EP 1586747 B1 20081112 - Hydraulic valve lash adjuster
Title (en)
Hydraulic valve lash adjuster
Title (de)
Hydraulisches Ventilspielausgleichselement
Title (fr)
Dispositif hydraulique de rattrapage de jeu
Publication
Application
Priority
DE 102004018457 A 20040416
Abstract (en)
[origin: EP1586747A1] A reverse spring hydraulic valve, e.g. for a self adjusting valve control for an IC engine, has a hydraulic control piston (1) in a bore and with a reverse spring hydraulic valve (5) in its base (2). The spherical, or half spherical valve element (7) moves axially inside a cylindrical guide (20) which is part of a retaining cap (13) which limits the axial and radial movement of the valve element. The cap has an outer flange (11) pressed into a stepped recess (14) of the piston base by a large spring (10) while the valve element is pressed into the open setting by a smaller spring (17) between the valve element and a stepped profile in the base of the piston. The base (24) of the cap limits the displacement of the valve element and has a ring of flow holes (21) around the contact point with the valve element. For extended life the valve element can be made of titanium or ceramic.
IPC 8 full level
F01L 1/24 (2006.01); F01L 1/245 (2006.01)
CPC (source: EP KR US)
E01D 19/125 (2013.01 - KR); F01L 1/24 (2013.01 - EP US); E01D 2101/268 (2013.01 - KR); F01L 2301/00 (2020.05 - EP US); F01L 2301/02 (2020.05 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1586747 A1 20051019; EP 1586747 B1 20081112; CN 1683755 A 20051019; CN 1683755 B 20111214; DE 102004018457 A1 20051117; DE 502005005927 D1 20081224; JP 2005325835 A 20051124; KR 20060045750 A 20060517; US 2005229887 A1 20051020; US 7146954 B2 20061212
DOCDB simple family (application)
EP 05006860 A 20050330; CN 200510067333 A 20050418; DE 102004018457 A 20040416; DE 502005005927 T 20050330; JP 2005119123 A 20050418; KR 20050031356 A 20050415; US 10528505 A 20050413