Method for operating a drive train for driving a working machine with variable rotation speed and drive train

US10876612B2 · kind B2 · utility

Assignee

• Voith Patent GmbH · DE

Inventors

• Peter Goretzki · Wallhausen, DE
• Hartmut Graf · Neukirchen, DE
• Thomas Taeuber · Crailsheim, DE

Key dates

• Filing date: Jan 9, 2018
• Grant date: Dec 29, 2020
• Expiry date: Jan 9, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/20
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method operates a drive train for driving a working machine with variable rotation speed. The method includes running up the electric drive machine from a standstill with evacuated hydrodynamic rotation speed/torque converter to a predefined value which indirectly characterizes the operating mode of the drive machine. Simultaneously with reaching the predefined value which indirectly characterizes the operating mode of the drive machine or with a temporal offset after reaching this, filling the hydrodynamic rotation speed/torque converter and driving the turbine vane wheel. Thereafter, the third element of the planetary gear mechanism is driven with a rotation speed which results from a superposition, defined by the planetary gear mechanism, of the rotation speed of the first element of the planetary gear mechanism connected to the electric drive machine and the rotation speed of the second element of the planetary gear mechanism which is indirectly connected to the turbine wheel.