Patent ID: 8480360

Claim:
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 (b 1 ) 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 (b 2 ) 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 ).