Method and system for exhaust-gas heat management

US11002172B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Thomas Zenner · Lehrte, DE
• Martin Wirth · Hitzendorf, AT
• Lars Kaufmann · Tauberbischofsheim, DE
• Mehmet Toeremis · Pulheim, DE
• Daniel Benjamin Kok · Ann Arbor, US

Key dates

• Filing date: Jun 20, 2018
• Grant date: May 11, 2021
• Expiry date: Oct 4, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A exhaust-gas heat management system includes a catalytic converter in the exhaust-gas train of an internal-combustion engine, a cover enclosing the catalytic converter, and thereby realizing a cavity for holding a latent-heat storage PCM, at least two fluid connections between the cavity and the collecting vessel, and a pump device for activating and deactivating a PCM circuit between the cavity and the collecting vessel by means of the fluid connections. A method comprises determining an operating state of the internal combustion engine, determining the catalytic converter temperature, determining the PCM temperature, activating the PCM circuit if the PCM temperature is above a phase transition temperature of the PCM, and the internal combustion engine is in a switched-on operating state or the internal combustion engine is in a switched-off operating state and the catalytic converter temperature is below a light-off temperature of the catalytic converter.