Direct inlet axial automotive turbine

摘要

Systems and methods for operating a turbocharged engine are described. In one example, a turbocharger system, comprising: a bearing housing including a turbine and at least one compressor coupled to the turbine via a shaft; and wherein the turbine comprises a stator stage and a rotor stage mounted to the cylinder head by the bearing housing and positioned in an exhaust passage of a cylinder head. In this way, a more compact design is achieved which eliminates the cost and complexity of a turbine housing and improves turbine efficiency by positioning the turbine closer to the exhaust pulses.

主权项

1. A system for an engine, comprising:
a cylinder head that includes a plurality of exhaust passages collecting exhaust gas in an exhaust collector contained within the cylinder head, the exhaust collector including a wastegate; a turbocharger comprising: one or more turbines including a rotor stage, one or more compressors, and one or more shafts coupling the one or more turbines to the one or more compressors; at least one of the one or more turbines and rotor stage located within the cylinder head; and a hot gas collector arranged within and fabricated as a part of a turbocharger bearing housing, the turbocharger bearing housing directly mounted to the cylinder head; wherein when the wastegate is activated, exhaust gas bypasses the one or more turbines and enters an exhaust outlet included in the turbocharger bearing housing.