Borgwarner Inc.

Daniel Thomas Pruitt

David J Ledger

Thomas Craig Harris

Paul Edmonds

Dominic William DePaoli

Aaron Date

Evan Lucas

Tanner Leigh Brookshire

Matt Tondra

A compressor housing () for a turbocharger includes a recirculation cavity () formed in a portion of the compressor housing (). The recirculation cavity () is defined by an inner cavity wall () and an outer cavity wall (). In addition, an inlet groove () and an outlet () are formed in the recirculation cavity () for circulating airflow from the compressor housing () through the recirculation cavity (), and at least one recirculation noise obstruction () is fixedly secured within the recirculation cavity () to disrupt air flow through the cavity and reduce noise in the compressor housing ().

Recirculation noise obstruction for a turbocharger

A bearing heat shield, a turbomachine having a bearing heat shield and method for assembling such is disclosed. The bearing heat shield includes an outer annular ring extending around an outer circumference of the bearing heat shield, the outer annular ring has a flat surface and extends inward from an outer diameter measurement to a middle diameter measurement. The bearing heat shield further includes a concave surface, the concave surface being defined by a curvature and extending inward from the middle diameter measurement to an inner diameter measurement.

Bearing heat shield

An annular balance adjusting device () is included in the clamping region of a turbocharger () rotating assembly. The annular balance adjusting device () includes an annular member () having a non-uniform weight distribution. By setting the rotational orientation of the annular member () relative to the rotating assembly ((not labeled)), imbalance of the rotating assembly can be addressed. The annular balance adjusting device () can be used to correct the imbalance of the rotating assembly, thereby reducing turbocharger () vibration and increasing turbocharger () durability.

Devices and method for adjusting turbocharger rotating assembly balance

A turbocharger includes ported shroud compressor housing disposed about compressor wheel having air inlet passage extending axially along and circumferentially about a longitudinal axis, volute base portion operably adjacent to compressor wheel, contour that encircles and complementarily matches compressor wheel, inducer including ring and plurality of extending members, inlet section extending from volute base portion, and recirculation cavity formed in volute base portion and inlet section with recirculation slot and inlet slot for reentry of airflow into inlet section. The ring has inner wall surface defining first section extending axially along longitudinal axis proximate to compressor wheel, second section extending from first section radially away from longitudinal axis, and third section extending from second section radially away from and along longitudinal axis and distal to compressor wheel. The inlet section has first diameter and third section has second diameter being either one of equal to or less than first diameter.

Turbocharger having improved ported shroud compressor housing

A turbocharger includes ported shroud compressor housing disposed about a compressor wheel, having an air inlet passage extending axially along and circumferentially about a longitudinal axis, volute base portion operably adjacent to compressor wheel, contour that encircles and complementarily matches compressor wheel, inducer including ring and plurality of extending members, inlet section extending from volute base portion, and recirculation cavity formed in volute base portion and inlet section with a recirculation slot and inlet slot for reentry of airflow into inlet section. The ring has an inner wall surface defining a first section extending axially along the longitudinal axis and proximate to the compressor wheel, second section extending from first section radially away from longitudinal axis, and third section extending from second section along longitudinal axis and distal to the compressor wheel. The inlet section has a first diameter and third section has a second diameter greater than first diameter.

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Arden, NC, United States of America

Daniel Thomas Pruitt