On the optimization of the air-LPG mixing system of a Diesel bus engine converted to gas

Jemni, Mohamed Ali; Kantchev, Gueorgui; Abid, Mohamed Salah

doi:10.1109/revet.2012.6195308

Cited by 1 publication

(3 citation statements)

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“…For this current design of manifold were considered to study the flow and mixture behavior. The design an optimal intake manifold, following parameters were be taken into consideration [2]. 1-Uniform distribution of mixture to all cylinders.…”

Section: Intake Manifolds Considerationsmentioning

confidence: 99%

“…This dimensionless number can be defined as: The geometry of the air manifold with total length (2m) and diameter (0.0635m) for duct intake manifold diameter (0.0365m), the experimental work was carried out in the thermodynamics laboratory of mechanical engineering department in the college of engineering, university of Basrah. The laboratory consists of test banks involving (Prodit GR0306/000/013 -variable compression engine "VARICOMP" dual diesel-petrol cycles) engine, (INFRAGAS -209) type exhaust gas analyzer for measuring, and support equipment such as Personal Computer (PC) for displaying and saving data as shown in figure (2).…”

Section: The Physical Model and Parameters Definitions Enginesmentioning

confidence: 99%

“…An uneven air distribution leads to less volumetric efficiency, power loss and increase of fuel consumption [1]. Increasingly stringent legislation aimed at reducing pollutant emissions from vehicles has intensified efforts to gain better understanding of the various processes involved in internal combustion (IC) engines [2]. This mixture circulates to the intake port through a very complicated path including the air cleaner, intake pipe, and intake manifold.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical and Experimental Study of the Intake Manifold Effect on the SI Engine Performance

A. Rishack,

F. Dakhil,

K. Obaid

2014

BJES

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This work uses different shapes of intake manifold for study the effect on a single cylinder four stroke gasoline engine. A numerical simulation of the flow achieved through five intake manifold designs, using 3D Computational Fluid Dynamic (CFD) software package FLUINT (6.3.). Accordingly, the three-dimensional resolution of Navier-Stokes equations in conjunction with the standard k-ε turbulence model is undertaken to provide knowledge of the air movement nature and examining the intake manifold optimal geometry. Five cases of intake manifold are examined experimentally in order to produce a comprehensive and realistic data set. These data are in the form of engine performance, exhaust gas products and relative AFR for each case separately under different engine speeds. Exhaust gas analyzer type (Infragas-209) is used in the present work to measure exhaust gas concentrations and relative air/fuel ratio ( ). The results were obtained in this investigation showed that a Simulate numerically and experimentally is capable to select the optimized intake system geometry with reliability. Velocity is highest near the outer wall at increased the curvature ratio and pressure is highest near the inner wall at increased the curvature ratio. The secondary flow increases when the engine speeds and curvature ratio increase because of increasing the pressure difference between the inner wall and the outer wall. The effect of these parameters explained on the swirl air movement and tumble inside the cylinder are increasing by increase the engine speed and γ respectively. The increasing in the engine speed and the optimum selection of the manifold which designed enhanced the mixing of the fuel with air. The results showed that the optimized manifold 135º- NE (case 5) due to enhance AFR, fuel consumption and exhaust emissions are improved.

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Section: Intake Manifolds Considerationsmentioning

confidence: 99%

Section: The Physical Model and Parameters Definitions Enginesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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