Blended braking management in powertrain systems

US8437937B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Thomas E. Ganley · Novi, US
• Sean W. McGrogan · Ann Arbor, US
• William R. Cawthorne · Milford, US
• Hanne Buur · Brighton, US
• Alexander K. Rustoni · Oxford, US
• Anthony H. Heap · Ann Arbor, US

Key dates

• Filing date: Nov 1, 2010
• Grant date: May 7, 2013
• Expiry date: Apr 28, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T13/745
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for operating a powertrain system including a torque machine coupled to a drive wheel of a vehicle includes determining a regenerative braking capacity of the powertrain system. In response to a net operator torque request including a braking torque request, a friction braking torque command to operate a friction brake system and a regenerative braking torque request for the torque machine are coincidentally generated, a torque command is generated for controlling operation of the torque machine in response to the regenerative braking torque request, and the friction braking torque command is adjusted by an amount corresponding to a difference between the braking torque request and the regenerative braking torque request.