Method and Device for Determining a Fuel Portion in a Motor Oil of a Motor Vehicle
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Accused Products
Abstract
A method and device for determining a fuel portion in a motor oil of a motor vehicle. The motor oil is brought between at least two electrodes forming a capacitor. The capacitance of the capacitor is determined while the motor oil is located between the electrodes, and the fuel portion in the motor oil is determined from the capacitance of the capacitor.
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Citations
39 Claims
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1-18. -18. (canceled)
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19. A method for determining a fuel portion in an engine oil of a motor vehicle, comprising:
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introducing the engine oil between at least two electrodes that form a capacitor; determining a capacitance of the capacitor while the engine oil is present between the at least two electrodes; determining the fuel portion in the engine oil based on the capacitance of the capacitor; applying alternating voltages of different frequencies to the at least two electrodes; determining an impedance of the capacitor for each respective frequency; and identifying a type of fuel present in the engine oil based on the determined impedance values. - View Dependent Claims (20, 21, 22, 23, 24, 25, 33, 37)
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26. A device for determining a fuel portion in an engine oil of a motor vehicle, comprising:
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at least two electrodes configured to form a capacitor and have the engine oil placed therebetween; a voltage supply configured to provided alternating voltages of different frequencies to the at least two electrodes; and an evaluation device coupled to the at least two electrodes configured to determine; a capacitance of the capacitor while the engine oil is located between the electrodes, the fuel portion in the engine oil based on the capacitance of the capacitor, an impedance of the capacitor for each of the alternating voltages of different frequencies, and a type of the fuel present in the engine oil based at least in part on the impedance values. - View Dependent Claims (27, 28, 29, 30, 31, 32, 38)
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34. A device for determining a fuel portion in an engine oil of a motor vehicle, comprising:
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a first terminal plate; a second terminal plate substantially parallel and spaced apart from the first electrode plate; a plurality of first electrodes arranged parallel to and spaced apart from one another extending from the first terminal plate towards the second terminal plate; a plurality of second electrodes extending from the second terminal plate towards the first terminal plate, the plural second electrodes arranged parallel to and spaced apart from the plural first electrodes; a voltage supply configured to provided alternating voltages of different frequencies to the first and the second terminal plates; and an evaluation device coupled to the first and the second terminal plates configured to determine; a capacitance between the plural first and second electrodes while the engine oil is located between the plural first and second electrodes, the fuel portion in the engine oil based on the capacitance, an impedance of the capacitor for each of the alternating voltages of different frequencies, and a type of the fuel present in the engine oil based at least in part on the impedance values. - View Dependent Claims (35, 36, 39)
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Specification