Turbine housing
AssigneeCalsonic Kansei Corporation
InventorsSatoru Yokoshima, Toru Iijima, Naoki Tobari, Yasunori Kozuka, Takaharu Yamamoto
Life of this patent
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Abstract
In a turbine housing that includes a scroll portion constituting a spiral exhaust gas passage between an exhaust inlet side flange constituting an inlet for exhaust gas and an exhaust outlet side flange constituting an outlet for the exhaust gas, the turbine housing discharging the exhaust gas to an exhaust outlet side through a turbine wheel disposed in a central portion of the scroll portion, a part of a passage face of the exhaust gas passage, in the scroll portion, is formed from a scroll member made of a casting.
Claims15
A turbine housing comprising a scroll portion constituting a spiral exhaust gas passage between an exhaust inlet side flange constituting an inlet for exhaust gas and an exhaust outlet side flange constituting an outlet for the exhaust gas, the turbine housing discharging the exhaust gas to an exhaust outlet side through a turbine wheel disposed in a central portion of the scroll portion, wherein
- the spiral exhaust gas passage of the scroll portion is formed from at least:
- a first scroll member including a material having a higher heat-resistant than that of one made of a sheet metal, and
- second scroll member made of the sheet metal, wherein
- the first scroll member is arranged at a part of the scroll portion, from the spiral exhaust gas passage to a region facing the turbine wheel at the exhaust outlet side.
A turbine housing comprising a scroll portion constituting a spiral exhaust gas passage between an exhaust inlet side flange constituting an inlet for exhaust gas and an exhaust outlet side flange constituting an outlet for the exhaust gas, the turbine housing discharging the exhaust gas to an exhaust outlet side through a turbine wheel disposed in a central portion of the scroll portion, wherein
- the spiral exhaust gas passage of the scroll portion is formed from at least:
- a first scroll member including a material having a higher heat-resistant than that of one made of a sheet metal, and
- a second scroll member made of the sheet metal, wherein
- a cross section of the first scroll member along a flat surface including a rotation center axis of the turbine wheel is formed with:
- an inner-side region extending in an extending direction of the rotation center axis on the rotation center axis side and facing the turbine wheel;
- and
- an outer-side region folded back from an end portion on a side of the turbine wheel in the extending direction of the rotation center axis on an outside of the inner-side region, the outer-side region projecting to a side separating from the turbine wheel.
Dependencies are inferred from the claim text.