료공급시스템에 별도의 가열장치를 구비하여 디젤유의 결빙현상을 방지해야 할 것이 요구된다.In order to solve this problem, it is required to provide a separate heating device in the fuel supply system to prevent freezing of diesel oil.

물론 종래 기술에 있어 혹한기 때에 연료를 가열시키는 연료히팅장치(명칭;배기열을 이용한 연료 히팅장치, 출원번호 10-1996-063399)가 안출되어 있다.Of course, in the prior art, a fuel heating device (name: fuel heating device using exhaust heat, application number 10-1996-063399) for heating the fuel in cold weather has been devised.

이것은 예시도면 도 1 에서와 같이, 연료의 온도가 조금 낮은 경우에는 밸브(1)부를 작동, 1번 파이프(2)를 차단하여 연료를 2번 파이프(3)를 통하여 배기관이 권선된 1차 가열대(4)에 통과시켜 배기열에 의해 연료의 온도를 상승시킨 후, 밸브부(5)를 작동 3번 파이프(6)를 차단하여 2번 파이프(3)와 1번 파이프(2)로 공급 인젝션펌프(7)로 연료가 인입되도록 하고 있다.As shown in FIG. 1, when the temperature of the fuel is a little low, the valve 1 is operated, and the pipe 1 is cut off so that the exhaust pipe is wound around the pipe 2 through the primary pipe. After passing through (4) to raise the temperature of the fuel by the exhaust heat, the valve part 5 is shut off by the operation pipe 3 and the supply injection pump to the pipe 2 and the pipe 2, respectively. In (7), fuel is drawn in.

또한, 연료의 온도가 아주 낮은 경우에는 밸브부(1)를 작동 1번 파이프(2)를차단하여 연료를 2번 파이프(3)로 공급하고 배기관에 권선된 1차 가열대(4)에 통과시킨 후, 다시 밸브부(5)를 작동시켜 2차 가열대(8)에 연료를 통과시켜 연료의 온도를 상승시킨 후 인젝션펌프(7)로 공급하도록 한 것이다.In addition, when the temperature of the fuel is very low, the valve unit 1 is shut off by the first pipe 2 to supply the fuel to the second pipe 3 and passed through the primary heating table 4 wound on the exhaust pipe. Afterwards, the valve unit 5 is operated again to allow the fuel to pass through the secondary heating table 8 to raise the temperature of the fuel and then supply the fuel to the injection pump 7.

따라서, 상기 종래의 연료가열장치에서는 외기의 온도가 낮은 경우에도 연료를 원하는 온도로 상승시켜 기화기에 공급하므로, 연료의 기화가 향상된 상태로 상온에서의 공기와 연료의 적정혼합비가 유도됨으로써 연소효율이 향상될 수 있는 것이다.Therefore, in the conventional fuel heating device, even when the temperature of the outside air is low, the fuel is raised to a desired temperature and supplied to the carburetor, so that the combustion efficiency is improved by inducing a proper mixing ratio of air and fuel at room temperature while improving the vaporization of the fuel. It can be improved.

그러나, 이것은 시동이 수행된 후에 연소효율을 증가시키기 위한 가열장치여서 혹한기 시동을 위한 가열장치에 채택되기는 곤란하다는 문제점이 있다.However, this is a heating device for increasing the combustion efficiency after the startup is performed, so that it is difficult to be adopted in the heating device for cold start.

즉, 혹한기 디젤엔진에 있어 엔진의 시동을 수행하기 위해서는 디젤유의 결빙을 해제하기 위해 시동전에 연료공급시스템이 가열되어져야 한다.That is, in cold weather diesel engines, in order to start the engine, the fuel supply system must be heated before starting to release the freezing of the diesel oil.

