Internal-combustion engines – Poppet valve operating mechanism – Rocker
Reexamination Certificate
2011-03-01
2011-03-01
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Rocker
C123S090160, C123S090440, C074S559000
Reexamination Certificate
active
07895981
ABSTRACT:
In order to produce a variable valve lift device for the lift adjustment of the gas-exchange valves of an internal combustion engine, by means of which with adjustment forces and holding forces, independently from whether said holding forces and adjustment forces are applied mechanically, hydraulically or electrically, with an adjustment of the valve lift being as cost-effective as possible, and with maximum accuracy of the adjustment or control of the valve lift to be taken between the individual cylinders of a multi-cylinder internal combustion engine, and, moreover, the adjustment possibility of the valve lift of the valves of an internal combustion engine with several cylinders is obtained within smallest tolerances, it is suggested that a valve lift device (1) has a rotatable eccentric shaft (3), which consists of several eccentrics (4, 5) and whereby all possible contours of the eccentrics (4, 5) are positioned within a circle, which is formed by means of the external diameters of a bearing (6, 7) of the eccentric shaft (3).
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Bösl-Flierl Gerlinde
Flierl Rudolf
Hannibal Wilhelm
Jubelt Michael
Knecht Andreas
Chang Ching
enTec Consulting GmbH
Hydraulik-Ring GmbH
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