Appeal No. 2002-1620 Page 6
Application No. 09/504,416
18, 19 and 20, 21, respectively, with each one low-pressure accumulator 67 or 68,
respectively, by the intermediary of electromagnetically operable, preferably normally
closed outlet valves 51, 52, 57, 58, respectively.
Low-pressure accumulators 67, 68 are connected to the suction side of the
associated pump 43 or 44, respectively. The wheel brake pairs 18, 19 or 20, 21,
respectively, which, for example, can be associated with a vehicle axle each
(black-white brake circuit split-up) are associated with wheel sensors 63, 64, 65, 66,
the output signals of which are supplied to an electronic control unit 59 by way of signal
lines (not shown). During ABS control operations, control unit 59 produces
control or change-over signals both for the inlet valves 47, 48, 53, 54 and the outlet
valves 51, 52, 57, 58. In addition, the output signal of an acceleration sensor 62,
which can be activated in an accident, is conducted to the electronic control unit 59.
The acceleration sensor 62 takes the form of an airbag sensor serving to trigger
the airbag 61 in the embodiment shown.
In the basic or inactive position of the brake system shown in Figure 4 of Bauer,
hydraulic pressure may develop in the wheel brakes 18 to 21 by way of the normally
open inlet valves 47, 48, 53, 54. In a frontal impact or a crash which is sensed by the
acceleration or airbag sensor 62, the electronic control unit 59 produces change-over
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Last modified: November 3, 2007