Drive system for turbochargers with rotary electric machines

Details Drive system for turbochargers with rotary electric machines Drive system for turbochargers with rotary electric machines

1990-07-12

1992-04-21

Koczo, Michael

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

60612, F02B 3704

Patent

active

051056240

ABSTRACT:
A turbocharger drive system associated with an internal combustion engine includes a plurality of turbochargers drivable by exhaust gases from the engine, a plurality of rotary electric machines mounted on the rotatable shafts, respectively, of the turbochargers and operable as electric motors or generators, and a single rotary electric machine coupled to the rotatable shaft of the engine. When the engine rotates at a low speed and under a high load, the rotary electric machine coupled to the engine shaft operates as an electric generator to generate electric power to drive the rotary electric machines mounted on the turbocharger shafts as electric motors, so that the boost pressure is increased to increase the output power of the engine. Since the multistage turbochargers are power-assisted by the respective rotary electric machines, the boost pressure builds up sharply. When the engine rotates at a high speed, the rotary electric machines combined with the turbochargers generate electric power to drive the rotary electric machine coupled to the engine shaft as an electric motor, thus feeding exhaust energy back to the engine output power.

REFERENCES:
patent: 3250068 (1966-05-01), Vulliamy
patent: 4745754 (1988-05-01), Kawamura
patent: 4886978 (1989-12-01), Kawamura
patent: 4955199 (1990-09-01), Kawamura

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