Oil degradation warning system
AssigneeNissan Motor Co., Ltd.
InventorsMinoru Imajo, Tsunehiro Kawakita
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Abstract
Herein disclosed is an oil degradation warning system for an engine equipped with a turbocharger. The system comprises first means for detecting the temperature of the engine oil in the turbocharger, second means for deriving a correction coefficient from informations issued from the first means; third means for multiplying a predetermined time increment by the correction coefficient to derive a modified time increment; fourth means for integrating the modified time increment to derive a time dependent oil degradation value; and fifth means for issuing a warning when the time dependent oil degradation value becomes equal to or larger than a predetermined value.
Claims6
An oil degradation waning system for an engine equipped with a turbocharger, comprising:
- first means for detecting the temperature of an engine oil which flows through said turbocharger;
- second means for deriving a correction coefficient from informations issued from said first means;
- third means for multiplying, a predetermined time increment by said correction coefficient thereby to derive a modified time increment;
- fourth means for integrating said modified time increment thereby to derive a time dependent oil degradation value;
- and
- fifth means for issuing a warning when said time dependent oil degradation value becomes equal to or larger than a predetermined value.
Dependencies are inferred from the claim text.