그런데, 상기된 종래의 것은 시동후 연료공급시스템을 가열시키는 것이며, 이것은 연료를 가열하여 이를 상온으로 유도시킴으로써 한랭시 연료와 흡기의 혼합비를 상온의 혼합비로 유도시키는 것으로, 혹한기의 디젤엔진시동을 위한 연료가열장치가 아닌 것이다.However, the above-described conventional method is to heat the fuel supply system after starting, which induces the mixing ratio of cold fuel and intake to the mixing ratio of room temperature by heating the fuel and inducing it to room temperature, and for the cold engine diesel engine startup. It is not a fuel heater.

따라서, 상기된 종래의 연료히팅장치는 연소효율을 향상시키기 위해 가솔린 엔진에 채용되어진 것이며, 시동후 배기열로 수행되는 종래의 연료히팅장치로는 혹한기에 시동을 위한 디젤엔진의 연료가열장치에 적용되기 곤란한 것이다.Therefore, the above-described conventional fuel heating device is employed in a gasoline engine to improve combustion efficiency, and the conventional fuel heating device performed by exhaust heat after starting is applied to a fuel heating device of a diesel engine for cold start. It is difficult.

이에 본 발명은 상기 문제점을 해소하기 위해 안출된 것으로, 혹한기에 시동전 연료를 가열시켜 원활한 시동이 이루어지게 하는 디젤엔진의 연료가열장치를 제공함에 그 목적이 있는 것이다.Accordingly, the present invention has been made to solve the above problems, it is an object of the present invention to provide a fuel heating device of a diesel engine to enable a smooth start by heating the fuel before the cold start.

이를 위한 본 발명은 연료필터와 연료탱크에 전열수단을 설치하고 이 전열수단은 온도센서에 의한 컨트롤유니트로부터 전원의 공급이 제어되도록 한 것으로, 연료필터와 연료탱크에 디젤유의 결빙온도가 검출되도록 온도센서가 설치됨과 더불어, 컨트롤유니트의 입력단에 상기 온도센서가 연결되고, 컨트롤유니트의 출력단에는 배터리를 전원으로 하는 전열선인 가열수단이 연결되어져, 상기 온도센서의 신호에 의해 연료필터와 연료탱크가 가열되도록 한 것이다.The present invention for this purpose is to install the heating means in the fuel filter and fuel tank and the heating means is to control the supply of power from the control unit by the temperature sensor, the temperature so that the freezing temperature of diesel oil in the fuel filter and fuel tank is detected In addition to the sensor, the temperature sensor is connected to an input terminal of the control unit, and a heating means, which is a heating wire for powering a battery, is connected to the output terminal of the control unit, and the fuel filter and the fuel tank are heated by the signal of the temperature sensor. It was made possible.

따라서, 본 발명에서는 디젤유의 결빙이 발생되는 혹한기에 상기 부위를 가열시켜 연료의 원할한 공급을 유지시킴으로써, 예열장치만으로 디젤엔진을 시동시킬 수 없는 혹한기에도 디젤엔진의 시동이 원할해지는 효과가 있는 것이며, 궁극적으로는 차량의 상품성이 향상되는 것이다.Therefore, in the present invention, by heating the part in a cold weather during which the freezing of diesel oil is generated to maintain a smooth supply of fuel, even if the diesel engine can not be started only by the preheating device, the diesel engine can be started smoothly. Ultimately, the merchandise of the vehicle is improved.

도 1 은 종래 연료가열장치를 나타낸 설명도,1 is an explanatory diagram showing a conventional fuel heating device,

도 2 는 본 발명에 따른 디젤엔진의 연료가열장치를 나타낸 블럭도,2 is a block diagram showing a fuel heating device of a diesel engine according to the present invention;

도 3 a 는 본 발명에 따른 연료가열장치 중 연료필터 측 가열장치를 나타낸 세부 블럭도,Figure 3a is a detailed block diagram showing the fuel filter side heating device of the fuel heating device according to the present invention,

도 3 b 는 본 발명에 따른 연료가열장치 중 연료탱크 측 가열장치를 나타낸 세부 블럭도,Figure 3b is a detailed block diagram showing the fuel tank side heating apparatus of the fuel heating device according to the present invention,

