Deactivating element for a valve train of an internal...

Details Deactivating element for a valve train of an internal... Deactivating element for a valve train of an internal...

2007-07-24

2007-07-24

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090450, C123S090480

Reexamination Certificate

active

11480157

ABSTRACT:
The invention proposes a deactivating element (1) for a valve train of an internal combustion engine. The deactivating element (1) comprises a housing (2) and an inner element (4) that is axially displaceable in the bore (3) of the housing (2). According to the invention, the pistons (7) arranged in the inner element (4) for coupling into an annular groove (12) in the housing (2) possess two flattened regions (10, 15) arranged diametrically opposite each other in axial direction of the deactivating element (1). The height of the annular groove (12) is reduced by a measure of a height of the second, additional flattened region (15). Due to the reduction of height of the annular groove (12), its volume is also reduced. This results in advantages activation and deactivation times.

REFERENCES:
patent: 7146951 (2006-12-01), Sailer et al.
patent: 196 04 866 (1997-08-01), None
patent: 198 04 952 (1999-08-01), None
patent: 695 13 165 (2000-06-01), None
patent: 601 11 117 (2001-03-01), None

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