- 专利标题: PRE-FILLING DEVICE FOR A BRAKING SYSTEM COMPRISING A HYDRO-BOOSTER DEVICE AND OPERATING METHOD THEREOF
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申请号: US15754432申请日: 2016-09-02
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公开(公告)号: US20190023245A1公开(公告)日: 2019-01-24
- 发明人: Leonardo Cadeddu
- 申请人: VHIT S.p.A.
- 优先权: IT102015000048535 20150904
- 国际申请: PCT/IB2016/055265 WO 20160902
- 主分类号: B60T13/14
- IPC分类号: B60T13/14 ; B60T17/04 ; B60T15/38 ; B60T15/42 ; F15B7/08 ; F16K31/122
摘要:
A pre-filling device for a braking system. The pre-filling device includes a pre-filling channel, a pre-filling pressure being inside the channel when the braking system is in a rest and hydro-boost position, and a mechanical valve configured to be opened following a transition from the rest and hydro-boost position to a working position of the braking system; and a hydraulic valve cooperating with the mechanical valve setting the pre-filling pressure inside the channel. The hydraulic valve includes in a first area, facing the mechanical valve, a hole communicating with the channel, and in a second area, hydraulically isolated from the first area, a preloaded resilient element in a chamber held at atmospheric pressure. The hydraulic valve is configured to be connected or not to be connected, by a reciprocating movement inside the channel, to a hydro-booster device and to keep a predetermined pre-filling pressure upon varying of the hydro-boost pressure.