EP 0860597 A3 19991215 - Method to detect correctly connected lambda sensors
Title (en)
Method to detect correctly connected lambda sensors
Title (de)
Verfahren zur Prüfung auf korrekt angeschlossene Lambda-Sonden
Title (fr)
Méthode de test des connections de sondes lambda
Publication
Application
Priority
DE 19706382 A 19970219
Abstract (en)
[origin: EP0860597A2] The method involves testing if Lambda probes are correctly connected in a combustion engine with one or more cylinder groups (2a-2d) which contains a motor control mechanism and several Lambda probes (4a-5d). Each cylinder group is associated over an individual exhaust fume path (1a-1d) with a catalyst and at least one Lambda probe with a connected regulation unit (6). The momentary condition of a Lambda regulation unit of at least one cylinder group is respectively controlled through the motor control mechanism under retention of the injection of a flammable mixture at the beginning of a delay time which contains at least the reaction- or switching time of the probes, towards an increased and/or reduced motor operation. A signal of the Lambda probe associated with the selected cylinder group, is checked whether it shows a reaction to the undertaken manipulation, indicating a correct connection of this Lambda probe.
IPC 1-7
IPC 8 full level
F01N 7/00 (2006.01); F02D 41/14 (2006.01); G01M 15/00 (2006.01)
CPC (source: EP US)
F02D 41/1443 (2013.01 - EP US); F02D 41/1454 (2013.01 - EP US); F02D 41/1495 (2013.01 - EP US)
Citation (search report)
- [DY] EP 0691465 A2 19960110 - BAYERISCHE MOTOREN WERKE AG [DE]
- [Y] US 4980834 A 19901225 - IKEDA TATSUJI [JP], et al
- [A] US 5212947 A 19930525 - FUJIMOTO SACHITO [JP], et al
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0860597 A2 19980826; EP 0860597 A3 19991215; EP 0860597 B1 20030507; DE 19706382 A1 19980827; DE 19706382 C2 20030306; DE 59808207 D1 20030612; US 6092413 A 20000725
DOCDB simple family (application)
EP 98102187 A 19980209; DE 19706382 A 19970219; DE 59808207 T 19980209; US 2585898 A 19980219