Camshaft adjusting device

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Reexamination Certificate

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Details

C123S090150, C123S090310

Reexamination Certificate

active

07661399

ABSTRACT:
In a camshaft adjusting device including a positioning actuator for adjusting a phase position of a camshaft with respect to a crankshaft of an internal combustion engine, wherein the camshaft is driven by the crankshaft via a drive input, and a base drive torque of the camshaft is provided by a positioning actuator, a spring element is arranged between the camshaft and the crankshaft and has a spring torque selected so as to compensate for at least part of a mean load torque of a load unit connected to the camshaft to be driven thereby and at most only a part of the base drive torque.

REFERENCES:
patent: 4378765 (1983-04-01), Abermeth et al.
patent: 5234088 (1993-08-01), Hampton
patent: 5680837 (1997-10-01), Pierik
patent: 5687683 (1997-11-01), Knoblauch
patent: 6276321 (2001-08-01), Lichti et al.
patent: 31 33 289 (1983-03-01), None
patent: 100 84 408 (2001-08-01), None
patent: 201 05 838 (2002-09-01), None
patent: 102 13 825 (2002-11-01), None
patent: 102 05 034 (2003-08-01), None
patent: 0 687 804 (1995-12-01), None
patent: 1 533 483 (2004-11-01), None

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