| 摘要 |
1511419 Fluid-pressure servomotor systems CONTROL LOGIC (PTY) Ltd 21 June 1976 [25 June 1975] 25750/76 Heading G3P [Also in Division F2] A valve 1, in a vacuum line between an inlet manifold 3 and a servomotor 4 operating an engine throttle, comprises a piston 16 operated by a solenoid 5 to co-operate with an atmospheric inlet 7 and an outlet 8 leading to the manifold to vary the vacuum applied to the servomotor through a further outlet 11 in permanent communication with parts 14, 15 and the interior of the piston. The solenoid may be energized by a detector coil co-operating with magnets mounted on the propellor shaft of a vehicle to control road speed. One end of the piston is closed by a sealing disc 17 of limited compressibility and the outlet 8 is considerably smaller than the inlet 7 to improve linearity. |
