Actuator for controlling intake pressure in sequential turbo-sys

Details Actuator for controlling intake pressure in sequential turbo-sys Actuator for controlling intake pressure in sequential turbo-sys

1989-10-02

1991-11-12

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

050637444

ABSTRACT:
In a sequential turbocharger system having a first stage large volume turbo-charger and a second stage small volume turbocharger, a diaphragm actuator is provided for an exhaust bypass valve bypassing a turbine of the small volume turbocharger. The diaphragm actuator has a two step characteristic in relation to an opening of the exhaust bypass valve, so that an increased speed of opening of the exhaust bypass valve is obtained when the pressure downstream of the compressor of the first turbocharger is equal to the pressure downstream of the compressor of the second turbocharger.

REFERENCES:
patent: 4283912 (1981-08-01), Cholvin

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