Pressure Holding Phase

If the braked wheel reaches the lock limit by way of hydraulic pressure from the brake master cylinder, further pressure increase in the wheel brake cylinder will be prevented. The solenoid will receive current of approx. 2 amperes, valve piston is activated and outlet as well as inlet of solenoid valve are closed. Hydraulic pressure between hydraulic unit and wheel brake cylinder remains constant.

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1 — Brake booster with tandem master cylinder

3 — Electronic control unit a — Front wheel brake b — Rear wheel brake c — Electric solenoid valve, front, right d — Electric solenoid valve, front, left e — Electric solenoid valve,rear f — Check valve g — Pump reservoir h — Return delivery pump i — Pump inlet valve k — Pump outlet valve I —Noise damper

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