Method for controlling a gear-change operation in automatic transmissions

US6456919B1 · kind B1 · utility

Assignee

• Voith Turbo GmbH & Co. KG · DE

Inventors

• Tillman Körner · Zang, DE
• Bernd Dietzel · Syrgenstein, DE
• Gunter Willmerding · Oberstotzingen, DE
• Franz Trübswasser · Heidenheim, DE
• Jakob Haeckh · Sontheim, DE
• Herbert Depping · Giengen an der Brenz, DE

Key dates

• Filing date: Nov 7, 2000
• Grant date: Sep 24, 2002
• Expiry date: Nov 7, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/0216
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A process for the control of switching or shifting processes in automatic gears with an allocatable control device for use in drivelines of vehicles with at least one drive motor, especially in the form of an internal combustion engine. In a first process step the actual values of certain travel-dynamics magnitudes for a given time point to are detected or calculated; in a second process step there is determined from the actual values a theoretically achievable connection speed of the drive motor, especially the internal combustion engine, in the actually shifted-in gear for each time step; in a third process step the ascertained connection speed is compared with limit speeds that can be stipulated in a characteristic field of the drive motor, in which in dependence on the comparison results in no switching process, or an upshift- or downshift- switching process is initiated by governing of the setting members actuatable for the carrying-out of a gear change.