Charging pressure control apparatus for an internal combustion e

Details Charging pressure control apparatus for an internal combustion e Charging pressure control apparatus for an internal combustion e

1992-07-31

1994-03-01

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

052896846

ABSTRACT:
A charging pressure control apparatus including a first duty control solenoid valve for controlling the opening degree of an exhaust bypass valve to thereby control a charging pressure during "one-turbocharger-operation", and a second duty control solenoid valve for controlling the opening degree of a waste gate valve to thereby control a charging pressure during "two-turbocharger-operation". The operating conditions at high altitudes of the first duty control solenoid valve and the second duty control solenoid valve are made different from those at low altitudes so that the power characteristic of the turbocharged engine is as good at high altitudes as at low altitudes.

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