EP 4107386 A1 20221228 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (de)
BRENNSTOFFEINSPRITZVENTIL FÜR VERBRENNUNGSKRAFTMASCHINEN
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT POUR DES MOTEURS À COMBUSTION INTERNE
Publication
Application
Priority
- CH 1732020 A 20200217
- EP 2021053797 W 20210216
Abstract (en)
[origin: WO2021165275A1] The fuel injection valve (10) has a hydraulic control device (72) for controlling the axial movement of the injection valve member (56). The stem (76) of the intermediate valve member (78) of mushroom-shaped configuration of the intermediate valve (83) is guided in the guide recess (74) of the intermediate part (66). In the open position, the intermediate valve member (78) opens up a second connection (118, 117, 96) between a high-pressure fuel inlet (86) and a valve chamber (44) and, in the closed position, the intermediate valve member (78) shuts off the second connection (118, 117, 96) between the high-pressure fuel inlet (86) and the valve chamber (44). In the closed position of the intermediate valve member (78), the head (80) of the intermediate valve member (80) lies with a side facing toward the intermediate part (66) against the intermediate valve seat (82) via a first sealing surface (111.2), which runs around the stem (76) or the guide recess (74) at a first radial spacing (r1) so as to form a first annular sealing surface (121) which is continuous in the circumferential direction, and via a second sealing surface (112.2), which runs around the stem (76) or the guide recess (74) at a second radial spacing (r2) so as to form a second annular sealing surface (122) which is continuous in the circumferential direction, wherein the first radial spacing (r1) is greater than the second radial spacing (r2).
IPC 8 full level
F02M 47/02 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP KR US)
F02M 47/025 (2013.01 - EP KR US); F02M 47/027 (2013.01 - EP KR); F02M 63/0014 (2013.01 - US); F02M 63/0028 (2013.01 - US); F02M 63/0029 (2013.01 - EP KR); F02M 63/0035 (2013.01 - EP KR); F02M 63/0071 (2013.01 - EP KR); F02M 63/0077 (2013.01 - EP KR); F02M 63/0078 (2013.01 - EP KR); F02M 2200/07 (2013.01 - EP KR)
Citation (search report)
See references of WO 2021165275A1
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 2021165275 A1 20210826; CN 115087802 A 20220920; EP 4107386 A1 20221228; JP 2023513634 A 20230331; KR 20220134652 A 20221005; US 2023045640 A1 20230209
DOCDB simple family (application)
EP 2021053797 W 20210216; CN 202180014277 A 20210216; EP 21706532 A 20210216; JP 2022549340 A 20210216; KR 20227031448 A 20210216; US 202117793924 A 20210216