Patent ID: 7318396
Filing Date: 2008-01-15
Classification: F01P

Abstract:
1. A cooling system for a marine propulsion engine, comprising: first and second cooling paths connected in series fluid communication with each other; a water pumping device connected in series fluid communication with said first and second cooling paths and configured to pump water from a body of water and cause said water to flow through said first and second cooling paths, said second cooling path being disposed downstream from said first cooling path; a first thermally responsive valve connected in fluid communication with a first point of said cooling system which is downstream from said second cooling path, said first thermally responsive valve being configured to allow water to flow out of said second cooling path in response to a temperature of said water at said first point exceeding a first temperature threshold; a water conduit connected in fluid communication with a second point of said cooling system which is downstream of said first cooling path and upstream of said second cooling path, said water conduit being configured to direct water to flow out of said first cooling path; and a second thermally responsive valve connected in thermal communication with said second point of said cooling system, said water conduit being a bypass conduit connected in fluid communication with said second thermally responsive valve.