Supercharging pressure control method for internal...

F - Mech Eng,Light,Heat,Weapons – 04 – F

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123/22, 341/39,

F04F 13/00 (2009.01) F02B 37/12 (2006.01) F02B 37/18 (2006.01) F02B 37/24 (2006.01) F02D 33/02 (2006.01) F02D 41/00 (2006.01)

Patent

CA 1308974

ABSTRACT OF THE DISCLOSURE 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.

587159

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