Direct injection pump control for low fuel pumping volumes
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United States of America Patent
Stats
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Jan 23, 2018
Issued Date -
N/A
app pub date -
May 21, 2014
filing date -
May 21, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. A control strategy is needed to operate the direct injection fuel pump when small fractional trapping volumes are commanded, wherein a small amount of fuel is compressed and sent to the direct injection fuel rail. To maintain reliable and repeatable solenoid spill valve behavior for small fractional trapping volumes, methods are proposed that involve energizing the solenoid spill valve for a minimum angular duration below a trapping volume fraction threshold.
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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
- 2 Citation Count
- F02M Class
- 21.60 % this patent is cited more than
- 7 Age
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