EP 3642917 A1 20200429 - SPARK PLUG WITH MULTI-STEP INSULATOR SEAT
Title (en)
SPARK PLUG WITH MULTI-STEP INSULATOR SEAT
Title (de)
ZÜNDKERZE MIT MEHRSTUFIGEM ISOLATORSITZ
Title (fr)
BOUGIE D'ALLUMAGE POURVUE D'UN SIÈGE D'ISOLATEUR À PLUSIEURS ÉTAGES
Publication
Application
Priority
- DE 102017210235 A 20170620
- EP 2018059262 W 20180411
Abstract (en)
[origin: WO2018233890A1] The invention relates to a spark plug (1), comprising a housing (3), an insulator (3) arranged within the housing (2), wherein the insulator (3) has a longitudinal axis (X), an insulator base (31), an insulator body (32), an insulator head (33) and an insulator seat (35), which forms a transition from the insulator base (31) to the insulator body (32), a middle electrode (4) arranged within the insulator (3), a ground electrode (5) arranged on an end face of the housing (2) facing a combustion chamber, wherein the ground electrode (5) and the middle electrode (4) are arranged such that the two electrodes form an ignition gap, wherein the housing (2) on its inner side has a housing seat (25), on which the insulator (3) rests via its insulator seat (35), wherein an inner seal (10) is arranged between the housing seat (25) and the insulator seat (35), such that the inner seal (10), the housing seat (25) and the insulator seat (35) form a seal system, wherein the insulator seat (35) has at least one step, which has a first portion (3510) and at least one second portion (3520), wherein the first portion (351) and the second portions (3520) have an angle γ of greater than 0° to one another and the first portion (3510) is parallel to the insulator longitudinal axis (X), wherein the inner seal (10) bears against this first portion (3510), such that a radial sealing face (351) is formed on the insulator (3).
IPC 8 full level
H01T 13/36 (2006.01)
CPC (source: EP RU US)
H01T 13/02 (2013.01 - RU); H01T 13/36 (2013.01 - EP RU US); H01T 21/02 (2013.01 - RU)
Citation (search report)
See references of WO 2018233890A1
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
DOCDB simple family (publication)
DE 102017210235 A1 20181220; BR 112019027042 A2 20200630; CN 110741518 A 20200131; CN 110741518 B 20211112; EP 3642917 A1 20200429; EP 3642917 B1 20210901; ES 2898751 T3 20220308; JP 2020522866 A 20200730; JP 6894537 B2 20210630; RU 2020100468 A 20210720; RU 2020100468 A3 20210720; RU 2765036 C2 20220124; US 11165226 B2 20211102; US 2021151958 A1 20210520; WO 2018233890 A1 20181227
DOCDB simple family (application)
DE 102017210235 A 20170620; BR 112019027042 A 20180411; CN 201880041157 A 20180411; EP 18717344 A 20180411; EP 2018059262 W 20180411; ES 18717344 T 20180411; JP 2019568023 A 20180411; RU 2020100468 A 20180411; US 201816622592 A 20180411