EP 0341440 B1 19930120 - VALVE OPERATING DEVICE WITH A MAGNETIC VALVE FOR AN INTERNAL-COMBUSTION ENGINE
Title (en)
VALVE OPERATING DEVICE WITH A MAGNETIC VALVE FOR AN INTERNAL-COMBUSTION ENGINE
Publication
Application
Priority
DE 3815668 A 19880507
Abstract (en)
[origin: JPH01315605A] PURPOSE: To raise control response by integrating a liquid tank with a magnetic valve in a device for controlling the opening and closing time of an engine valve, which comprises a magnetic valve for controlling the supply to and discharge from a stroke transmission chamber arranged between a valve cam and a valve tappet. CONSTITUTION: A valve control device arranged between valve tappet 12 for retaining a valve member 11 and a valve cam 14 integrated with a camshaft 13 comprises a casing 20 carried by a valve casing 15, and a casing block 23 is engaged with a casing chamber 21 therein. A valve piston 25 and a cam piston 27 are engaged in a central casing port 24 of the block 23. They are pressed onto a valve cam 14 by a return spring 28. A stroke transmission chamber 29 is defined between the two pistons 25, 27. The chamber 29 is connected to a magnetic control valve 31 and a pump 34 via a conduit 30. In this case, a liquid tank 36 is integrated with the magnetic control valve 31. The liquid tank 36 is connectable with the stroke transmission chamber 29 by a valve member 38.
IPC 1-7
IPC 8 full level
F01L 1/12 (2006.01); F01L 1/24 (2006.01); F01L 9/14 (2021.01); F01L 13/00 (2006.01); F01L 31/22 (2006.01)
CPC (source: EP US)
F01L 9/14 (2021.01 - EP US); F01L 13/0031 (2013.01 - EP US); F01L 2001/34446 (2013.01 - EP US)
Citation (examination)
EP 0196441 A1 19861008 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0341440 A1 19891115; EP 0341440 B1 19930120; DE 3815668 A1 19891116; DE 58903317 D1 19930304; JP 2730593 B2 19980325; JP H01315605 A 19891220; US 4889084 A 19891226
DOCDB simple family (application)
EP 89106472 A 19890412; DE 3815668 A 19880507; DE 58903317 T 19890412; JP 11388689 A 19890508; US 31180389 A 19890217