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Heavy-Duty Diesel Combustion With Ultra-Low NOx and SOOT Emissions~A Comparison Between Experimental Data and CFD Simulations

Tobias Husberg (Institutionen för tillämpad mekanik ; Institutionen för tillämpad mekanik, Förbränning och Flerfasströmning) ; Ingemar Denbratt (Institutionen för tillämpad mekanik, Förbränning och Flerfasströmning) ; Johan Engström ; Monica Ringvik
SAE World Congress SAE Paper 2005-01-0380, (2005)
[Konferensbidrag, refereegranskat]

Experiments were conducted with a single cylinder heavy duty research engine, based on the geometry of a Volvo Powertrain D12C production engine. For these tests the engine was configured with a low compression ratio, low swirl, common rail fuel injection system and an eight-orifice nozzle. The combustion process was visualized by video via an inserted endoscope. From the resulting images temperatures were evaluated with the two-color method. In addition, the combustion and emission formation were simulated using the multiple flamelet concept implemented in the commercial CFD code STAR-CD. The models used in this paper are considered state-of-the-art. The purpose of this paper is to demonstrate the possibilities offered by combining several methods in the evaluation of novel engine concepts. Therefore, results from the optical measurements, the CFD simulations and global emission experimental data were compared. Combining the methods shows a great opportunity to understand phenomena associated with new combustion concepts involving long ignition delay, low temperature, and ultra low emissions.



Denna post skapades 2007-09-06. Senast ändrad 2007-09-06.
CPL Pubid: 47146

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik
Institutionen för tillämpad mekanik, Förbränning och Flerfasströmning (2005-2006)

Ämnesområden

Teknisk mekanik
Energiteknik
Strömningsmekanik

Chalmers infrastruktur