Pressure Reduction Control Functions

ABS Pressure Reduction Control Mode
The ABS control module derives the pressure reduction phase from the wheel Weds and sill; values. The pressure reduction phase is introduced by actuating (opening) the solenoid valves (y7, y9 and y21). The solenoid valves (y6, y8 and y2O) remain actuated (closed) in this control phase.

During the pressure reduction phase, brake fluid flows back into the return pump (m1) via the accumulator (11). From there, the return pump delivers the brake fluid in both circuits back to the master brake cylinder against the existing pressure.

There is a silencer (10) in each brake circuit to damp the delivery noise.