F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
123/21
F02B 37/12 (2006.01) F02B 37/18 (2006.01) F02B 37/24 (2006.01) F02B 39/12 (2006.01) F02D 41/00 (2006.01) F02D 41/24 (2006.01)
Patent
CA 1314180
ABSTRACT OF THE DISCLOSURE A method of controlling supercharging pressure in an internal combustion engine. The supercharging pressure is controlled based on a basic control amount determined in dependence on operating conditions of the engine. When the transmission is in a lower speed position, the basic control amount is corrected so that the supercharging pressure is lower than a value assumed when the transmission is in a higher speed position. When the engine is in a feedback control mode, the basic control amount is corrected in response to the difference between the actual supercharging pressure and a desired value of same. The desired value of the supercharging pressure is set lower when the transmission is in the lower speed position than a value assumed when the transmission is in a higher speed position. When the transmission is in the lower speed position, the rising speed of the supercharging pressure in a transient states is set lower than a value assumed when the transmission is in a higher speed position. The basic control amount is corrected so as to decrease the supercharging pressure, and/or the desired supercharging pressure value is decreased, when the engine rotational speed changes from a state in which it increases to a state in which it decreases. When the engine is in a particular operating condition, a control amount determined by the basic control amount is corrected so that the supercharging pressure is lower than a value assumed when the engine is in another condition, and thereafter the supercharging pressure is continuously held at such lowered value over a predetermined time period after the engine has left the particular condition. When the intake air temperature is below a predetermined value, and at the same time the engine rotational speed is above a predetermined value, the supercharging pressure is set lower than a value assumed when the engine rotational speed is below the predetermined value.
587156
Akiyama Eitetsu
Inoue Kazuo
Kashiwabara Shigeto
Kishi Noriyuki
Kubodera Masao
Honda Giken Kogyo Kabushiki Kaisha (also Trading As Honda Motor Ltd .)
Smart & Biggar
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