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

1991-03-07

1993-02-16

Koczo, Michael

Power plants

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

With supercharging means for engine

60612, F02B 3712

Patent

active

051860058

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. The engine operation is changed between a "one-turbocharger-operation" wherein only the first turbocharger is operated and a "two-turbocharger-operation" wherein both the first turbocharger and the second turbocharger are operated. Change from the "one-turbocharger-operation" to the "two-turbocharger-operation" is performed on the basis of an intake air quantity, and change from the "two-turbocharger-operation" to the "one-turbocharger-operation" is performed on the basis of an engine speed. This type of change suppresses a torque shock at shift changing during acceleration and improves the drive feeling.

REFERENCES:
patent: 3038297 (1962-06-01), Kauffmann
patent: 4474008 (1984-10-01), Sakurai et al.
patent: 4781027 (1988-11-01), Richter et al.
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
patent: 5036663 (1991-08-01), Akagi et al.

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