| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an internal state estimation apparatus for an intake air collector, which can more accurately estimate an internal state of the intake air collector by considering influences of a temperature difference before and after an intercooler, and thereby improves precision of diagnosis. <P>SOLUTION: The internal state estimation apparatus includes: a supercharger 22 which forcibly feeds air sucked into an engine; an intake air collector 26 which is positioned downstream from the supercharger; an intercooler 27 which is provided inside the intake air collector and cools the air forcibly fed by the supercharger and temperature-elevated; a pre-cooling temperature detection part (24) which is provided upstream from the intercooler and detects a temperature of the air forcibly fed by the supercharger and before cooled by the intercooler; a post-cooling temperature detection part 28 which is provided downstream from the intercooler and detects a temperature of the air cooled by the intercooler; and a representative temperature estimation part B101 which estimates a representative temperature inside the intake air collector on the basis of the pre-cooling temperature and the post-cooling temperature. <P>COPYRIGHT: (C)2013,JPO&INPIT |
