EP 4367381 A1 20240515 - PUMP, IN PARTICULAR FUEL INJECTION PUMP
Title (en)
PUMP, IN PARTICULAR FUEL INJECTION PUMP
Title (de)
PUMPE, INSBESONDERE KRAFTSTOFFEINSPRITZPUMPE
Title (fr)
POMPE, EN PARTICULIER POMPE D'INJECTION DE CARBURANT
Publication
Application
Priority
- DE 102021207001 A 20210705
- EP 2022064850 W 20220601
Abstract (en)
[origin: WO2023280482A1] The invention relates to a pump (1), in particular a fuel injection pump, comprising a housing part (2) having a cylindrical bore (3) in which a reciprocating rod (4) is received so as to be movable back and forth, wherein a rod seal (5) is integrated into the cylindrical bore (3) for media separation, in particular for separating the fuel as first medium from a lubricating medium as second medium. According to the invention, the housing part (2) forms a first stop surface (6) which limits the stroke of the reciprocating rod (4) and which interacts in a stop-forming manner with a second stop surface (7) formed on the reciprocating rod (4), wherein at least one stop surface (6, 7) has at least one relief groove (8) formed therein, via which the cylindrical bore (3) is connected to a media-conducting pressure chamber (9) when the reciprocating rod (4) comes into contact with the stop surface (6) of the housing part (2).
IPC 8 full level
F02M 59/44 (2006.01); F04B 1/0448 (2020.01)
CPC (source: EP KR)
F02M 59/44 (2013.01 - EP); F02M 59/442 (2013.01 - EP KR); F04B 1/0448 (2013.01 - EP KR); F04B 53/144 (2013.01 - EP KR); F04B 53/146 (2013.01 - EP KR); F04B 53/16 (2013.01 - EP KR); F02M 2200/16 (2013.01 - EP KR)
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 102021207001 A1 20230105; CN 117616195 A 20240227; EP 4367381 A1 20240515; JP 2024522883 A 20240621; KR 20240026235 A 20240227; WO 2023280482 A1 20230112
DOCDB simple family (application)
DE 102021207001 A 20210705; CN 202280047926 A 20220601; EP 2022064850 W 20220601; EP 22731211 A 20220601; JP 2023579491 A 20220601; KR 20247003655 A 20220601