Cup-shaped valve tappet

Details Cup-shaped valve tappet Cup-shaped valve tappet

1994-07-15

1995-01-10

Dolinar, Andrew M.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9051, 74569, F01L 124, F01L 114

Patent

active

053797302

ABSTRACT:
A cup-shaped valve tappet (1,25) for actuating a valve of an internal combustion engine, comprising a cylindrical jacket (2,26) closed at one end by a bottom (3,27) and on whose outer peripheral surface (17,43) a circumferential groove (18,44) is formed by non-cutting shaping, while on an inner peripheral surface (5,37) of said cylindrical jacket a sheet metal cylinder (4,39) is guided substantially without play, said valve tappet further comprising a guide sleeve (7,35) in which a hydraulic clearance compensation element (8,34) is received, characterized in that the sheet metal cylinder (4,39) extends at least up to a region of the jacket (2,26) comprising the circumferential groove (18,44) while a bead (19,46) formed by non-cutting shaping on the inner peripheral surface (5,37) of the jacket (2,26) bears against a circumferential groove (20,48) of the sheet metal cylinder (4,39).

REFERENCES:
patent: 4437439 (1984-03-01), Speil
patent: 4635593 (1987-01-01), Kodama
patent: 4648360 (1987-03-01), Schaeffler
patent: 4802448 (1989-02-01), Ableitner
patent: 4876997 (1989-10-01), Zorn et al.
patent: 4951619 (1990-08-01), Schaeffler

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