US 12,454,892 B2
Turbine housing with reduced blade pass noise for use in a turbocharger
Arjan Van Bemmel, Almere (NL); and Jeffrey Van Den Broek, Almere (NL)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/270,959
Filed by Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Kanagawa (JP)
PCT Filed Jan. 8, 2021, PCT No. PCT/IB2021/050121
§ 371(c)(1), (2) Date Jul. 5, 2023,
PCT Pub. No. WO2022/148993, PCT Pub. Date Jul. 14, 2022.
Prior Publication US 2024/0060421 A1, Feb. 22, 2024
Int. Cl. F01D 9/02 (2006.01)
CPC F01D 9/026 (2013.01) [F05D 2220/40 (2013.01); F05D 2240/14 (2013.01); F05D 2260/96 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A turbine housing configured to be used in a turbocharger and to accommodate a turbine wheel, the turbine housing comprising:
an inlet that is configured to introduce an exhaust gas flow of an engine into the turbine housing,
at least one volute defining a flow path of the exhaust gas flow through the turbine housing from the inlet towards a wheel housing space in the turbine housing where the turbine wheel to be accommodated by the turbine housing is to be located, and
a tongue that projects from a separation wall delimiting a portion of the at least one volute and that is configured to guide the exhaust gas flow to a section of the wheel housing space where an inducer area of the turbine wheel to be accommodated by the turbine housing is to be located, wherein at least one of the tongue and the separation wall is configured to enable a portion of the exhaust gas flow to pass therethrough as a leakage flow from an upstream side of the at least one of the tongue and the separation wall to a downstream side of the at least one of the tongue and the separation wall,
wherein the at least one of the tongue and the separation wall includes at least one open flow path extending between the upstream side of the at least one of the tongue and the separation wall and the downstream side of the at last one of the tongue and the separation wall, and
wherein the open flow path is provided with an upstream side inlet and a downstream side outlet, and
wherein a bottom surface of the open flow path generally extends in a direction of the exhaust gas flow defined by the at least one volute.