Method for operating a motor vehicle having at least two drives and a motor vehicle having at least two drives

US8700245B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Karl-Heinz Meitinger · Birkenfeld, DE
• Michael Wein · Houston, US
• Sebastian Strasser · Ingolstadt, DE
• Martin Werner · Langenau, DE

Key dates

• Filing date: Mar 29, 2011
• Grant date: Apr 15, 2014
• Expiry date: Mar 29, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/7072
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a motor vehicle having two, in particular electrical, drives, a partial torque is in each case intended to be assigned to the individual drives from a demanded total torque, to be precise taking account of the energy efficiency on the one hand and the stability of the vehicle on the other hand. A first controller is responsible for taking account of the energy efficiency, and predetermines a bandwidth of possible partial torques for an individual drive. This bandwidth may be restricted by a second controller, when driving stability requires this. The second controller is coupled to appropriate sensors (yaw rate sensor, lateral acceleration sensor, longitudinal acceleration sensor) and knows the steering angle φ. In the course of interchanging data signals with a first control device, the partial torques are defined with the involvement of the second control device, for which purpose the first control device emits control commands.