F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
192/10, 121/64
F15B 13/02 (2006.01)
Patent
CA 1071482
Abstract of the Disclosure There is disclosed a control system for the air actu- ated ahead and astern clutches and the engine speed governor of a marine propulsion system. 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 ahead or astern clutches to the control. Further move- ment 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 control pressure is reached whereupon a boost valve is actuated to connect full supply air pressure to the selected clutch. A governor control valve also receives the air output of the relay valve proportional to throttle position. When the pressure within the selected clutch exceeds the level of a biasing spring within the governor control valve, the gov- ernor valve is actuated and the air output proportional to throttle position is applied to the engine speed governor. Prior to the actuation of the governor valve, air output pro- portional to throttle position is passed by a regulator valve through the governor valve and to the engine speed governor. The air output pressure which the regulator valve passes is limited to a preselected, adjustable maximum so as to limit the maximum engine boost speed.
289883
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