Research on a Novel Electromechanical Booster Brake

With the rapid development of new-energy vehicles, the traditional vacuum brake booster no longer meets the requirements of the automobile braking system. This paper proposes a novel direct-drive and high-tracking electric brake booster system, where the hollow rotor of the booster motor is coupled with a screw to convert the motor's rotary motion into linear motion. In the structure of the new electric booster, the gear reduction mechanism or vacuum booster pump of the traditional booster is removed and the transmission link is reduced, resulting in not only a higher transmission efficiency but also a much smaller booster brake system and miniaturization of the electric booster brake system. Moreover, the structure has a redundant braking link that realizes mechanical braking in the case that the brake booster system fails. The redundant braking structure is not only highly reliable but also has a simple system structure.