KR20080048613A - Dual system for the change method and dual system a selection provision of dieselfuel and biofuel used electronic control unit - Google Patents

Dual system for the change method and dual system a selection provision of dieselfuel and biofuel used electronic control unit Download PDF

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KR20080048613A
KR20080048613A KR1020060118787A KR20060118787A KR20080048613A KR 20080048613 A KR20080048613 A KR 20080048613A KR 1020060118787 A KR1020060118787 A KR 1020060118787A KR 20060118787 A KR20060118787 A KR 20060118787A KR 20080048613 A KR20080048613 A KR 20080048613A
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engine
fuel
diesel fuel
biofuel
diesel
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KR1020060118787A
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Korean (ko)
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KR100838226B1 (en
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김영봉
강승욱
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주식회사 케이피시스텍
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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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0652—Biofuels, e.g. plant oils
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0673—Valves; Pressure or flow regulators; Mixers
    • F02D19/0676—Multi-way valves; Switch-over valves
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

A dual system for selectively supplying diesel fuel or bio fuel using an electronic control unit is provided to selectively supply diesel fuel or bio fuel through a divert valve and a relief valve which are controlled via the electronic control unit, and to feed back the bio fuel through the relief valve so that the bio fuel does not remain in an engine and the relief valve when the engine is off. A dual system for selectively supplying diesel fuel or bio fuel using an electronic control unit includes an electronic control unit(10), a divert valve(20), a relief valve(30), a heating unit(40), and an engine(50). The electronic control unit functions to start the engine in response of a start signal generated by turning a key, and to control a car body. The divert valve is connected to the electronic control unit, and selects diesel fuel or bio fuel in response to a control signal of the electronic control unit, thus supplying the diesel fuel or bio fuel to the engine. The diesel fuel and the bio fuel flow from the divert valve through the relief valve, and the relief valve feeds back the bio fuel. The heating unit preheats the diesel fuel and the bio fuel supplied from the relief valve, prior to supplying the diesel fuel and the bio fuel to the engine. The diesel fuel or the bio fuel is supplied to the engine according to the required condition. A temperature sensor(51) for measuring a temperature and a three-dimensional sensor(52) for detecting explosion pressure and vibration characteristics due to internal explosion are attached to the engine.

Description

ＥＣＵ부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템과 이를 이용한 연료변환방법{Dual system for the change method and dual system a selection provision of dieselfuel and biofuel used electronic control unit}Dual system for the change method and dual system a selection provision of dieselfuel and biofuel used electronic control unit}

도 1은 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템의 구성도, 1 is a configuration diagram of a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit according to the present invention;

도 2는 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템을 이용한 연료변환방법을 나타낸 순서도, 2 is a flowchart illustrating a fuel conversion method using a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit according to the present invention;

도 3은 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템의 타이밍도.3 is a timing diagram of a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : ECU부 20 : 방향전환밸브10: ECU 20: direction switching valve

30 : 릴리프밸브 40 : 히팅장치30: relief valve 40: heating device

50 : 엔진50: engine

본 발명은 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템에 관한것으로 상세하게는 디젤과 바이오디젤을 이용하는 듀얼엔진 시스템에 있어서, 운전자가 키를 돌려 스타트신호를 주면 엔진을 스타트시키며, 차체를 제어하는 ECU(electronic control unit)부와; 상기 ECU부와 연결되어 ECU부의 제어신호로 디젤연료와 바이오연료를 선택하여 엔진에 공급하는 방향전환밸브와; 상기 방향전환밸브에서 공급되는 디젤과 바이오 연료가 통과되며, 바이오 연료를 피드백 시키는 릴리프밸브와; 상기 릴리프밸브에서 공급되는 디젤연료 및 바이오연료를 예열시켜 엔진에 공급하는 히팅장치와; 상기 디젤연료와 바이오연료를 상황에 맞게 공급받아 동작되며, 온도를 측정하는 온도센서와 폭발압력 및 내부의 폭발로인한 진동특성을 감지하는 3차원센서가 부착된 엔진;을 포함하여 구성되는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템에 관한것이다.The present invention relates to a dual system for selecting and supplying diesel fuel and biofuel using an ECU unit. Specifically, in a dual engine system using diesel and biodiesel, the driver starts the engine by turning a key and giving a start signal. An ECU (electronic control unit) for controlling the vehicle body; A direction switching valve connected to the ECU unit for selecting diesel fuel and bio fuel as an engine control signal and supplying the fuel to the engine; A relief valve through which the diesel fuel and the bio fuel supplied from the directional valve pass, and feeding back the bio fuel; A heating device for preheating the diesel fuel and the biofuel supplied from the relief valve to supply the engine; ECU unit comprising; an engine equipped with a diesel fuel and a biofuel to be operated according to a situation, and equipped with a temperature sensor for measuring a temperature and a three-dimensional sensor for detecting vibration characteristics caused by an explosion pressure and an explosion inside; It is a dual system that selects and supplies diesel fuel and biofuel.

