Patent ID: 6672919
Filing Date: 2004-01-06
Classification: B63H

Abstract:
A control system for use in a marine exhaust system, such marine exhaust system being adapted for connection to an internal combustion marine engine at an inlet end of such marine exhaust system, such internal combustion marine engine having one or more exhaust gas discharge ports, such marine exhaust system comprising one or more exhaust chambers which define an exhaust gas discharge path for conveying exhaust gases from such one or more exhaust gas discharge ports of such internal combustion marine engine to an exit end of such exhaust gas discharge path, such marine exhaust system being designed to use cooling water, flowing through a water jacket, to control temperatures in the exhaust system, along such exhaust gas discharge path, said control system comprising:(a) sensing apparatus sensing at least one parameter, the at least one parameter being related to accumulation of liquid water in such one or more exhaust chambers proximate such inlet end of such marine exhaust system; and (b) an electrical control receiving, from said sensing apparatus, a signal representing the at least one sensed parameter and, in response to the signal representing a value of such at least one parameter indicating propensity for, or actual, accumulation of liquid water in such one or more exhaust chambers, proximate such inlet end of such marine exhaust system, generating a control response which controls flow of cooling water in a water jacket in such marine exhaust system, sufficient to maintain temperatures, in such marine exhaust system, at such levels as to limit accumulation of liquid water in such one or more exhaust chambers and proximate such exhaust gas discharge ports, from no liquid water to no more liquid water than amounts which are consistent with continued effective operation of both such internal combustion marine engine and such marine exhaust system.