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A hydraulically operated charge air system for an internal combustion engine includes an intake manifold having a number of intake runners, and a number of rotatable airflow control devices mounted within at least a portion of the intake runners. A hydraulic motor rotatably positions the airflow con

A hydraulically operated charge air system for an internal combustion engine includes an intake manifold having a number of intake runners, and a number of rotatable airflow control devices mounted within at least a portion of the intake runners. A hydraulic motor rotatably positions the airflow control devices.

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1. A hydraulically operated charge air system for an internal combustion engine, comprising: an intake manifold having a plurality of intake runners;a plurality of rotatable airflow control devices mounted within at least a portion of said intake runners; anda hydraulic motor for rotatably positioni

1. A hydraulically operated charge air system for an internal combustion engine, comprising: an intake manifold having a plurality of intake runners;a plurality of rotatable airflow control devices mounted within at least a portion of said intake runners; anda hydraulic motor for rotatably positioning said airflow control devices, wherein said hydraulic motor comprises a vane motor having a multi-lobed rotor container within a housing mounted to said intake manifold, with said rotor being coupled to a rotatable shaft carrying said rotatable airflow control devices. 2. A charge air system according to claim 1, wherein said intake manifold has a plurality of short intake runners and a plurality of long intake runners. 3. A charge air system according to claim 2, wherein said rotatable airflow control devices are mounted within said short intake runners. 4. A charge air system according to claim 1, wherein said rotatable airflow control devices comprise both charge motion control valves and runner control valves. 5. A charge air system according to claim 1, wherein said rotatable airflow control devices comprise charge motion control valves configured as plate valves, with each plate valve having a control area which is less than the flow area of the intake runner into which the plate valve is mounted. 6. A charge air system according to claim 1, wherein said rotatable airflow control devices comprise runner control valves. 7. A charge air system according to claim 1, wherein said multi-lobed rotor has two lobes with an included angle of about 140°. 8. A hydraulically operated charge air system for an internal combustion engine, comprising: an intake manifold having a plurality of intake runners;a plurality of airflow control devices carried upon a rotatable shaft, comprising charge motion control valves mounted within said intake runners adjacent an intake manifold mounting flange; anda hydraulic motor for rotatably positioning said rotatable shaft, wherein said hydraulic motor comprises a vane motor having a multi-lobed rotor contained within a housing mounted to said intake manifold and powered by an engine lubrication pump. 9. A hydraulically operated charge air system according to claim 8, wherein each of said charge motion control valves is configured as a plate valve with a control area which is less than the flow area of the intake runner within which the plate valve is mounted. 10. A hydraulically operated charge air system according to claim 9, wherein each of said plate valves is configured with a control area approximating 75 percent of the flow area of the intake runner within which the plate valve is mounted. 11. A hydraulically operated charge air system for an internal combustion engine, comprising: an intake manifold having a plurality of shorter intake runners and a plurality of longer intake runners;a plurality of rotatable airflow control devices, comprising runner control plate valves mounted upon a rotatable shaft within at least a portion of said intake runners; anda hydraulic vane motor comprising a multi-lobed rotor contained within a housing mounted to said intake manifold for rotatably positioning said rotatable shaft, wherein said hydraulic motor is powered by an engine lubrication pump. 12. A hydraulically operated charge air system according to claim 11, wherein each of said runner control valves is mounted within one of said shorter intake runners. 13. A hydraulically operated charge air system according to claim 11, wherein said runner control valves are mounted adjacent an intake manifold mounting flange.