Method for the model-based open loop and closed loop control of an internal combustion engine

US11319888B2 · kind B2 · utility

Assignee

• Rolls-Royce Solutions, GmbH · DE

Inventors

• Knut Graichen · Ulm, DE
• Daniel Bergmann · Ulm, DE
• Roman Geiselhart · Blaustein, DE
• Jens Niemeyer · Friedrichshafen, DE
• Jörg Remele · Hagnau, DE
• Karsten Harder · Langenau, DE
• Tim Späder · Tettnang, DE

Key dates

• Filing date: Mar 26, 2021
• Grant date: May 3, 2022
• Expiry date: Mar 26, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for regulation of an internal combustion engine with an SCR catalytic converter in which the operating point of the engine is predefined by an engine control unit and the operating point of the catalytic converter is predefined by an SCR control unit. An overall system quality measure is calculated by an optimizer in accordance with fed back values of the engine control unit and fed back values of the SCR control unit, by changing the default values for the engine control unit and the SCR control unit, the optimizer minimizes the overall system quality measure for a prediction horizon regarding operating costs. On the basis of the minimized overall system quality measure the optimizer sets the default values for the engine control unit and the default values for the SCR control unit as decisive for setting the operating point of the engine and the catalytic converter.