Method and device for controlling an electrodynamic brake of an electric camshaft adjuster for an internal combustion engine

US7568455B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Lorenzo Giovanardi · Oerlinghausen, DE
• Matthias Gregor · Stuttgart, DE
• Jens Meintschel · Bernsdorf, DE
• Reinhard Orthmann · Leonberg, DE
• Bernd-Heinrich Schmitfranz · Eßlingen, DE
• Markus Stalitza · Schwäbisch Gmünd, DE

Key dates

• Filing date: Jun 22, 2007
• Grant date: Aug 4, 2009
• Expiry date: Oct 16, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2800/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

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.