초록 ▼

A low speed high pressure ration turbocharger incorporates a compressor impeller having impeller blades for a first stage of compression mounted on a first side of the wheel and impeller blades for a second stage of compression mounted on a second side of the wheel. Driving the dual sided compressor

A low speed high pressure ration turbocharger incorporates a compressor impeller having impeller blades for a first stage of compression mounted on a first side of the wheel and impeller blades for a second stage of compression mounted on a second side of the wheel. Driving the dual sided compressor impeller on a common shaft from the turbine wheel allows reduction in rotational speeds while increasing compression ratio of the turbine. The scroll inlet and outlet volute for the second stage inducer are integrated with the compressor housing or other portions of the turbocharger case for compact packaging.

대표청구항 ▼

[ What is claimed is:] [1.] A turbocharger comprising:a case having a turbine housing receiving exhaust gas from an exhaust manifold of an internal combustion engine at an inlet and having an exhaust outlet, a compressor housing having an air inlet and a first volute, and a center housing intermedia

[ What is claimed is:] [1.] A turbocharger comprising:a case having a turbine housing receiving exhaust gas from an exhaust manifold of an internal combustion engine at an inlet and having an exhaust outlet, a compressor housing having an air inlet and a first volute, and a center housing intermediate the turbine housing and compressor housing;a turbine wheel carried within the turbine housing and extracting energy from the exhaust gas, said turbine wheel connected to a shaft extending from the turbine housing through a shaft bore in the center housing;a bearing supported in the shaft bore of the center housing, said bearing supporting the shaft for rotational motion;a compressor impeller connected to the shaft opposite the turbine wheel and carried within the compressor housing, said compressor impeller having a first plurality of impeller blades mounted on a front face proximate the air inlet, said first plurality of blades increasing the velocity of air from the air inlet and exhausting air into the first volute, said compressor impeller also having a second plurality of impeller blades mounted on a back face, said second plurality of blades increasing the velocity of air from a scroll inlet connected to the first volute, and exhausting air into a second volute having a charge air outlet connected to an inlet manifold for the engine, said scroll inlet and second volute integral to the case intermediate said compressor housing and turbine housing.