Control device for an exhaust gas guide section of a turbine
AssigneeIHI Charging Systems International GmbH
InventorsThomas Uibelhoer, Liudmila Khizhnyakova
Life of this patent
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Abstract
In a control device for a flow-through exhaust gas guide section of a turbine for opening and closing a bypass duct to permit exhaust gas to bypass a turbine wheel arranged in a turbine wheel housing of the exhaust gas guide section comprising with an actuating device and a cover element being provided for opening or closing a flow cross-section of the bypass duct, the cover element is a hollow truncated cone with passages provided in the cone-shaped cover element which differ from one another so as to provide for a controllable efficient and quiet exhaust gas flow through the flow cross-section into the bypass duct.
Claims5
A flow control device for an exhaust gas guide section (1) of a turbine provided for opening and closing a turbine bypass duct (8) with a bypass opening (9) having a flow cross-section (10) arranged in the exhaust gas guide section (1) for bypassing a turbine wheel rotatably disposed in a wheel chamber (6) of the exhaust gas guide section (1), the flow control device comprising an actuating device (12) engaging a cover element (11) for opening or closing the flow cross-section (10) of the bypass duct (8) by linear motion of the cover element (11), the cover element (11) being at one side in the form of a truncated cone with flow guide passages formed in the cover element (11) by at least three circumferentially equally spaced partition walls (20) forming separate inflow areas (18, 18′, 18″) and having narrow outer surface portions (19, 19′, 19″) extending into the bypass duct (8) so as to abut adjacent wall areas of the turbine bypass duct (8) for guiding the cover element (11) over the full length of the travel distance of the cover element (11) from the closed to the fully open position of the cover element (11) to provide for the linear motion of the cover element (11) in the turbine bypass duct (8) and defining the separate inflow guide areas (18, 18′, 18″) in the cover element (11), and the opposite side having a mounting element (21) including an elongated transverse opening (22) with opposite slide surfaces (24), and the actuating device (12) in the form of a pivot lever having a holding arm (23) received in the elongated transverse opening (22) for actuating the cover element (11) by pivotal movement of the actuating device (12).
Dependencies are inferred from the claim text.