Abstract To effectively use Computational Fluid Dynamics (CFD) for engine emission development it is necessary to be able to simulate the scavenging flow in the engine. The CFD model for a stratified charged two-stroke engine is even more complex. This model have been tuned and validated with engine tests. Then a procedure has been developed to increase the efficiency of these complete engine CFD simulations. A CFD model has been made of the Husqvarna 560XP two-stroke stratified charged chainsaw engine. The model contains piston, cylinder, inlet system ducting and exhaust muffler. The simulation runs with moving deforming mesh with all ports active. The airflow levels have been fine-tuned with inlet restrictions similar to those that is caused by the air filter and air filter holder. The results and behaviour of the CFD model has a good match to the measured values of the finished product. This gives us confidence in the model and several aspects can now be studied that is virtually impossible to capture by other means.
Stratified charged two-stroke engine CFD development and verification
2017-01-01
20 pages
Article/Chapter (Book)
Electronic Resource
English
CFD Scavenging Simulation and Verification of a Sequentially Stratified Charged Two-Stroke Engine
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