| 摘要 |
A pneumatic clutch control assembly for a ship's propulsion system which sequentially controls the inflation and exhaust of pneumatically operated clutches and also controls the throttle system of an associated prime mover. Upon actuation of a control valve, which may be located in the pilot house and at other locations, a series of valves are sequentially operated to inflate a selected ahead or astern clutch in one of two conditions: (1) a first condition in which the clutch is inflated to reduced pressures according to the variable pressure of the control valve to allow slippage of the clutch and permit operation at speeds below the idle speed of the prime mover, and (2) a second condition in which the clutch is inflated to full pressure under a programmed inflation rate. In the first condition, the prime mover remains at minimum speed and only part of the idle torque is transmitted as required for the desired propeller speed. In the second condition, the control assembly limits the prime mover control signal during periods of partial clutch inflation until full pressure is supplied to the clutch.
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