| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve engine characteristics in a transient condition. <P>SOLUTION: There is provided an engine control method which includes: acquiring a set value A of a fuel injection quantity to an engine having an exhaust circulator and variable nozzle turbo, a set value B of an engine speed, a measured value C of engine intake pressure and a measured value D of fresh air quantity; acquiring a target value E of the intake pressure and a target value F of the fresh air quantity corresponding to the set value A and B and a target value G of the nozzle opening of the variable nozzle turbo and a target value H of valve opening of the exhaust circulator corresponding to the set value A and B; calculating a correction amount H of the target value E corresponding to variation in the measured value C per unit time or variation in the target value E per unit time; calculating a controlled variable J of the nozzle opening of the variable nozzle turbo and a controlled variable K of the valve opening of exhaust circulator based on the target value E and F, the measured vales C and D and the correction amount H; and calculating a command value of the nozzle opening of the variable nozzle turbo and a command value of the valve opening of the exhaust circulator based on the controlled variables J and K and the target values G and H. <P>COPYRIGHT: (C)2012,JPO&INPIT |
