Patent ID: 9555788
Date: 2017-01-31
CPC Classifications: B60T

Claim:
1. A motor vehicle, comprising: multiple wheels, each having at least one assigned hydraulically actuatable brake; a first and a second hydraulic braking circuit for actuating the brakes, each of said first and second hydraulic braking circuits comprising multiple valves for modulating a braking pressure in the first and second hydraulic braking circuits, the multiple valves of each of the first and second hydraulic braking circuits together forming a valve assembly; a first control device operably connected with and separately controlling the multiple valves of each of the two hydraulic braking circuits; a third and a fourth hydraulic braking circuit, each of said third and fourth braking circuits comprising multiple valves for modulating a braking pressure in the third and fourth hydraulic braking circuits, the multiple valves of each of the third and fourth hydraulic braking circuits together forming a further valve assembly; a second control device operably connected with and separately controlling the multiple valves of each of the third and fourth hydraulic braking circuits; a brake booster, operably connectable to the first and second hydraulic braking circuits and the third and fourth hydraulic braking circuits; and a valve unit arranged downstream of the brake booster, and in response to a malfunction of one or both of the first and/or the second braking circuits being switchable from a first position in which it connects the valve assembly of the first and second hydraulic braking circuits to the brake booster, into a second position in which it connects the further valve assembly of the third and fourth separate hydraulic braking circuits to the brake booster, wherein the valve unit is an electrically controllable multi-way valve.