Patent ID: 8689553

Claim:
An internal combustion engine comprising: an exhaust system to discharge exhaust gas from the internal combustion engine; an intake system to deliver a compressed intake air to the internal combustion engine; and an inlet annulus comprising an inlet end, an outlet end, and a plurality of EGR diffuser passages extending through the inlet annulus, the inlet end of the inlet annulus having a first diameter (D) that is smaller than a second diameter (D 2 ) of the outlet end of the inlet annulus, wherein the inlet annulus defines an annular exhaust gas recirculation (EGR) conduit distribution passage extending circumferentially about the inlet annulus and configured to receive diverted exhaust gas from the exhaust system for delivery to a low pressure zone (Z) where the compressed intake air passes through the plurality of said EGR diffuser passages, the plurality of said EGR diffuser passages disposed through a wall of the inlet annulus at circumferentially spaced locations about the annular EGR conduit distribution passage.