초록 ▼

A pressure balanced turbocharger rotating seal is provided by two piston rings mounted on the shaft of the turbocharger, one of the rings engaging a circumferential surface of the shaft bore in the center housing and the second ring engaging a circumferential surface of the shaft bore in the turbine

A pressure balanced turbocharger rotating seal is provided by two piston rings mounted on the shaft of the turbocharger, one of the rings engaging a circumferential surface of the shaft bore in the center housing and the second ring engaging a circumferential surface of the shaft bore in the turbine wheel shroud, with a passage for introducing pressurizing gas intermediate the two rings, the passage including a circumferential channel in the inner face of the turbine wheel shroud, and a compression seal engaged between the center housing and turbine wheel shroud outboard of the channel.

대표청구항 ▼

[ What is claimed is:] [1.] A seal for a turbine wheel shaft employed in a turbocharger comprising:a shaft supporting a turbine wheel and a compressor wheel, said shaft rotatably retained within a shaft bore extending through a center housing and a turbine wheel shroud;first and second seal rings mo

[ What is claimed is:] [1.] A seal for a turbine wheel shaft employed in a turbocharger comprising:a shaft supporting a turbine wheel and a compressor wheel, said shaft rotatably retained within a shaft bore extending through a center housing and a turbine wheel shroud;first and second seal rings mounted on the shaft proximate the turbine wheel, the first ring sealingly engaging a circumferential surface of the shaft bore in the center housing and the second ring sealingly engaging a circumferential surface of the shaft bore in the turbine wheel shroud;a passage for introducing a pressurizing gas, the passage communicating with the shaft bore intermediate the first and second piston rings;means for supplying pressurizing gas to the passage; anda compression seal engaged between the center housing and turbine wheel shroud outboard of the passage.