This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Validation of a Self Tuning Gross Heat Release Algorithm
Technical Paper
2008-01-1672
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The present paper shows the validation of a self tuning heat release method with no need to model heat losses, crevice losses and blow by. Using the pressure and volume traces the method estimates the polytropic exponents (before, during and after the combustion event), by the use of the emission values and amount of fuel injected per cycle the algorithm calculates the total heat release. These four inputs are subsequently used for computing the heat release trace. The result is a user independent algorithm which results in more objective comparisons among operating points and different engines.
In the present paper the heat release calculated with this novel method has been compared with the one computed using the Woschni correlation for modeling the heat transfer. The comparison has been made using different fuels (PRF0, PRF80, ethanol and iso-octane) making sweeps in relative air-fuel ratio, engine speed, EGR and CA 50.
Recommended Content
Authors
Topic
Citation
Manente, V., Vressner, A., Tunestal, P., and Johansson, B., "Validation of a Self Tuning Gross Heat Release Algorithm," SAE Technical Paper 2008-01-1672, 2008, https://doi.org/10.4271/2008-01-1672.Also In
References
- Rassweiler, G. M. Withrow L. 1938 Motion pictures of engine flames correlated with pressure cards SAE Transactions
- Agrell, Fredrik Eriksson Bengt Angstrom Hans-Erik Wikander Jan Linderyd Johan 2005 Control of HCCI during transients by aid of variable valve timings through the use of model-based non-linear compensation SAE Technical Paper 2005-01-0131
- Gatowski, J. A. et al. 1984 Heat release analysis of engine pressure data SAE Transactions. SAE paper 841359
- Eriksson, Lars 1998 Requirements for and a systematic method for identifying heat release model parameters SAE Technical Paper 980626
- Tunestal, P. Self Tuning Cylinder Pressure Based Heat Release Computation Proceedings of the IFAC Symposium on Advances in Automotive Control Monterey Coast, California August 2007
- Olsson, Jan-Ola Tunestål Per Ulfvik Jonas Johansson Bengt 2003 The effect of cooled EGR on emissions and performance of a turbocharged HCCI engine SAE Technical Paper 2003-01-0743
- Woschni G. 1967 Universally Applicable Equation for Instantaneous Heat Transfer Coefficient in Internal Combustion Engines SAE Technical Paper 670931
- Tunestal, Per 2001 Estimation of the In-Cylinder Air/Fuel Ratio of an Internal Combustion engine by the Use of Pressure Sensors Lund University, Faculty of Engineering
- Matekunas, F. A. 1983 Modes and Measures of Cyclic Combustion Variability SAE Technical Paper 830337
- Markus Klein 2007 Single Zone Cylinder Pressure Modeling and Estimation for Heat Release of SI Engines Linkoping University, Faculty of Electrical Engineering