| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fuel supply device capable of bringing a fuel pump under flow rate control according to secular change.SOLUTION: A fuel supply device has a valve in a fuel passage between a fuel pump and an engine. Storage means of an ECU stores a relation between fuel pressure and a flow rate required for the engine, and a voltage supplied to a motor. The ECU detects voltages V26, V27, and V28 supplied from a controller to the motor at valve opening time from change points C1', C2', and C3' at which characteristics of the voltage and current supplied to the motor change. Then the ECU corrects the voltages stored in the storage means on the basis of differences between voltages V1, V2, and V5 stored in the storage means at the change points C1, C2, and C3 and the voltages V26, V27, and V28 at the valve opening time. Consequently, the fuel supply device can perform accurate motor control corresponding to the fuel pressure and flow rate required for the engine without including any fuel pressure sensor.</p> |
