Oil deterioration sensor
First Claim
1. An oil deterioration sensor which can distinguish deterioration characteristics or a liquid surface of oil by utilizing ultrasonic waves, characterized in that a deterioration sensor reflecting surface for reflecting ultrasonic waves transmitted from an ultrasonic wave transmitting portion is placed in oil so as to detect deterioration of the oil, and comprising:
- an oil deterioration detecting portion for detecting a transmission velocity of an ultrasonic wave in the oil by receiving ultrasonic waves from said deterioration sensor reflecting surface and for determining a base number of the oil as a measure of a degree of deterioration of oil from said transmission velocity of the oil; and
an oil level detecting portion for transmitting ultrasonic waves from said ultrasonic wave transmitting portion to an air-liquid liquid surface of the oil and for detecting a height of said liquid surface by receiving ultrasonic waves from said liquid surface.
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Accused Products
Abstract
The present invention relates to a sensor for detecting the degree of deterioration of oil, and more particularly, provides an oil deterioration sensor which can detect the deterioration of oil and/or the liquid surface of oil by utilizing the fact that the sound velocity of ultrasonic waves change according to the alkalinity of the oil, the oil deterioration sensor for determining deterioration characteristics of oil by utilizing ultrasonic waves, which is characterized in that a deterioration sensor reflecting surface for reflecting ultrasonic waves transmitted from an ultrasonic wave transmitting portion is placed in oil so as to detect deterioration of the oil, and characterized by comprising: an oil deterioration detecting portion for evaluating a transmission velocity of an ultrasonic wave in the oil by receiving ultrasonic waves from the aforesaid deterioration sensor reflecting surface and for evaluating a degree of deterioration of oil from said transmission velocity of the oil.
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Citations
8 Claims
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1. An oil deterioration sensor which can distinguish deterioration characteristics or a liquid surface of oil by utilizing ultrasonic waves, characterized in that a deterioration sensor reflecting surface for reflecting ultrasonic waves transmitted from an ultrasonic wave transmitting portion is placed in oil so as to detect deterioration of the oil, and comprising:
- an oil deterioration detecting portion for detecting a transmission velocity of an ultrasonic wave in the oil by receiving ultrasonic waves from said deterioration sensor reflecting surface and for determining a base number of the oil as a measure of a degree of deterioration of oil from said transmission velocity of the oil; and
an oil level detecting portion for transmitting ultrasonic waves from said ultrasonic wave transmitting portion to an air-liquid liquid surface of the oil and for detecting a height of said liquid surface by receiving ultrasonic waves from said liquid surface. - View Dependent Claims (2, 3, 4, 5, 6)
- an oil deterioration detecting portion for detecting a transmission velocity of an ultrasonic wave in the oil by receiving ultrasonic waves from said deterioration sensor reflecting surface and for determining a base number of the oil as a measure of a degree of deterioration of oil from said transmission velocity of the oil; and
- 7. An oil deterioration sensor for determining deterioration characteristics of oil by utilizing ultrasonic waves, comprising a sensor element positioned to measure the transmission velocity of ultrasonic waves in oil by transmitting and receiving ultrasonic waves in the oil, and means for determining a base number of the oil as a measure of a degree of deterioration of the oil from the measured transmission velocity of ultrasonic waves.
Specification