Process for influencing the parameters of a car's dynamic behavior

US6324460A · kind A · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Ronald Lehmer · Homburg, DE
• Robert Schmidt · Schopfheim, DE

Key dates

• Filing date: May 6, 1999
• Grant date: Nov 27, 2001
• Expiry date: May 6, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/416
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

To set the brake or traction slip of a wheel at the maximum of the frictional value/slip curve, it is necessary that the wheel sensor associated with each wheel to sense its rotational speed is in a state of operation. Otherwise it is not possible to ascertain the slip of the respective wheel. In order to ensure an emergency function for influencing driving dynamics parameters even in the event of malfunction of a wheel sensor, the present invention discloses performing a two-point control when a wheel sensor is defective. A first operating point (A) lies at a longitudinal slip equal to zero, and a second operating point (B) lies at a longitudinal slip of 100%. Without a longitudinal slip, lateral forces can be transmitted to their maximum, whereas at 100% longitudinal slip longitudinal forces can still be transmitted almost to their maximum.