Internal-combustion engines – Poppet valve operating mechanism – Tappet
Reexamination Certificate
2011-04-26
2011-04-26
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Tappet
C123S090550, C123S090480, C074S569000
Reexamination Certificate
active
07931001
ABSTRACT:
The invention proposes a push-rod valve train having an adjustable valve tappet (1). This has an outer part (2a, 2b), an inner part (8) and a lost-motion spring (10), which forces the inner part (8) towards a relative position, at least one retainer ring (23), which is fixed in an annular groove (21) of the outer part (2a, 2b) and which interacts with a stop face (22) of the inner part (8), being provided for fixing the relative position, said retainer ring having lugs (28) extending radially inwards and separated by a fitting gap (27). In this the free movement of the valve push rod (15) relative to the lugs (28) is assured by the provision of a torsional locking means (30a, 30b), which serves to fix the radial position of the fitting gap (27) inside the annular groove (21).
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Bugescu Florin
Strehlau Anna
Eshete Zelalem
Schaeffler Technologies GmbH & Co. KG
Volpe and Koenig P.C.
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