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Return pump

Return pump


The return pump consists of a DC electric motor that drives a hydraulic pump. The electronic control module controls the return pump operation every time the ignition is activated and the speed increases to more than 6 km/h. The pump is activated within 200 ms, if the brake light switch is activated the test occurs at 15 km/h.

The pump unit is only activated when an outlet valve is opened and it returns excess brake to the master cylinder.

The pressure of the returning brake fluid is decided by the pressure in the master cylinder that is in turn proportional to the force applied to the brake pedal.

The pump unit capacity is approx. 250 bars, a pressure sufficient for all anticipated braking situations.

The hydraulic pump and electric motor can only be changed together with the valve block as a complete unit.