KR100715895B1 - Engine oil sensing and alarm device - Google Patents

Engine oil sensing and alarm device Download PDF

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KR100715895B1
KR100715895B1 KR1020040108469A KR20040108469A KR100715895B1 KR 100715895 B1 KR100715895 B1 KR 100715895B1 KR 1020040108469 A KR1020040108469 A KR 1020040108469A KR 20040108469 A KR20040108469 A KR 20040108469A KR 100715895 B1 KR100715895 B1 KR 100715895B1
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oil
engine
resistance
dielectric constant
engine oil
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KR1020040108469A
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Korean (ko)
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KR20060069895A (en
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김기범
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현대자동차주식회사
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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
    • F01M11/10—Indicating devices; Other safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
    • 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
    • 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
    • F01M2011/1413—Indicating devices; Other safety devices for indicating the necessity to change the oil by considering dielectric properties

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
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  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

본 발명은 엔진오일 열화감지 및 경보장치에 관한 것으로서, 특히 오일팬 내부에 설치되어 오일의 유전율과 저항을 감지하는 수단을 구비하고, 상기 감지된 오일의 유전율과 저항정보를 토대로 오일의 교환시기를 결정하는 수단 및 상기 결정된 오일교환시기를 운전자에게 경보하는 수단으로 구성하므로서, 적절한 시기에 엔진오일을 교체할 수 있음에 따라 오일열화로 인한 엔진의 고장 및 오작동 등을 방지할 수 있고, 운전자가 직접 엔진룸을 열고 오일게이지로서 찍어서 오일의 상태를 점검하지 않아도 되므로 사용상 편리함을 제공하며, 과학적인 전자장치에 의해 오일교환시기를 알려줌에 따라 차량의 상품성이 향상되고 불필요한 오일교환을 억제하여 환경보호에 이바지할 수 있도록 한 엔진오일 열화감지 및 경보장치에 관한 것이다.The present invention relates to an engine oil deterioration detection and alarm device, and in particular, is provided inside the oil pan and has a means for detecting the dielectric constant and resistance of the oil, and the oil replacement time based on the detected dielectric constant and resistance information of the oil. By means of determining and means for alerting the driver of the determined oil change time, it is possible to replace the engine oil at the appropriate time, thereby preventing engine failure and malfunction due to oil deterioration, and the driver directly It is convenient to use because it does not need to check the condition of oil by opening the engine room and taking oil gauges.In addition, scientific electronics inform the oil change time and improve the merchandise of the vehicle and prevent unnecessary oil changes. The present invention relates to an engine oil deterioration detection and alarm device.

오일, 열화감지, 엔진오일 열화감지부, 교환시기 결정부, 알루미늄 전극Oil, deterioration detection, engine oil deterioration detection part, replacement timing decision part, aluminum electrode

Description

엔진오일 열화감지 및 경보장치{Engine oil sensing and alarm device}Engine oil deterioration detection and alarm device

도 1 은 본 발명의 엔진오일 열화감지 및 경보장치를 보인 블럭도.1 is a block diagram showing the engine oil degradation detection and alarming device of the present invention.

도 2 는 본 발명에 적용된 오일열화감지부를 보인 등가회로.Figure 2 is an equivalent circuit showing the oil degradation detection unit applied to the present invention.

도 3 은 본 발명에 적용된 오일열화감지부를 보인 도면.Figure 3 is a view showing an oil degradation detection unit applied to the present invention.

도 4 는 오일의 산화에 의한 유전율변화량을 보인 그래프.4 is a graph showing the amount of change in permittivity due to oxidation of oil.

도 5 는 오일의 기계적 마모에 의한 오일의 저항변화량을 보인 그래프.5 is a graph showing the resistance change of the oil by the mechanical wear of the oil.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1 : 엔진오일 열화감지부 2 : 구동회로부1: Engine oil deterioration detection unit 2: Drive circuit

3 : 신호증폭부 4 : 교환시기 결정부3: Signal amplification unit 4: Exchange time determining unit

