CYLINDER HEAD HAVED FIXING PRESSURE CONTROL AND FILTERING DEVICE

摘要

A cylinder head is provided to prevent oil leakage from the cylinder head and inflow of engine oil into a combustion chamber of a cylinder block by maintaining the pressure in the cylinder head at a constant level. A cylinder head(10) includes a pressure regulating port(20) and a filter unit(30). The pressure regulating port is connected to an air circulation path(12) and communicated to the outside. The pressure regulating port maintains the pressure in a rocker cover of the cylinder head at a constant level in accordance with engine RPM. The filter unit is connected to the pressure regulating port through a connection hose(32). The filter unit divides gas introduced from the pressure regulating port into gas and oil, and discharges separated oil to a cylinder block(15) and separated gas to an intake port(18) through a first discharge hose(34) and a second discharge hose(36) respectively. A valve(33) is mounted on the connection hose so as to prevent backflow of the gas containing oil flowing into the filter unit.