Method for controlling an internal combustion engine including at least one exhaust-gas aftertreatment component having an electric heating element

US12092001B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Thomas Zein · Sindelfingen, DE
• Andreas Fritsch · Eggstätt, DE
• Michael Bachner · Stuttgart, DE

Key dates

• Filing date: Jul 19, 2023
• Grant date: Sep 17, 2024
• Expiry date: Jul 19, 2043

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/228
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for controlling an internal combustion engine including at least one exhaust-gas aftertreatment component having an electric heating element, the electric heating element heating the exhaust-gas aftertreatment component and the exhaust gas flowing through the exhaust-gas aftertreatment component, the electric heating element briefly or permanently being acted upon by a heating current, a gas, in particular fresh air and/or exhaust gas, flowing downstream through the exhaust-gas path. In the method, a first temperature upstream from the at least one exhaust-gas aftertreatment component is ascertained, a second temperature downstream from the exhaust-gas aftertreatment component is ascertained, and the exhaust-gas mass flow of the internal combustion engine is ascertained as a function of a first temperature difference between the first and the second temperature and a heating power of the electric heating element, and the internal combustion engine is controlled as a function of the exhaust-gas mass flow.