| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel supply control device reducing an influence of disturbance in feedback control and stably controlling fuel pressure. Ž<P>SOLUTION: A common rail accumulates fuel supplied from a high-pressure pump, and a fuel injection valve injects the fuel to an engine. A solenoid flow rate control valve controls fuel pressure in the common rail or a fuel flow rate led to flow into/out from the common rail. An observer 120 calculates state quantities of estimated fuel pressure and estimated pump required flow rate. A sliding mode control section 140 controls the solenoid flow rate control valve in an object portion to be controlled 101 by the feedback control (sliding mode control) based on the state quantities calculated by the observer 120. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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