Method for detecting powertrain torque output

US8457847B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Dongxu Li · Hunan, CN
• Kumaraswamy V. Hebbale · Troy, US
• Chunhao I. Lee · Troy, US
• Farzad Samie · Franklin, US
• Chi-Kuan Kao · Troy, US
• Ming Cao · 安丰镇, CN

Key dates

• Filing date: Sep 28, 2010
• Grant date: Jun 4, 2013
• Expiry date: Jul 13, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A powertrain includes a transmission coupled to a driveline. A method for monitoring torque of the driveline includes monitoring signals from first and second rotational sensors located at respective first and second rotationally-coupled positions of the driveline separated by a distance along the driveline, determining rotation of the driveline at the first and second rotationally-coupled positions from said signals, determining a twist angle derived from a difference between the rotations of the driveline at the first and second rotationally-coupled positions, calculating a driveline torque corresponding to the twist angle, and controlling operation of the powertrain in response to the driveline torque.