Supercharging pressure control method for internal combustion engines.

摘要

A method of controlling supercharging pressure in an internal combustion engine having a supercharger having an increase rate-varying device for varying an increase rate of the supercharging pressure. The supercharging pressure is controlled to a desired value in response to a difference between an actual value of the supercharging pressure and the desired value. The increase rate-varying device is held in a position for obtaining the maximum increase rate of the supercharging pressure while the actual value of the supercharging pressure is below a predetermined value which is lower than the above desired value. The predetermined value is set to a lower value as the increase rate of the supercharging pressure is larger, or when a transmission of the engine is in a lower speed position than when the transmission is in a higher speed position. Also, the predetermined value of the supercharging pressure is set to a lower value as an actual intake air temperature is lower.