PWM회로를 이용한 엔진오일의 전기전도도와 정전용량을 분석한 열화감지 방법 연구 = The Study of Engine Oil Analysing Deterioration Sensing Method for Resistance and Capacitance by using PWM Circuit

다국어 초록 (Multilingual Abstract)

Most engine oil consumption today as to increasing of a car imposes a heavy burden on time and economics to consumer. If drivers search for exchange oil at proper time, it will be a great help to economy of resources and reduce pollution. The ingredient of engine oil was deteriorated that primary cause to be the oxidation in air and making progress oxidation varies with temperature, catalyst, additive and type of engine oil. This paper analyzes interrelation of the conductivity and capacitance at appropriate temperature measurement in engine oil. When measuring the capacitance in existing semiconductor form, the various metal sludge precipitation or solidification in the oil which sticks to the sensor in order to protect the corrosion of electrode becoming the corrosion with deposited nitride because of the engine oil oxidizes, it protected the electrode of the sensor. It measure the signal of the sensor with PWM(Pulse Width Modulation) circuit and conductivity circuit. It confirms the deterioration sensing method which is caused by the contamination and oxidation of engine oil that it informs appropriate period engine oil exchange to driver. M

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 실험장치 및 방법
• Ⅲ. 실험결과
• Ⅳ. 결론