Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2005-12-06
2005-12-06
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090310
Reexamination Certificate
active
06971353
ABSTRACT:
In a camshaft adjustment control device for an internal combustion engine arranged in the drive train for a camshaft, with an inner body connected to the camshaft and an outer body rotatable relative to the inner body, and a control space between the inner and the outer bodies to which hydraulic fluid can be supplied for adjusting the relative angular positions of the inner body connected to the camshaft and the outer body driven by the crankshaft, the inner body is mounted to the camshaft by a bolt having a central bore in which a control spool valve is disposed controlling the flow of fluid to and from the control space and a check valve is arranged in the supply lines of the hydraulic fluid to the control spool valve which check valve opens when a certain pressure is applied thereto.
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patent: 6460559 (2002-10-01), Smith et al.
patent: 6481402 (2002-11-01), Simpson et al.
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Heinze Matthias
Lehmann Kai
Plank Jens-Uwe
Rösener Jörg
Bach Klaus J.
Daimler-Chrysler AG
Denion Thomas
Eshete Zelalem
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