### Skapa referens, olika format (klipp och klistra)

**Harvard**

Thor, M., Andersson, I. och McKelvey, T. (2009) *Modeling, Identification, and Separation of Crankshaft Dynamics in a Light-Duty Diesel Engine*.

** BibTeX **

@conference{

Thor2009,

author={Thor, Mikael and Andersson, Ingemar and McKelvey, Tomas},

title={Modeling, Identification, and Separation of Crankshaft Dynamics in a Light-Duty Diesel Engine},

booktitle={SAE Technical Paper Series 2009-01-1798, SAE 2009 International Powertrains, Fuels & Lubricants Meeting, Florence, Italy},

abstract={Mathematical models of a torque sensor equipped crankshaft in a light-duty diesel engine are identified, validated, and compared. The models are based on in-cylinder pressure and crankshaft torque data collected from a 5-cylinder common-rail diesel engine running at multiple operating points. The work is motivated by the need of a crankshaft model in a closed-loop combustion control system based on crankshaft torque measurements. In such a system a crankshaft model is used in order to separate the measured crankshaft torque into cylinder individual torque contributions. A method for this is described and used for IMEP estimation. Not surprisingly, the results indicate that higher order models are able to estimate crankshaft torque more accurately than lower order models, even if the differences are small. For IMEP estimation using the cylinder separation method however, these differences have large effects on accuracy. Here, the performance of higher order models is significantly better than for lower order models. Also, models of odd model order perform better than models of even model order. On average, a 9th order model estimates IMEP values to within 2-3% of the reference values.},

year={2009},

}

** RefWorks **

RT Conference Proceedings

SR Electronic

ID 95175

A1 Thor, Mikael

A1 Andersson, Ingemar

A1 McKelvey, Tomas

T1 Modeling, Identification, and Separation of Crankshaft Dynamics in a Light-Duty Diesel Engine

YR 2009

T2 SAE Technical Paper Series 2009-01-1798, SAE 2009 International Powertrains, Fuels & Lubricants Meeting, Florence, Italy

AB Mathematical models of a torque sensor equipped crankshaft in a light-duty diesel engine are identified, validated, and compared. The models are based on in-cylinder pressure and crankshaft torque data collected from a 5-cylinder common-rail diesel engine running at multiple operating points. The work is motivated by the need of a crankshaft model in a closed-loop combustion control system based on crankshaft torque measurements. In such a system a crankshaft model is used in order to separate the measured crankshaft torque into cylinder individual torque contributions. A method for this is described and used for IMEP estimation. Not surprisingly, the results indicate that higher order models are able to estimate crankshaft torque more accurately than lower order models, even if the differences are small. For IMEP estimation using the cylinder separation method however, these differences have large effects on accuracy. Here, the performance of higher order models is significantly better than for lower order models. Also, models of odd model order perform better than models of even model order. On average, a 9th order model estimates IMEP values to within 2-3% of the reference values.

LA eng

DO 10.4271/2009-01-1798

LK http://dx.doi.org/10.4271/2009-01-1798

OL 30