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KR20050081563A - Sensor for detecting engine oil deterioration using difference of engine oil condition at high and low temperature - Google Patents

Sensor for detecting engine oil deterioration using difference of engine oil condition at high and low temperature Download PDF

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KR20050081563A
KR20050081563A KR1020040009872A KR20040009872A KR20050081563A KR 20050081563 A KR20050081563 A KR 20050081563A KR 1020040009872 A KR1020040009872 A KR 1020040009872A KR 20040009872 A KR20040009872 A KR 20040009872A KR 20050081563 A KR20050081563 A KR 20050081563A
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engine oil
engine
oil
state
difference
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김형표
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김형표
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/12—Thermometers specially adapted for specific purposes combined with sampling devices for measuring temperatures of samples of materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
    • G01N25/24—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures using combustion tubes, e.g. for microanalysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/58—Investigating or analyzing materials by the use of thermal means by investigating moisture content by measuring changes of properties of the material due to heat, cold or expansion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/024—Engine oil temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/022—Liquids
    • G01N2291/0226—Oils, e.g. engine oils

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Combustion & Propulsion (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

본 발명은 자동차 엔진오일의 엔진오일 상태와 엔진오일 온도를 측정하여 고온과 저온에서의 엔진오일 상태 차이로 엔진오일의 열화를 파악하여 운전자에게 제공하는 엔진오일 열화 감지 센서에 관한 것이다.The present invention relates to an engine oil deterioration detection sensor which measures engine oil state and engine oil temperature of an automobile engine oil, detects engine oil deterioration due to a difference in engine oil state at high and low temperatures, and provides the driver with a driver.

이를 위하여 본 발명은 엔진오일의 고온과 저온에서 성능을 향상시키기는 첨가제가 자동차 주행거리가 길어지면 고갈되어 고온과 저온에서의 성능에 차이가 발생한다. 이에 따른 엔진이 시동되거나 정지된 뒤의 오일상태 데이터와 엔진이 시동되거나 정지된 뒤 일정시간 경과 후의 오일상태 데이터와 비교한 차이를 분석하면 엔진오일의 열화 상태를 파악할 수 있다. To this end, the present invention is depleted when the vehicle driving distance is long, the additive to improve the performance at high and low temperatures of the engine oil occurs a difference in performance at high and low temperatures. Accordingly, by analyzing the difference between the oil state data after the engine is started or stopped and the oil state data after a certain time since the engine is started or stopped, the deterioration state of the engine oil can be determined.

Description

엔진오일 상태의 고온과 저온에서 차이를 이용한 엔진오일 열화 감지 센서 {Sensor for detecting engine oil deterioration using difference of engine oil condition at high and low temperature}Sensor for detecting engine oil deterioration using difference of engine oil condition at high and low temperature}

본 발명은 고온과 저온에서 엔진오일 상태의 차이를 이용한 엔진오일 열화 감지 센서에 관한 것으로서, 보다 상세하게는 엔진오일의 온도차에 대한 성능 차이를 측정하여 엔진오일의 교체시기를 파악하는 센서에 관한 것이다.The present invention relates to a sensor for detecting engine oil deterioration using a difference between engine oil conditions at high and low temperatures, and more particularly, to a sensor for determining an engine oil replacement time by measuring a performance difference with respect to a temperature difference between engine oils. .

자동차의 엔진오일은 엔진의 마찰 부분에서 발생하는 마찰이나 마모를 감소시켜 엔진의 마모에 의한 동력 손실방지뿐만 아니라, 냉각작용, 세정작용, 충격방지, 진동방지, 밀폐작용 및 부식방지 등의 역할을 한다.The engine oil of the automobile reduces the friction or wear occurring in the friction part of the engine to prevent power loss due to engine wear, as well as cooling, cleaning, shock, vibration, sealing and corrosion. do.

일반적으로, 적절한 시기에 자동차 엔진오일을 교환해 주는 것은 엔진 성능을 최대로 유지하여 고장의 예방과 수명의 증대뿐만 아니라, 불필요한 엔진오일의 교환을 줄여서 비용을 절감하고, 폐오일에 의한 환경오염을 감소시킨다.In general, changing the engine oil at the appropriate time will not only prevent engine failure and increase the service life by maintaining the engine performance to the maximum, but also reduce the cost of replacing unnecessary engine oil and reduce the environmental pollution caused by waste oil. Decrease.

종래에는 엔진오일 열화 측정 방법으로 광, 전산가(total acid number), 전기전도도, 정전용량, 임피던스, 열전달률 등을 이용하는 방법이 연구되었으나, 엔진오일의 종류에 따라 출력에 큰 차이가 발생되어 엔진오일 종류에 따라 센서를 교정해야 하는 문제점이 있다.Conventionally, light, total acid number, electrical conductivity, capacitance, impedance, heat transfer rate, etc. have been studied as a method for measuring engine oil deterioration. There is a problem that the sensor must be calibrated according to the type.

