EP 4237672 A1 20230906 - METHOD FOR THE ROBUST IDENTIFICATION OF KNOCKING IN AN INTERNAL COMBUSTION ENGINE, CONTROL DEVICE, AND MOTOR VEHICLE
Title (en)
METHOD FOR THE ROBUST IDENTIFICATION OF KNOCKING IN AN INTERNAL COMBUSTION ENGINE, CONTROL DEVICE, AND MOTOR VEHICLE
Title (de)
VERFAHREN ZUR ROBUSTEN KLOPFERKENNUNG IN EINER VERBRENNUNGSKRAFTMASCHINE, STEUERGERÄT UND KRAFTFAHRZEUG
Title (fr)
PROCÉDÉ D'IDENTIFICATION ROBUSTE DE CLIQUETIS DANS UN MOTEUR À COMBUSTION INTERNE, DISPOSITIF DE COMMANDE ET VÉHICULE À MOTEUR
Publication
Application
Priority
- DE 102020128281 A 20201028
- EP 2021076719 W 20210929
Abstract (en)
[origin: WO2022089866A1] The invention relates to a method for automatically identifying knocking in an internal combustion engine having a plurality of cylinders, variable inlet valve stroke and a knocking sensor. The invention further relates to a corresponding control device and to a motor vehicle equipped therewith. In the method, the internal combustion engine is operated with a closing of the inlet valve still in the induction stroke. In a predefined measurement time frame, a signal of the knocking sensor is received and evaluated with respect to a criterion for detecting knocking. A basic threshold value predefined for the identification of knocking is modified by means of a predefined variable interference factor, which depends on a relative point in time at which an inlet valve of at least one of the cylinders closes in relation to a predefined reference point. A signal based on the sensor signal is only identified as knocking if it reaches at least the modified basic threshold value.
IPC 8 full level
F02D 13/02 (2006.01); F02D 35/02 (2006.01); F02D 41/24 (2006.01); G01L 23/22 (2006.01)
CPC (source: EP US)
F02D 13/0226 (2013.01 - EP US); F02D 35/027 (2013.01 - EP US); F02D 41/2451 (2013.01 - EP US); G01L 23/222 (2013.01 - EP US); F02D 2200/101 (2013.01 - EP); Y02T 10/12 (2013.01 - EP); Y02T 10/40 (2013.01 - EP)
Citation (search report)
See references of WO 2022089866A1
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022089866 A1 20220505; CN 115997072 A 20230421; DE 102020128281 A1 20220428; EP 4237672 A1 20230906; US 2023323826 A1 20231012
DOCDB simple family (application)
EP 2021076719 W 20210929; CN 202180053625 A 20210929; DE 102020128281 A 20201028; EP 21786368 A 20210929; US 202118024460 A 20210929