EP 0279265 B1 19901219 - VALVE DEVICE WITH A HYDRAULIC TRANSMISSION AND VARIABLE CHARACTERISTIC BY MEANS OF SLIDING VALVE CONTROL
Title (en)
VALVE DEVICE WITH A HYDRAULIC TRANSMISSION AND VARIABLE CHARACTERISTIC BY MEANS OF SLIDING VALVE CONTROL
Publication
Application
Priority
DE 3704071 A 19870210
Abstract (en)
[origin: US4821689A] A valve drive assembly for an internal combustion engine includes a given number of pistons, the given number of inlet or outlet valves each being connected to a piston and independently movable by hydraulic fluid acting upon the pistons, at least one rotatable link disposed in a housing for aiding in shutting off and releasing a supply of hydraulic fluid to the pistons at regular intervals, and an auxiliary shaft supported in the rotatable link and driven by a crankshaft. First and second supply lines for hydraulic fluid lead from a hydraulic pump to first and second annular grooves formed in the housing. The rotatable link has the given number of radial third and fourth conduits formed therein communicating with the first and second annular grooves. The auxiliary shaft has fifth and sixth annular grooves formed therein communicating with the third and fourth conduits. Fifth and sixth conduits communicate with the fifth and sixth annular grooves. Seventh and eighth conduits communicate with the fifth and sixth conduits. Third and fourth annular grooves lead from the seventh and eighth conduits to first and second conduits which lead to the pistons. Ribs divide the fifth and sixth annular grooves into the given number of sectors.
IPC 1-7
IPC 8 full level
F01L 9/10 (2021.01); F01L 1/34 (2006.01); F01L 13/00 (2006.01); F01L 31/22 (2006.01); F02D 13/02 (2006.01)
CPC (source: EP KR US)
F01L 1/34 (2013.01 - EP KR US); F01L 9/10 (2021.01 - EP US); F01L 13/0015 (2013.01 - EP KR US); F01L 2301/02 (2020.05 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0279265 A1 19880824; EP 0279265 B1 19901219; AT E59212 T1 19910115; BR 8800533 A 19880927; CN 88100461 A 19880824; DE 3861290 D1 19910131; ES 2019411 B3 19910616; JP S63198710 A 19880817; KR 880010219 A 19881007; MX 160235 A 19900110; SU 1621816 A3 19910115; US 4821689 A 19890418
DOCDB simple family (application)
EP 88101403 A 19880201; AT 88101403 T 19880201; BR 8800533 A 19880209; CN 88100461 A 19880129; DE 3861290 T 19880201; ES 88101403 T 19880201; JP 2485388 A 19880204; KR 880001171 A 19880209; MX 1034388 A 19880209; SU 4203996 A 19880114; US 15479488 A 19880210