| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of preventing a wrong diagnosis of abnormality due to noise.SOLUTION: The fuel injection control device includes: a voltage source for supplying a voltage to a load for fuel injection of an internal combustion engine; a current control circuit which is arranged on a side of a high-side of the load, is interposed between the voltage source and the load, and controls a current to be supplied to the load; a current detection circuit for detecting a current value of the current flowing in at least one of both ends of the load; and a control part for controlling the current control circuit so that a predetermined voltage is supplied to the load. The control part has a terminal voltage detection part for detecting a terminal voltage on the side of the high-side of the load, and a terminal current detection part for detecting a terminal current detected by the current detection circuit. The control part determines occurrence of abnormality on the basis of the fact that the terminal voltage is not lower than a predetermined threshold value and the terminal current is not lower than a predetermined threshold current.SELECTED DRAWING: Figure 1 |