본 발명의 목적은 상기와 같은 종래 기술의 문제점을 해결하기 위하여, 자동차의 엔진오일을 저장하는 오일팬에 오일상태센서를 설치하여 오일상태센서 데이터의 고온과 저온에서의 차이를 측정함으로서 엔진오일의 열화 상태를 파악하여 운전자에게 제공하는 데 있다.An object of the present invention is to solve the problems of the prior art, by installing an oil condition sensor in the oil pan for storing the engine oil of the vehicle by measuring the difference in the high and low temperature of the oil state sensor data of the engine oil It is to identify the deterioration state and provide it to the driver.

엔진오일에는 고온과 저온에서 성능을 향상시키기는 첨가제가 포함되어 있다. 첨가제는 자동차 주행거리가 길어지면 고갈된다. 첨가제가 고갈되면 엔진오일은 열화가 되어 고온과 저온에서의 성능에 차이가 발생한다. 엔진오일 온도는 엔진이 정지하여 엔진이 냉각될 때는 고온에서 저온으로 바뀌고, 엔진이 시동하여 엔진이 가열될 때는 저온에서 고온으로 바뀐다. 엔진이 시동되거나 정지된 뒤의 오일상태센서(전기전도도, 정전용량, 임피던스, 열전달률)의 데이터와 엔진이 시동되거나 정지된 뒤 일정시간 경과 후의 오일상태센서의 데이터와 비교한 차이를 분석하면 엔진오일의 열화 상태를 파악할 수 있다. Engine oils contain additives that improve performance at high and low temperatures. The additive is depleted as the vehicle travels longer. Engine additives deteriorate when additives are depleted, resulting in differences in performance at high and low temperatures. The engine oil temperature is changed from high temperature to low temperature when the engine is stopped and the engine is cooled, and from low temperature to high temperature when the engine is started and the engine is heated. Analyzing the difference between the data of the oil condition sensor (electric conductivity, capacitance, impedance, heat transfer rate) after the engine is started or stopped and the data of the oil condition sensor after a certain time since the engine is started or stopped, the engine is analyzed. Understand the deterioration of the oil.

이와 같은 목적을 달성하기 위하여 엔진오일 상태(전기전도도, 정전용량, 임피던스, 열전달률)를 측정하는 오일상태센서, 엔진오일 온도를 측정하는 온도센서, 엔진 시동/정지 후 시간을 계수하는 타이머, 엔진 시동/정지 신호를 제공하는 시동/정지 신호부, 오일상태센서 데이터와 엔진오일 온도와 시동/정지 신호를 종합 분석하여 엔진오일 열화 상태를 파악하는 신호처리부로 이루어진 것에 특징이 있다. To achieve this goal, the oil condition sensor measures the engine oil condition (electric conductivity, capacitance, impedance, heat transfer rate), the temperature sensor measures the engine oil temperature, the timer counts the time after engine start / stop, and the engine. It is characterized by consisting of a start / stop signal unit for providing a start / stop signal, a signal processing unit to determine the engine oil deterioration state by comprehensively analyzing the oil state sensor data and engine oil temperature and start / stop signal.

이하 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.

도 1은 엔진오일 상태와 엔진오일 온도를 측정하여 엔진오일 열화 상태를 파악하여 운전자에게 제공하는 엔진오일 열화 감지 센서의 블록도이다. 먼저, 자동차 엔진오일을 저장하는 오일팬에 설치된 오일상태센서(1)는 오일상태를 측정하여 신호처리부(4)에 전송한다. 온도센서(2)는 엔진오일 온도를 측정하여 신호처리부(4)로 전송한다. 엔진 시동/정지 신호부(5)는 엔진의 시동과 정지 여부를 검출하여 신호처리부(4)에 전송한다. 타이머(3)는 엔진이 시동/정지된 후의 경과시간을 계수하여 신호처리부(4)에 전송한다. 신호처리부(4)는 오일상태센서 데이터와 타이머 시간과 엔진오일 온도 신호와 엔진 시동/정지 신호를 도 2의 흐름도에 따라 엔진오일 열화 상태를 파악하여 표시부(6)에 전송한다. 표시부(6)는 신호처리부(4)에 따라 엔진오일 교환 표시등, 경고음, 문자로 운전자에게 제공한다.1 is a block diagram of an engine oil deterioration detection sensor which measures an engine oil state and an engine oil temperature to identify an engine oil deterioration state and provide the driver with the driver. First, the oil state sensor 1 installed in an oil pan storing automobile engine oil measures the oil state and transmits the oil state to the signal processor 4. The temperature sensor 2 measures the engine oil temperature and transmits it to the signal processor 4. The engine start / stop signal unit 5 detects whether the engine is started and stopped and transmits it to the signal processing unit 4. The timer 3 counts the elapsed time after the engine is started / stopped and transmits it to the signal processor 4. The signal processor 4 grasps the oil state sensor data, the timer time, the engine oil temperature signal, and the engine start / stop signal according to the flowchart of FIG. 2 and transmits the engine oil deterioration state to the display unit 6. The display unit 6 provides the driver with an engine oil change indicator, a warning sound and a text in accordance with the signal processor 4.

