An Experimental Evaluation of Torque Sensor Based Feedback Control of Combustion Phasing in an SI-engine
Journal article, 2005

Feedback control of combustion phasing based on a crankshaft integrated torque sensor was developed for a spark ignited five cylinder engine. A cylinder individual measure for combustion phasing, called 50% torque ratio, is extracted from the torque signal and used by a spark advance controller. The estimated torque ratio is based on a simplified estimation algorithm where torsional resonances in the crankshaft are neglected, thus limiting the operating range up to a maximum of about 2000 rpm. The torque ratio measure has been compared with the existing measure 50% burned mass fraction, and proven to be a reliable measure for combustion phasing. The spark advance controller has been evaluated by using internal EGR changes as combustion disturbances and an examination of its cylinder balancing properties was performed.

control

Engine

Author

Stefan Larsson

Chalmers, Signals and Systems, Systems and control

Ingemar Andersson

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

SAE Technical Paper Series 2005-01-0060

Areas of Advance

Transport

Energy

Subject Categories

Computer and Information Science

DOI

10.4271/2005-01-0060

More information

Latest update

4/7/2020 2