Method and device for operating especially an automatic or automated gearbox comprising a parking brake and a runaway locking mechanism

US7374511B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Reinhard Berger · Bühl, DE
• Alexander Schweizer · Laufenburg (Baden), DE
• Dietmar Lang · Regenstauf, DE
• Klaus Kuepper · Laufenburg (Baden), DE
• Burkhard Pollak · Bogen, DE
• Juergen Benz · Oberkirch, DE

Key dates

• Filing date: Feb 7, 2007
• Grant date: May 20, 2008
• Expiry date: Feb 7, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/20085
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out using at least one electrically driven actuator, gear positions can be selected by using a selector device, and the parking brake can be activated by using the selector device when the vehicle is stationary or moving slowly. A vehicle provided with an additional gearbox. An ignition key can only be removed, when the gearbox is in a P state and the additional gearbox is not in the N state. A further method and device, whereby the additional gearbox can only be shifted in the N state when the gearbox is not in the P state. Further methods and a device in which automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked.