Engine variable oil pump diagnostic method
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United States of America Patent
Stats
-
Dec 15, 2020
Grant Date -
Apr 25, 2019
app pub date -
Oct 24, 2017
filing date -
Oct 24, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods and systems are provided for indicating degradation of a variable displacement oil pump. In one example, an engine method comprises indicating degradation of the oil pump based on a fuel usage change of the engine, responsive to a commanded change in displacement of the variable oil pump. In response to an indicated degradation, engine wear may be avoided and fuel economy may be improved by adjusting engine operation.
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International Classification(s)
- 2017 Application Filing Year
- F01M Class
- 386 Applications Filed
- 305 Patents Issued To-Date
- 79.02 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- F01M Class
- 0 % this patent is cited more than
- 5 Age
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 15, 2028 |
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