Method and device for controlling an electrodynamic brake of...

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

Reexamination Certificate

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C123S090170, C361S139000

Reexamination Certificate

active

07568455

ABSTRACT:
In a method and device for adjusting an electro-dynamic brake of an electric camshaft adjuster for a phase angle adjustment of a camshaft of an internal combustion engine with respect to the crankshaft thereof, the phase angle is controlled by means of a position controller and the adjustment speed of the phase angle of the camshaft with respect to the crankshaft is controlled by means of an adjustment speed controller by controlling the current through the electro-dynamic brake by means of a further adjustment device and the use of Pilot controls to improve the control behavior of the cascade controller.

REFERENCES:
patent: 5218935 (1993-06-01), Quinn, Jr. et al.
patent: 7380529 (2008-06-01), Finis et al.
patent: 100 38 354 (2002-02-01), None
patent: 102 47 650 (2003-04-01), None
patent: 102 42 659 (2004-03-01), None
patent: 102 51 347 (2004-03-01), None
patent: 102 59 134 (2004-07-01), None
patent: WO 2004/007919 (2004-01-01), None
patent: WO 2004/057161 (2004-07-01), None

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