Driver torque request systems and methods

US8538644B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Christopher E. Whitney · Commerce, US
• Robert C. Simon, Jr. · Novi, US
• William L. Aldrich, III · Davisburg, US
• Jun Lu · Novi, US
• Birendra P. Bhattarai · Novi, US
• Adam J. Heisel · South Lyon, US
• Ning Jin · Novi, US

Key dates

• Filing date: Apr 20, 2010
• Grant date: Sep 17, 2013
• Expiry date: Sep 19, 2031

Classification

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

Abstract

A minimum torque module selectively determines a first minimum propulsion torque based on second and third minimum propulsion torques when a torque converter clutch is in unlocked and locked states, respectively. A zero pedal torque module selectively sets a zero pedal torque equal to the first minimum propulsion torque. A pedal request module determines a pedal torque request based on an accelerator pedal position, a vehicle speed, and the zero pedal torque. A driver request module determines a driver axle torque request based on the pedal torque request. A shaping module selectively shapes the driver axle torque request into a shaped driver axle torque request. A conversion module converts the first minimum propulsion torque into a minimum axle torque. A final driver request module sets a final driver axle torque request equal to a greater of the shaped driver axle torque request and the minimum axle torque.