Global Patent Index - EP 1440225 A2

EP 1440225 A2 20040728 - HYDRAULIC ACTUATOR FOR AN ENGINE VALVE

Title (en)

HYDRAULIC ACTUATOR FOR AN ENGINE VALVE

Title (de)

HYDRAULISCHER AKTOR FÜR EIN GASWECHSELVENTIL

Title (fr)

ACTIONNEUR HYDRAULIQUE POUR SOUPAPE DE MOTEUR

Publication

EP 1440225 A2 20040728 (DE)

Application

EP 02762231 A 20020730

Priority

  • DE 0202791 W 20020730
  • DE 10151773 A 20011019
  • DE 10228702 A 20020627

Abstract (en)

[origin: US6776129B2] A hydraulic actuator for gas exchange valves of internal combustion engines is disclosed, in which the lifting of the gas exchange valve from the valve seat is effected with great force. The opening motion of the gas exchange valve then ensues at reduced force. Upon closure of the gas exchange valve, the gas exchange valve is braked before striking the valve seat, so that operation of the gas exchange valve with little wear and little noise can be achieved.

IPC 1-7

F01L 9/02

IPC 8 full level

F01L 9/10 (2021.01); F16K 31/122 (2006.01)

CPC (source: EP US)

F01L 9/10 (2021.01 - EP US); F01L 2001/34446 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

WO 03038246 A2 20030508; WO 03038246 A3 20030828; AT E301239 T1 20050815; EP 1440225 A2 20040728; EP 1440225 B1 20050803; JP 2005507046 A 20050310; JP 4314115 B2 20090812; US 2004050350 A1 20040318; US 6776129 B2 20040817

DOCDB simple family (application)

DE 0202791 W 20020730; AT 02762231 T 20020730; EP 02762231 A 20020730; JP 2003540495 A 20020730; US 45082403 A 20030618