일반적으로, 다양한 장치, 설비, 시스템 등에 동력을 전달하기 위한 엔진 또는 기관은 사용 연료 또는 동력원에 따라, 가솔린엔진, 디젤엔진, 가스엔진, 전기기관 등 다양하게 구분된다. 또한, 연료의 효과적인 이용을 위해 2가지 이상의 연료를 혼용하여 사용하는 혼소용 엔진이 개발되고 있으며, 예컨대 천연 액화 가스와 가솔린 또는 디젤을 혼용하여 사용하는 엔진이 일반적으로 사용되고 있다.In general, engines or engines for transmitting power to various devices, facilities, systems, etc. are variously classified according to the fuel or power source used, such as gasoline engine, diesel engine, gas engine, electric engine. In addition, a hybrid engine using a mixture of two or more fuels for the efficient use of fuel has been developed. For example, an engine using a mixture of natural liquefied gas and gasoline or diesel is generally used.

한편, 경제학, 환경학 등에 저촉되는 여러 가지 제반 사항을 충족시키기 위해 바이오 가스의 이용에 관한 연구가 활발히 진행되고 있으며, 이 같은 연구개발의 결과로서 최근에는 바이오가스 와 디젤을 혼용하여 사용하는 혼소용 바이오 가스의 엔진이 사용되고 있다. 이 같은 종래의 혼소용 바이오 가스 엔진은 대개 일반 적인 디젤엔진의 연료제어 방식과 유사한 방식으로 연료량을 제어하는 바, 즉, 부하의 변동에 관계없이 항상 일정한 엔진 회전수를 유지하기 위해 기계적으로 또는 전자적으로 연료량을 증가시키는 방식으로 연료를 제어하고 있다. 이에 따라, 연료효율을 최대화 하기 위해 바이오 가스의 공급량을 증가시키면 디젤연료의 공급량이 자동적으로 감소하게 된다. On the other hand, research on the use of biogas has been actively conducted in order to satisfy various matters inconsistent with economics, environmental studies, etc. As a result of such research and development, mixed bio-diesel using a mixture of biogas and diesel has recently been developed. Gas engines are used. Such conventional mixed-gas biogas engines usually control the amount of fuel in a manner similar to that of a conventional diesel engine, i.e. mechanically or electronically to maintain a constant engine speed at all times regardless of load variations. Fuel is controlled in such a way that the amount of fuel is increased. Accordingly, increasing the supply of biogas to maximize fuel efficiency automatically reduces the supply of diesel fuel.

그러나, 이 경우 디젤연료의 공급량이 과도하게 감소되면 실화(失火;misfire)가 발생되어 엔진의 회전수가 변동됨은 물론 진동 및 소음을 초래하게 되는 문제점이 있다.However, in this case, if the supply amount of diesel fuel is excessively reduced, misfire is generated and the rotation speed of the engine is changed, as well as causing vibration and noise.

역으로, 상술된 현상을 방지하기 위해 엔진의 모든 부하조건에서 실화가 발생되지 않는 범위 또는 한계치로 바이오 가스의 공급량을 제한하면 바이오 가스의 디젤연료 대체율이 저하되는 문제점이 있다.Conversely, in order to prevent the above-mentioned phenomenon, limiting the supply amount of biogas to the range or limit in which misfire does not occur under all load conditions of the engine has a problem in that the replacement rate of diesel fuel of biogas is lowered.

