| 摘要 |
It is aimed to improve brake feeling of a negative pressure type brake hydraulic pressure generating device in which the stroke on the operating side can be set independently of the stroke on the output side. A spring for setting the stroke on the operating side is formed of coil springs arranged in series to impart the spring nonlinear characteristics, thereby biasing a piston, which can be moved axially relative to a power plate and includes a control valve for introducing atmospheric air, in the return direction.
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