TURBOCHARGED ENGINE EMPLOYING CYLINDER DEACTIVATION

1 . An engine assembly comprising:

an intake assembly;

a spark-ignited internal combustion engine coupled with the intake assembly and defining a plurality of cylinders that are configured to combust a fuel;

an exhaust assembly in fluid communication with the plurality of cylinders;

a turbocharger including:

a dual-inlet compressor in fluid communication with the intake assembly;

a dual-scroll turbine in fluid communication with the exhaust assembly; and

wherein the dual-inlet compressor and dual-scroll turbine are operatively connected through a shaft.

2 . The engine assembly of claim 1 , wherein the plurality of cylinders includes a first subset of cylinders and a second subset of cylinders;

wherein the second subset of cylinders are configured to be selectively deactivate to stop combusting the fuel, while the first subset of cylinders continue combusting the fuel.

3 . The engine assembly of claim 2 , wherein the exhaust assembly includes a first exhaust manifold in fluid communication with the first subset of cylinders; and

wherein the exhaust assembly includes a second exhaust manifold in fluid communication with the second subset of cylinders.

4 . The engine assembly of claim 3 , wherein the dual-scroll turbine includes a housing and turbine wheel disposed within the housing, wherein the housing defines a first scroll and a second scroll;

wherein both the first scroll and the second scroll are circumferentially disposed around a portion of the turbine wheel and in fluid communication with the turbine wheel; and

wherein the first scroll is in fluid communication with the first exhaust manifold, and the second scroll is in fluid communication with the second exhaust manifold.

5 . The engine assembly of claim 2 , wherein the dual-inlet compressor is configured to provide a compressed supply of air through the intake assembly and to the first subset of cylinders when the second subset of cylinders are deactivated.

6 . The engine assembly of claim 5 , wherein the compressed supply of air has a pressure greater than atmospheric pressure.

7 . The engine assembly of claim 1 , wherein the dual-inlet compressor includes a compressor housing and a dual-sided impeller disposed within the compressor housing

wherein the compressor housing defines a first inlet, a second inlet, and an outlet, the outlet being in direct communication with the intake assembly; and

wherein the dual-sided impeller includes a first blade arrangement on a first side of the impeller, and a second blade arrangement disposed on a second side of the impeller.

8 . The engine assembly of claim 7 , wherein the compressor housing defines a first flow path between the first inlet and the first blade arrangement of the impeller, and a second flow path between the second inlet and the second blade arrangement of the impeller.

9 . An engine assembly comprising:

an intake assembly;

a spark-ignited internal combustion engine coupled with the intake assembly and defining a first plurality of cylinders and a second plurality of cylinders;

an exhaust assembly including a first exhaust manifold in fluid communication with the first plurality of cylinders and a second exhaust manifold in fluid communication with the second plurality of cylinders;

a turbocharger including:

a dual-inlet compressor in fluid communication with the intake assembly;

a dual-scroll turbine in fluid communication with the exhaust assembly;

wherein the dual-inlet compressor and dual-scroll turbine are operatively connected through a shaft; and

wherein the spark-ignited internal combustion engine is configured to selectively operate in a cylinder deactivation mode where fuel is combusted only in the first plurality of cylinders.

10 . The engine assembly of claim 9 , wherein the dual-scroll turbine includes a housing and turbine wheel disposed within the housing, wherein the housing defines a first scroll and a second scroll;

wherein both the first scroll and the second scroll are circumferentially disposed around a portion of the turbine wheel and in fluid communication with the turbine wheel; and

wherein the first scroll is in fluid communication with the first exhaust manifold, and the second scroll is in fluid communication with the second exhaust manifold.

11 . The engine assembly of claim 9 , wherein the dual-inlet compressor includes a compressor housing and a dual-sided impeller disposed within the compressor housing

wherein the compressor housing defines a first inlet, a second inlet, and an outlet, the outlet being in direct communication with the intake assembly; and

wherein the dual-sided impeller includes a first blade arrangement on a first side of the impeller, and a second blade arrangement disposed on a second side of the impeller.

12 . The engine assembly of claim 11 , wherein the compressor housing defines a first flow path between the first inlet and the first blade arrangement of the impeller, and a second flow path between the second inlet and the second blade arrangement of the impeller.

13 . The engine assembly of claim 9 , wherein the dual-inlet compressor is configured to provide a compressed supply of air through the intake assembly and to only the first plurality of cylinders when the spark-ignited internal combustion engine is operating in the cylinder deactivation mode.

14 . The engine assembly of claim 13 , wherein the compressed supply of air has a pressure greater than atmospheric pressure.