도 2는 고온과 저온에서 오일상태센서 데이터 변화를 이용하여 엔진오일 열화를 판별하는 흐름도이다. 먼저 엔진의 시동/정지 신호(S1)를 입력하여 엔진이 시동되거나 정지된 후 엔진오일 온도 측정과 타이머 계수를 시작(S2)하고 엔진오일 상태 데이터와 엔진오일 온도 데이터를 신호처리부에 입력한다(S3). 신호처리부(4)는 입력받은 엔진오일 온도와 설정 온도의 동일 여부를 판별(S4)하여 다르면 일정시간 대기(S7)후 다시 오일 상태와 온도 데이터를 입력(S3)받고 동일하면 오일 상태 데이터의 고온과 저온에서의 차이를 설정값과 비교(S5)한다. 신호처리부(4)는 오일 상태 데이터의 고온과 저온에서의 차이가 설정값보다 크면 엔진오일 열화를 알리는 경보 신호를 표시부에 출력(S6)하고 작으면 엔진오일 정상을 알리는 신호를 표시부에 출력(S8)한다.2 is a flowchart for determining engine oil deterioration by using oil state sensor data changes at high and low temperatures. First, the engine is started or stopped by inputting the engine start / stop signal S1 to start engine oil temperature measurement and timer counting (S2), and input the engine oil state data and engine oil temperature data to the signal processor (S3). ). The signal processor 4 determines whether the input engine oil temperature and the set temperature are the same (S4), and if different, waits for a predetermined time (S7) and receives the oil state and temperature data again (S3). The difference between the low temperature and the low temperature is compared with the set value (S5). The signal processing unit 4 outputs an alarm signal indicating an engine oil deterioration on the display unit (S6) when the difference between the high and low temperatures of the oil state data is greater than the set value (S6), and outputs a signal indicating the engine oil normal state on the display unit (S8). )do.

이상에서 상술한 바와 같이 본 발명은, 엔진오일의 고온과 저온에서의 엔진오일상태센서 데이터의 차이를 비교하여 엔진오일의 열화 여부를 판별하여 운전자에게 적절한 엔진오일 교환시기를 알려줌으로써 엔진의 고장예방과 자동차의 수명을 늘리고 자원의 낭비를 방지하고 폐오일에 의한 환경오염을 줄이는 효과가 있다.As described above, the present invention compares the difference between the engine oil condition sensor data at high and low temperatures of the engine oil, determines whether the engine oil is deteriorated, and informs the driver of an appropriate engine oil replacement time to prevent engine failure. It has the effect of extending the life of automobiles and automobiles, preventing waste of resources and reducing environmental pollution caused by waste oil.

도1은 온도차를 두고 측정한 데이터를 이용하여 엔진오일 열화를 판별하는 감지 센서의 블록도.1 is a block diagram of a sensor for determining engine oil deterioration using data measured with a temperature difference.

도2는 온도차를 두고 측정한 데이터를 이용하여 엔진오일 열화를 판별하는 흐름도.2 is a flowchart for determining engine oil deterioration using data measured with a temperature difference.

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

1 : 오일상태센서 2 : 온도센서1: Oil condition sensor 2: Temperature sensor

3 : 타이머 4 : 신호처리부3: timer 4: signal processor

5 : 엔진 시동/정지 신호부 6 : 표시부5: engine start / stop signal part 6: display part

Claims (3)

엔진오일의 상태를 측정하는 오일상태센서(1)와; 엔진오일의 온도를 측정하는 온도센서(2)와; 엔진 시동/정지 후 경과시간을 계수하는 타이머(3)와; 엔진의 시동/정지 신호부(5)와; 엔진오일의 고온과 저온에서의 엔진오일상태 데이터의 차이로 엔진오일의 열화 상태를 판단하여 표시부(6)에 출력하는 신호처리부(4)로 구성한 것을 특징으로 하는 엔진오일 열화 감지 장치.An oil state sensor 1 for measuring a state of the engine oil; A temperature sensor 2 for measuring the temperature of the engine oil; A timer 3 for counting an elapsed time after engine start / stop; An engine start / stop signal section 5; An engine oil deterioration detecting apparatus comprising: a signal processor (4) for determining a deterioration state of engine oil based on a difference between engine oil state data at high and low temperatures of the engine oil and outputting the deteriorated state to the display unit (6). 엔진이 시동되거나 정지된 후 엔진오일 온도를 측정하여 엔진오일 온도의 고온과 저온에서 엔진오일 상태의 차이로 엔진오일의 열화 상태를 판단하는 방법.Method for determining the deterioration state of the engine oil by measuring the engine oil temperature after the engine is started or stopped by the difference between the engine oil state at high and low temperatures of the engine oil temperature. 엔진이 시동되거나 정지된 후 시간을 계수하여 엔진오일 온도의 고온과 저온에서 엔진오일 상태의 차이로 엔진오일의 열화 상태를 판단하는 방법.A method of determining the deterioration state of engine oil by counting the time after the engine is started or stopped by the difference between the engine oil state at high and low temperatures of the engine oil temperature.
KR1020040009872A 2004-02-14 2004-02-14 Sensor for detecting engine oil deterioration using difference of engine oil condition at high and low temperature Ceased KR20050081563A (en)

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