Ventilation control system

Abstract

An aeration control system and method for a marine vessel. The system includes a valve configured to he coupled to an aeration conduit of a marine vessel. The valve is configured to be responsive to a valve control signal having a first value so as to be open and to provide air to the aeration conduit, and the valve configured to be responsive to the valve control signal having a second value so as to be closed and not provide air to the aeration conduit. The aeration control system also includes a control device, electrically coupled to the valve, that provides the valve control signal to the valve

What is claimed is: 
     
         1 - 37 . (canceled) 
     
     
         38 . A control system for an articulating propeller of a marine vessel, the marine vessel having an engine, the control system comprising:
 an actuator coupled to the articulating propeller; and   a control device operative to control the actuator to vary a submergence of the articulating propeller based at least in part on at least one engine load signal sensed from the engine.   
     
     
         39 . The control system of  claim 38 , wherein the at least one engine load signal comprises an engine revolutions per minute (RPM) signal. 
     
     
         40 . The control system of  claim 39 , wherein the at least one engine load signal further comprises an engine torque signal. 
     
     
         41 . The control system of  claim 38 , wherein the at least one engine load signal comprises an engine torque signal. 
     
     
         42 . The control system of  claim 38 , wherein the at least one engine load signal is indicative of engine horsepower. 
     
     
         43 . The control system of  claim 38 , wherein the submergence of the articulating propeller is an amount of area of the articulating propeller that is submerged. 
     
     
         44 . The control system of  claim 38 , wherein the control device is operative to control the actuator to increase the submergence of the articulating propeller in response to the at least one engine load signal indicating a decreased engine load. 
     
     
         45 . The control system of  claim 38 , wherein the control device is operative to control the actuator to decrease the submergence of the articulating propeller in response to the at least one engine load signal indicating increased engine load. 
     
     
         46 . A control system for an articulating propeller of a marine vessel, the marine vessel having an engine, the control system comprising:
 an actuator coupled to the articulating propeller; and   a control device operative to control the actuator to vary a torque on the articulating propeller by varying a submergence of the articulating propeller based at least in part on at least one operating parameter of the engine.   
     
     
         47 . The control system of  claim 46 , wherein the at least one operating parameter of the engine is at least one engine load signal. 
     
     
         48 . The control system of  claim 47 , wherein the at least one engine load signal comprises an engine revolutions per minute (RPM) signal. 
     
     
         49 . The control system of  claim 48 , wherein the at least one engine load signal further comprises an engine torque signal. 
     
     
         50 . The control system of  claim 47 , wherein the at least one engine load signal comprises an engine torque signal. 
     
     
         51 . The control system of  claim 47 , wherein the at least one engine load signal is indicative of engine horsepower. 
     
     
         52 . The control system of  claim 47 , wherein the control device is operative to control the actuator to increase the torque on the articulating propeller in response to the at least one engine load signal indicating a decreased engine load. 
     
     
         53 . The control system of  claim 47 , wherein the control device is operative to control the actuator to decrease the torque on the articulating propeller in response to the at least one engine load signal indicating increased engine load.