| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce oil-tightness while a cylinder injection internal combustion engine is stopped. <P>SOLUTION: A fuel pressure control means 35 comprises: a feedback control part 36 setting feedback controlled variables (F/B controlled variables) depending on deviation between target fuel pressure and actual fuel pressure; and a feed forward control part 37 setting feedforward controlled variables (F/F controlled variables) depending on a request fuel injection amount and an engine revolution speed Ne. When engine operational status is a non-idling status, an F/F-F/B combination control is performed. In the F/F-F/B combination control, output of the feedforward control part 37 (F/F controlled variables) is validated and the F/F controlled variables is added to the F/B controlled variables so as to set controlled variables of a high-pressure pump 14. On the other hand, when the engine operational status is transited from the non-idling status to an idling status, the F/F-F/B combination control is changed to an F/B control, in which the output of the feedforward control part 37 (F/F controlled variables) is invalidated and only the output of the feedback control part 36 (F/B controlled variables) is used. <P>COPYRIGHT: (C)2007,JPO&INPIT |