본 발명은 상기의 문제점을 해결하기 위해 안출된 것으로서, ECU부를 통해 제어되는 방향전환밸브와 릴리프밸브를 통해 디젤연료와 바이오연료를 전환하며, 엔진 오프시 엔진과 릴리프밸브등에 바이오연료가 남지않도록 릴리프밸브를 통해 피드백시키는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템을 제공하는데 있다.The present invention has been made to solve the above problems, and converts diesel fuel and bio fuel through the directional control valve and the relief valve controlled by the ECU, and relief so that the bio fuel is not left in the engine and the relief valve when the engine off It is to provide a dual system that selects and supplies diesel fuel and bio fuel by using an ECU unit fed back through a valve.

본 발명은 상기의 목적을 달성하기 위하여 아래와 같은 특징을 갖는다.The present invention has the following features to achieve the above object.

본 발명은 디젤과 바이오디젤을 이용하는 듀얼엔진 시스템에 있어서, 운전자 가 키를 돌려 스타트신호를 주면 엔진을 스타트시키며, 차체를 제어하는 ECU(electronic control unit)부와; 상기 ECU부와 연결되어 ECU부의 제어신호로 디젤연료와 바이오연료를 선택하여 엔진에 공급하는 방향전환밸브와; 상기 방향전환밸브에서 공급되는 디젤과 바이오 연료가 통과되며, 바이오 연료를 피드백 시키는 릴리프밸브와; 상기 릴리프밸브에서 공급되는 디젤연료 및 바이오연료를 예열시켜 엔진에 공급하는 히팅장치와; 상기 디젤연료와 바이오연료를 상황에 맞게 공급받아 동작되며, 온도를 측정하는 온도센서와 폭발압력 및 내부의 폭발로인한 진동특성을 감지하는 3차원센서가 부착된 엔진;을 포함하여 구성된다.The present invention provides a dual engine system using diesel and biodiesel, comprising: an electronic control unit (ECU) unit for starting the engine and controlling a vehicle body when the driver gives a start signal by turning a key; A direction switching valve connected to the ECU unit for selecting diesel fuel and bio fuel as an engine control signal and supplying the fuel to the engine; A relief valve through which the diesel fuel and the bio fuel supplied from the directional valve pass, and feeding back the bio fuel; A heating device for preheating the diesel fuel and the biofuel supplied from the relief valve to supply the engine; The diesel fuel and the biofuel are operated in accordance with the situation, the temperature sensor for measuring the temperature and the engine equipped with a three-dimensional sensor for detecting the vibration characteristics caused by the explosion pressure and explosion inside.

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

도 1은 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템의 구성도이고, 도 2는 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템을 이용한 연료변환방법을 나타낸 순서도이며, 도 3은 본 발명에 따른 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템의 타이밍도이다.1 is a configuration diagram of a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit according to the present invention, and FIG. 2 is a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit according to the present invention. 3 is a flowchart illustrating a fuel conversion method using a system, and FIG. 3 is a timing diagram of a dual system that selects and supplies a diesel fuel and a biofuel using an ECU unit according to the present invention.

본 발명을 도면을 참조하여 설명하면 다음과 같다.The present invention will be described with reference to the drawings.

디젤과 바이오디젤을 이용하는 듀얼엔진 시스템에 있어서, 운전자가 키를 돌려 스타트신호를 주면 엔진(50)을 스타트시키며, 차체를 제어하는 ECU(electronic control unit)부(10)와; 상기 ECU부(10)와 연결되어 ECU부(10)의 제어신호로 디젤연료와 바이오연료를 선택하여 엔진에 공급하는 방향전환밸브(20)와; 상기 방향전 환밸브(20)에서 공급되는 디젤과 바이오 연료가 통과되며, 바이오 연료를 피드백 시키는 릴리프밸브(30)와; 상기 릴리프밸브(30)에서 공급되는 디젤연료 및 바이오연료를 예열시켜 엔진에 공급하는 히팅장치(40)와; 상기 디젤연료와 바이오연료를 상황에 맞게 공급받아 동작되며, 온도를 측정하는 온도센서(51)와 폭발압력 및 내부의 폭발로인한 진동특성을 감지하는 3차원센서(52)가 부착된 엔진(50);을 포함하여 구성된다.A dual engine system using diesel and biodiesel, comprising: an electronic control unit (ECU) unit 10 for controlling the vehicle body when the driver turns a key to start the engine 50; A direction switching valve 20 connected to the ECU unit 10 to select diesel fuel and bio fuel as a control signal of the ECU unit 10 and supply the diesel fuel and the bio fuel to the engine; A relief valve 30 through which the diesel fuel and the biofuel supplied from the directional valve 20 pass, and which feeds back the biofuel; A heating device 40 for preheating the diesel fuel and the bio fuel supplied from the relief valve 30 to the engine; The engine 50 is operated by being supplied with the diesel fuel and the biofuel according to a situation, and is equipped with a temperature sensor 51 for measuring temperature and a three-dimensional sensor 52 for detecting vibration characteristics caused by explosion pressure and explosion inside. It is configured to include.

