Apparatus, a method, and measuring sensors for scanning states of engine oil
First Claim
1. An apparatus for scanning states of engine oil, comprising:
- an oil property measuring part for measuring physical and chemical properties of engine oil;
a driving condition measuring part for measuring an engine driving condition;
a control portion where conditions of engine oil corresponding to engine driving conditions are stored as set values, for selecting a set value for a state of engine oil corresponding to the measured engine driving condition, and calculating a result value regarding a quality of engine oil on the basis of comparison of a measured value for the state of engine oil inputted from the driving condition measuring part and the set value; and
an output part for outputting a predetermined output depending on the result value;
wherein the oil property measuring part is a complex sensor comprising;
a cylindrical case having a hollow space therein;
an oil level sensor, an oil oxidation degree sensor, an oil viscosity sensor, and an oil temperature sensor installed in the case; and
a DSP for calculating values for physical and chemical properties of engine oil, on the basis of values measured by each of the sensors, whereinthe oil level sensor comprisesan input electrode having a shape of a pipe, installed in the case, and formed such that an electric current can be applied thereto, andan oil level electrode having a shape of a pipe, disposed apart from an inner surface of the input electrode, and formed to receive an electric current from the input electrode,the oil oxidation degree sensor comprisesthe input electrode, andan oil oxidation degree electrode having a shape of a pipe, disposed at a lower portion of the oil level electrode, and formed to receive an electric current applied from the input electrode,the oil viscosity sensor comprisesa piezoelectric element and a metal membrane covering the piezoelectric element, andthe oil temperature sensor is mounted to the case.
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Accused Products
Abstract
The present invention relates to an apparatus, a method, and a sensor for scanning engine oil of a vehicle. An apparatus for scanning engine oil according to an exemplary embodiment of the present invention includes an oil property measuring part for measuring physical and chemical properties of engine oil; a driving condition measuring part for measuring a engine driving condition; a control portion where predetermined values about conditions of engine oil according to engine driving conditions are stored as set values, for selecting a set value corresponding to a measured engine driving condition and calculating a result value about a quality of engine oil on the basis of comparison with a measured value determined according to an engine driving condition inputted from the driving condition measuring part and the set value; and an output part for outputting the result.
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Citations
16 Claims
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1. An apparatus for scanning states of engine oil, comprising:
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an oil property measuring part for measuring physical and chemical properties of engine oil; a driving condition measuring part for measuring an engine driving condition; a control portion where conditions of engine oil corresponding to engine driving conditions are stored as set values, for selecting a set value for a state of engine oil corresponding to the measured engine driving condition, and calculating a result value regarding a quality of engine oil on the basis of comparison of a measured value for the state of engine oil inputted from the driving condition measuring part and the set value; and an output part for outputting a predetermined output depending on the result value; wherein the oil property measuring part is a complex sensor comprising; a cylindrical case having a hollow space therein; an oil level sensor, an oil oxidation degree sensor, an oil viscosity sensor, and an oil temperature sensor installed in the case; and a DSP for calculating values for physical and chemical properties of engine oil, on the basis of values measured by each of the sensors, wherein the oil level sensor comprises an input electrode having a shape of a pipe, installed in the case, and formed such that an electric current can be applied thereto, and an oil level electrode having a shape of a pipe, disposed apart from an inner surface of the input electrode, and formed to receive an electric current from the input electrode, the oil oxidation degree sensor comprises the input electrode, and an oil oxidation degree electrode having a shape of a pipe, disposed at a lower portion of the oil level electrode, and formed to receive an electric current applied from the input electrode, the oil viscosity sensor comprises a piezoelectric element and a metal membrane covering the piezoelectric element, and the oil temperature sensor is mounted to the case. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for scanning states of engine oil, comprising:
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an oil property measuring part for measuring physical and chemical properties of engine oil; a driving condition measuring part for measuring an engine driving condition; a control portion where conditions of engine oil corresponding to engine driving conditions are stored as set values, for selecting a set value for a state of engine oil corresponding to the measured engine driving condition, and calculating a result value regarding a quality of engine oil on the basis of comparison of a measured value for the state of engine oil inputted from the driving condition measuring part and the set value; and an output part for outputting a predetermined output depending on the result value; wherein the oil property measuring part includes at least one of an oil viscosity sensor, an oil level sensor, an oil temperature sensor, and an oil oxidation degree sensor; and wherein the oil viscosity sensor comprises; a viscosity sensor case; a pipe-shaped piezoelectric element; an inside electrode mounted to the inner surface of the piezoelectric element and vertically separated therefrom; an outside electrode mounted to the exterior surface of the piezoelectric element; and a plurality of electric wires for supplying electric power to an inside electrode, wherein one part of the piezoelectric element with the outside electrode is exposed to the engine oil and the other part of the piezoelectric element with the outside electrode is exposed to air, and when an electric current is applied, the two parts of the piezoelectric element are torsionally vibrated in opposite directions to each other, and the control portion calculates a relative viscosity of engine oil on the basis of a measured damping force of air and a measured damping force of engine oil. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification