发明名称 |
Control Device for Engine |
摘要 |
Provided is a control device for an engine which is capable of purifying NOx with high efficiency at a restart after an idle stop without deteriorating purification efficiency of HC and CO. At the restart after the idle stop, an air-fuel ratio is controlled to be rich, and an atmosphere inside of a catalyst is estimated on the basis of a required time &Dgr;T from a time point at which an output value (VO2—2) of first oxygen concentration detection means upstream of the catalyst exceeds a predetermined value A1 to a time point at which an output value (VO2—2) of second oxygen concentration detection means downstream of the catalyst exceeds a predetermined value A2, whereby an air-fuel ratio at next and subsequent restarts is corrected so that the atmosphere inside of the catalyst is optimized at the next and subsequent restarts. |
申请公布号 |
US2011315108(A1) |
申请公布日期 |
2011.12.29 |
申请号 |
US201013202350 |
申请日期 |
2010.02.04 |
申请人 |
NAKAGAWA SHINJI;KANETOSHI KAZUHIKO;KATOUGI KOUZO;ICHIHARA TAKANOBU;OHSUGA MINORU;TAKAMURA HIROYUKI;HITACHI AUTOMOTIVE SYSTEMS, LTD. |
发明人 |
NAKAGAWA SHINJI;KANETOSHI KAZUHIKO;KATOUGI KOUZO;ICHIHARA TAKANOBU;OHSUGA MINORU;TAKAMURA HIROYUKI |
分类号 |
F02N11/08 |
主分类号 |
F02N11/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|