이때, 상기 방향전환밸브(20)는 ECU부(10)의 제어신호로 동작하며, 초기구동시 디젤연료로 구동되어지고, 엔진(50)이 일정이상의 온도가되고, 엔진(50)내부에서의 폭발로 인한 진동특성을 측정하여 바이오연료로 전환하게된다.At this time, the directional valve 20 is operated by the control signal of the ECU unit 10, is driven by the diesel fuel during the initial drive, the engine 50 is a certain temperature or more, and the inside of the engine 50 The vibration characteristics of the explosion are measured and converted into biofuels.

그리고, 상기 릴리프밸브(30)는 ECU부(10)의 제어로 동작되며, 엔진(50)오프시 바이오연료를 피드백 시켜 릴리프밸브와 엔진(50)내부를 디젤연료로 채우게 된다.In addition, the relief valve 30 is operated under the control of the ECU unit 10, and feeds back the biofuel when the engine 50 is off to fill the relief valve and the engine 50 with diesel fuel.

또한, 상기 히팅장치(40)는 바이오연료와 디젤연료를 일정온도 이상으로 가열하게된다.In addition, the heating device 40 is to heat the biofuel and diesel fuel above a predetermined temperature.

그리고 상기 장치를 이용한 방법은 다음과 같다.And the method using the device is as follows.

디젤과 바이오디젤을 이용하는 듀얼엔진 시스템을 이용한 방법에 있어서, 운전자가 스타트키를 이용해 시동을 거는 시동단계와;(S10) 상기 시동신호가 ECU(electronic control unit)부(10)에 입력되면 방향전환밸브(20)를 통해 디젤연료와 바이오연료중 디젤연료를 엔진(50)에 공급하는 디젤연료 공급단계와;(S20) 상기 디젤연료로 구동되던 엔진(50)이 일정 온도와 일정이상의 징동특성으로 구동되 면 상기 방향전환밸브(20)를 통해 바이오연료로 전환되는 연료전환단계와;(S30) 상기 방향전환밸브(20)를 통해 공급되는 바이오연료와 디젤연료를 일정온도 이상 가열하여 엔진(50)에 공급하는 연료가열단계와;(S40) 상기 엔진(50)이 구동되어지다가 운전자가 스타트키를 오프위치에 놓아 시동을 오프시키면 바이오연료를 릴리프밸브(30)를 통해 연료통으로 피드백시키고, 상기 디젤 연료를 엔진에 주입하는 연료주입단계;(S50)를 포함하여 이루어진다.In the method using a dual engine system using diesel and biodiesel, a starting step in which the driver starts using the start key; (S10) When the start signal is input to the ECU (electronic control unit) unit 10 A diesel fuel supplying step of supplying diesel fuel and diesel fuel in the biofuel to the engine 50 through the valve 20; and (S20) the engine 50 driven by the diesel fuel has a certain temperature and a predetermined impulse characteristic. The fuel conversion step is converted to biofuel through the direction switching valve 20 when driven; (S30) By heating the biofuel and diesel fuel supplied through the direction switching valve 20 over a predetermined temperature engine 50 (S40) and the engine 50 is driven while the driver puts the start key in the off position and turns off the start and feeds back the biofuel to the fuel tank through the relief valve 30, Comprises a (S50); a fuel injection step of injecting diesel fuel into the engine.

