Drive systems for a motor vehicle and methods for operating the same

US6543561B1 · kind B1 · utility

Assignee

• Continental ISAD Electronic Systems GmbH & Co., oHG · DE

Inventors

• Thomas Pels · Achern, DE
• Klaus Revermann · Schwerinsdorf, DE

Key dates

• Filing date: Sep 27, 2000
• Grant date: Apr 8, 2003
• Expiry date: Sep 27, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/946
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to drive systems for a motor vehicle, with an internal combustion engine (1) and at least one electric machine (6, 6′), each of which can be used independently as a drive motor for the vehicle, the drive systems being constructed in such a way that the vehicle drive-away phase proceeds as follows:i) the vehicle is initially accelerated by the electric machine (6, 6′) alone,ii) during this process, the internal combustion engine (1) is started,iii) the internal combustion engine (1) then takes over the driving of the vehicle,jerky coupling of the internal combustion engine (1) in the course of steps i) to iii) being avoided either bya) entraining the internal combustion engine (1) while the electric machine (6, 6′) is accelerating the vehicle, orb) the internal combustion engine (1) being accelerated for the purpose of starting while decoupled from the drive and being coupled to the drive at the synchronous speed.The invention is also directed towards corresponding methods for operating a drive system.