Electronically controllable brake booster

US6422123B1 · kind B1 · utility

Assignee

• Lucas Industries plc · GB

Inventors

• Christoph Linden · Vallendar, DE
• Gregor Godlewsky · Bendorf, DE

Key dates

• Filing date: Mar 31, 2000
• Grant date: Jul 23, 2002
• Expiry date: Mar 31, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/4854
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In an electronically controllable brake booster a value is sensed which is characteristic for the actual pressure characteristic in the pressure chamber. The actual pressure characteristic is checked for the existence of periodic oscillation components of a predetermined frequency band with a predetermined minimum amplitude. Upon the existence of such periodic oscillation components, the current flowing through an electromagnetic actuator for a control valve arrangement of the brake booster is decreased by a first predetermined value for a first pressure changing position. Further, the current for a second pressure changing position is decreased by second predetermined value.