Method of controlling supercharging pressure in internal combust

Details Method of controlling supercharging pressure in internal combust Method of controlling supercharging pressure in internal combust

1988-12-22

1990-01-09

Koczo, Michael

Power plants

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

With supercharging means for engine

F02B 3712

Patent

active

048919470

ABSTRACT:
A method of controlling supercharging pressure in an internal combustion engine, wherein the supercharging pressure is controlled by controlling a control amount for operating a supercharging pressure control device. The control amount is controlled in feedback control mode responsive to the difference between the actual value of the supercharging pressure and a desired value thereof when the supercharging pressure is in a steady state, and at the same time a learned value of the correction value is obtained by calculating values of same applied during the feedback control. The control amount is controlled in open loop control mode based upon the learned value when the supercharging pressure is in a transient state. The calculation of the learned value is inhibited when a predetermined condition is satisfied during the steady state. The predetermined condition is satisfied when the desired value of the supercharging pressure is set to a different value than a normal value set during the steady state.

REFERENCES:
patent: 4709553 (1987-12-01), Ueno et al.
patent: 4732003 (1988-03-01), Ueno et al.

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