Process and apparatus for braking a hybrid-drive motor vehicle

US5788597A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Wolf Boll · Waiblingen, DE
• Herbert Botzelmann · Winnenden, DE
• Peter Antony · Lorch, DE

Key dates

• Filing date: Dec 22, 1995
• Grant date: Aug 4, 1998
• Expiry date: Dec 22, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/947
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a process and apparatus for braking a hybrid drive vehicle, kinetic vehicular energy is converted by the driving electric motor into electrical power, which alternatively can be absorbed by charging a traction battery or by driving a combustion engine via a generator coupled to the engine, which is functioning as a motor. According to the invention, engine braking is activated if the traction battery is fully charged, if its temperature lies outside a predetermined charging temperature range, or if the charging current due to the electrical power supplied by the driving electric motor exceeds a predetermined limit value.