CONTROL DEVICE FOR HIGH-PRESSURE PUMP

摘要

A high-pressure pump includes a plunger reciprocating in conjunction with rotation of a rotational shaft to be able to change a volume of a pressurizing chamber and a control valve having a first valve body and a second valve body disposed in a fuel suction passage that communicates with the pressurizing chamber and supplies/blocks fuel to/from the pressurizing chamber by displacing the valve body in an axial direction by switching between energization and non-energization of a coil. An ECU adjusts a fuel discharge amount of the high-pressure pump by switching a valve opening and a valve closing of the control valve by the energization control of the coil. The ECU detects movement of the valve body with respect to a drive command of the valve opening or the valve closing of the control valve and executes an actuation determination of the high-pressure pump on the basis of a detection result.

主权项

1. A control device for a high-pressure pump that is applied to a high-pressure pump including: a plunger that reciprocates in conjunction with rotation of a rotational shaft so as to be able to change a volume of a pressurizing chamber; and a control valve that has a valve body disposed in a fuel suction passage that communicates with the pressurizing chamber and supplies/blocks fuel to/from the pressurizing chamber by displacing the valve body in an axial direction by energization control with respect to an electromagnetic section, and the control device for the high-pressure pump adjusting a fuel discharge amount of the high-pressure pump by switching a valve opening and a valve closing of the control valve by the energization control, the control device for the high-pressure pump comprising:
a movement detection section detecting movement of the valve body with respect to a drive command of the valve opening or the valve closing of the control valve; and an actuation determination section making an actuation determination of the high-pressure pump on the basis of a detection result of the movement detection section.