Cooling system for four stroke outboard motor
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorYasuhiko Shibata
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Abstract
A liquid cooling system for a four-cycle internal combustion engine utilized as a power plant for an outboard motor. The cooling system is designed so that coolant is first delivered to cool an exhaust manifold in the cylinder block, then the exhaust ports of the cylinder head and the other cylinder head components and then the cylinder block cooling jacket surrounding the cylinder bores.
Claims8
A cooling system for a four-cycle internal combustion engine having a cylinder block in which at least one cylinder bore is formed, a cylinder head closing said cylinder block and formed with an exhaust passage for discharge of exhaust gases from said cylinder bore, said exhaust passages through a lower face of said cylinder head and communicating with an exhaust manifold formed in said cylinder block, a cooling jacket in said cylinder block for cooling said cylinder bore, a cooling jacket in said cylinder head for cooling said exhaust passage, and means for introducing coolant first to said cylinder head cooling jacket and from said cylinder head cooling jacket to said cylinder block cooling jacket.
Dependencies are inferred from the claim text.