| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize good control characteristics even in the abrupt change of a target fuel pressure in the high-pressure fuel pump of a direct-injection engine. <P>SOLUTION: An engine ECU performs a program including a step (S210) of prohibiting the calculation of an integration item Qi when it detect the abrupt change of a target fuel pressure P (O) (YES in S200), a step (S230) of detecting an actual fuel pressure (S220) and calculating a fuel pressure difference ΔP by deducting an actual fuel pressure from a target fuel pressure P(O), and a step (S250) of allowing the calculation of the integration item Qi when the fuel pressure difference ΔP becomes less than a threshold (YES in S240). <P>COPYRIGHT: (C)2007,JPO&INPIT |
