Method and system for estimating engine oil life based on viscosity
First Claim
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1. A method comprising:
- determining an engine oil pressure;
determining an engine oil temperature;
determining a viscosity of engine oil based on the engine oil pressure and the engine oil temperature when the engine oil pressure is regulated;
comparing the viscosity of the engine oil to a threshold; and
generating a warning signal in response to comparing the viscosity.
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Abstract
A method and control module for indicating engine oil life includes a viscosity determination module determining a viscosity of the engine oil based on an engine oil pressure and engine oil temperature. The control system further includes a comparison module comparing the viscosity of the engine oil to a threshold and generating a warning signal in response to comparing the viscosity.
32 Citations
20 Claims
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1. A method comprising:
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determining an engine oil pressure; determining an engine oil temperature; determining a viscosity of engine oil based on the engine oil pressure and the engine oil temperature when the engine oil pressure is regulated; comparing the viscosity of the engine oil to a threshold; and generating a warning signal in response to comparing the viscosity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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determining a new oil viscosity; determining a used oil viscosity; and generating an indicator corresponding to oil life when a ratio of the used oil viscosity to the new oil viscosity is outside of a range, wherein at least one of the new oil viscosity and the used oil viscosity is determined when engine oil pressure is regulated. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A control system for indicating engine oil life comprising:
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a viscosity determination module determining a viscosity of engine oil based on an engine oil pressure and engine oil temperature when the engine oil pressure is regulated; and a comparison module comparing the viscosity of the engine oil to a threshold and generating a warning signal in response to comparing the viscosity. - View Dependent Claims (17, 18, 19, 20)
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Specification