An Experimental Evaluation of Torque Sensor Based Feedback Control of Combustion Phasing in an SI-engine
2005-01-0060
04/11/2005
- Event
- Content
- 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.
- Pages
- 11
- Citation
- Larsson, S., and Andersson, I., "An Experimental Evaluation of Torque Sensor Based Feedback Control of Combustion Phasing in an SI-engine," SAE Technical Paper 2005-01-0060, 2005, https://doi.org/10.4271/2005-01-0060.