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Valve actuator for gas exchange valves of an internal combustion engine having an adjustable rocker lever which cooperates with an eccentric shaft on one hand and a roller on the cam shaft on the other hand
Valve actuator for gas exchange valves of an internal combustion engine having an adjustable rocker lever which cooperates with an eccentric shaft on one hand and a roller on the cam shaft on the other hand
The gear train (10) comprises at least one tilt lever (12) whose first end operates with at least one gas exchange valve, and whose second end is connected to a push rod (13) that has an adjustment system for phase sliding of the valve control times. The adjustment system has an adjustable oscillating lever (17) that operates, on one side, with tappet shaft (16) and, on the other on the other side, with a cam (14) on a cam-shaft running roller (18). The adjustable oscillating lever is linked to the tappet shaft such that the tappet (15) is adjustable to a tappet angle, beta, and which has a comparable tappet weight, e1. There is a desired and predefined phase sliding with a maximum phase adjustment angle, alpha. With this perimeter operation, the support point (31) of the push rod is achieved on the oscillating lever during the phase sliding in approximately the turning radius, R, of the push rod about the upper rotation point at the linking point of the tilt lever.
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