Marine propulsion control system for low speed maneuvering

Details Marine propulsion control system for low speed maneuvering Marine propulsion control system for low speed maneuvering

1982-01-18

1984-08-21

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0096, B60K 4102

Patent

active

044665253

ABSTRACT:
A control system for a marine drive is shown which controls the inflation of ahead and astern clutches and an engine speed governor. Upon actuation of a throttle lever controlling a throttle valve, a selector valve is first actuated to operatively connect one or the other of the clutches to the control. Further movement of the throttle lever causes a relay valve to supply air at a pressure proportional to the throttle position to a main control valve which passes such air pressure to the selected clutch until a first control pressure is reached. Thereafter, air from the supply is supplied at a programmed rate to the selected clutch to continue inflation of the clutch until a second clutch pressure is reached whereupon a boost valve is actuated to connect full supply air pressure to the selected clutch. When the throttle lever is moved to a position commanding low speed, a maneuvering valve pilots the boost valve so that full supply air pressure is connected through the boost valve and the main valve to the selected clutch. The maneuvering valve is rendered inoperative when a sudden increase from zero speed to a high speed is required or if a crash reversal of direction is commanded.

REFERENCES:
patent: 3727737 (1973-04-01), Phinney
patent: 4072221 (1978-02-01), Phinney

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