Process for controlling the shifting process of an automatic vehicle gear, and control device

US6134496A · kind A · utility

Assignee

• Voith Turbo GmbH & Co. KG · DE

Inventors

• Erwin Rotter · Nattheim, DE
• Thomas Schonhaar · Oberkochen, DE
• Wilfried Maier · Eppingen, DE
• Friedrich Haberle · Lauchheim, DE
• Herbert Depping · Giengen an der Brenz, DE

Key dates

• Filing date: Sep 11, 1997
• Grant date: Oct 17, 2000
• Expiry date: Sep 11, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/0096
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for the control of the shifting process of a vehicle with electro-hydraulically actuatable friction elements for the shifting-over between different transmission stages in a vehicle with at least in addition a drive engine in which a current actual value is determined for at least one magnitude characterizing the shift process in each shifting process; the actual value is compared with an establishable and/or storable desired value; on deviation of the actual value from the desired value, the control pressure for the at least indirect influencing of the magnitude characterizing the switching process is adaptively changed by a determinable, calculatable or prescribable first correction value for the achieving of an optimal shifting behavior and the course of the altered magnitude is storable in each case as new characteristic curve of the desired values. The invention is characterized by the following features: in at least the shifting processes in which through a further adaption no satisfactory shifting courses can any longer be insured, at least one actual value--the drive turning rate--is determined for a magnitude characterizing the accelerati…