公开(公告)号：US5657625A

公开(公告)日：1997-08-19

申请号：US490077

申请日：1995-06-13

申请人： Kazuo Koga ,  Kojiro Okada ,  Yoshiaki Danno ,  Kazuhide Togai ,  Osamu Hirako ,  Shogo Ohmori ,  Daisuke Sanbayashi ,  Yoshiaki Kodama

发明人： Kazuo Koga ,  Kojiro Okada ,  Yoshiaki Danno ,  Kazuhide Togai ,  Osamu Hirako ,  Shogo Ohmori ,  Daisuke Sanbayashi ,  Yoshiaki Kodama

IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/30 ,  F01N3/36 ,  F01N3/38 ,  F01N9/00 ,  F01N13/02 ,  F01N13/04 ,  F01N13/08 ,  F02D35/00 ,  F02D41/02 ,  F01N3/00

CPC分类号： F01N9/005 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/2006 ,  F01N3/2033 ,  F02D35/0015 ,  F02D41/028 ,  F01N13/08 ,  F01N2250/12 ,  F01N2260/04 ,  F01N2260/14 ,  F01N2410/00 ,  F01N2430/06 ,  F01N2570/04 ,  F01N2570/12 ,  F01N2610/03 ,  F01N2900/102 ,  F01N3/30 ,  F01N3/36 ,  F01N3/38 ,  Y02T10/26 ,  Y02T10/47

摘要： An apparatus for controlling an internal combustion engine having an exhaust purifying catalytic device which absorbs nitrogen oxides contained in exhaust when the engine is in a lean-combustion mode and which deoxidizes the absorbed nitrogen oxides when the engine is in a rich-combustion mode. The engine control apparatus includes an electronic control unit for estimating the amount of purifying capability reducing substances other than nitrogen oxides, which decreases the nitrogen oxide adsorbing ability of the catalytic device, absorbed by the catalytic device, on the basis of the accumulated value of vehicle travel distance, fuel consumption of engine, or intake air amount. The control unit changes the operating condition of engine so that the exhaust gas temperature is increased when it is judged that the estimated adsorption amount has reached a predetermined adsorption amount. The exhaust purifying catalytic device is heated by high-temperature exhaust gas to remove the purifying capability reducing substances from the catalytic device.

摘要翻译： 一种用于控制具有排气净化催化装置的内燃机的装置，其在发动机处于稀燃模式时吸收废气中所含的氮氧化物，并且在发动机处于浓燃烧模式时使吸收的氮氧化物脱氧。 发动机控制装置包括：电子控制单元，用于估计氮氧化物以外的净化能力降低物质的量，其降低由催化装置吸收的催化装置的氮氧化物吸附能力，基于车辆的累积值 行驶距离，发动机燃油消耗量或进气量。 控制单元改变发动机的运转状态，从而当判断出吸附量达到规定的吸附量时，排气温度上升。 排气净化催化装置由高温废气加热，以从催化装置中除去净化能力降低物质。