Internal-combustion engines – Poppet valve operating mechanism – Rocker
Reexamination Certificate
2007-04-10
2007-04-10
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Rocker
C123S090440, C074S569000
Reexamination Certificate
active
11546869
ABSTRACT:
An adjustable valve rocker lever (1) of a valve timing gear of an internal combustion engine, having an inner lever (3) and an outer lever (4) enclosing the former with its arms (2), the levers (3, 4) running on a common axis (5) so that they can swivel relative to one another and being connectable to one another by way of coupling links (6) in such a way that a large valve lift is generated when coupled and a comparatively smaller or zero valve lift is generated when decoupled, the inner lever (3) on an underside (7) at one end (8) of the axis (5) having a seating face (9) for an exhaust and refill valve and at the other end (10), a complementary face (11) for a support element, and at least the outer lever (4) having a lifting face (12) for a lifting cam, and a lost-motion spring (13) being provided between the levers (3, 4), the axis (5), viewed in the longitudinal direction of the valve rocker lever (1), being arranged between the seating face (9) for the exhaust and refill valve and a section directly in front of the lifting face (12) for the lifting cam on the outer lever (4), the lost-motion spring (13), viewed in the longitudinal direction, being positioned behind the axis (5), outside at the one end (8).
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Chang Ching
Muserlian Charles A.
Schaeffler KG
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