Boosting devices with integral features for recirculating exhaust gas

摘要

According to one embodiment of the invention, a turbine housing includes a turbine inlet in fluid communication with a turbine volute configured to house a turbine wheel, the turbine inlet configured to direct an exhaust gas flow from an engine to the turbine wheel. The turbine housing also includes a turbine outlet in fluid communication with the turbine volute, the turbine outlet configured to direct the exhaust gas flow to an exhaust gas conduit and a first exhaust gas recirculation supply port located on and in fluid communication with the turbine outlet, the first exhaust gas recirculation supply port being configured to direct a portion of the exhaust gas flow to an exhaust gas recirculation supply conduit.

主权项

1. A turbocharger, comprising:
a turbine, comprising: a turbine wheel attached to a shaft, the turbine wheel rotatably disposed in a turbine housing; a turbine inlet located on the turbine housing and in fluid communication with a turbine volute that houses the turbine wheel, the turbine inlet configured to direct a first exhaust gas flow from an engine to the turbine wheel; a turbine outlet located on the turbine housing, the turbine outlet in fluid communication with the turbine volute; a first exhaust gas recirculation supply port located on and in fluid communication with the turbine outlet, the exhaust gas recirculation supply port configured to direct a portion of the first exhaust gas flow that has passed through the turbine wheel to an exhaust gas recirculation supply conduit; a second exhaust gas recirculation supply port coupled to receive the first exhaust gas flow from the engine; and, a compressor comprising a compressor inlet, a compressor outlet and a compressor volute therebetween, the compressor further having a compressor wheel coupled to the shaft, wherein the exhaust gas recirculation supply conduit is fluidly coupled to the compressor between the compressor inlet and the compressor wheel.