Patent ID: 6800004
Filing Date: 2004-10-05
Classification: B63H,F01N,Y02T

Abstract:
An exhaust system for a marine engine, comprising:an exhaust conduit shaped to be connected in fluid communication with at least one exhaust port of said engine to direct exhaust gases from said engine; a coolant conduit disposed in thermal communication with said exhaust conduit, said coolant conduit comprising a first coolant passage and a second coolant passage; a coolant inlet port disposed in fluid communication with said coolant conduit to direct a flow of coolant into said first and second coolant passages; and an orifice disposed in fluid communication between said coolant inlet port and said second coolant passage, the relative flow rates of coolant through said first and second coolant passages being determined as a function of the flow rate of said coolant through said coolant inlet port.