Egr system for internal combustion engine and method for controlling the same

作者: Masahiro Nagae , Hajime Shimizu , Hiroyuki Haga

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摘要: An EGR system includes a high-pressure unit and low-pressure unit. During the steady operation of an internal combustion engine, gas are mixed with each other at mixture ratio, in which ratio amount to entire is higher than that known then recirculated back engine. In engine speed-up transitional period, opening valve adjusted Oht2 much smaller target Ohsfc2 corresponding mode. Thus, it possible suppress occurrence situation where excessive period Δt23 does not decrease by sufficient amount.