Cylinder combustion performance monitoring and control with coordinated torque control

US8307808B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Jeffrey M. Kaiser · Cadillac, US
• Timothy M. Karnjate · Grand Blanc, US
• Christopher E. Whitney · Commerce, US
• Zhong Li · Nanhu, CN
• David S. Mathews · Howell, US
• Eric Ferch · Westland, US
• Pahngroc Oh · Seoul, KR

Key dates

• Filing date: Apr 19, 2010
• Grant date: Nov 13, 2012
• Expiry date: May 28, 2031

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 includes a disturbance module, a torque correction module, a torque-to-spark module, and a spark correction module. The disturbance module determines a disturbance value for a past combustion stroke of a cylinder of an engine based on rotation of a crankshaft. The torque correction module selectively determines a torque correction for a future combustion stroke of the cylinder based on the disturbance value. The torque-to-spark module determines a spark correction based on the torque correction and determines an uncorrected spark timing based on a torque request. The spark correction module determines a corrected spark timing based on the uncorrected spark timing and the spark correction and generates spark during the future combustion stroke based on the corrected spark timing.