Internal combustion engine with a dual turbocharger system

Details Internal combustion engine with a dual turbocharger system Internal combustion engine with a dual turbocharger system

1991-01-22

1992-09-08

Koczo, Michael

Power plants

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

With supercharging means for engine

F02B 3712

Patent

active

051448033

ABSTRACT:
An internal combustion engine with a dual turbocharger system which includes an engine, a first and a second turbocharger arranged in parallel with each other, an intake switching valve located downstream of a compressor of the second turbocharger, an exhaust switching valve located downstream of a turbine of the second turbocharger, and an exhaust bypass valve installed an exhaust bypass conduit bypassing the exhaust switching valve. The exhaust bypass valve is opened on the basis of a charging pressure at low engine speeds and is opened on the basis of an intake air quantity at high engine speeds. As a result of controlling the exhaust bypass valve in this fashion, a smooth transition from a "one-turbocharger-operation" to a "two-turbocharger-operation" can be obtained throughout the entire range of engine speeds.

REFERENCES:
patent: 4793140 (1988-12-01), Esch
patent: 4982567 (1991-01-01), Hashimoto et al.
patent: 5003781 (1991-04-01), Shibata et al.
patent: 5005359 (1991-04-01), Tashima et al.
patent: 5035114 (1991-07-01), Shibata et al.

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