| 摘要 |
<P>PROBLEM TO BE SOLVED: To sufficiently secure the purge amount of a fuel evaporation gas in an internal combustion engine mounted in a hybrid automobile. <P>SOLUTION: In an internal combustion engine device 21 included in the hybrid automobile 20, when the concentration Cpg of fuel evaporation gas showing the degree of the purge requirement is a threshold Cref or higher, the correction (Step S370) of the base EGR amount Vb based on the concentration Cpg and intake negative pressure Pi of the fuel evaporation gas using a map for setting a required intake negative pressure (Step S350) and a map for setting an EGR weight reduction amount (Step S360) is performed, and an EGR valve 143 of an EGR tube 142 is controlled (Steps S310, S350-S380). Thus, the target EGR amount Vegr* (recirculation amount of exhaust gas) is set so that the negative pressure in an intake pipe 126 becomes a value responsive to the concentration Cpg of the fuel evaporation gas. <P>COPYRIGHT: (C)2008,JPO&INPIT |
