EP 2706223 A1 20140312 - Relief valve, high pressure pump and fuel injection system
Title (en)
Relief valve, high pressure pump and fuel injection system
Title (de)
Entlastungsventil, Hochdruckpumpe und Brennstoffeinspritzsystem
Title (fr)
Soupape de décharge, pompe haute pression et système d'injection de carburant
Publication
Application
Priority
EP 12183506 A 20120907
Abstract (en)
A relief valve arrangement is specified. It comprises a first valve seat (103) and a first sealing member (105). The first sealing member (105) is designed to seal the first valve seat (103) hydraulically in case of a mechanical connection between the first sealing member (105) and the first valve seat (103). It further comprises a second valve seat (106) and a second sealing member (107). The second sealing member (107) is designed to seal the second valve seat (106) hydraulically in case of a mechanical connection between the second sealing member (107) and the second valve seat (106). The relief valve arrangement also comprises a first spring (109) comprising a spring rate and being coupled to the first sealing member (105) such that the first sealing member (105) is pressed against the first valve seat (103), and a second spring (112) comprising a spring rate and being coupled to the second sealing member (107) such that the second sealing member (107) is pressed against the second valve seat (106). The value of the spring rate of the first spring (109) is greater than the value of the spring rate of the second spring (112). Further, a high pressure pump and a fuel injection system are specified.
IPC 8 full level
F02M 63/00 (2006.01); F04B 53/10 (2006.01)
CPC (source: EP)
F02M 63/005 (2013.01); F04B 53/10 (2013.01)
Citation (search report)
- [X] JP 2010156256 A 20100715 - DENSO CORP
- [X] US 2011139126 A1 20110616 - INOUE HIROSHI [JP]
- [X] US 2011125387 A1 20110526 - SUZUKI TAKASHI [JP], et al
- [X] JP 2009108847 A 20090521 - NIPPON SOKEN, et al
- [X] US 2011126804 A1 20110602 - LUCAS ROBERT G [US], et al
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)
DOCDB simple family (application)
EP 12183506 A 20120907