5 : 표시부 11 : 유리기판5: display unit 11: glass substrate

12 : 알루미늄 전극 13 : 폴리머12 aluminum electrode 13 polymer

RS : 저항 CS : 콘덴서RS: Resistor CS: Capacitor

본 발명은 엔진오일 열화감지 및 경보장치에 관한 것으로서, 특히 적절한 시기에 엔진오일을 교체할 수 있음에 따라 오일열화로 인한 엔진의 고장 및 오작동 등을 방지할 수 있고, 운전자가 직접 엔진룸을 열고 오일게이지로서 찍어서 오일의 상태를 점검하지 않아도 되므로 사용상 편리함을 제공하며, 과학적인 전자장치에 의해 오일교환시기를 알려줌에 따라 차량의 상품성이 향상되고 불필요한 오일교환을 억제하여 환경보호에 이바지할 수 있도록 한 엔진오일 열화감지 및 경보장치에 관한 것이다.The present invention relates to an engine oil deterioration detection and alarm device, and in particular, the engine oil can be replaced at an appropriate time to prevent engine failure and malfunction due to oil deterioration, and the driver directly opens the engine room. It is convenient to use because it does not have to check the condition of oil by taking it as an oil gauge, and it can improve the merchandise of the vehicle as it informs the oil change time by scientific electronic devices and contribute to environmental protection by suppressing unnecessary oil change. An engine oil deterioration detection and alarm device.

최근 차량 전자화에 대한 관심과 기술이 나날이 발전하고 있으나 엔진오일을 교체하는 시기를 결정하는 방법에 대해서는 전혀 전자화가 이루어지지 않고 있다.Recently, interest and technology for vehicle electronics have been developed day by day, but there is no electronic system at all about how to determine when to replace the engine oil.

현재 엔진오일의 교환시기를 결정하는 방법으로는 운전자가 직접 자동차의 주행거리판을 통해서 결정하거나 오일게이지로서 오일을 찍어서 오일팬에 남아있는 오일의 양 및 점도, 색깔 등을 확인하는 등 대부분이 운전자의 주관에 의존하여 교환시기를 판단하는 방법이 사용되고 있었다.The current method of determining the engine oil replacement time is to determine the amount, viscosity, and color of the oil remaining in the oil pan by directly determining the distance through the vehicle's mileage plate or dipping oil with oil gauge. A method of judging the exchange time was used depending on the subject matter of the.

그러나, 종래기술은 운전자가 일일이 엔진룸을 열어서 오일게이지로서 오일을 찍어서 오일의 양, 점도 및 색깔 등을 확인해야만 하므로 사용상 번거로움이 가중되었고, 운전자의 주관에 의존하여 오일교환시기가 결정되므로 정확도가 떨어지게되며, 오일교체시기가 일정하지 않으므로 기준보다 빨리 교체할 경우 오일의 낭비를 가져올 수 있게되고, 교환시기가 늦어질 경우에는 엔진성능 저하 및 수명저해를 초래하게되는 문제점이 발생하고 있었다.However, in the prior art, the driver has to open the engine room and take oil as an oil gauge to check the amount, viscosity, and color of the oil. Since the oil replacement time is not constant, if the replacement is faster than the standard can be a waste of oil, if the replacement time is late, the engine performance and life will be reduced.

따라서, 상기 문제점을 해결하기 위한 본 발명은 오일팬 내부에 설치되어 오일의 유전율과 저항을 감지하는 수단을 구비하고, 상기 감지된 오일의 유전율과 저항정보를 토대로 오일의 교환시기를 결정하는 수단 및 상기 결정된 오일교환시기를 운전자에게 경보하는 수단으로 구성하므로서, 적절한 시기에 엔진오일을 교체할 수 있음에 따라 오일열화로 인한 엔진의 고장 및 오작동 등을 방지할 수 있고, 운전자가 직접 엔진룸을 열고 오일게이지로서 찍어서 오일의 상태를 점검하지 않아도 되므로 사용상 편리함을 제공하며, 과학적인 전자장치에 의해 오일교환시기를 알려줌에 따라 차량의 상품성이 향상되고 불필요한 오일교환을 억제하여 환경보호에 이바지할 수 있도록 한 엔진오일 열화감지 및 경보장치를 제공함을 목적으로 한다.Therefore, the present invention for solving the above problems is provided in the oil pan is provided with a means for detecting the dielectric constant and resistance of the oil, and means for determining the oil replacement time based on the detected dielectric constant and resistance information of the oil and By configuring the determined oil change time as a means to alert the driver, it is possible to replace the engine oil at the appropriate time to prevent engine failure and malfunction due to oil deterioration, and the driver directly opens the engine room It is convenient to use because it does not have to check the condition of oil by taking it as an oil gauge, and it can improve the merchandise of the vehicle as it informs the oil change time by scientific electronic devices and contribute to environmental protection by suppressing unnecessary oil change. An object is to provide an engine oil deterioration detection and alarm device.

