Engine having increased boost at low engine speeds

Claim 1

An engine having a plurality of operating speeds, one of said plurality of said operating speeds being a low speed and another of said plurality of said operating speeds being a high speed, an air induction system defining a flow of intake air therein and an exhaust system defining a flow of exhaust gas therein, said air induction system comprising: a plurality of turbochargers each having a turbine section defining a turbine being driven by said flow of exhaust gas, a shaft being attached to said turbine and driving a compressor wheel, said compressor wheel compressing said flow of intake air and densifying said flow of intake air; a plurality of directional control valves each having an outlet end, an inlet end being in fluid communication with said flow of intake air being compressed and densified by said compressor wheel, and at least one of said plurality of directional control valves having a second inlet end, said plurality of directional control valves being movable between an open position and a closed position, said flow of intake air entering said inlet end of a respective one of said plurality of directional control valves with said plurality of directional control valves being in said open position and said flow of intake air being prevented from entering said inlet end of a respective one of said plurality of directional control valves with said plurality of directional control valves being in said closed position; a supercharger having an inlet end and an outlet end, said inlet end being in fluid communication with said flow of intake air, said flow of intake air being compressed and densified by said plurality of turbochargers prior to being communicated to said supercharger, and said supercharger further compressing and densifying said intake air prior to exiting said outlet end, said outlet end being in fluid communication with said through inlet end of said at least one of said plurality of directional control valves; and a motor being drivingly connected to said supercharger, said motor having a variable rate of speed and said variable rate of speed varying a quantity of flow of said intake air from said supercharger to said engine.