Device and method for securing the standstill of a motor vehicle

US7627415B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Oliver Tschernoster · Munich, DE
• Carsten Hass · Goldkronach, DE
• Sonja de Castro Bonfim · Munich, DE
• Leander Kempenaars · Munich, DE
• Christian Scheinost · Ergolding, DE
• Bartono Adiprasito · Albersbach, DE
• Maria-Christina Laiou · Munich, DE
• Andreas Pfeiffer · Nuremberg, DE

Key dates

• Filing date: Feb 1, 2008
• Grant date: Dec 1, 2009
• Expiry date: Feb 1, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2201/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a device for securing the standstill of a motor vehicle with a distance-related longitudinal dynamic control module, which is contained in at least one electronic control unit and by which the motor vehicle is decelerated down to a standstill while maintaining a defined distance from a target object, at least until reaching the standstill, a nominal brake torque is defined by the longitudinal dynamic control module for a brake control module. At a defined first time after a detected standstill of the motor vehicle, the longitudinal dynamic control module transmits a transfer signal to the brake control module. Thereupon, independently of the predefinition of a nominal brake torque by the longitudinal dynamic control module, the brake control module alone builds up and/or holds a wheel brake torque in the sense of a parking brake function. At a defined second time after a start command, the longitudinal dynamic control module defines again, by itself, a nominal brake torque, starting at the actual brake torque that is on hand at this time, for the purpose of decreasing the wheel brake torque.