이하, 첨부된 도면 도 1 내지 도 5 를 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 5.

상기 목적달성을 위한 본 발명은,The present invention for achieving the above object,

오일팬 내부에 장착되어 오일의 유전율(오일산화에 의한 화학적 변화량)과 전기 전도도(오일의 기계적 마모에 의한 저항 변화량)를 감지하는 엔진오일 열화감지부(1)와;An engine oil deterioration detecting unit (1) mounted inside the oil pan to sense oil permittivity (chemical change due to oil oxidation) and electrical conductivity (change resistance due to mechanical wear of the oil);

상기 엔진오일 열화감지부(1)를 구동시키는 구동회로부(2)와;A driving circuit unit 2 for driving the engine oil deterioration detecting unit 1;

상기 엔진오일 열화감지부(1)의 출력신호를 일정치 증폭하는 신호증폭부(3)와;A signal amplifier (3) for amplifying the output signal of the engine oil degradation detector (1) at a constant value;

상기 신호증폭부(3)를 통해 입력되는 엔진오일 열화감지부(1)의 감지정보를 토대로 오일의 교환시기를 결정하게되는 교환시기 결정부(4)와;An exchange time determining unit (4) configured to determine an oil exchange time based on the detection information of the engine oil deterioration detecting unit (1) input through the signal amplifier (3);

상기 교환시기 결정부(4)의 결정신호를 운전자에게 경보하여주는 표시부(5); 로 구성된 것을 특징으로 한다.A display unit (5) for alerting the driver of the determination signal of the exchange time determination unit (4); Characterized in that consisting of.

상기 엔진오일 열화감지부(1)는 도 2 에 도시된 바와같이 유리기판(11)의 상면에 Cu/Au/Cr의 3단 전극구조를 갖는 알루미늄 전극(12)을 형성하고, 상기 전극(12)의 상측으로 폴리머(13)를 형성하며, 상기 알루미늄 전극(12)에는 병렬로 저항(Rs)과 콘덴서(Cs)가 연결된 것을 특징으로 한다.
도 3에 도시된 바와 같이, 두 알루미늄 전극(12)을 교대로 교차되게 형성하고, 교번되게 형성된 두 알루미늄 전극(12) 사이에서 일어나는 전기적 변화 즉, 임피던스값을 측정하여, 이 임피던스값을 저항(Rs)과 유전율(Cs)로 변환함으로써(임피던스에 존재하는 저항 성분과 유전율 성분을 추출함으로써), 엔진오일 열화감지부(1)를 이용해 전기전도도와 유전율을 동시에 측정할 수 있는 것이다.The engine oil degradation detection unit 1 forms an aluminum electrode 12 having a three-stage electrode structure of Cu / Au / Cr on the upper surface of the glass substrate 11 as shown in FIG. 2, and the electrode 12 The polymer 13 is formed on the upper side, and the aluminum electrode 12 is connected in parallel with a resistor Rs and a capacitor Cs.
As shown in FIG. 3, two aluminum electrodes 12 are alternately formed, and electrical changes, that is, impedance values, which occur between two alternating aluminum electrodes 12 are measured to measure the impedance value. By converting into Rs) and dielectric constant (Cs) (extracting the resistive and dielectric constant components present in the impedance), the electrical conductivity and the dielectric constant can be simultaneously measured using the engine oil deterioration detection unit (1).

상기와같이 구성된 엔진오일 열화감지부(1)는 입력되는 기준전압(Vac)이 오일의 유전율과 저항에 따라 출력전압이 가변되어 신호증폭부(3)로 출력되게 된다.In the engine oil deterioration detecting unit 1 configured as described above, the output voltage is varied according to the permittivity and resistance of the input reference voltage Vac and is output to the signal amplifier 3.