도 4 는 본 발명에 따른 연료가열장치 중 연료필터에 설치된 온도센서 및 전열수단을 나타낸 단면설명도,4 is an explanatory cross-sectional view showing a temperature sensor and a heating means installed in a fuel filter of a fuel heating device according to the present invention;

도 5 은 본 발명에 따른 연료가열장치 중 연료탱크에 설치된 온도센서 및 전열수단을 나타낸 단면설명도이다.5 is a cross-sectional view illustrating a temperature sensor and a heating means installed in a fuel tank of a fuel heating device according to the present invention.

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

10 - 연료필터,12 - 연료탱크,10-fuel filter, 12-fuel tank,

14,16 - 온도센서,18 - 배터리,14,16-temperature sensor, 18-battery,

20,22 - 전열수단,24 - 전원공급라인,20,22-Heating means, 24-Power supply line,

26 - 릴레이스위치,28 - 컨트롤유니트,26-relay switch, 28-control unit,

30 - 냉간예열단자,32 - 필터엘리먼트,30-cold preheating terminal, 32-filter element,

34,36 - 전열선,38 - 하우징,34,36-heating element, 38-housing,

40 - 배출파이프,42 - 방열판,40-exhaust pipe, 42-heat sink,

이하 첨부된 예시도면과 함께 본 발명을 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

예시도면 도 2 는 본 발명에 따른 디젤엔진의 연료가열장치를 나타낸 블럭도이고, 예시도면 도 3 은 각부의 세부 블럭도로서, 본 발명은 혹한기 디젤유의 결빙온도의 시작점이 검출되게 연료필터(10)와 연료탱크(12) 내측에 온도센서(14)(16)가 설치되고, 상기 연료필터(14)와 연료탱크(16)에는 배터리(18)를 전원으로 하는 전열수단(20)(22)이 설치된다.Figure 2 is a block diagram showing a fuel heating device of a diesel engine according to the present invention, Figure 3 is a detailed block diagram of each part, the present invention is a fuel filter 10 to detect the starting point of the freezing temperature of the cold diesel oil And the temperature sensors 14 and 16 are installed inside the fuel tank 12, and the fuel filter 14 and the fuel tank 16 are heat-transmitting means 20 and 22 for powering the battery 18. This is installed.

이와 더불어, 상기 배터리(18)와 전열수단(20)(22)과의 전원공급라인(24)에는 릴레이스위치(26)가 형성되며, 상기 온도센서(14)(16)에 의해 디젤유의 결빙온도시 상기 전열수단(20)(22)으로 전원이 공급되게 상기 릴레이스위치(26)를 포함하는 컨트롤유니트(28)가 냉간예열단자(30)에 연결된 디젤엔진의 연료가열장치이다.In addition, a relay switch 26 is formed in the power supply line 24 between the battery 18 and the heat transfer means 20 and 22, and the freezing temperature of diesel oil is formed by the temperature sensors 14 and 16. The control unit 28 including the relay switch 26 is a fuel heating device of a diesel engine connected to the cold preheating terminal 30 so that power is supplied to the heat transfer means 20, 22.

여기서, 냉간예열단자(30)는 기존의 글로우플러그나 흡기히팅시스템을 가동하기 위한 단자이다.Here, the cold preheating terminal 30 is a terminal for operating a conventional glow plug or intake heating system.

즉, 본 발명은 기존의 예열장치인 글로우플러그나 흡기히팅시스템과 연동되는 것이다.That is, the present invention is interlocked with a glow plug or an intake heating system that is a conventional preheating device.

그러나, 기존의 예열장치와 항상 같이 수행되는 것은 아니어서 냉간시, 특히 혹한기시 디젤유의 결빙현상이 발생될 때만 가동된다.However, it is not always performed with the existing preheating device, so it is operated only when cold, especially cold weather, freezing of diesel oil occurs.

