| 摘要 |
<p>In a master cylinder assembly transfer chambers in master cylinders are connected by a transfer port or passage, and the transfer chambers are isolated from the pressure spaces of the cylinders by normally closed transfer valves which are adapted to be opened by axial movement of pistons in a brake applying direction. At least one of the master cylinders incorporates pressure relief means defining at least when the transfer valve is closed, a leak path between the transfer chamber of that master cylinder and a reservoir for fluid to compensate for increase in pressure in the chambers due to thermal expansion of the hydraulic fluid.</p> |
