Controlling turbocharger compressor choke
AssigneeBorgWarner Inc.
InventorGordon Jenks
Life of this patent
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Abstract
A radial flow compressor includes a device (1, 34) for controlling air flow detachment from the volute tongue (3). The device (1, 34) may include a vane (1) or hole (34) in the tongue (3), and serves to redirect air over the volute tongue (3). The device (1, 34) aids in decreasing the velocity of air flow at the volute tongue (3), diminishes the vortices that develop at the volute tongue (3) from the high air velocities, and redirects air over the volute tongue (3) allowing the air to flow through the narrow passage and attach to the walls of the volute outlet (6).
Claims7
A turbocharger comprising a radial compressor including a compressor wheel, a diffuser and a compressor volute (5), the compressor volute (5) having a compressor volute tongue (3) disposed therein, and a redirecting device in the form of a vane (1) in a volute outlet upstream of the compressor volute tongue (3) and configured to redirect air over a suction side of the compressor volute tongue (3).
A turbocharger comprising a radial outflow compressor including
- a compressor wheel,
- a diffuser,
- a compressor volute (5),
- a compressor outlet (6),
- a compressor tongue (3) between the compressor volute (5) and compressor outlet (6), the volute tongue (3) having a volute side and a compressor outlet side, and
- a redirecting device (1, 34) in the compressor volute (5) for controlling choke at the outlet side of the volute tongue (3) by controlling air flow detachment from the volute tongue (3) by redirecting air flow onto the compressor outlet side of the compressor volute tongue (3).
Dependencies are inferred from the claim text.