이를 위한 본 발명은 온도센서(14)(16)의 출력부가 릴레이스위치(26)를 포함하는 컨트롤유니트(28)에 앤드(AND)로직으로 연결된 것이며, 설정온도에 따른 온도센서(14)(16)의 신호가 송출되지 않으면 릴레이스위치(26)가 접점되지 않는다.The present invention for this purpose is that the output of the temperature sensor 14, 16 is connected to the control unit 28 including the relay switch 26 (AND) logic, the temperature sensor 14 (16) according to the set temperature ) Is not sent, the relay switch 26 is not in contact.

즉, 사용자의 시동키 제어에 의해 냉간예열단자(30)가 접점되어 예열장치가 가동된다 하더라도 디젤유의 온도가 결빙온도에 있지 않으면 본 발명의 연료가열장치는 가동되지 않게 되는 것이다.That is, even if the cold preheating terminal 30 is contacted by the user's start key control and the preheating device is operated, the fuel heating device of the present invention will not operate unless the temperature of the diesel oil is at the freezing temperature.

반면, 디젤유의 온도가 결빙온도 이하로 하락되면 온도센서(14)(16)의 신호에 의해 릴레이스위치(26)가 접점되고, 이에 의해 전열수단(20)(22)으로 전원이 공급되어 디젤유의 결빙을 방지하게 되는 것이다.On the other hand, when the temperature of the diesel oil falls below the freezing temperature, the relay switch 26 is contacted by the signals of the temperature sensors 14 and 16, whereby power is supplied to the heat transfer means 20 and 22 to supply the diesel oil. It will prevent freezing.

상기 온도센서(14)(16) 및 전열수단(20)(22)은 연료탱크(12)와 연료필터(10)에 각각 설치되어지며, 이는 전술된 바와 같이 디젤유가 결빙되면 그 유동성이 하락되는데, 연료의 저장공간인 연료탱크(12)에 설치시켜 연료 대부분의 결빙을 방지시킴이 바람직하기 때문이며, 또한 연료공급 초기시 연료필터(10)의 막힘에 의한 피드펌프에서의 연료송압 불량을 방지하기 위하여 연료필터(10)에도 설치되어짐도 우선적인 것이다.The temperature sensors 14 and 16 and the heat transfer means 20 and 22 are installed in the fuel tank 12 and the fuel filter 10, respectively. This is because it is preferable to prevent the freezing of most of the fuel by installing it in the fuel tank 12, which is a storage space of the fuel, and also to prevent a poor fuel transfer pressure in the feed pump due to the blockage of the fuel filter 10 at the initial fuel supply. For this reason, the fuel filter 10 is also provided with priority.

여기서, 릴레이스위치(26)를 접점시키는 온도센서(14)(16)의 신호는 작동과 해제의 범위로 설정되어지는 것은 당연한 것이서, 혹한기에 따른 최소치를 시작점으로 설정범위의 최대치를 초과할때까지 가열이 수행되며, 최소치는 디젤유의 빙결이 시작되는 혹한 온도에 근접될 것이고 최대치는 상온에 근접될 것이다.Here, it is a matter of course that the signal of the temperature sensors 14 and 16 for contacting the relay switch 26 is set in a range of actuation and deactivation, when the minimum value according to the cold weather exceeds the maximum value of the setting range as a starting point. Heating is carried out until the minimum value will be close to the cold temperature at which diesel oil starts to freeze and the maximum value will be close to room temperature.

한편, 본 발명에 따른 가열장치는 도 3 에서와 같이 그 세부 블럭도에서 독립되어 있지만 이것은 각 부의 세부사항을 도시하는 것이서 독립된 가열장치에 국한 되는 것이 아니며, 두개의 가열장치가 서로 별개의 발명을 나타내는 것은 아니다.On the other hand, the heating device according to the present invention is independent in its detailed block diagram as shown in FIG. 3, but this is to show the details of each part and is not limited to the independent heating device, and the two heating devices are different from each other. It does not indicate.

