| 摘要 |
<p>PURPOSE:To cut off a running clutch at the same time as braking force for a brake starts up by working an inching valve in detection of boost chamber pressure of a brake assistor. CONSTITUTION:When a brake pedal 6 is trod, an operating rod i, a spool valve e of a booster 22 for a brake assistor moves through an input rod k to the left, a return valve part o is closed at the same time as oil pressure goes up between a pump 21 and the booster 22 by throttling a boost valve part p. In the simultaneity with it, a control valve part q is opened, pressured oil is inducted into a boost chamber r, a power piston d moves to the left, a piston of a master cylinder is thrusted through a push rod f, and brake oil pressure goes up. Thus, oil pressure in the boost chamber r going up with brake oil pressure works an inching valve 5 through an oil passage s, a cylinder 19, and cuts of a running clutch.</p> |
