Brake unit for automotive vehicles with electric drive

US5472264A · kind A · utility

Assignee

• ITT Automotive Europe GmbH · DE

Inventors

• Hans-Christof Klein · Hattersheim, DE
• Peter Drott · Frankfurt am Main, DE
• Peter Lohberg · Friedrichsdorf, DE
• Juergen Balz · Wiesbaden, DE

Key dates

• Filing date: Jan 24, 1994
• Grant date: Dec 5, 1995
• Expiry date: Jan 24, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/92
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A brake unit for automotive vehicles with electric drive is configured in the shape of a multiple-circuit compound system consisting of hydraulic friction brakes of brake circuits (I, I', I", III, III', III") and of an electroregenerative brake system (circuit II, II', II"). In a vehicle with a driven and a non-driven axle, three brake circuits exist, one brake circuit of which (I, I', I") is comprised of a pedal-actuated hydraulic brake pressure master unit (2) and of friction brakes (3, 4) acting upon the non-driven wheels. The second brake circuit (II, II', II") which represents an electroregenerative brake system is directly or indirectly coupled to the brake pedal and acts upon the driven wheels. The third brake circuit (III, III', III") which is comprised of friction brakes (10, 11) also acts upon the driven wheels. The actuation of the wheel brakes (10, 11) is connected to the second and third brake circuits. The distribution of the brake power to the front axle (VA) and to the rear axle (HA) is controlled with the aid of an electronic controller (7, 7',7").