초록

A variable flow geometry, meridionally divided turbine housing for use in an exhaust gas driven turbine of a turbocharger.

대표청구항 ▼

A turbocharger comprising a compressor; and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridonal septum dividing said inlet and scroll-shaped p

A turbocharger comprising a compressor; and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridonal septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means formed integrally with said turbine housing for closing a portion of the radially inner boundary of said primary paths and for defining a radially inwardly open secondary flow path in communication with said primary paths, and valve means disposed along the secondary flow path and controllably movable between a first position opening said secondary path to allow fluid flow through both said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow.