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Turbocharger turbine

  • US 8,480,360 B2
  • Filed: 12/31/2011
  • Issued: 07/09/2013
  • Est. Priority Date: 07/03/2009
  • Status: Active Grant
First Claim
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1. A turbine of a turbocharger, the turbine comprising:

  • a) a turbine housing (5);

    b) a volute diffuser channel (7);

    c) a power turbine (9);

    d) a volute gas feeding passage; and

    e) a partition wall (21);

    wherein;

    the volute gas feeding passage is arranged in the turbine housing (5);

    the partition wall (21) is arranged in the volute gas feeding passage and divides the volute gas feeding passage into an external volute gas feeding passage (19) and an internal volute gas feeding passage (11);

    the external volute as feeding passage (19) is located outside the internal volute gas feeding passage (11);

    the external volute gas feeding passage (19) is provided with a reduced outlet communicated with the volute diffuser channel (7), and a as flow internal guiding face (16) and a gas flow external guiding face (18) are respectively arranged on two sides of the reduced outlet;

    the internal volute gas feeding passage (11) is a single flow passage, and a position of the reduced outlet close to the external volute as feeding passage (19) is provided with an outlet (35) of the internal volute gas feeding passage (11) communicated with the volute diffuser passage (7); and

    a fixed pressure internal flow passage diffusing width (b1) of the outlet of the internal volute gas feeding passage (11) before the gas enters the power turbine (9) along the circumference tail edge of the internal volute gas feeding passage (11) is smaller than a fixed pressure external flow passage diffusing width (b2) of the outlet of the external volute gas feeding passage (19) before the gas enters the power turbine (9) along the circumference tail edge of the external volute gas feeding passage (19).

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