EP 0691465 A3 19960117 -
Publication
Application
Priority
DE 4423344 A 19940704
Abstract (en)
[origin: EP0691465A2] The detection system is used for the lambda probes for respective cylinder sets of an ic. engine employing separate catalysers and lambda regulation for each cylinder set. The fuel injection valves for at least one cylinder set are suppressed for the reaction or switching time of the lambda probes, with the lambda probe signal for the cut-out cylinder set compared with a threshold value at the end of this time and a side error indicated in dependence on this comparison. Pref. both lambda regulation systems are blocked when a side error is detected, with a fault display simultaneously activated. The testing can be effected via an external diagnosis device. <IMAGE>
IPC 1-7
IPC 8 full level
F02B 67/00 (2006.01); F01N 3/00 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01); F02D 45/00 (2006.01)
CPC (source: EP US)
F02D 41/1443 (2013.01 - EP US); F02D 41/1454 (2013.01 - EP US); F02D 41/1474 (2013.01 - EP US); F02D 41/1495 (2013.01 - EP US); F02D 41/2438 (2013.01 - EP US)
Citation (search report)
- [A] DE 4120426 A1 19920109 - MITSUBISHI ELECTRIC CORP [JP]
- [A] US 5182907 A 19930202 - KURODA SHIGETAKA [JP], et al
- [A] US 4980834 A 19901225 - IKEDA TATSUJI [JP], et al
- [A] US 4782690 A 19881108 - TERASAKA KATSUNORI [JP]
- [A] FR 2450354 A1 19800926 - PORSCHE AG [DE]
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0691465 A2 19960110; EP 0691465 A3 19960117; EP 0691465 B1 19970312; DE 4423344 A1 19960111; DE 59500133 D1 19970417; ES 2100757 T3 19970616; JP H0842386 A 19960213; US 5528932 A 19960625
DOCDB simple family (application)
EP 95107229 A 19950512; DE 4423344 A 19940704; DE 59500133 T 19950512; ES 95107229 T 19950512; JP 16746595 A 19950703; US 49525895 A 19950627