Engine Intake air plumbing often has recirculation or separation regions along the inner turn radius of the elbows. These turns reduce the flow cross-section area limiting the flow and increases pressure losses within the entire system. In a plain elbow (left), a skewed velocity profile results. With a CRV^® mounted in front of the elbow (right), there is a flat velocity profile. CRV^® rotates the air intake flow entering an elbow eliminating the separation flow in those bends, increasing the air flow rate and providing more boosts for the same sized turbocharger or supercharger engine.

 Inflow in Turbocharger with and without CRV^® 

CRV^® removes the distorted airflow to the inlet of turbochargers, caused by cramped space under the hood. The experiment shown was conducted on a turbocharged 40 hp VW rabbit diesel engine by inserting a CRV^®, in the intake manifold. The measurement uses an airflow meter at the intake of the turbocharger to measure the inflow vs. rpm with and without a CRV^®. Addition of a CRV^® to remove the inlet distortion shows that the air flow at lower rpm is substantially increased by as much as 50% at 2000 rpm, and was increased at 2800 rpm by an additional 5.3%. It substantially increased the low end performance of the diesel engine. Without this CRV^® modification the airflow to the turbocharger is highly distorted where the turbocharger cannot perform at its best.



 

CRV® to Boost Supercharger Performance:

Low cost Green tech device Increases Power & Efficiency