Patent ID: 7469691

Claim:
A product comprising: a primary air intake conduit in communication with a combustion engine; a primary exhaust gas conduit in communication with the combustion engine; a turbocharger having a turbine in fluid communication with the primary exhaust gas conduit and having a compressor in fluid communication with the primary air intake conduit; a first primary exhaust gas recirculation line in fluid communication with the primary exhaust gas conduit, the first primary exhaust gas recirculation line having a first exhaust gas cooler and being constructed and arranged to be connected to the primary air intake conduit at a second location; and a bypass line constructed and arranged to provide a flow path for recirculation exhaust gas around the first exhaust gas cooler, the bypass line having a first end constructed and arranged to be connected to the primary air intake conduit at a first location; wherein the second location is located downstream of the first location with respect to the direction of flow of gases in the primary air intake conduit, and the compressor is located downstream of the second location, and wherein the first location is spaced a sufficient distance from the second location so that non-cooled combustion engine exhaust gas discharged from the bypass line into the primary air intake conduit has sufficient time to mix before mixing with cooled combustion engine exhaust gas passing through the first exhaust gas cooler and discharged into the primary air intake conduit so that condensation in the gas traveling through the primary air intake conduit at a location before the compressor is substantially eliminated.