즉, 독립되어 있다는 것은 냉간예열단자(30)에서의 연결은 병렬적인 것이고 그 병렬적인 연결이 도 2 에 도시된 컨트롤유니트(28)에 포함되는 것어서 온도센서(14)(16)의 신호에 의해 가열작용이 독립적으로 수행된 다는 것을 의미하고, 두개의 가열장치가 서로 다른 별개의 발명을 나타내는 것은 아니다.In other words, the independent connection means that the connection in the cold preheating terminal 30 is parallel and the parallel connection is included in the control unit 28 shown in FIG. 2 to the signals of the temperature sensors 14 and 16. Means that the heating is carried out independently, and the two heaters do not represent different distinct inventions.

또한, 연료필터(10)와 연료탱크(12) 각 부의 온도센서(14)(16)에 의한 가열이 독립적으로 수행되어지는 것 뿐만아니라, 온도센서(14)(16)의 출력라인과 배터리(18)로부터의 전원공급라인을 병렬화하고 릴레이스위치(16)가 공용된다면 온도센서(14)(16) 중 어느 하나의 신호에 의해 연료필터(10)와 연료탱크(12) 모두 가열이수행되도록 함도 가능하다.In addition, the heating by the temperature sensors 14 and 16 of each part of the fuel filter 10 and the fuel tank 12 is independently performed, as well as the output line of the temperature sensors 14 and 16 and the battery ( Paralleling the power supply line from 18 and if the relay switch 16 is shared, the fuel filter 10 and the fuel tank 12 are both heated by a signal of one of the temperature sensors 14 and 16. It is also possible.

이는 상기 온도센서(14)(16)에 의해 연료필터(10)나 연료탱크(12) 어느 한 부위의 온도가 하락되어 있음이 감지되하면, 이 하나의 신호로 부터 주위온도가 혹한기임을 감지하여 두 부위의 전열수단을 모두 가동시킴도 바람직하기 때문이다.When the temperature sensor 14, 16 detects that the temperature of any one of the fuel filter 10 or the fuel tank 12 is reduced, it detects that the ambient temperature is cold from this one signal. This is because it is also preferable to operate both heat transfer means.

상기 전열수단(20)(22)은 배터리(18)를 전원으로 하는 전기저항열 발생수단인 전열선이 그 주요부로서, 예시도면 도 3 에 연료필터 및 연료탱크에 내설된 전열수단이 도시되어 있다.The heat transfer means 20, 22 is a heat transfer wire that is an electric resistance heat generating means using the battery 18 as a main portion thereof, and the heat transfer means built in the fuel filter and the fuel tank is illustrated in FIG.

예시도면 도 3 a 에서와 같이 연료필터(10)에 설치된 전열수단(20)은 연료필터(10)의 필터엘리먼트(32) 연료유입부에 근접되게 설치되는 온도센서(14)의 외측으로 필터엘리먼트(32)의 연료유입부가 둘러싸여지게 전열선(34)이 설치된 것을 특징으로 한다.Exemplary drawing As shown in Figure 3a, the heat transfer means 20 installed in the fuel filter 10 is the filter element outside the filter element 32 is installed near the fuel inlet of the filter element 32 of the fuel filter 10 outside the filter element The heating wire 34 is provided so that the fuel inflow part of 32 may be enclosed.

일반적으로 디젤엔진의 연료필터(10)는 피드펌프와 인젝션펌프와의 연료공급라인에 설치된 것으로, 연료속의 불순물을 제거하기 위한 필터엘리먼트(32)가 그 주요부분이다.In general, the fuel filter 10 of a diesel engine is installed in a fuel supply line between a feed pump and an injection pump, and a filter element 32 for removing impurities in a fuel is a main part thereof.

