Method for controlling supercharging pressure in an automotive e

Details Method for controlling supercharging pressure in an automotive e Method for controlling supercharging pressure in an automotive e

1993-07-01

1994-03-01

Koczo, Michael

Power plants

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

With supercharging means for engine

F02B 3712

Patent

active

052896838

ABSTRACT:
An automotive engine has a turbocharger, a wastegate valve for controlling flow rate of exhaust gas applied to a turbine of the turbocharger, and an actuator for controlling the wastegate valve. A standard supercharging pressure is determined dependent on characteristics of the wastegate valve, and a desired supercharging pressure is set in accordance with engine operating conditions. A difference between the desired supercharging pressure and the standard supercharging pressure is calculated, and a ratio of the difference to a detected actual supercharging pressure is calculated. From the calculated ratio, a control value applied to the actuator is calculated.

REFERENCES:
patent: 4646522 (1987-03-01), Mamiya et al.
patent: 4697421 (1987-10-01), Otobe et al.
patent: 4741163 (1988-05-01), Hidaka et al.
patent: 4756161 (1988-07-01), Hirabayashi
patent: 5031406 (1991-07-01), Akiyama

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