Method for ascertaining a torque accuracy of a torque transmitted from a belt-driven starter-generator of an internal combustion engine to the internal combustion engine

US10557449B2 · kind B2 · utility

Assignee

• SEG Automotive Germany GmbH · DE

Inventors

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

Key dates

• Filing date: Jun 15, 2016
• Grant date: Feb 11, 2020
• Expiry date: Jul 12, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for ascertaining a torque accuracy of a torque transmitted from a belt-driven starter-generator of an internal combustion engine to the internal combustion engine, which is similar to a learning process or a calibration of the actual torque of the starter-generator with respect to a setpoint torque, includes controlling the belt-driven starter-generator to transmit a specified test torque to the internal combustion engine during a predefined test time interval during coasting down of the internal combustion engine, determining a speed variable that is dependent on a speed of the internal combustion during the test time interval, comparing the speed variable to a reference variable, and deducing the torque accuracy from this comparison.