Method for testing a vibration damper of a motor vehicle in the installed state, and vibration damper-test system for a motor vehicle

US8452552B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenter Nobis · Wissen, DE
• Daniel Wegener · Aachen, DE
• Steffen Abraham · Hildesheim, DE

Key dates

• Filing date: Jun 4, 2009
• Grant date: May 28, 2013
• Expiry date: Mar 20, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2600/1873
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for checking a vibration damper of a motor vehicle in the installed state includes setting start values of the damping constant kA, the spring rate cA, and the body mass mA for a wheel of a motor vehicle; inducing a vertical vibration of the motor vehicle with the aid of a defined excitation sRreal; determining the theoretical body vibration excursion sAmodel; optically detecting the positions of the wheel and the body shell of the motor vehicle at a plurality of detection instants during the vibration; minimizing the error function formed from the deviations between the theoretical body vibration excursion sAmodel and the observed body vibration excursion sAreal at the detection instants, and determining the damping constant kA, the spring rate cA, and the body mass mA therefrom; and determining the damping measure θ of the vibration damper.