| 摘要 |
Electrical measures of resistivity and permittivity of engine lubricating oil are gathered continuously under normal vehicle engine operating conditions and combined into a composite parameter, the aggregated electrical measure, which, is indicative of engine oil condition and when plotted over the useful life of the oil displays a first linear slope anticipatory of the end of oil life followed by a second, steeper slope indicative of the end of oil life. An algorithm, implementable in an on-vehicle computer, to reliably detect these features is described.
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