CONTROL DEVICE FOR HIGH-PRESSURE PUMP
First Claim
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.
1 Assignment
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Accused Products
Abstract
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.
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Citations
11 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 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
Specification