Camshaft

Details Camshaft Camshaft

2006-12-21

2008-09-09

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07421992

ABSTRACT:
A camshaft for activation of the gas exchange valves of an internal combustion engine has two coaxially mounted shafts rotatable inside and with respect to one another, first cams fixedly attached to the first shaft and second cams fixedly attached to the second shaft, a main camshaft drive acting on both shafts, and a device for adjusting the angle of rotation of the first and second shafts with respect to one another by a first actuating drive and adjusting the angle of rotation of both shafts jointly by a second actuating drive. The adjusting device has a rapid response and allows large adjustment angles with a simple structural design.

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patent: 6725817 (2004-04-01), Methley et al.
patent: 7137370 (2006-11-01), Axmacher et al.
patent: 2002/0017257 (2002-02-01), Axmacher et al.
patent: 2005/0235939 (2005-10-01), Wilke
patent: 102 22 475 (2003-12-01), None
patent: 10 2004 020 124 (2005-11-01), None
patent: 0 582 846 (1994-02-01), None

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