EP 0727576 B1 20000517 - Process for detecting error conditions in diesel injection devices
Title (en)
Process for detecting error conditions in diesel injection devices
Title (de)
Verfahren zum Ermitteln von Fehlerzuständen von Dieseleinspritzanlagen
Title (fr)
Procédé de détection de conditions d'erreur de dispositifs d'injection diesel
Publication
Application
Priority
DE 19505786 A 19950220
Abstract (en)
[origin: EP0727576A1] The waveforms of pressure at the injectors (1.1a-1.1d) of the four cylinders are detected e.g. by piezoelectric transducers clamped to the injection lines close to the nozzles. The detected waveform for each individual injector is normalised w.r.t. a standard curve and evaluated by comparison. Cross-correlation is performed between discrete values of the waveform sampled at regular intervals. Temporally matched individual injections are extracted from maxima of the cross-correlation function, and matched in terms of amplitude to the standard curve by linear regression.
IPC 1-7
IPC 8 full level
F02M 65/00 (2006.01)
CPC (source: EP)
F02M 65/003 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0727576 A1 19960821; EP 0727576 B1 20000517; CN 1061737 C 20010207; CN 1135575 A 19961113; DE 19505786 A1 19960822; DE 59508353 D1 20000621
DOCDB simple family (application)
EP 95120213 A 19951220; CN 96104314 A 19960220; DE 19505786 A 19950220; DE 59508353 T 19951220