Electromagnetically actuated valve for slip-controlled hydraulic

Details Electromagnetically actuated valve for slip-controlled hydraulic Electromagnetically actuated valve for slip-controlled hydraulic

1995-06-05

1997-05-20

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Including solenoid

13759617, 13762565, 3031192, F16K 3106

Patent

active

056305699

ABSTRACT:
An electromagnetically actuated valve which achieves the setting of a reduced cross section of flow following a closed position of the valve. The solenoid valve has a seat valve which is surrounded by a sleeve which is secured pressure-tightly on a valve body. In the closed position of the seat valve, a tappet engages in the sleeve, forming a small radial gap. From the interior of the sleeve, a first pressure-medium passage leads to an end face of a magnet armature, said end face being remote from the seat valve. Outside the sleeve, a second pressure-medium passage leads to that end face of the magnet armature which is close to the seat valve. In the case of a pressure drop between the pressure-medium inlet and the pressure-medium outlet of the solenoid valve, the seat valve can assume a partially open position following a closed position of said valve since, due to the gap, which acts as a restriction, a pressure disequilibrium arises at the magnet armature and valve opening forces are compensated. The valve can be employed in slip-controlled hydraulic brake systems of motor vehicles.

REFERENCES:
patent: 4714089 (1987-12-01), Ueda et al.
patent: 5076538 (1991-12-01), Mohr
patent: 5102095 (1992-04-01), Schmitt-Matzen
patent: 5269490 (1993-12-01), Fujikawa et al.

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