The PCV valve prevents discharge of the mixer blown inside the engine into the atmosphere and contributes to the improvement of engine oil life.
The ejector is installed in an engine with a supercharger , it covers an area that can not be controlled with a PCV valve , contributing to an improvement in engine oil .
The EGR recycles exhaust gas such as "Nox(Nitrogen Oxides)" contributing to improved fuel economy and exhaust gas purification.
