A simulation study on influence the structure of the combustion chamber on the performance and emission characteristics of RT 125DI diesel engine

2020 ◽  
Author(s):  
Van Vang Le
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Simulation Study ◽  
Emission Characteristics ◽  
Performance And Emission

Effect of Combustion Chamber Geometry on Performance and Emission Characteristics of a Diesel Engine Fueled with Mahua Biodiesel Blends

2014 ◽  
Vol 984-985 ◽  
pp. 900-906
Author(s):  
L. Saravanakumar ◽  
B.R. Ramesh Bapu ◽  
B. Durga Prasad
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Emission Characteristics ◽  
Oxides Of Nitrogen ◽  
Plant Oil ◽  
Brake Thermal Efficiency ◽  
Performance And Emission ◽  
Standard Configuration ◽  
Mahua Biodiesel ◽  
High Fatty Acids

The present work investigates the effect of change in combustion chamber geometry on performance and emission characteristics of single cylinder diesel engine fuelled with mahua biodiesel. Since plant oil derived from the mahua tree has high fatty acids, it undergoes esterification followed by transesterification process to reduce its viscosity. Experiments were conducted using a blend of 20% biodiesel (B20) 40% biodiesel (B40) with diesel and compared with diesel by using two types of combustion chamber geometry, explicitly hemispherical and modified hemispherical combustion chamber. Performance parameters such as Brake Thermal Efficiency (BTE), Brake Specific Fuel Consumption (BSFC) and emission parameters like Unburned Hydro Carbon (UBHC), Oxides of Nitrogen (NOx) were studied from the diesel engine with above mentioned configurations. It is obvious that there is considerable improvement in the performance parameter viz, BTE, BSFC and reduction in UBHC emissions by using the modified geometry piston. However, the NOx emission was found to be higher than that of standard configuration. The results obtained from the blend B20 at modified combustion chamber geometry are on par with diesel and hence mahua biodiesel can be suggested as an alternative fuel for Compression Ignition (C.I) engine with modified combustion chamber geometry.

Effect of Combustion Chamber Design on the Performance and Emission Characteristics of a Direct Injection (DI) Diesel Engine Fuelled With Refined Rice Bran Oil Blends

2004 ◽  
Author(s):  
A. Samuel Raja ◽  
G. Lakshmi Narayana Rao ◽  
N. Nallusamy ◽  
M. