WASTEGATE WITH INJECTED FLOW

摘要

A turbocharger turbine having housing walls defining a diffuser. Within the diffuser, a center body within the diffuser is supported by de-swirl vanes extending from the diffuser wall. The center body forms a de-swirl passageway having an increasing mean diameter of flow from an upstream end of the center body to a leading edge of the de-swirl vanes. A trailing edge of the de-swirl vanes is near the downstream end of the center body. Annular-type guide vanes surround the center body within the de-swirl passageway. A wastegate system is configured to vent wastegate flow into the diffuser through injection ports on the de-swirl vanes, annular guide vanes and/or center body.

主权项

1. A turbocharger turbine, comprising:
a turbine wheel; a housing having housing walls that define a turbine passageway extending axially, the passageway including a wheel chamber containing the turbine wheel, the wheel chamber extending downstream from an inducer to an exducer of the turbine wheel, and an outlet passage extending downstream from the exducer and defining a region of exducer flow; a wastegate system having a controllable valve that controllably places the outlet passage in fluid communication with an inlet flow upstream of the inducer via a wastegate exhaust port; and an injection body within the outlet passage, the injection body having a hollow interior in direct fluid communication with the exhaust flow from the wastegate exhaust port; wherein the injection body includes one or more injection ports placing the injection body hollow interior in fluid communication with the outlet passage within the exducer flow.