Securing driver requested torque

US8160796B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Joseph M. Stempnik · Warren, US
• Ronald W. Van Diepen · Ann Arbor, US
• Jinchun Peng · Westland, US
• Mark H. Costin · West Bloomfield Township, US
• Bryan D. Lehman · Fenton, US
• Xuehan Kong · Farmington Hills, US
• Jonathan Packard · Madison Heights, US

Key dates

• Filing date: Sep 23, 2009
• Grant date: Apr 17, 2012
• Expiry date: Oct 10, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An engine control system comprises a driver axle torque request module (DATRM) and a driver axle torque security module (DATSM). The DATRM determines a pedal torque request based on minimum and maximum scaling torques and a torque scalar. The DATRM determines a raw driver torque request. The DATRM selectively shapes raw driver torque request into a final driver torque request. The DATRM converts the final driver torque request into a first axle torque request. The DATSM selectively diagnoses a fault in the first axle torque request based on a minimum engine torque, the minimum scaling torque, a first comparison of the final driver torque request and the redundant final driver torque request, and a second comparison of the first axle torque request and a redundant axle torque request.