Enhanced supercharging system and an internal combustion engine having such a system

An internal combustion engine, comprising:

• an air intake manifold for supply of combustion air to at least one combustion chamber;
• an exhaust manifold for discharge of exhaust gases from the at least one combustion chamber;
• a supercharging system including:
• i) a turbocharging device with a turbine wheel and a compressor, said turbine wheel and compressor being arranged along a common shaft,
• ii) a planetary gear set coupled to said common shaft and to a drive shaft, the planetary gear set comprising a sun gear, planet gear wheels, and a ring gear wheel, and
• iii) an electric motor/generator connected to said drive shaft, wherein,
• a turbine inlet is connected to the exhaust manifold for being subjected to exhaust gases, causing the turbine wheel to rotate and thereby, via the common shaft, causing an impeller of the compressor to rotate at the speed of the turbine wheel, thereby compressing ambient air for delivery to the engine air intake manifold;
• and
• a rotating engine drive shaft, wherein said rotating engine drive shaft, via a transmission, is connectable via a clutch unit to said drive shaft for transfer of rotation force for driving the compressor before the turbine has reached a lowest working area,
• wherein the supercharging system delivers compressed air to the internal combustion engine during engine operation,
• wherein the planetary gear set is located between the electric motor/generator and the compressor shaft,
• wherein said compressor shaft is connected to the sun gear of said planetary gear set, and
• wherein said drive shaft is connected to the ring gear wheel of said planetary gear set.

A supercharging system for an internal combustion engine, comprising:

• an exhaust gas propelled turbo supercharging system;
• a mechanical supercharging system;
• and
• an electrical supercharging/regenerating system, wherein,
• said exhaust gas propelled turbo supercharging system includes a turbine and a compressor, said compressor being arranged on a compressor shaft,
• said mechanical supercharging system couples a crank shaft of the engine to said compressor,
• said electrical supercharging/regenerating system couples an electric motor/generator to said compressor,
• said exhaust gas propelled turbo supercharging system, mechanical supercharging system, and electrical supercharging/regenerating system are arranged on a common axis including said compressor shaft and a drive shaft,
• said compressor shaft and said drive shaft is connected via a planetary gear set, the planetary gear set comprising a sun gear, planet gear wheels, and a ring gear wheel,
• said electric motor/generator is connected to said drive shaft,
• a power transmission connects a crankshaft of the internal combustion engine to said drive shaft via a clutch unit,
• wherein the supercharging system delivers compressed air to the internal combustion engine during engine operation,
• wherein the planetary gear set is located between the electric motor/generator and the compressor shaft,
• wherein said compressor shaft is connected to the sun gear of said planetary gear set, and
• wherein said drive shaft is connected to the ring gear wheel of said planetary gear set.