Patent ID: 8763566
Filing Date: 2014-07-01
Classification: F01P

Abstract:
1. An apparatus for cooling an engine of a marine propulsion system, the apparatus comprising: a pump that pumps water from a body of water in which the marine propulsion system is operating, through the engine, and then back to the body of water; wherein the water is directed through a cooling jacket of an exhaust manifold of the engine, through a head of the engine, and then through a block of the engine; wherein the water is directed through the head via an exhaust port cooling jacket disposed in thermal communication with a plurality of exhaust ports in the head; wherein the water is directed into an upper portion of the head and then downwardly in the exhaust port cooling jacket so as to sequentially cool the exhaust ports in the plurality as the water moves downwardly in the exhaust port cooling jacket; wherein the water is directed from the exhaust port cooling jacket into an intake port cooling jacket that is separated from the exhaust port cooling jacket by a wall and disposed in thermal communication with a plurality of intake ports in the head; and wherein the water is directed into a lower portion of the head and then reversely upwardly in the intake port cooling jacket to thereby sequentially cool the intake ports in the plurality as the water moves upwardly in the intake port cooling jacket.