EP 4158742 A1 20230405 - PRECHAMBER SPARK PLUG HAVING PROFILED GROUND ELECTRODE
Title (en)
PRECHAMBER SPARK PLUG HAVING PROFILED GROUND ELECTRODE
Title (de)
VORKAMMER-ZÜNDKERZE MIT PROFILIERTER MASSEELEKTRODE
Title (fr)
BOUGIE D'ALLUMAGE DE PRÉCHAMBRE AYANT UNE ÉLECTRODE DE MASSE PROFILÉE
Publication
Application
Priority
- DE 102020206663 A 20200528
- EP 2021061814 W 20210505
Abstract (en)
[origin: WO2021239415A1] The invention relates to a prechamber spark plug, comprising: - a housing (2); - a cap (80), which is disposed at the combustion-chamber end of the housing (2) and forms a prechamber (81) together with the housing (2), and in which at least one transfer-flow hole (2) is provided in order to allow gas to enter the prechamber (81) and to allow gas to exit the prechamber (81); - an insulator (3), which is disposed within the housing (2); - a central electrode (4), which is disposed within the insulator (3); and - a ground electrode (5), the ground electrode (5) and the central electrode (4) being disposed such that the two electrodes (4, 5) form an ignition gap, characterized in that the ground electrode (5) has a shape deviating from a cylindrical shape in order to influence a gas flow within the prechamber (81) in a specific way.
IPC 8 full level
H01T 13/32 (2006.01); H01T 13/46 (2006.01); H01T 13/54 (2006.01)
CPC (source: EP)
H01T 13/32 (2013.01); H01T 13/54 (2013.01); H01T 13/467 (2013.01)
Citation (search report)
See references of WO 2021239415A1
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)
DE 102020206663 A1 20211202; EP 4158742 A1 20230405; WO 2021239415 A1 20211202
DOCDB simple family (application)
DE 102020206663 A 20200528; EP 2021061814 W 20210505; EP 21724608 A 20210505