Electronic oil pump
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
Dec 20, 2013
filing date -
Sep 30, 2009
priority date (Note) -
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Abstract
A method of controlling an engine includes the steps of: applying a current to the electromagnetic coil to move the at least one piston from the fully retracted position toward the full stroke position; sending a signal to an electronic control unit (ECU) when the at least one piston reaches the full stroke position; determining a time taken to reach the full stroke position from the fully retracted position based on the signal; determining a power-on time based on the determined time taken to reach the full stroke position from the fully retracted position; and returning the at least one piston to the fully retracted position by stopping to apply the current to the electromagnetic coil once the power-on time has elapsed.
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