Patent ID: 8794197
Filing Date: 2014-08-05
Classification: F01L,F01P,F02B,F02F

Abstract:
1. A cooling-means-equipped, liquid-cooled engine comprising: an engine body including a cylinder block, a cylinder head, a piston movably disposed in the cylinder block to undergo reciprocating movement, a combustion chamber defined between the cylinder block, the cylinder head and the piston, an exhaust port formed in the cylinder head in communication with the combustion chamber, and an exhaust valve for opening and closing the exhaust port; a radiator; and a cooling passage connected to the radiator and configured to guide a cooling liquid cooled in the radiator to flow therethrough to thereby cool an area surrounding the combustion chamber of the engine body and an area surrounding the exhaust valve, wherein the cooling passage comprises a single pipe embedded in the cylinder head and formed in a continuous fashion to constitute a single unbranching passage, the pipe having a combustion chamber cooling passage section embedded along an outer periphery of the combustion chamber, and an exhaust port cooling passage section continuous with the combustion chamber cooling passage section and embedded along the area surrounding the exhaust valve.