| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for restraining air in an intake passage from flowing into an exhaust passage by a backflow through an EGR passage, when an acceleration is requested to close an EGR valve and to open a throttle valve during execution of EGR. <P>SOLUTION: An EGR control device is applied to a hybrid system to output torque by at least one of an internal combustion engine and a motor, has the EGR passage, the EGR valve and the throttle valve, starts valve closing control as to the EGR valve, when control is requested to close the EGR valve and to open the throttle valve under the operation condition where the EGR valve is opened, conducts transition time valve control to open the throttle valve up to a prescribed opening degree in a closed side more than a required opening degree in the control request, during a period until the EGR valve finishes the valve closing, and to open the throttle valve up to the required opening degree after the EGR valve finishes the valve closing, and conducts assist control to output torque corresponding to insufficient torque, by the motor, when output torque of the internal combustion engine is insufficient with respect to the required torque when executing the transition time valve control. <P>COPYRIGHT: (C)2010,JPO&INPIT |