그리고, 도 4 와 도 5 는 엔진오일의 산화에 따른 유전율변화량과 기계적 마모에 의한 저항변화량을 도시한 그래프이다.4 and 5 are graphs showing the amount of change in dielectric constant and the amount of change in resistance caused by mechanical wear due to oxidation of engine oil.

상기 그래프에 도시된 바와같이 신선한 오일과 일정기간 사용한 오일의 경우 도 4 와같이 신선한 오일에 비해 일정기간 사용한 오일의 유전율이 상대적으로 높으며,As shown in the graph, in the case of fresh oil and oil used for a certain period of time, as shown in FIG.

오일의 저항은 도 5 에 도시된 바와같이 일정기간 사용한 오일의 저항이 신선한 오일의 저항보다 다소 낮아짐을 확인할 수 있다.The resistance of the oil can be seen that the resistance of the oil used for a certain period as shown in Figure 5 is slightly lower than the resistance of fresh oil.

이와같이 구성된 본 발명의 동작을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

오일팬 내에 설치되어 있는 엔진오일 열화감지부(1)는 오일의 유전율과 저항을 동시에 감지하여 그 감지정보를 출력한다.The engine oil deterioration detection unit 1 installed in the oil pan simultaneously detects the dielectric constant and resistance of the oil and outputs the detection information.

이때, 엔진오일 열화감지부(1)의 출력신호는 오일의 유전율 변화량과 저항 변화량에 의해 출력전압이 가변되는 형태이며, 이 엔진오일 열화감지부(1)에서 출력되는 전압은 신호증폭부(3)를 통해 교환시기 결정부(4)로 공급된다.At this time, the output signal of the engine oil deterioration detecting unit 1 is a form in which the output voltage is varied by the change in the dielectric constant and the resistance change of the oil, the voltage output from the engine oil deterioration detecting unit 1 is a signal amplifier 3 It is supplied to the exchange timing determination unit (4) through.

상기 교환시기 결정부(4)는 신호증폭부(3)를 통해 유입된 엔진오일 열화감지부(1)의 출력전압을 이용하여 오일의 유전율과 저항을 예측하게되고, 그 예측된 유전율과 저항이 도 4 및 도 5 에 도시된 바와같이 교환시기에 도달한 오일의 유전율과 저항에 근접할 경우 교환시기에 도달했음을 알리는 신호를 출력한다.The exchange time determination unit 4 predicts the permittivity and resistance of the oil by using the output voltage of the engine oil deterioration detection unit 1 introduced through the signal amplifier 3, and the predicted permittivity and resistance As shown in FIGS. 4 and 5, when the permittivity and resistance of the oil that have reached the replacement time are close to each other, a signal indicating that the replacement time is reached is output.

상기 교환시기 결정부(4)에서 출력된 신호에 의해 운전석의 계기판상에 설치되어 있는 표시부(5)가 점등되어 운전자에게 오일의 교환시기를 알려주게되므로서, 운전자가 신속히 오일을 교환하여 오일의 열화에 의한 엔진의 마찰부품 마모 및 엔진 수명저하의 피해를 방지할 수 있게되는 것이다. The display unit 5 installed on the instrument panel of the driver's seat lights up by the signal outputted from the replacement time determining unit 4, thereby informing the driver of the oil replacement time. It is possible to prevent the damage of the engine friction parts wear and engine life due to deterioration.

이상에서 설명한 바와같이 본 발명은 오일팬 내부에 설치되어 오일의 유전율과 저항을 감지하는 수단을 구비하고, 상기 감지된 오일의 유전율과 저항정보를 토대로 오일의 교환시기를 결정하는 수단 및 상기 결정된 오일교환시기를 운전자에게 경보하는 수단으로 구성하므로서, 적절한 시기에 엔진오일을 교체할 수 있음에 따라 오일열화로 인한 엔진의 고장 및 오작동 등을 방지할 수 있고, 운전자가 직접 엔진룸을 열고 오일게이지로서 찍어서 오일의 상태를 점검하지 않아도 되므로 사용상 편리함을 제공하며, 과학적인 전자장치에 의해 오일교환시기를 알려줌에 따라 차량의 상품성이 향상되고 불필요한 오일교환을 억제하여 환경보호에 이바지할 수 있도록 한 엔진오일 열화감지 및 경보장치를 제공하는 효과를 기대할 수 있다.As described above, the present invention includes a means installed in the oil pan to detect the permittivity and resistance of the oil, the means for determining the oil exchange time based on the detected permittivity and resistance information of the oil and the determined oil. By configuring the replacement time as a means of alerting the driver, it is possible to replace the engine oil at the appropriate time, thereby preventing engine failure and malfunction due to oil deterioration. It is convenient to use because it does not have to check the oil condition by dipping, and it provides the convenience of use. The engine oil that improves the merchandise of the vehicle and helps to protect the environment by suppressing unnecessary oil change by notifying the oil change time by scientific electronic devices. The effect of providing degradation detection and alarm devices can be expected.

