| 摘要 |
<p>Disclosed is a power-assisting device used for automobile braking, comprising a power-assisting vacuum pump. The device further comprises an air delivery tube (7) and an air pump (8). The air delivery tube (7) is provided at a front cavity (9) of the power-assisting vacuum pump, with one end in communication with the front cavity (9) of the power-assisting vacuum pump and the other end in communication with the air pump (8), such that air is delivered to the front cavity (9) of the power-assisting vacuum pump via the air pump (8) to generate a pressure difference in the process of braking, thereby achieving the effect of power-assisted braking.</p> |
