Patent ID: 8142244
Filing Date: 2012-03-27
Classification: B63H

Abstract:
1. An outboard motor to generate a propulsive force to be supplied to a marine vessel, the outboard motor comprising: a propeller to generate the propulsive force; an engine to generate motive power to rotate the propeller; a transmission to transmit the motive power of the engine to the propeller; a casing to house the transmission; an engine cooling mechanism including a pump to take water around the casing into the casing and to cool the engine by supplying the water taken into the casing to the engine via an engine coolant flow channel; a cooling jacket located adjacent to the transmission inside the casing; a water intake opening provided at a location on the casing to which a dynamic pressure is applied by water flow when the marine vessel travels; and a transmission coolant flow channel, provided independently of the engine coolant flow channel, to connect the water intake opening and the cooling jacket.