Direct injection pump control for low fuel pumping volumes

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United States of America Patent

PATENT NO 9874185
SERIAL NO

14284220

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Importance

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Abstract

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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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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Meinhart, Mark South Lyon, US 38 254
Pursifull, Ross Dykstra Dearborn, US 510 6849

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