Claims (2)

유리기판(11)의 상면에 Cu/Au/Cr의 3단 전극구조를 갖는 알루미늄 전극(12)이 형성되고, 상기 전극(12)의 상측으로 폴리머(13)가 형성되며, 상기 알루미늄 전극(12)에는 병렬로 저항(Rs)과 콘덴서(Cs)가 연결되되, 오일팬 내부에 장착되어 오일의 유전율(오일산화에 의한 화학적 변화량)과 전기 전도도(오일의 기계적 마모에 의한 저항 변화량)를 감지하여 오일의 유전율 변화량과 저항 변화량에 의해 출력전압이 가변되는 형태로 출력신호를 출력하는 엔진오일 열화감지부(1)와;An aluminum electrode 12 having a three-stage electrode structure of Cu / Au / Cr is formed on the upper surface of the glass substrate 11, a polymer 13 is formed on the electrode 12, and the aluminum electrode 12 is formed. ) Is connected in parallel with resistor (Rs) and condenser (Cs), and is mounted inside the oil pan to detect the dielectric constant of oil (chemical change due to oil oxidation) and electrical conductivity (resistance change due to mechanical wear of oil). An engine oil deterioration detecting unit (1) for outputting an output signal in a form in which an output voltage is changed by an amount of change in dielectric constant and a change in resistance of oil; 상기 엔진오일 열화감지부(1)를 구동시키는 구동회로부(2)와;A driving circuit unit 2 for driving the engine oil deterioration detecting unit 1; 상기 엔진오일 열화감지부(1)의 출력신호를 일정치 증폭하는 신호증폭부(3)와;A signal amplifier (3) for amplifying the output signal of the engine oil degradation detector (1) at a constant value; 상기 신호증폭부(3)를 통해 입력되는 엔진오일 열화감지부(1)의 감지정보를 토대로 오일의 유전율과 저항을 예측하고, 그 예측된 유전율과 저항이 교환시기에 도달한 오일의 유전율과 저항에 근접하는지 판단하여 교환시기를 결정하는 교환시기 결정부(4)와;The dielectric constant and resistance of the oil are predicted based on the detection information of the engine oil deterioration detecting unit 1 input through the signal amplifier 3, and the dielectric constant and resistance of the oil whose predicted dielectric constant and resistance have reached an exchange time. An exchange time determination unit (4) for determining an exchange time by determining whether the signal is close to the frame; 상기 교환시기 결정부(4)의 결정신호를 운전자에게 경보하여주는 표시부(5); 로 구성된 것을 특징으로 하는 엔진오일 열화감지 및 경보장치.A display unit (5) for alerting the driver of the determination signal of the exchange time determination unit (4); Engine oil degradation detection and alarm device, characterized in that consisting of. 삭제delete
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KR100865536B1 (en) * 2005-04-13 2008-10-29 주식회사 에스티앤아이 Carbon nanotube sensor and apparatus and method for detecting change time of engine oil for automobile using the same
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JP2001041918A (en) * 1999-08-03 2001-02-16 Honda Motor Co Ltd Apparatus for detecting gaseous concentration of oil
KR100331720B1 (en) * 1999-09-27 2002-04-09 정명세 Coil-type Sensor for Measuring Deterioration of Car Engine Oil

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001041918A (en) * 1999-08-03 2001-02-16 Honda Motor Co Ltd Apparatus for detecting gaseous concentration of oil
KR100331720B1 (en) * 1999-09-27 2002-04-09 정명세 Coil-type Sensor for Measuring Deterioration of Car Engine Oil

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