이러한 필터엘리먼트(32)의 장착과 여과라인을 구비하기 위한 연료필터(10)는 통형의 하우징(38)과 배출파이프(40)가 형성되고, 배출파이프(40)의 유입구에 필터엘리먼트(32)가 둘러싸여지게 장착되어져 있다.The fuel filter 10 for mounting the filter element 32 and having the filtration line is formed with a cylindrical housing 38 and a discharge pipe 40, and the filter element 32 is provided at the inlet of the discharge pipe 40. Is enclosed and mounted.

충분한 여과면적의 확보를 위해 필터엘리먼트(32)의 여과지는 굴곡지게 포개어져 있으며, 도시된 필터엘리먼트(32)의 연료유입부는 여과지를 통과하기 위한 필터엘리먼트(32)의 측면부로서, 필터엘리먼트(32)의 연료유입부는 하우징(38)과 필터엘리먼트(32) 측부 사이의 공간인 것이다.The filter paper of the filter element 32 is bent and folded to secure a sufficient filter area, and the fuel inlet of the illustrated filter element 32 is a side of the filter element 32 for passing through the filter paper, and the filter element 32 ) Is the space between the housing 38 and the filter element 32 side.

따라서, 본 발명은 이러한 필터엘리먼트(32)의 연료유입부에 온도센서(14)가 설치되어져 디젤유의 결빙온도 이하의 온도를 감지하여 이물질 석출에 따른 필터엘리먼트(32)의 막힘을 감시하도록 한 것이다.Therefore, in the present invention, the temperature sensor 14 is installed at the fuel inlet of the filter element 32 to detect the temperature below the freezing temperature of diesel oil to monitor the clogging of the filter element 32 due to the deposition of foreign matter. .

또한, 그 가열에 있어서도 상기 온도센서(14)의 외측과 하우징(38) 내측사이에 전열선(34)이 둘러싸여져 필터엘리먼트(32)의 연료유입부 대부분이 가열되도록 함으로써, 디젤유의 결빙에 따른 필터엘리먼트(32)의 막힘을 최대한 신속하게 해제하도록 한 것이다.In addition, the heating wire 34 is surrounded between the outer side of the temperature sensor 14 and the inner side of the housing 38 so that most of the fuel inlet of the filter element 32 is heated. The blockage of the element 32 is to be released as quickly as possible.

한편, 예시도면 도 3 b 에서와 같이 연료탱크(12)에 설치된 전열수단(22)은 연료탱크(12) 의 출구측에 근접되는 위치에 방열판(42)이 설치되고 이 방열판(42)에 전열선(36)이 설치 되어진 것을 특징으로 한다.On the other hand, the heat transfer means 22 installed in the fuel tank 12, as shown in Figure 3b of the exemplary drawing, the heat dissipation plate 42 is installed at a position close to the outlet side of the fuel tank 12 and the heating wire 42 in the heat transfer plate 42 It is characterized in that 36 is installed.

연료탱크(12)에 설치되는 전열수단(22)은 상기된 연료필터와는 달리 방열판(42)과 함께 전열선(36)이 설치됨이 바람직하다.Unlike the fuel filter described above, the heat transfer means 22 installed in the fuel tank 12 is preferably provided with a heat transfer line 36 together with the heat sink 42.

이는 열전도를 급격하게 진행시키기 위해 열원과 연료의 접촉면이 충분히 확보될 것이 요구되는데 연료탱크(12) 자체가 대용량이므로, 이러한 대용량의 연료탱크(12)에 저장된 연료를 가열시키기 위해서는 방열판(42)을 설치하여 열전도 면적을 최대화 함이 바람직하기 때문이다.This requires that a sufficient contact surface between the heat source and the fuel is secured to rapidly advance the heat conduction. Since the fuel tank 12 itself has a large capacity, the heat sink 42 is used to heat the fuel stored in the large capacity fuel tank 12. This is because it is desirable to maximize the heat conduction area by installing.

