Brake Fluid Pump: Description and Operation

The hydraulic pump is integrated with the brake control modulator.
^ It is a reciprocating two-circuit pump in which one brake circuit is assigned to each pump circuit.
^ It supplies adequate pressure and volume to supply the brake circuits under anti-lock braking conditions.
^ The pump is driven by an electric motor and the pump housing incorporates two low pressure accumulators and damping chambers for each brake circuit.