Numerical Modeling and Experimental Study of Combustion and Soot Formation in a Direct Injection Diesel Engine

2007 ◽  
Vol 21 (3) ◽  
pp. 1483-1492 ◽  
Author(s):  
T. L. Chan ◽  
X. B. Cheng
Keyword(s):  
Experimental Study ◽  
Numerical Modeling ◽  
Diesel Engine ◽  
Soot Formation ◽  
Direct Injection ◽  
Direct Injection Diesel Engine

Numerical Modeling of Combustion Processes and Pollutants Formation in Direct Injection Diesel Engine

2002 ◽  
Author(s):  
Hoo-Joong Kim ◽  
Nam-Il Heo ◽  
Yong-Mo Kim ◽  
Sung-Mo Kang ◽  
Jae-Hyun Ahn
Keyword(s):  
Numerical Modeling ◽  
Diesel Engine ◽  
Soot Formation ◽  
Direct Injection ◽  
Numerical Results ◽  
Nox Formation ◽  
Temperature Oxidation ◽  
Pollutant Formation ◽  
Direct Injection Diesel Engine ◽  
Combustion Processes

The Representative Interactive Flamelet (RIF) concept has been applied to numerically simulate the combustion processes and pollutant formation in the direct injection diesel engine. Due to the ability for interactively describing the transient behaviors of local flame structures with CFD solver, the RIF concept has the capabilities to predict the auto-ignition and subsequent flame propagation in the diesel engine combustion chamber as well as to effectively account for the detailed mechanisms of soot formation, NOx formation including thermal NO path, prompt and nitrous NOx formation, and reburning process. Special emphasis is given to the turbulent combustion model which properly accounts for vaporization effects on the mixture fraction fluctuations and the pdf model. The results of numerical modeling using the RIF concept are compared with experimental data and with numerical results of the commonly applied procedure which the low-temperature and high-temperature oxidation processes are represented by the Shell ignition model and the eddy dissipation model, respectively. Numerical results indicate that the RIF approach including the vaporization effect on turbulent spray combustion process successfully predicts the ignition delay time and location as well as the pollutant formation.

scholarly journals Experimental study of multiple pilot injection strategy in an automotive direct injection diesel engine

2018 ◽  
Vol 234 ◽  
pp. 03007
Author(s):  
Plamen Punov ◽  
Tsvetomir Gechev ◽  
Svetoslav Mihalkov ◽  
Pierre Podevin ◽  
Dalibor Barta
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Diesel Engines ◽  
Direct Injection ◽  
Combustion Process ◽  
Injection Timing ◽  
Pilot Injection ◽  
Injection Strategy ◽  
Direct Injection Diesel Engine ◽  
Rate Of Heat Release

The pilot injection strategy is a widely used approach for reducing the noise of the combustion process in direct injection diesel engines. In the last generation of automotive diesel engines up to several pilot injections could occur to better control the rate of heat release (ROHR) in the cylinder as well as the pollutant formation. However, determination of the timing and duration for each pilot injection needs to be precisely optimised. In this paper an experimental study of the pilot injection strategy was conducted on a direct injection diesel engine. Single and double pilot injection strategy was studied. The engine rated power is 100 kW at 4000 rpm while the rated torque is 320 Nm at 2000 rpm. An engine operating point determined by the rotation speed of 1400 rpm and torque of 100 Nm was chosen. The pilot and pre-injection timing was widely varied in order to study the influence on the combustion process as well as on the fuel consumption.

Experimental Study of Direct Injection Diesel Engine Fueled with Two Types of Gas To Liquid (GTL)

2002 ◽  
Author(s):  
Mitsuharu Oguma ◽  
Shinichi Goto ◽  
Mitsuru Konno ◽  
Kouseki Sugiyama ◽  
Makihiko Mori
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Direct Injection ◽  
Direct Injection Diesel Engine ◽  
Gas To Liquid
Sign in / Sign up

Export Citation Format

Share Document