EP 0582846 B1 19960424 - Internal combustion piston engine with gas exchange valves per cylinder
Title (en)
Internal combustion piston engine with gas exchange valves per cylinder
Title (de)
Hubkolben-Brennkraftmaschine mit zwei Gaswechselventilen je Zylinder
Title (fr)
Moteur à combustion interne à pistons avec deux soupapes de distribution des gaz par cylindre
Publication
Application
Priority
- DE 4226798 A 19920813
- DE 4230074 A 19920909
- DE 4240631 A 19921203
Abstract (en)
[origin: EP0582846A1] The two inlet valves of an internal combustion engine cylinder, for example, are operated by two cams (11, 12), which in respect of their phase angle can be adjusted in opposition to one another. In addition, the phase position of both cams can be varied in relation to the crankshaft of the internal combustion engine. By means of the so-called variable cam phasing and the variable spread, the charge cycle dynamics of the internal combustion engine can be optimally adjusted. To vary the spread and/or the phasing, either a longitudinally displaceable adjusting screw (30) is provided, which is connected by way of various helical tooth systems (18, 17, 23) to the two camshafts (10, 20) or to the drive gear (15), or two concentrically arranged adjusting screws are provided, which are connected by way of helical tooth systems to the assigned camshafts. The two adjusting screws may carry pistons, which are arranged in a common hydraulic chamber and can be displaced as required by appropriate variation of the pressure ratios. Means can also be provided, however, in order to couple the adjusting screws to one another under certain conditions. <IMAGE>
IPC 1-7
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/344 (2006.01); F01L 13/00 (2006.01)
CPC (source: EP)
F01L 1/34413 (2013.01); F01L 13/0057 (2013.01); F01L 2001/0473 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0582846 A1 19940216; EP 0582846 B1 19960424; DE 59302331 D1 19960530
DOCDB simple family (application)
EP 93111185 A 19930713; DE 59302331 T 19930713