Method for error recognition and error avoidance when switching an automated gearbox as well as an automated gearbox

US7448291B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Frank Stengel · Bühl, DE
• Alexander Schweizer · Laufenburg (Baden), DE
• Martin Zimmermann · Sasbach, DE
• Behzad Nazari · Leverkusen, DE
• Joachim Hirt · Oberkirch, DE
• Martin Fuss · Karlsruhe, DE
• Matthias Ehrlich · Laufenburg (Baden), DE
• Jens Martin · Frankfurt am Main, DE

Key dates

• Filing date: Aug 31, 2005
• Grant date: Nov 11, 2008
• Expiry date: May 28, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19288
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

To improve the safety of automated gearboxes, it is proposed that terminal positions of internal gearshift members and external actuation members be so defined separately from each other that one can recognize whether the engagement of a speed is accompanied by the attainment of a terminal position of an internal gearshift member or an external actuation member. Error analysis is possible in this way. For dual clutch gears, it is additionally proposed that one can, at least in gearshift operations that are critical in terms of safety, disengage on speed of a subgear in a separate procedure, before a new speed of this subgear can be engaged.