EGR system having EGR valve with purge air chamber

摘要

An exhaust gas recirculation system for an internal combustion engine includes an intake manifold, an exhaust manifold, and a turbocharger compressor coupled with the intake manifold. The exhaust gas recirculation system includes an EGR valve fluidly coupled between the exhaust manifold and the intake manifold. The EGR valve includes a valve stem and a purge air inlet associated with the valve stem. The purge air inlet is in fluid communication with the compressor.