Self-propelling work machine and method for braking such a work machine

US10112600B2 · kind B2 · utility

Assignee

• Liebherr-Components Biberach GmbH · DE

Inventors

• Markus Merkle · Munderkingen, DE
• Juergen Resch · Bad Schussenried, DE
• Sebastien Nicolas Hoffmann · Colmar, FR
• Burkhard Richthammer · Glückstadt, DE
• Bernd Sommer · Zell am Harmersbach, DE
• Stefan Duelli · Eberhardzell, DE

Key dates

• Filing date: Sep 18, 2017
• Grant date: Oct 30, 2018
• Expiry date: Sep 18, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/93
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Methods and systems are provided related to a self-propelling work machine in the form of a tracked vehicle having an electric drive, with a generator drivable by an internal combustion engine, an auxiliary unit connected to the engine, and a braking apparatus for braking the work machine. The braking apparatus provides regenerative braking by the electric drive and comprises a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the engine and on the auxiliary unit. A controller automatically increases or decreases the electrical load of the auxiliary unit based on the electrical motor braking power fed back to the engine and/or based on an engine speed.