Antilock control system

US5645327A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Leo Steinke · Waiblingen, DE
• Armin Czinczel · Schwetzingen, DE
• Thomas Isella · Markgröningen, DE

Key dates

• Filing date: Mar 3, 1995
• Grant date: Jul 8, 1997
• Expiry date: Mar 3, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/17616
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The wheel speeds are measured by wheel speed sensors and are fed to an evaluation circuit. By way of the evaluation circuit, brake pressure control signals at least for increasing pressure and for decreasing pressure for a specific duration are then produced for the closed-loop/open-loop control of the wheel movement behavior. Moreover, brake pressure control signals are also usually output by the evaluation circuit in order to keep the brake pressure constant. These brake pressure control signals are fed to brake pressure control units for varying the brake pressure. The core of the invention consists in the fact that the duration at least of the first decrease in brake pressure at the front wheels is selected to be dependent on the speed of the vehicle at the start of braking.