TUNABLE INTAKE SYSTEM FOR EXHAUST GAS RECIRCULATION IN AN INTERNAL COMBUSTION ENGINE

The invention relates to a tunable intake system (1) for exhaust gas recirculation in an internal combustion engine with a plurality of cylinders, the system comprising: - an exhaust gas recirculation manifold (2) arranged to distribute recirculated exhaust gas in an intake air stream to be introduced into the combustion engine; - the manifold (2) having an exhaust gas recirculation inlet (3) and an intake air inlet (4) as well as at least one outlet (5) leading to the multiple cylinders of the engine; - a first distribution pipe (6) connected to the exhaust gas recirculation inlet (3), said first distribution pipe (6) having a first pattern of flow distribution perforations (7) for distributing the recirculated exhaust gas into the manifold (2), where the invention is especially characterized in: - a second distribution pipe (8) with a second pattern of flow distribution perforations (9) for distributing the recirculated exhaust gas into the manifold (2) is fitted outside of said first distribution pipe (6) whereby an interstitial gap (10) is formed therebetween, and - at least one of said first and second distribution pipes (6, 8) being rotatable with respect to the other in order to selectively tune the distribution of recirculated exhaust gas for multiple operational points of the engine.