즉, 운전자가 시동을 걸면 스타트신호가 ECU부(10)에 전송되고, 먼저 방향전환밸브(20)에 ECU부(10)에서 제어신호를 전송하며, 상기 방향전환밸브(20)가 ECU부(10)의 제어신호로 디젤연료측으로 방향을 전환하여 디젤연료가 공급되어지도록 하여 시동을 걸고, 상기 엔진의 온도와 진동특성이 일정이상 올라가면 상기 방향전환밸브(20)에서 ECU부(10)의 제어신호로 인해 바이오연료측으로 변환하여 엔진(50)에 공급하게 된다.That is, when the driver starts up, a start signal is transmitted to the ECU unit 10, first, a control signal is transmitted from the ECU unit 10 to the direction switching valve 20, and the direction switching valve 20 is connected to the ECU unit ( The control signal of 10) changes the direction to the diesel fuel side to start the diesel fuel to be supplied, and if the temperature and vibration characteristics of the engine rise above a certain level, the control of the ECU unit 10 by the direction switching valve 20. The signal is converted to the biofuel side and supplied to the engine 50.

이때, 상기 바이오연료는 릴리프밸브(30)를 통과해 히팅장치(40)를 지나치면서 히팅장치(40)에서 일정온도 이상으로 가열되어 엔진으로 주입되어진다.At this time, the biofuel is heated to a predetermined temperature or more in the heating device 40 while passing through the heating valve 40 through the relief valve 30 is injected into the engine.

그리고, 엔진의 시동을 오프시킬때 ECU부(10)의 제어신호로 방향전환밸브(20)는 디젤연료측으로 방향을 전환하고, 릴리프밸브(30)에서 남아있는 바이오연료를 다시 바이오연료통으로 보내 엔진(50)과 릴리프밸브(30)의 내부에 디젤연료로 채우게 된다.Then, when the engine is turned off, the direction switching valve 20 switches to the diesel fuel side by the control signal of the ECU unit 10 and sends the remaining biofuel from the relief valve 30 to the biofuel cylinder. The inside of the 50 and the relief valve 30 is filled with diesel fuel.

상기에서 기술된 바와같이 본 발명은, ECU부를 통해 제어되는 방향전환밸브 와 릴리프밸브를 통해 디젤연료와 바이오연료를 전환하며, 엔진 오프시 엔진과 릴리프밸브등에 바이오연료가 남지않도록 릴리프밸브를 통해 피드백시키며, 자동으로 디젤과 바이오연료를 전환하는 효과가 있다.As described above, the present invention converts the diesel fuel and the biofuel through the directional valve and the relief valve controlled through the ECU unit, and feeds back through the relief valve so that biofuel is not left in the engine and the relief valve when the engine is turned off. It has the effect of automatically converting diesel and biofuel.

Claims (5)

