F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
60/15
F02B 37/00 (2006.01) F01D 25/12 (2006.01) F02B 39/00 (2006.01) F02C 6/12 (2006.01)
Patent
CA 1071881
EBULLIENT COOLED TURBOCHARGER BEARING HOUSING ABSTRACT OF THE DISCLOSURE A turbocharged internal combustion engine system in- cluding a liquid-cooled internal combustion engine, a heat exchanger for cooling the liquid, a pump for pumping cooled liquid from the heat exchanger to the engine, and a turbocharger including a rotary turbine and a rotary compressor, a housing containing the turbine and the compressor, a shaft interconnecting the turbine and the compressor and bearings journalling the shaft within the housing between the turbine and compressor. Exhaust gases from the engine are directed through the turbine to drive the same and air from the compressor is directed to the engine. A liquid passage is located in the turbocharger housing and is operatively interposed between the turbine and the bearing. The passage has a lower inlet and an upper outlet and liquid coolant from the engine is directed to the inlet. Coolant from the output is directed to the heat exchanger or other suitable compartment in the engine coolant system so as to allow flow while the engine is operating and under the following conditions. Thermosiphoning of the coolant will occur through the passage when the engine is not operative, resulting in ebullient cooling of the housing immediate- ly adjacent the bearings when the engine is not operating. As a result, thermal damage to the bearings is prevented and coking of the residual oil on the inside walls of the housing is also pre- vented. - 1 -
287828
Gordon Phillip B. (jr.)
Hunt Keats E.
LandOfFree
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