Method and apparatus for controlling a hybrid powertrain system

US8271173B2 · kind B2 · utility

Assignees

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
• Daimler AG · DE
• Chrysler Group LLC · US
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Marek L. Wilmanowicz · Pinckney, US
• Matthew Leonard Kaufer · Holly, US
• Mark Potter · Davisburg, US
• Anthony H. Heap · Ann Arbor, US
• William R. Cawthorne · Milford, US
• Michael Bolton · Oshkosh, US

Key dates

• Filing date: Oct 1, 2008
• Grant date: Sep 18, 2012
• Expiry date: Jun 14, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/64
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A control method for vehicular hybrid powertrain system includes monitoring operator inputs to an accelerator pedal and a transmission gear selector, and determining an operator torque request based upon the operator inputs to the accelerator pedal and the transmission gear selector. Torque output from the electric machine is commanded based upon the operator torque request. Engine output is controlled based upon the operator torque request and the commanded torque output from the electric machine. Vehicle hood position is monitored and the engine output is controlled correlative to the operator input to the accelerator pedal when the monitored position of the vehicle hood is open and the operator input to the transmission gear selector is one of a PARK and a NEUTRAL position.