디젤과 바이오디젤을 이용하는 듀얼엔진 시스템에 있어서,In a dual engine system using diesel and biodiesel, 운전자가 키를 돌려 스타트신호를 주면 엔진(50)을 스타트시키며, 차체를 제어하는 ECU(electronic control unit)부(10)와;An ECU (electronic control unit) unit 10 for starting the engine 50 when the driver gives a start signal by turning a key, and controls the vehicle body; 상기 ECU부(10)와 연결되어 ECU부(10)의 제어신호로 디젤연료와 바이오연료를 선택하여 엔진에 공급하는 방향전환밸브(20)와;A direction switching valve 20 connected to the ECU unit 10 to select diesel fuel and bio fuel as a control signal of the ECU unit 10 and supply the diesel fuel and the bio fuel to the engine; 상기 방향전환밸브(20)에서 공급되는 디젤과 바이오 연료가 통과되며, 바이오 연료를 피드백 시키는 릴리프밸브(30)와;A relief valve 30 through which the diesel fuel and the biofuel supplied from the direction switching valve 20 pass, and which feeds back the biofuel; 상기 릴리프밸브(30)에서 공급되는 디젤연료 및 바이오연료를 예열시켜 엔진에 공급하는 히팅장치(40)와;A heating device 40 for preheating the diesel fuel and the bio fuel supplied from the relief valve 30 to the engine; 상기 디젤연료와 바이오연료를 상황에 맞게 공급받아 동작되며, 온도를 측정하는 온도센서(51)와 폭발압력 및 내부의 폭발로인한 진동특성을 감지하는 3차원센서(52)가 부착된 엔진(50);The engine 50 is operated by being supplied with the diesel fuel and the biofuel according to a situation, and is equipped with a temperature sensor 51 for measuring temperature and a three-dimensional sensor 52 for detecting vibration characteristics caused by explosion pressure and explosion inside. ); 을 포함하여 구성된 것을 특징으로 하는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템.Dual system for selecting and supplying diesel fuel and biofuel using the ECU, characterized in that configured to include. 제 1항에 있어서,The method of claim 1, 상기 방향전환밸브(20)는 ECU(electronic control unit)부(10)의 제어신호로 동작하며, 초기구동시 디젤연료로 구동되어지고, 엔진(50)이 일정이상의 온도가되 고, 엔진(50)내부에서의 폭발로 인한 진동특성을 측정하여 바이오연료로 전환하는 것을 특징으로 하는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템.The directional valve 20 is operated by the control signal of the ECU (electronic control unit) unit 10, is driven by the diesel fuel during the initial drive, the engine 50 is a predetermined temperature or more, the engine 50 Dual system for selecting and supplying diesel fuel and biofuel using ECU, which measures vibration characteristics due to internal explosion and converts it into biofuel. 제 1항에 있어서, The method of claim 1, 상기 릴리프밸브(30)는 ECU(electronic control unit)부(10)의 제어로 동작되며, 엔진(50)오프시 바이오연료를 피드백 시켜 릴리프밸브와 엔진(50)내부를 디젤연료로 채우는 것을 특징으로 하는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템.The relief valve 30 is operated by the control of the ECU (electronic control unit) unit 10, characterized in that to feed the bio-fuel when the engine 50 is off to fill the relief valve and the engine 50 with diesel fuel. Dual system that selects and supplies diesel fuel and bio fuel using ECU unit. 제 1항에 있어서,The method of claim 1, 상기 히팅장치(40)는 바이오연료와 디젤연료를 일정온도 이상으로 가열하는 것을 특징으로 하는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템.The heating device 40 is a dual system for selecting and supplying diesel fuel and biofuel using the ECU unit, characterized in that for heating the biofuel and diesel fuel to a predetermined temperature or more. 디젤과 바이오디젤을 이용하는 듀얼엔진 시스템을 이용한 방법에 있어서,In a method using a dual engine system using diesel and biodiesel, 운전자가 스타트키를 이용해 시동을 거는 시동단계와;(S10)A startup step in which the driver starts using the start key; (S10) 상기 시동신호가 ECU(electronic control unit)부(10)에 입력되면 방향전환밸브(20)를 통해 디젤연료와 바이오연료중 디젤연료를 엔진(50)에 공급하는 디젤연료 공급단계와;(S20)When the start signal is input to the ECU (electronic control unit) unit 10 and the diesel fuel supply step of supplying the diesel fuel of the diesel fuel and biofuel to the engine 50 through the directional valve 20; (S20) 상기 디젤연료로 구동되던 엔진(50)이 일정 온도와 일정이상의 징동특성으로 구동되면 상기 방향전환밸브(20)를 통해 바이오연료로 전환되는 연료전환단계와;(S30)A fuel conversion step of converting the engine 50 driven by the diesel fuel into a biofuel through the direction switching valve 20 when the engine 50 is driven with a predetermined temperature and a predetermined pulsation characteristic; (S30) 상기 방향전환밸브(20)를 통해 공급되는 바이오연료와 디젤연료를 일정온도 이상 가열하여 엔진(50)에 공급하는 연료가열단계와;(S40)A fuel heating step of heating the biofuel and diesel fuel supplied through the directional valve 20 to a predetermined temperature and supplying the engine 50 to the fuel tank; 상기 엔진(50)이 구동되어지다가 운전자가 스타트키를 오프위치에 놓아 시동을 오프시키면 바이오연료를 릴리프밸브(30)를 통해 연료통으로 피드백시키고, 상기 디젤 연료를 엔진에 주입하는 연료주입단계;(S50)를 포함하여 이루어지는 ECU부를 이용하여 디젤연료와 바이오연료를 선택하여 공급하는 듀얼 시스템을 이용한 연료변환방법.A fuel injection step of feeding the diesel fuel into the engine by feeding back the biofuel to the fuel container through the relief valve 30 when the engine is driven and the driver puts the start key in the off position to turn off the engine; A fuel conversion method using a dual system for selecting and supplying diesel fuel and biofuel using an ECU unit including S50).
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