Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1995-06-05
1997-02-25
Ballato, Josie
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
25112902, 25112907, F16K 3106, B60T 836, F15B 13044, F15B 912
Patent
active
056053860
ABSTRACT:
This invention achieves a setting of a reduced flow area which is active after a closed position of the valve. The solenoid valve has a seat valve with a closing element which is surrounded with a clearance by a hollow cylindrical shoulder. Formed in a valve body provided with the valve seat of the seat valve is an annular channel into which the shoulder engages with a slight radial gap in the closed position of the valve. On the outlet side of the seat valve, the pressure fluid channel leads to the two end faces of a magnet armature which actuates the seat valve. Given a pressure gradient between the pressure fluid inlet and the pressure fluid outlet, after a closed position of the solenoid valve the seat valve is capable of assuming a partly open position, since valve opening forces are compensated by pressure disequilibrium at the magnet armature. The valve can be used in slip-controlled hydraulic brake systems of motor vehicles.
REFERENCES:
patent: 5076538 (1991-12-01), Mohr et al.
patent: 5401087 (1995-03-01), Goosens
patent: 5476243 (1995-12-01), Oehler et al.
Holzgrefe Volker
Mittwollen Norbert
Ziegler Ewald
Ballato Josie
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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