ENGINE COOLING SYSTEM AND ENGINE WASTE HEAT RECOVERY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an engine cooling system and an engine waste heat recovery system, for improving reliability, by restraining deterioration caused by the heat of a valve stem sealing member. SOLUTION: An exhaust valve 31a is constituted and arranged so that an exhaust passage can be closed from the combustion chamber 3a side. This exhaust valve 31a is arranged on the lower end of an exhaust valve stem 31b. The valve stem sealing member 33 is installed on a cylinder head 3. This valve stem sealing member 33 is constituted for sealing a clearance between the exhaust valve stem 31b and a hole for guiding this stem. An oil injection part (a seal oil filling part 43) is also arranged on the cylinder head. This oil injection part is constituted for injection lubricating oil toward the valve stem sealing member 33. COPYRIGHT: (C)2009,JPO&INPIT