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B-splines for Diese...
B-splines for Diesel Engine Emission Modeling
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- Grahn, Markus, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Krister (author)
- Volvo Cars
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- McKelvey, Tomas, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9783902823168
- 2012
- 2012
- English.
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In: IFAC Proceedings Volumes (IFAC-PapersOnline). - 1474-6670. - 9783902823168 ; 45, s. 416-423
- Related links:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Subject headings
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- The equivalence between linear interpolation and B-spline functions of degree 1 is described. The equivalence is used to express interpolation based diesel engine NOX and soot emission models as B-spline functions, and to apply data fitting methods for B-spline functions to perform calibration of the models. This strategy leads to that the model calibration can be calculated directly by means of analytically solving a minimization problem. The B-spline representation also makes it possible to control the smoothness and extrapolation behavior of the interpolation maps in the models in a controlled manner. The models have been calibrated using measured steady-state data from a 5-cylinder Volvo passenger car diesel engine with a displacement volume of 2.4 liters, equipped with a turbocharger, an exhaust gas recirculation system, and a common rail injection system. The calibrated model for NOX emissions predicts the NOX mass ow with a root mean square error of 1.6 mg/s, and the calibrated model for soot emissions predicts the soot mass ow with a root mean square error of 0.65 mg/s. The described equivalence between linear interpolation and B-spline functions of degree 1 could also be used for calibration of other models of similar structure.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Annan maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Other Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- Interpolation
- Splines
- Diesel engines
- Engine modeling
Publication and Content Type
- kon (subject category)
- ref (subject category)
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