방열판(42)이 설치되는 위치는 연료가 신속히 가열되어 공급되는 위치인 연료탱크(12)의 출구측인 연료탱크의 하부에 설치되어짐이 바람직하며, 방열판(42)이 하부에 설치되어 있으므로 전열선(36)의 적열에 의해 방열판(42)이 가열되면 연료의 대류가 급속도로 진행된다.The heat sink 42 is preferably installed at the lower portion of the fuel tank at the outlet side of the fuel tank 12, which is a position where the fuel is rapidly heated and supplied. Since the heat sink 42 is disposed at the lower portion, the heating wire ( When the heat sink 42 is heated by the red heat of 36, convection of the fuel proceeds rapidly.

따라서, 본 발명에서는 냉간시 특히 디젤유가 빙결되는 온도이하인 혹한기에 시동을 걸게 되는 경우, 글로우 플러그 등과 같은 예열장치가 가동됨과 더불어 온도센서(14)(16)에서 송출된 신호에 의해 릴레이스위치(26)가 접점된다.Therefore, in the present invention, in case of starting the cold weather, especially when the temperature is below the temperature at which the diesel oil freezes, the preheating device such as a glow plug is activated and the relay switch 26 is transmitted by the signal transmitted from the temperature sensors 14 and 16. ) Is contacted.

이에 의해 배터리(18)로부터 전열수단(20)(22)에 전원이 공급되며, 연료필터(10)의 전열선(34)과 연료탱크(12)의 전열선(36)이 적열되어 디젤유의 결빙을 해제하게 되고, 가열에 의해 연료의 온도가 상승되어 더이상의 가열이 필요없게 되면 온도센서(14)(16)가 이를 감지하여 릴레이스위치(26)를 단락시켜 배터리(18)에서의 전원이 차단되며, 이에 의해 가열이 중단되는 것이다.Thereby, power is supplied from the battery 18 to the heat transfer means 20, 22, and the heat transfer line 34 of the fuel filter 10 and the heat transfer line 36 of the fuel tank 12 are glowing to release freezing of diesel oil. When the temperature of the fuel is raised by heating, and no further heating is required, the temperature sensor 14, 16 detects this, short-circuits the relay switch 26, and the power from the battery 18 is cut off. As a result, the heating is stopped.

상술된 바와 같이 본 발명에 따르면, 연료필터와 연료탱크에 전열수단을 설치하고 이 전열수단은 온도센서에 의한 컨트롤유니트로부터 전원의 공급이 제어되도록하여 디젤유의 결빙이 발생되는 혹한기에 상기 부위를 가열시켜 연료의 원할한 공급을 유지시킴으로써, 예열장치만으로 디젤엔진을 시동시킬 수 없는 혹한기에도 디젤엔진의 시동이 원할해지는 효과가 있다.As described above, according to the present invention, a heating filter is installed in the fuel filter and the fuel tank, and the heating means controls the supply of power from the control unit by the temperature sensor so as to heat the part in a cold season in which diesel oil freezing occurs. By maintaining a smooth supply of fuel, the diesel engine can be started smoothly even in cold weather in which the preheating device cannot start the diesel engine alone.

Claims (3)

