Method and device for operating a drive unit

US7381149B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dirk Hartmann · Aßling, DE
• Werner Mezger · Weinsberg, DE
• Andreas Roth · Karlsruhe, DE
• Juergen Rappold · Beilstein, DE
• Georg Mallebrein · Stuttgart, DE
• Nikolas Poertner · Stuttgart, DE
• Henri Barbier · Schwieberdingen, DE
• Ingo Fecht · Ludwigsburg, DE

Key dates

• Filing date: Jun 19, 2006
• Grant date: Jun 3, 2008
• Expiry date: Feb 2, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60W30/182
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method and a device for operating a drive unit provide a switch between half-engine operation and full-engine operation. A switch takes place between two operating states of a first component of the drive unit as a function of a first performance quantity of the drive unit. A switch takes place between two operating states of a second component of the drive unit as a function of a second performance quantity of the drive unit. A check is performed whether switching between two operating states of the second component results in a shift of the first performance quantity over a switching threshold for switching between two operating states of the first component, and if so, the switch between the two operating states of second component is delayed until a switch between the two operating states of first component has occurred.