Method for controlling an externally excited electric machine to boost regeneration of a NOx storage catalyst

US10094258B2 · kind B2 · utility

Assignees

• Robert Bosch GmbH · DE
• SEG Automotive Germany GmbH · DE

Inventors

• Istvan Deak · Ludwigsburg, DE
• Bernd Schroeder · Eßlingen, DE
• Martin Henger · Tamm, DE
• Tobias Trzebiatowski · Gerlingen, DE
• Benjamin Klein · Great Neck, US
• Andreas Greis · Stuttgart, DE
• Mario Kaepple · Bobingen, DE
• Julian Roesner · Untergruppenbach, DE

Key dates

• Filing date: May 13, 2016
• Grant date: Oct 9, 2018
• Expiry date: Feb 17, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for controlling an externally excited electric machine to boost regeneration of a NOx storage catalyst which is part of an assembly made up of an internal combustion engine, the externally excited electric machine which is connected to the internal combustion engine in a manner allowing the transmission of torque and which has a rotor including a rotor winding and a stator, and the NOx storage catalyst which is disposed in an exhaust-system branch downstream of the internal combustion engine, the rotor winding of the electric machine being energized with a preexcitation current as a function of an operating state of the NOx storage catalyst.