Some More Notes on the Amount of Diffusion Burning Causing Smoke Formation

1985 ◽  
Author(s):  
Bogdan Veselinović
Keyword(s):  
Diffusion Burning

Diffusion burning of a liquid-fuel drop in a two-oxidizer mixture

1970 ◽  
Vol 6 (2) ◽  
pp. 218-220 ◽  
Author(s):  
M. A. Gurevich ◽  
A. M. Stepanov
Keyword(s):  
Liquid Fuel ◽  
Diffusion Burning

On the Premixed Combustion in a Direct-Injection Diesel Engine

1987 ◽  
Vol 109 (2) ◽  
pp. 187-192 ◽  
Author(s):  
A. C. Alkidas
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Engine Speed ◽  
Direct Injection ◽  
Premixed Combustion ◽  
Injection Timing ◽  
Oxides Of Nitrogen ◽  
Nitrogen Emissions ◽  
Direct Injection Diesel Engine ◽  
Diffusion Burning

The factors influencing premixed burning and the importance of premixed burning on the exhaust emissions from a small high-speed direct-injection diesel engine were investigated. The characteristics of premixed and diffusion burning were examined using a single-zone heat-release analysis. The mass of fuel burned in premixed combustion was found to be linearly related to the product of engine speed and ignition-delay time and to be essentially independent of the total amount of fuel injected. Accordingly, the premixed-burned fraction increased with increasing engine speed, with decreasing fuel-air ratio and with retarding injection timing. The hydrocarbon emissions did not correlate well with the premixed-burned fraction. In contrast, the oxides of nitrogen emissions were found to increase with decreasing premixed-burned fraction, indicating that diffusion burning, and not premixed burning, is the primary source of oxides of nitrogen emissions.

Features of the near-limit diffusion burning of PMMA

1985 ◽  
Vol 21 (3) ◽  
pp. 285-287
Author(s):  
V. I. Eremin ◽  
V. M. Nikolaev
Keyword(s):  
Diffusion Burning ◽  
Limit Diffusion

Experimental study of the length and structure of a free-diffusion burning-gases flame

2009 ◽  
Vol 82 (2) ◽  
pp. 296-302
Author(s):  
Yu. V. Polezhaev ◽  
V. A. Vorob’ev ◽  
D. V. Isakov ◽  
G. K. Korovin ◽  
I. G. Lozino-Lazinskaya ◽  
...  
Keyword(s):  
Experimental Study ◽  
Free Diffusion ◽  
Diffusion Burning

scholarly journals Experimental study on the diffusion burning and radiative heat delivery of two adjacent heptane pool fires

2022 ◽  
Vol 171 ◽  
pp. 107246
Author(s):  
Kun Zhao ◽  
Zhirong Wang ◽  
Shichang Ma ◽  
Xiaoyu Ju ◽  
Pinkun Guo ◽  
...  
Keyword(s):  
Experimental Study ◽  
Radiative Heat ◽  
Pool Fires ◽  
Diffusion Burning

CFD Numerical Simulation on Swirl-Flow Combustion in Freon Decomposition Burner

2012 ◽  
Vol 195-196 ◽  
pp. 791-794
Author(s):  
Hong Gao ◽  
Ping Ning ◽  
Di Zhang ◽  
Tian Cheng Liu ◽  
Shi Bo Wang
Keyword(s):  
Vortex Flow ◽  
Reaction Model ◽  
Swirl Flow ◽  
Cfd Model ◽  
High Temperature Region ◽  
Dissipation Model ◽  
Diffusion Burning ◽  
Computational Fluid Dynamics Cfd ◽  
Chemical Reaction Model ◽  
Strong Vortex

The Computational Fluid Dynamics (CFD) model of the freon decomposition burner with bicyclo-inlet is established by using Eddy-Dissipation Model (EDM) chemical reaction model. The jet-flow turbulent diffusion burning and swirl-flow combustion are simulated to prove that the swirl-flow combustion can get shorter blaze. The strong vortex flow enlarges the high temperature region in the burner and the temperature is more uniform, which is conducive to the freon decomposition at a great heat.

Formation and Combustion of Carbon in a Diesel Engine

1969 ◽  
Vol 184 (10) ◽  
pp. 36-43 ◽  
Author(s):  
I. M. Khan
Keyword(s):  
Diesel Engine ◽  
Air Temperature ◽  
Diesel Fuel ◽  
Direct Injection ◽  
Injection Period ◽  
Engine Cylinder ◽  
Wide Range ◽  
Injection Type ◽  
Valve Opening ◽  
Diffusion Burning

The effects of the shape of the injection diagram, injection period, and injection nozzle on diesel engine smoke have been studied for a wide range of injection timings and engine speeds on a 1-litre direct-injection type engine cylinder. Cycle temperatures were also varied by raising inlet air temperature and by introducing water mixed with diesel fuel. An analysis of these results shows that the exhaust smoke level is mainly determined by the concentration of soot at the end of heat release (net soot release), i.e. any subsequent combustion of the net soot release before exhaust valve opening is unimportant. The net soot release in a diesel engine cylinder, for a given fuel, is controlled by the amount and rate of diffusion burning and the flame temperatures.

Sign in / Sign up

Export Citation Format

Share Document