Safety arrangement for a vehicle and method for controlling a safety arrangement

US8157291B2 · kind B2 · utility

Assignee

• Autoliv Development AB · SE

Inventors

• Johann Mayer · Wernberg-Köblitz, DE
• Thomas Schmidbauer · Rockenhausen, DE
• Thomas Wohllebe · Braunschweig, DE
• Mark Gonter · Lehrte, DE

Key dates

• Filing date: Jan 13, 2009
• Grant date: Apr 17, 2012
• Expiry date: Jan 13, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/23384
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A safety arrangement for a motor vehicle includes an airbag and a crash sensor system. The airbag is normally folded together in a non-activated basic state and is able to be inflated with different volumes. The crash sensor system detects a vehicle impact and emits an activation signal. The crash sensor system includes both a pre-crash sensor system and also an in-crash sensor system, and emits a pre-crash activation signal as activation signal upon detection of an impending collision. The in-crash sensor system detects an actual impact and emits an in-crash activation signal (backup) if the pre-crash sensor system has previously not detected the impending collision and has not emitted a pre-crash activation signal. The airbag may be inflated to a larger airbag volume and to a relatively smaller airbag volume in an in-crash mode.