Method for filling a cooling circuit of a motor vehicle with a coolant

US11454160B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Peter Englert · Bad Friedrichshall, DE
• Lukas Hinderer · Altdorf, DE
• Lars Kaminski · Scharnhauser Park, DE
• Oliver Mamber · Markgröningen, DE
• Nic Sautter · Plochingen, DE

Key dates

• Filing date: Feb 16, 2021
• Grant date: Sep 27, 2022
• Expiry date: Mar 20, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01P2011/068
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for filling a cooling circuit of a motor vehicle with a coolant may include filling the cooling circuit with ion-free water in a water filling operation, leaving the ion-free water in the cooling circuit for a water duration of action in a water operation of action, displacing the ion-free water out of the cooling circuit via filling the cooling circuit with a passivating agent in a passivating operation, rinsing the cooling circuit with ion-free water such that the ion-free water at least dilutes the passivating agent in the cooling circuit and a liquid including at least one of the ion-free water and the passivating agent remains in the cooling circuit in a rinsing operation, displacing the liquid out of the cooling circuit via filling the cooling circuit with the coolant in a coolant filling operation, and/or fluidically sealing the cooling circuit towards an outside in a sealing operation.