Control apparatus for internal combustion engine, has NOx prevention-control unit which implements NOx prevention control to suppress NOx amount during exhaustion, when catalyst has more than predetermined load during lean state

摘要

A lean state determination unit determines lean state of a catalyst (31) that stores oxygen quantities. A nitrogen oxide (NOx) prevention-control unit implements NOx prevention control for suppressing NOx amount during exhaustion, when catalyst has more than predetermined load at the time of lean state.