Borgwarner Inc.

Paul Edmonds

Thomas Craig Harris

David J Ledger

Daniel Thomas Pruitt

Thomas Harris

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.

A turbocharger includes a turbine wheel portion to receive exhaust gas from an internal combustion engine, a turbocharger shaft coupled to and rotatable by the turbine wheel portion, the turbocharger shaft extending along a longitudinal axis, and a compressor wheel portion coupled to and rotatable by the turbocharger shaft. The compressor wheel portion includes a symmetrical leading edge region facing airflow and an imbalance correction region disposed longitudinally inboard from the symmetrical leading edge region and extending radially inward to correct an imbalance of the turbocharger shaft and to reduce aero-acoustic noises.

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Asheville, NC, United States of America

Paul Edmonds