Method of distributing brake pressure to the axles of a motor vehicle with an ABS pressure-medium brake

US5163742A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Bernhard Topfer · Stuttgart, DE
• Norman Millner · Stuttgart, DE
• Ali Aminpour · Waiblingen, DE
• Wolfgang Scheer · Holzkirchen, DE

Key dates

• Filing date: Mar 8, 1991
• Grant date: Nov 17, 1992
• Expiry date: Mar 8, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S303/04
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method utilizes components of an existing anti-lock brake system (ABS) in order thereby to achieve an automatically self-optimizing inter-axle brake-pressure distribution acting far below the wheel lock limit. For this purpose, the brake pressure and, hence, the brake-force distribution are regulated axle-specifically far below the wheel lock limit too. An immediate dynamic intervention is, on one hand, effected in the case of sufficiently large wheel-speed differences between the axles. On the other hand, an adaptive predetermination of correct brake-force distributions is made the basis for each current regulating intervention. Even before the occurrence of large speed differences, the brake-force distribution expedient in each case for these is here predictively determined, stored, and, if required, correspondingly adapted to current requirements, i.e. corrected, in the course of subsequent dynamic braking demands. Requisite determination parameters are obtained for each journey either via characteristic diagrams specific to the family of vehicles or are determined individually on the individual vehicle by a learning approximation routine.