EP 0399991 B1 19911211 - PROCESS AND DEVICE FOR CONTROLLING THE MOVEMENT OF A HYDRAULICALLY ACTUATED VALVE
Title (en)
PROCESS AND DEVICE FOR CONTROLLING THE MOVEMENT OF A HYDRAULICALLY ACTUATED VALVE
Publication
Application
Priority
AT 126789 A 19890524
Abstract (en)
[origin: JPH0320104A] PURPOSE: To compensate for machining errors and temperature-based dimensional changes of a hydraulically operated valve, by pressing a flying setting plunger that divides the interior of a cylinder into a pressure chamber and an actuating chamber against a stop during a maximum valve lift such that the starting positions of all operation cycles are reset. CONSTITUTION: Within a cylinder 6 integrated with a cage 5, a flying setting plunger 7 and a stopper 8 are installed to divide an actuating chamber 9 and a pressure chamber 10. The pressure chamber 10 is connected to a pressure- generating unit 13 via a high-pressure line 18 controlled by a valve 19, while the actuating chamber 9 is to the pressure-generating unit 13 via a low-pressure line 21 controlled by another valve 22. When a valve element 2 biased by a spring 11 in a closing direction reaches its maximum lift by the action of another plunger 4, the setting plunger 7 is pressed against the stopper 8. The setting plunger 7 therefore resets its starting position for all operation cycles to compensate for machining errors and temperature-based dimensional changes.
IPC 1-7
IPC 8 full level
F01L 9/10 (2021.01); F02M 47/00 (2006.01); F02M 61/08 (2006.01); F02M 61/10 (2006.01); F15B 15/00 (2006.01); F15B 15/24 (2006.01); F16K 31/122 (2006.01)
CPC (source: EP US)
F01L 9/10 (2021.01 - EP US); Y10T 137/0318 (2015.04 - EP US)
Citation (examination)
EP 0328602 A1 19890823 - AVL VERBRENNUNGSKRAFT MESSTECH [AT]
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0399991 A1 19901128; EP 0399991 B1 19911211; AT 410124 B 20030225; AT A126789 A 20020615; DE 59000019 D1 19920123; ES 2027072 T3 19920516; JP H0320104 A 19910129; JP H0670419 B2 19940907; US 5058614 A 19911022
DOCDB simple family (application)
EP 90890140 A 19900508; AT 126789 A 19890524; DE 59000019 T 19900508; ES 90890140 T 19900508; JP 13515590 A 19900524; US 52571290 A 19900521