Patent ID: 7001231
Filing Date: 2006-02-21
Classification: B63H

Abstract:
1. A marine propulsion system, comprising: an engine; a first exhaust conduit connected in fluid communication with an exhaust system of said engine, said first exhaust conduit being a main exhaust conduit of said marine propulsion system; a second exhaust conduit connected in fluid communication with said exhaust system of said engine, said second exhaust conduit being an idle relief exhaust conduit of said marine propulsion system; a water cooling system configured to conduct water in thermal communication with at least one heat producing region of said engine; and a water conduit connected in fluid communication with said water cooling system, said water conduit having a first opening disposed to inject a first flow of water into said first exhaust conduit, said water conduit having a second opening disposed to inject a second flow of water into said second exhaust conduit, said water conduit extending through said second exhaust conduit, a distal end of said water conduit extending into said first exhaust conduit.