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SPLIT NOZZLE RING TO CONTROL EGR AND EXHAUST FLOW

  • US 20150345316A1
  • Filed: 12/19/2013
  • Published: 12/03/2015
  • Est. Priority Date: 01/14/2013
  • Status: Active Grant
First Claim
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1. A turbocharger (10) for an internal combustion engine comprising:

  • a twin-volute turbine housing (12) including first and second volutes (16, 18);

    a turbine wheel (22) disposed within said twin-volute turbine housing (12) for rotation about a turbocharger axis (R1); and

    a nozzle ring (42, 58) fixedly secured to said twin-volute turbine housing (12), said nozzle ring (42, 58) including a plurality of fixed vanes (44, 62, 66) disposed circumferentially around said turbocharger axis (R1), wherein said plurality of fixed vanes (44, 62, 66) form nozzle passages leading from at least one of said first and second volutes (16, 18) to said turbine wheel (22) for directing exhaust gas against said turbine wheel (22) at an optimum angle.

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