scholarly journals Full Cycle Cold Flow Analysis of the Effect of Twin Swirl Combustion Chamber Design in a Diesel Engine

2016 ◽  
Vol 06 (04) ◽  
pp. 109-117
Author(s):  
Doğan Güneş ◽  
Mehmet Serkan Horasan
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Flow Analysis ◽  
Cold Flow ◽  
Chamber Design ◽  
Swirl Combustion

Research on Parametric Design Method of Combustion Chamber on Diesel Engine

2011 ◽  
Vol 383-390 ◽  
pp. 1431-1440
Author(s):  
Yong Shang ◽  
Fu Shui Liu ◽  
Xiang Rong Li ◽  
Jing Wu
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Calculation Result ◽  
Parametric Design ◽  
Design Method ◽  
Geometrical Parameters ◽  
Combustion Chambers ◽  
Heat Efficiency ◽  
Swirl Combustion ◽  
Combustion Duration

One method of parametric design on combustion chamber is used in this paper. Several independent geometrical parameters of ω type and double swirl combustion chamber are brought forward. Different series of ω type and double swirl combustion chambers have been designed by using this method. The effect of the independent geometrical parameters on the performance of diesel engine has been studied by using CFD code AVL FIRE. According to this method of parametric design and calculation result, two pistons with ω type and double swirl combustion chamber has been designed with the target of the highest indicated heat efficiency. The test result shows that, contrasting with ω type chamber, BSFC and main combustion duration of double swirl combustion chamber is lower by 7.5 and 6.9 percent respectively, while indicated heat efficiency is 7.1 percent higher. And the calculation result has coherence with the experiment. It is proved that the method of parametric design on combustion chamber can satisfy the requirement of designing. At the same time, this method can be extended to design other combustion chambers.

IN-CYLINDER FLOW ANALYSIS FOR A DIRECT INJECTION DIESEL ENGINE – A CFD APPROACH

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Ananthakumar S ◽  
Jayabal S ◽  
Thirumal P
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Direct Injection ◽  
Flow Analysis ◽  
Direct Injection Diesel Engine ◽  
Piston Bowl ◽  
Mexican Hat ◽  
Swirl Velocity

A parametric study of the effect of piston bowl configuration on air motion of a direct injection diesel engine motored at 3000 rpm is investigated. Two piston bowl configurations (Mexican-hat and Re-entrant) are modeled for the computational flow analysis. The flow characteristics of these engine bowls are examined under transient conditions using STAR CD, a commercial computational fluid dynamics package. The predicted computational fluid dynamics results of mean swirl velocity of the engine at different locations inside the combustion chamber, at the end of compression stroke were compared with experimental results available in the literature. The results obtained showed very good agreement with the measured data given in the literature. This paper discusses the predicted flow structure inside the combustion chamber at top dead center, with different piston bowl shapes at 3000 rpm. It also compares the radial distribution of mean swirl velocity component in the piston bowl for the two cases. It is observed that the Re-entrant bowl provides a higher swirl ratio at almost all locations than the Mexican hat bowl.

Research and development of an advanced combustion system for the direct injection diesel engine

2005 ◽  
Vol 219 (2) ◽  
pp. 241-252 ◽  
Author(s):  
W H Su ◽  
T J Lin ◽  
H Zhao ◽  
Y Q Pei
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Direct Injection ◽  
Combustion System ◽  
Multiple Injections ◽  
Hcci Combustion ◽  
Advanced Combustion ◽  
Chamber Design ◽  
Low Load ◽  
Di Diesel Engine

In order to obtain a simultaneous reduction in both NOx and particulate emissions from a direct injection (DI) diesel engine, an advanced combustion system has been researched and developed in the authors' laboratory. The new combustion system comprises homogeneous charge compression ignition (HCCI) combustion at low load by early and multiple injections, combined HCCI, and lean diffusion burning at medium and higher load conditions by means of a novel combustion chamber design and multiple injections. In this paper, the research and development of the enhanced mixing by means of a raised round object (referred to in this paper as BUMP) and its application to a diesel combustion chamber design is described. Then the experimental results from a DI diesel engine equipped with a multiple injection common rail (CR) fuel injection system and the new combustion chamber design will be presented and discussed. Engine testing has shown that the BUMP combustion chamber was very effective in reducing both NOx and smoke emissions. HCCI combustion by means of multiple injections leads to extremely low NOx emissions under low load operations. At medium and higher load operation conditions, quasi HCCI combustion combined with the BUMP combustion chamber could signficantly reduce NOx emissions without sacrificing particulate emission and fuel consumption.

Combustion Chamber Design Effects on D.I. Common Rail Diesel Engine Performance

2001 ◽  
Author(s):  
C. Beatrice ◽  
P. Belardini ◽  
C. Bertoli ◽  
N. Del Giacomo ◽  
Mna. Migliaccio
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Engine Performance ◽  
Common Rail ◽  
Design Effects ◽  
Chamber Design

scholarly journals Effect of Combustion Chamber Design on a DI Diesel Engine Fuelled with Jatropha Methyl Esters Blends with Diesel

2013 ◽  
Vol 64 ◽  
pp. 479-490 ◽  
Author(s):  
Venkata Ramesh Mamilla ◽  
M.V. Mallikarjun ◽  
G. Lakshmi Narayana Rao
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Methyl Esters ◽  
Chamber Design ◽  
Di Diesel Engine
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