Method and system for controlling low pressure fuel pump of gasoline direct injection engine
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United States of America Patent
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Mar 22, 2016
Grant Date -
Jun 19, 2014
app pub date -
Jul 19, 2013
filing date -
Dec 17, 2012
priority date (Note) -
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Abstract
A method of controlling a low pressure fuel pump of a gasoline direct injection (GDI) engine includes receiving failure related information of a high pressure fuel pump, boosting, if the high pressure fuel pump is failed based on the failure related information of the high pressure fuel pump, a fuel pressure of the low pressure fuel pump to a setting pressure and controlling, if the high pressure fuel pump is not failed, the fuel pressure of the low pressure fuel pump based on a measured fuel pressure with respect to a target fuel pressure of the high pressure fuel pump or a change of a control value of the GDI engine. A corresponding control system includes a fuel supply pressure controller, among other components, which is operated by a predetermined program for executing the method of controlling the low pressure fuel pump of the GDI engine.
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