EP 1054149 A2 20001122 - Controller of internal combustion engine
Title (en)
Controller of internal combustion engine
Title (de)
Steuerer eines Verbrennungsmotors
Title (fr)
Contrôleur de moteur à combustion interne
Publication
Application
Priority
JP 13748699 A 19990518
Abstract (en)
An internal combustion engine has a reduction occlusion type NOx catalyst located in an exhaust passage for adsorbing NOx. A controller of the engine temporarily discontinues a lean combustion mode when a predetermined condition is satisfied during the lean combustion mode. When the amount of NOx adsorbed in the catalyst is greater than an acceptable value, the controller executes a rich-spike control procedure to reduce NOx adsorbed in the catalyst by temporarily switching the combustion mode of the engine to a rich combustion mode. The controller determines whether the amount of NOx adsorbed in the catalyst is greater than a predetermined determination value, which is smaller than the acceptable value, when lean combustion is discontinued. When the amount of NOx adsorbed in the catalyst is determined to be greater than the determination value, the controller executes rich-spike control procedure. <IMAGE>
IPC 1-7
IPC 8 full level
B60T 17/00 (2006.01); B60W 10/04 (2006.01); B60W 10/06 (2006.01); B60W 10/18 (2006.01); B60W 10/184 (2012.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/24 (2006.01); F01N 3/28 (2006.01); F02D 29/00 (2006.01); F02D 41/02 (2006.01); F02D 41/04 (2006.01); F02D 41/14 (2006.01); F02D 45/00 (2006.01)
CPC (source: EP KR)
F01N 3/0842 (2013.01 - EP KR); F02D 41/0275 (2013.01 - EP KR); F02D 41/1475 (2013.01 - EP KR); F02D 41/3064 (2013.01 - KR); F02D 2200/0806 (2013.01 - EP KR); F02D 2250/41 (2013.01 - EP KR)
Citation (applicant)
JP H07332071 A 19951219 - TOYOTA MOTOR CORP
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1054149 A2 20001122; EP 1054149 A3 20020717; JP 2000328984 A 20001128; JP 3259711 B2 20020225; KR 20000077305 A 20001226
DOCDB simple family (application)
EP 00110504 A 20000517; JP 13748699 A 19990518; KR 20000026453 A 20000517