Control unit for a valve, especially a gas exchange valve of...

Details Control unit for a valve, especially a gas exchange valve of... Control unit for a valve, especially a gas exchange valve of...

2007-12-25

2007-12-25

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

C123S090160, C123S090150, C123S090170, C123S090200, C123S090310

Reexamination Certificate

active

10574000

ABSTRACT:
A gas exchange valve of an internal combustion engine, has valve lifting movements with valve displacement curves and a control unit. To this end, a control unit is provided for operation of at least one valve, in particular a gas exchange valve of an internal combustion engine, in which the valvelifting movement of the at least one valve (6) is generated by superimposing two synchronously rotating cam profiles acting mechanically on a lift operating element (4). The two cam profiles (1, 2) have specially shaped areas by means of which, when superimposed to form one of the two cam profiles (1, 2), at least one additional valve displacement (ZV) can be generated on the whole in addition to a main valve displacement movement (HV) over a full revolution of each of these cam profiles (1, 2).

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