| 摘要 |
An aspirator for a brake system is provided having integrated functions of a flow bypass and a check valve for automotive applications to achieve various suction flow openings in response to different engine operating condition to enhance brake boost performance. The brake system includes a brake vacuum booster, an engine having an intake manifold, an aspirator having a movable convergence nozzle, the aspirator being connected to the manifold, and a vacuum line connecting the booster to the aspirator. The aspirator includes a body having an interior end wall. A biasing element such as a spring is provided between the movable convergence nozzle and the interior end wall of the aspirator body. The body of the aspirator has an air flow path having an upstream area and a downstream area. The movable convergence nozzle is positioned in the upstream area of the flow path. |
