Crank-Angle Resolved Modeling of Fuel Injection, Combustion and Emission Formation for Engine Optimization and Calibration on Real-Time Systems 2016-01-0558
The present work introduces an innovative mechanistically based 0D spray model which is coupled to a combustion model on the basis of an advanced mixture controlled combustion approach. The model calculates the rate of heat release based on the injection rate profile and the in-cylinder state. The air/fuel distribution in the spray is predicted based on momentum conservation by applying first principles. On the basis of the 2-zone cylinder framework, NOx emissions are calculated by the Zeldovich mechanism. The combustion and emission models are calibrated and validated with a series of dedicated test bed data specifically revealing its capability of describing the impact of variations of EGR, injection timing, and injection pressure. A model based optimization is carried out, aiming at an optimum trade-off between fuel consumption and engine-out emissions. The findings serve to estimate an economic optimum point in the NOx/BSFC trade-off. The real-time capability of the model is proven by running a vehicle drivecycle simulation coupled to an aftertreatment system on HiL hardware.
Citation: Poetsch, C. and Katrasnik, T., "Crank-Angle Resolved Modeling of Fuel Injection, Combustion and Emission Formation for Engine Optimization and Calibration on Real-Time Systems," SAE Technical Paper 2016-01-0558, 2016, https://doi.org/10.4271/2016-01-0558. Download Citation
Author(s):
Christoph Poetsch, Tomaz Katrasnik
Affiliated:
AVL LIST GmbH, University of Ljubljana
Pages: 19
Event:
SAE 2016 World Congress and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Nitrogen oxides
Simulators
Fuel injection
Fuel consumption
Combustion and combustion processes
Simulation and modeling
Hardware-in-the-loop
Engine cylinders
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