Ejector-based cooling system for turbochargers
AssigneeHoneywell International Inc.
InventorNidal A. Ghizawi
Life of this patent
Estimating the term…
Abstract
A turbocharger component cooling system employs an ejector using energizing gas from the turbocharger system to draw cooling fluid through a plenum around the component to be cooled into the secondary inlet of the ejector and dumping the combined energizing and cooling gas flows into a low pressure dump. Energizing gas is drawn from the high pressure side of the compressor or turbine flows in the turbocharger and returned to the low pressure side in the same flow.
Claims26
A turbocharger component cooling system comprising:
- an ejector having a primary inlet, a secondary inlet and an outlet;
- an energizing gas conduit connecting a first bleed port from a high energy gas source and the primary inlet;
- a cooling gas conduit having a first element connecting a coolant inlet to a component cooling plenum and a second element connecting the cooling plenum to the secondary inlet;
- and
- an outlet gas conduit connecting the ejector outlet to a low pressure dump.
A turbocharger component cooling system comprising:
- an ejector having a primary inlet, a secondary inlet and outlet;
- means for providing a high energy gas stream to the primary inlet;
- means for supplying a cooling gas stream through a component cooling plenum in the turbocharger to the secondary inlet;
- and
- means for dumping the ejector outlet.
A cooled air bearing turbocharger system comprising:
- a turbine carried within a turbine housing having an exhaust gas inlet and an outlet;
- a compressor carried within a compressor housing having an air inlet and a charge air outlet, the compressor interconnected to the turbine by a shaft;
- a center housing interconnecting the turbine housing and compressor housing and carrying an air bearing system in a cooling plenum, the air bearing supporting the shaft;
- an ejector having a primary inlet, a secondary inlet and outlet;
- an energizing gas conduit connecting a first bleed port from a high energy gas source and the primary inlet;
- a cooling gas conduit having a first element connecting a coolant inlet to the cooling plenum and a second element connecting the cooling plenum to the secondary inlet;
- and
- an outlet gas conduit connecting the ejector outlet to a low pressure dump.
A cooled electrically assisted turbocharger system comprising:
- a turbine carried within a turbine housing having an exhaust gas inlet and an outlet;
- a compressor carried within a compressor housing having an air inlet and a charge air outlet, the compressor interconnected to the turbine by a shaft, the shaft carrying a rotor for an electric motor;
- a center housing interconnecting the turbine housing and compressor housing and carrying a stator in operating relation with the rotor, the stator and rotor surrounded by a cooling plenum, the center housing further having a bearing supporting the shaft;
- an ejector having a primary inlet, a secondary inlet and outlet;
- an energizing gas conduit connecting a first bleed port from a high energy gas source and the primary inlet;
- a cooling gas conduit having a first element connecting a coolant inlet to the cooling plenum and a second element connecting the cooling plenum to the secondary inlet;
- and
- an outlet gas conduit connecting the ejector outlet to a low pressure dump.
Dependencies are inferred from the claim text.