METHOD FOR CONTROLLING DRIVE OF FLOW CONTROL VALVE OF COMMON-RAIL FUEL INJECTION CONTROLLER AND COMMON-RAIL FUEL INJECTION CONTROLLER

摘要

When an ignition switch (11) is turned on, the initial value of integration to determine the integral value of the difference between the target current and the actual current of a flow control valve (6) is made a predetermined value used for applying the target current to the flow control valve (6) (S102, S104). For a predetermined time To after the ignition switch (11) is turned on, the integration gain K of the integration is set to a second integration gain K2 larger than a first integration gain K1 in the normal mode. After the passage of a predetermined time To, the integration gain K is set to the first integration gain K1 (S106 to S108). With this, the integration value at the start can be early stabilized, and the stability and response of rail pressure control can be improved.