A PCV valve mounting structure which releases freezing of a PCV valve promptly is provided. A PCV valve mounting structure is provided with a resin cover forming an internal space portion between the resin cover and a cylinder head of an internal combustio...

In a closed breather system which returns blow-by gas 1 extracted, through a gas extraction tube 5, from an engine 3 to an intake tube 7 through a ventilator 2 for separation and recovery of oil mist, a three-way valve 13 is incorporated in the gas extract...

It is an object of this invention to provide a ventilation control apparatus for a supercharged internal combustion engine that can perform crankcase ventilation favorably. A system of the invention includes a supercharging system, an EGR mechanism, and a ...

The assembly has a cylinder having cylinder head (1) with valve control actuated gas exchange valves which are connected to the inlet and outlet passages. The portion of the intended screw (9) facing away from the exhaust port in the cylinder head is provi...