Browse Publications Technical Papers 2006-01-0057

Assessment of a Detailed Kinetic Diesel Combustion Model by In-Cylinder Optical Measurements 2006-01-0057

The main objective of the present paper is the application of a detailed kinetic model to study diesel combustion in an optical accessible engine equipped with a common rail injection system. Three different injection schedules made of one to three consecutive injections are considered from both the numerical and the experimental point of view. The numerical model is assessed in such a way to assure its portability with respect to changing injection strategies.
The employed detailed kinetic mechanism consists of 305 reactions involving 70 species and is included in the KIVA-3V code. The considered fuel has the liquid phase properties of the diesel oil, the vapor phase properties of C14H28. It is subsequently decomposed into n-heptane and toluene. The chemical solver is based on the use of the reference species technique and on the Partially Stirred Reactor (PaSR) hypothesis. These allow maintaining the computational cost within acceptable limits.
A comparison with experimental data is made regarding the in-cylinder pressure, the visualization of the spray evolution, the temperature and OH radical distribution during the combustion process, as well as the time history of the measurable soot amount within the combustion chamber. Tail pipe emissions are also compared with the values of the in-cylinder soot and NOx amount at the end of the expansion stroke.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Soot Volume Fraction Measurements in a Gasoline Direct Injection Engine by Combined Laser Induced Incandescence and Laser Extinction Method


View Details


3-D PIV Analysis of Structural Behavior of D.I. Gasoline Spray


View Details


Fuel Distribution Effects on the Combustion of a Direct-injection Stratified-Charge Engine


View Details