Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2008-03-11
2008-03-11
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090170, C123S090310
Reexamination Certificate
active
11148884
ABSTRACT:
An adjusting device for the rotational position of the camshaft of a reciprocating piston engine relative to the crankshaft has a variator which is designed as a three-shaft transmission having a fixed-to-the-crankshaft input shaft, a fixed-to-the-camshaft output shaft, and an adjusting shaft. The adjusting shaft is coupled nonrotatably to the rotor of a servomotor. To limit the torsional angle between the camshaft and the crankshaft, the adjusting device has limit stops. The servomotor is connected to a control circuit which is designed for controlling the phase velocity of the torsional angle.
REFERENCES:
patent: 6138622 (2000-10-01), Heer
patent: 6499452 (2002-12-01), Ma
patent: 6712307 (2004-03-01), Iwase et al.
patent: 6820579 (2004-11-01), Kawamura et al.
patent: 2002/0100446 (2002-08-01), Watanabe
patent: 2003/0226532 (2003-12-01), Takenake et al.
patent: 2004/0107928 (2004-06-01), Asada et al.
patent: 11/153008 (1999-06-01), None
patent: 2004-156461 (2004-06-01), None
Nguyen Minh Nam
Stork Holger
Davidson, Davidson & Kappel
Eshete Zelalem
Schaeffler KG
LandOfFree
Adjusting device for a camshaft does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjusting device for a camshaft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjusting device for a camshaft will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3919260