Valve actuating mechanism for an internal combustion engine
AssigneeAudi AG
InventorsMichael Paul, Peter Hubschle, Wilhelm Hannibal
Life of this patent
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Abstract
An actuating mechanism for three inlet valves of a cylinder of an internal combustion engine has three first rocker arms, each of which actuates an inlet valve and is actuated by a first cam for a lower revolution speed range, and two second rocker arms which are arranged between adjacent first rocker arms and are actuated by second cams for the upper speed range. The first and second rocker arms are coupled in the upper speed range so that the valves are actuated in accordance with the contour of the second cams.
Claims10
A valve actuation mechanism for an internal combustion engine including at least two inlet valves (E) per cylinder, comprising:
- means for actuating said inlet valves, said actuating means including a camshaft having cams, and first and second rocker arms (6 and 9);
- a common shaft for pivotally supporting said first rocker arms (6), and first cams (2,3,4), said first rocker arms interacting with said inlet valves and said first cams for a first rotational speed range;
- a common shaft for pivotally supporting said second rocker arms (9), and second cams (8), said second rocker arms interacting with said inlet valves and said second cams for a second rotational speed range;
- coupling means (13, 24) for selectively coupling said first and second rocker arms together in said second rotational speed range and for decoupling said first and second rocker arms in said first rotational speed range;
- and including
- three of said inlet valves and three of said first rocker arms per cylinder;
- two of said second rocker arms, each one arranged between two adjacent first rocker arms;
- and
- two of said second cams being substantially identically contoured for interacting with said two second rocker arms.
Dependencies are inferred from the claim text.