17-04-2014 дата публикации
Номер: US20140105730A1
Автор:
Tim Denholm,
James Alexander McEwen,
Tom J. Roberts,
Robert L. Holroyd,
Christopher Nomington,
Arun Vijayakumar,
Stephen Edward Garrett,
DENHOLM TIM,
MCEWEN JAMES ALEXANDER,
ROBERTS TOM J,
HOLROYD ROBERT L,
NOMINGTON CHRISTOPHER,
VIJAYAKUMAR ARUN,
GARRETT STEPHEN EDWARD,
ROBERTS TOM J.,
HOLROYD ROBERT L.
According to a first aspect of the present invention there is provided a variable geometry turbine comprising: a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls, the annular inlet being divided into at least two axially offset inlet portions; a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the inlet; and a guide for guiding the movement of the cylindrical sleeve, the guide being at least partially located within the inlet at a radially extent of the inlet portions, and extending in an axial direction parallel to the turbine axis. 1. A variable geometry turbine comprising:a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls, the annular inlet being divided into at least two axially offset inlet portions;a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the inlet; anda guide for guiding the movement of the cylindrical sleeve, the guide being at least partially located within the inlet at a radially extent of the inlet portions, and extending in an axial direction parallel to the turbine axis.2. The variable geometry turbine of claim 1 , wherein the guide comprises one or more elongate members.3. The variable geometry turbine of claim 1 , further comprising:one or more vanes located in one or both inlet portions, the one or more vanes dividing an inlet portion into at least two inlet passages,and wherein the guide comprises:one or more edges of the one or more vanes.4. A variable geometry turbine comprising:a turbine wheel mounted for rotation about a turbine axis within a housing;the housing defining an annular inlet surrounding the turbine wheel and defined between ...
Подробнее