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

1990-10-24

1992-01-21

Koczo, Michael

Power plants

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

With supercharging means for engine

60600, F02B 3712

Patent

active

050818422

ABSTRACT:
An internal combustion engine with a dual turbocharger system includes a first turbocharger and a second turbocharger arranged in parallel with each other. An exhaust switching valve is installed in an exhaust conduit downstream of a turbine of the second turbocharger and is actuated by a single diaphragm actuator. An exhaust bypass conduit is provided so as to bypass the exhaust switching valve, and an exhaust bypass valve is installed in the exhaust bypass conduit. Before the operation is changed from "one-turbocharger-operation" to "two-turbocharger-operation", the exhaust bypass valve is opened before the exhaust switching valve is opened, to suppress a shock which may occur at the transition from the "one-turbocharger-operation" to "two-turbocharger-operation".

REFERENCES:
patent: 4781027 (1988-11-01), Richter et al.
patent: 5003781 (1991-04-01), Shibata et al.
patent: 5005359 (1991-04-01), Tashima et al.
patent: 5020327 (1991-06-01), Tashima et al.

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