초록 ▼

This disclosure deals with a centripetal flow turbine housing including an intake opening for receiving a working fluid, a volute which conveys the fluid to a turbine wheel rotatably mounted within the housing, and an outlet opening co-axial with the wheel. A valve is provided adjacent the intake op

This disclosure deals with a centripetal flow turbine housing including an intake opening for receiving a working fluid, a volute which conveys the fluid to a turbine wheel rotatably mounted within the housing, and an outlet opening co-axial with the wheel. A valve is provided adjacent the intake opening, and two intake passages are formed in the housing between the valve and the volute. One of the intake passages is arranged concentrically around the other intake passage, and the intake passages merge ahead of the volute to form generally concentric aspirating nozzles. The valve is adjustable to one position where it directs all of the working fluid through one intake passage, and to a second position where it directs the working fluid through both intake passages. The turbine housing may be used with an internal combustion engine having a divided exhaust manifold to obtain pulse turbine operation, or it may be used with an internal combustion engine such as a two-cycle engine without a divided exhaust manifold to assist in starting and low speed engine performance.

대표청구항 ▼

A turbine housing for a centripetal flow turbine used with a driving fluid source which supplies varying volumes of said driving fluid, comprising means forming a first inlet passageway for receiving said fluid flow, a volute section formed from said first inlet passageway for discharging said fluid

A turbine housing for a centripetal flow turbine used with a driving fluid source which supplies varying volumes of said driving fluid, comprising means forming a first inlet passageway for receiving said fluid flow, a volute section formed from said first inlet passageway for discharging said fluid flow, means forming an additional inlet passageway for receiving said fluid flow and defining an outlet for directing said fluid flow in a direction which is substantially parallel to the direction of flow through said first inlet passageway, said additional inlet passageway being contained within said first inlet passageway and being at least partially surrounded by said first inlet passageway as viewed in a plane generally normal with respect to the flow through said additional inlet passageway, and valve means mounted adjacent the upstream ends of said inlet passageways, said valve means being adjustable from a first position where it directs all of said fluid flow through said additional inlet passageway, said additional inlet passageway being shaped to produce high velocity fluid flow in said volute section, to a second position where it allows said fluid flow through both of said passageways, and to positions intermediate between said first and second poSitions.