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US 9,039,353 B2Granted
Turbocharger turbine
AssigneeBorgWarner Inc.
InventorThomas Ramb
Life of this patent
Estimating the term…
Abstract
A turbocharger turbine which has a wastegate slide sleeve (8), which is provided in a wastegate arrangement (5) and which closes off the wastegate duct, as a shut-off element. The wastegate arrangement (5) comprises a bypass duct (6) which runs in the turbine housing (2); a wastegate duct (7) which runs in the turbine housing (2) to the turbine housing outlet (4) and which is connected via the bypass duct (6) to the turbine housing inlet (3); and a shut-off element (8) which is arranged in the turbine housing (2). The shut-off element (8) is provided to open and close the wastegate duct (7) and can be moved by means of an actuating device (9) into an open position and closed position.
Claims14
A turbocharger turbine (1), having
- a turbine housing (2) in which a turbine wheel (10) is arranged so as to be rotatable about a turbine housing axis (L), at least first and second turbine housing inlets, with one turbine housing inlet associated with each of at least two turbine volutes (17, 18), the turbine volutes shaped to direct exhaust flow from the associated turbine housing inlet onto the turbine wheel, a turbine wheel exhaust outlet, and a turbine housing outlet (4);
- and
- a wastegate arrangement (5) which has:
- at least first and second bypass ducts (6, 6′), wherein one bypass duct is associated with each of said turbine housing inlets,
- an annular chamber (11) circumscribing the turbine housing axis (L), wherein each bypass duct bypasses the turbine volutes (17, 18) and runs from said turbine housing inlets upstream of the turbine volutes (17, 18) into a different segment of the annular chamber (11),
- an annular wastegate duct (7) circumscribing the turbine housing axis (L) downstream of the turbine wheel exhaust outlet, into which the annular chamber opens,
- a slide sleeve (8) which is arranged between the bypass ducts (6, 6′) and wastegate duct (7), and which can be moved via an actuating device (9) into an open position allowing flow of exhaust gas through the bypass ducts (6, 6′) and wastegate duct (7) and a closed position blocking flow of exhaust gas through the bypass ducts (6, 6′) and wastegate duct (7).
4 more elements
A turbocharger turbine (1), having
- a turbine housing (2) in which a turbine wheel (10) is arranged so as to be rotatable about a turbine housing axis (L), at least two turbine housing inlets, with one turbine housing inlet associated with each of at least two turbine volutes (17, 18), the turbine volutes shaped to direct exhaust flow from the associated turbine housing inlet onto the turbine wheel, a turbine wheel exhaust outlet, and a turbine housing outlet (4);
- and
- a wastegate arrangement (5) which has:
- at least first and second bypass ducts (6, 6′), each bypass duct associated with one turbine housing inlet, each bypass duct bypassing the turbine volutes (17, 18) and running from said turbine housing inlets upstream of the turbine volutes (17, 18) to a wastegate duct (7) which discharges into the turbine housing outlet (4) downstream of the turbine wheel exhaust outlet;
- and
- a slide sleeve (8) which is arranged between the bypass ducts (6, 6′) and wastegate duct (7), and which can be moved via an actuating device (9) into an open position allowing flow of exhaust gas through the bypass ducts (6, 6′) and wastegate duct (7) and a closed position blocking flow of exhaust gas through the bypass ducts (6, 6′) and wastegate duct (7).
3 more elements
A turbocharger turbine (1), having
- a turbine housing (2) in which a turbine wheel (10) is arranged so as to be rotatable about a turbine housing axis (L), the turbine housing (2) having a turbine housing inlet, at least one turbine volute (3) designed to direct exhaust flow from the turbine housing inlet onto the turbine wheel, a turbine wheel exhaust outlet, and a turbine housing outlet (4);
- and
- a wastegate arrangement (5) which has:
- a bypass duct (6) which bypasses the at least one turbine volute and runs from the turbine housing inlet upstream of the at least one turbine volute (3) to a wastegate duct (7) which discharges into the turbine housing outlet (4) downstream of the turbine wheel exhaust outlet;
- and
- a slide sleeve (8) which is arranged between the bypass duct (6) and wastegate duct (7) and which can be moved via an actuating device (9) into an open position allowing flow of exhaust gas through the bypass duct (6) and wastegate duct (7) and a closed position blocking flow of exhaust gas through the bypass duct (6) and wategate duct (7), and which is arranged such that the exhaust gas flow is directed at the slide sleeve in a substantially non-axial direction.
3 more elements
Dependencies are inferred from the claim text.