Quasi-dimensional and Empirical Modeling of Compression-Ignition Engine Combustion and Emissions FKFS

Format:

Conference/Event

Author/Creator:

Grill, Grill, author.

Contributor:

Bargende, Michael

Rether, Dominik

Schmid, Andreas

Conference Name:

SAE 2010 World Congress & Exhibition (2010-04-13 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

Two combustion models are presented: A quasi-dimensional approach, based on the injection shape and an empirical model. Both models have computation times of less than one second per cycle.The quasi-dimensional approach for CI combustion discretizes the injection jet in slices. Pilot-injections are modeled as separate zones. The forecast capability and the limitations of the model are discussed on the basis of measurements. Mentioned above the base of the quasi-dimensional model is the injection rate. Often it is difficult to obtain these data. There is therefore another empirical approach for combustion, which does not need the injection rate as input.Both models have to be calibrated. This can be done by an automatic calibration tool on the basis of the advanced Powell method. The differences and advantages compared with other optimization methods are shown.Emission-simulation models are highly important in simulating CI engines. The nitrogen-oxide and soot emissions are simulated with a "combined" approach based on an inhomogeneous two-zone model

Notes:

Vendor supplied data

Publisher Number:

2010-01-0151

Access Restriction:

Restricted for use by site license