Valve device for a hydraulic circuit and oil pump control apparatus
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United States of America Patent
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Oct 31, 2017
Issued Date -
N/A
app pub date -
Jan 10, 2014
filing date -
Feb 1, 2013
priority date (Note) -
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Abstract
A valve device for a hydraulic circuit includes an actuator unit comprising an electromagnetic circuit which comprises an armature, a core, a coil carrier, a coil, and a flux guiding device. A valve unit comprises a unit formed by a valve tappet and the armature, inlet and outlet ports, and a control port arranged between the inlet and outlet ports. A longitudinal through bore is arranged in the unit to extend from the inlet port into an actuator chamber. A first control body cooperating with a first valve seat and a second control body cooperating with a second valve seat are arranged at the unit in which the longitudinal through bore is formed. The armature and the valve tappet are loaded in an opening direction of the inlet valve by a spring element and are loadable in an opening direction of the outlet port by energizing the electromagnetic circuit.
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