혹한기 디젤유의 결빙온도의 시작점이 검출되게 연료필터(10)와 연료탱크(12) 내측에 온도센서(14)(16)가 설치되고, 상기 연료필터(10)와 연료탱크(12)에는 배터리(18)를 전원으로 하는 전열수단(20)(22)이 설치되는 한편, 디젤유 결빙온도 이하에서의 시동시 상기 온도센서(14)(16)에 의해 상기 전열수단(20)(22)으로 전원이 공급되도록 컨트롤유니트(28)에 냉간예열단자(30)와 상기 온도센서(14)(16)와 상기 전열수단(20)(22)이 연결된 디젤엔진의 연료가열장치.Temperature sensors 14 and 16 are installed inside the fuel filter 10 and the fuel tank 12 so that the starting point of the freezing temperature of the cold weather diesel oil is detected, and the fuel filter 10 and the fuel tank 12 have a battery ( 18 is provided with power supply means (20) and (22) for powering the heat transfer means (20) and (22) by the temperature sensors (14) and (16) when starting at a diesel oil freezing temperature. Cold preheating terminal 30, the temperature sensor (14) (16) and the heat transfer means (20), 22 is connected to the control unit 28 to supply the fuel heating device of the diesel engine. 제 1 항에 있어서, 연료필터(10)에 설치된 전열수단(20)은 연료필터(10)의 필터엘리먼트(32) 연료유입부에 근접되게 설치되는 온도센서(14)의 외측에 필터엘리먼트(32)의 연료유입부가 둘러싸여지게 전열선(34)이 설치된 것을 특징으로 특징으로 하는 디젤엔진의 연료가열장치.The filter element 32 of claim 1, wherein the heat transfer means (20) installed in the fuel filter (10) is disposed outside the temperature sensor (14) installed near the fuel inlet of the filter element (32) of the fuel filter (10). Fuel heater of the diesel engine, characterized in that the heating wire 34 is installed so that the fuel inlet portion of the). 제 1 항에 있어서, 연료탱크(12)에 설치된 전열수단(22)은 연료탱크(12) 의 출구측에 근접되는 위치에 방열판(42)이 설치되고 이 방열판(42)에 전열선(36)이 설치 되어진 것을 특징으로 하는 디젤엔진의 연료가열장치.The heat transfer means (22) according to claim 1, wherein the heat transfer means (22) provided in the fuel tank (12) is provided with a heat sink (42) at a position close to the outlet side of the fuel tank (12). Fuel heating device of a diesel engine, characterized in that installed.
KR1020000067377A 2000-11-14 2000-11-14 Fuel Heating Equipment of Diesel Engine KR20020037465A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100666082B1 (en) * 2005-04-01 2007-01-10 이근태 Fuel heating apparatus for Diesel engine
KR100919435B1 (en) * 2007-06-05 2009-09-29 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 fuel supplying apparatus for heavy construction equipment
WO2013085155A1 (en) * 2011-12-06 2013-06-13 Lee Young Hun Heating system of a fuel filter used in a diesel engine
WO2020068434A1 (en) * 2018-09-28 2020-04-02 Illinois Tool Works Inc. Apparatus for hybrid-diesel engine block heater

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Publication number Priority date Publication date Assignee Title
JPS5951154A (en) * 1982-09-17 1984-03-24 Toyota Motor Corp Fuel supply device for diesel engine
US4539108A (en) * 1983-04-12 1985-09-03 Nippondenso Co., Ltd. Fuel heating type fuel filter device
KR0129286Y1 (en) * 1994-12-27 1998-12-15 전성원 Fuel heating device for an automobile
KR0181540B1 (en) * 1995-12-22 1999-03-20 김태구 Heating apparatus for engine cooling water of compressed natural gas vehicles

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS5951154A (en) * 1982-09-17 1984-03-24 Toyota Motor Corp Fuel supply device for diesel engine
US4539108A (en) * 1983-04-12 1985-09-03 Nippondenso Co., Ltd. Fuel heating type fuel filter device
KR0129286Y1 (en) * 1994-12-27 1998-12-15 전성원 Fuel heating device for an automobile
KR0181540B1 (en) * 1995-12-22 1999-03-20 김태구 Heating apparatus for engine cooling water of compressed natural gas vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100666082B1 (en) * 2005-04-01 2007-01-10 이근태 Fuel heating apparatus for Diesel engine
KR100919435B1 (en) * 2007-06-05 2009-09-29 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 fuel supplying apparatus for heavy construction equipment
WO2013085155A1 (en) * 2011-12-06 2013-06-13 Lee Young Hun Heating system of a fuel filter used in a diesel engine
KR101325626B1 (en) * 2011-12-06 2013-11-06 이영훈 Heating device for a fuel filter of diesel engine
WO2020068434A1 (en) * 2018-09-28 2020-04-02 Illinois Tool Works Inc. Apparatus for hybrid-diesel engine block heater

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