Global Patent Index - EP 2344743 A1

EP 2344743 A1 20110720 - METHOD FOR TESTING THE FUNCTIONAL SOUNDNESS OF AT LEAST ONE INJECTION VALVE

Title (en)

METHOD FOR TESTING THE FUNCTIONAL SOUNDNESS OF AT LEAST ONE INJECTION VALVE

Title (de)

VERFAHREN ZUM ÜBERPRÜFEN DER FUNKTIONSTÜCHTIGKEIT MINDESTENS EINES EINSPRITZVENTILS

Title (fr)

PROCEDE DE VERIFICATION DE LA CAPACITE DE FONCTIONNEMENT D'AU MOINS UN INJECTEUR

Publication

EP 2344743 A1 20110720 (DE)

Application

EP 09783623 A 20091001

Priority

  • EP 2009062732 W 20091001
  • DE 102008042605 A 20081006

Abstract (en)

[origin: WO2010040676A1] The invention relates to a method for testing the functional soundness of at least one injection valve (10) of an internal combustion engine (8), in which at least the functional soundness of a lambda probe (12) adapted to determine a state of the at least one injection valve (10) is tested, wherein a steady-state operating condition of the internal combustion engine (8) is established, and a test is performed to see whether at least one signal of the lambda probe (12) is stable for the established operating condition. Depending on whether the signal of the lambda probe (12) is stabile or not, a lambda value for the at least one injection valve (10) is measured using the lambda probe (12) at the established operating condition.

IPC 8 full level

F02D 41/22 (2006.01)

CPC (source: EP US)

F02D 41/221 (2013.01 - EP US); Y02T 10/40 (2013.01 - EP US)

Citation (search report)

See references of WO 2010040676A1

Citation (examination)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

WO 2010040676 A1 20100415; CN 102171431 A 20110831; CN 102171431 B 20131106; DE 102008042605 A1 20100527; DE 102008042605 B4 20191205; EP 2344743 A1 20110720; US 2011259094 A1 20111027; US 8650941 B2 20140218

DOCDB simple family (application)

EP 2009062732 W 20091001; CN 200980139449 A 20091001; DE 102008042605 A 20081006; EP 09783623 A 20091001; US 99801009 A 20091001