Adjusting pump volume commands for direct injection fuel pumps
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United States of America Patent
Stats
-
Dec 25, 2018
Grant Date -
Dec 10, 2015
app pub date -
Jun 9, 2014
filing date -
Jun 9, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods are provided for controlling a direct injection fuel pump, wherein a solenoid spill valve is energized and de-energized according to certain conditions. A control strategy is needed to operate the direct injection fuel pump outside regions where pump operation may be variable and inaccurate, where the regions may be characterized by smaller pump commands as well as smaller displacement volumes. To maintain a suitable range of pump commands and displacements while operating outside the low accuracy regions, a method is proposed that involves clipping calculated pump commands when the calculated pump commands lie within the low accuracy regions.
First Claim
Family
International Classification(s)
- 2014 Application Filing Year
- F02M Class
- 1366 Applications Filed
- 1150 Patents Issued To-Date
- 84.19 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F02M Class
- 0 % this patent is cited more than
- 7 Age
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