Circuit configuration and method for controlling a traction slip control system with brake and/or engine management

US5415468A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Michael Latarnik · Friedrichsdorf, DE
• Alexander Kolbe · Camburg, DE
• Klaus Honus · Frankfurt am Main, DE

Key dates

• Filing date: Sep 7, 1993
• Grant date: May 16, 1995
• Expiry date: Sep 7, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/213
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A circuit configuration and method for a traction slip control system which evaluates the speed (v.sub.ER) measured at a driven spare wheel with a correction factor K(t) in order to maintain or improve the control function even when a smaller size spare wheel has been mounted. This correction factor (K(t)) is determined by axlewise comparison of the rotating speeds (v.sub.na1, v.sub.na2 ; v.sub.a, v.sub.ER) of the wheels of one axle and by comparison of the speed differences measured on the driven and nondriven axles, with traction slip control being inactive. Upon transition from a very slippery road surface (.mu..sub.low homogeneous) to a dry road surface (.mu..sub.high homogeneous), without any prior determination of the correction factor, the slip threshold (S) is raised temporarily. When starting with different right/left friction coefficients (.mu.-split), with the spare wheel being mounted on the high friction coefficient side, a higher slip threshold (S.sub.ER) will be effective for this spare wheel.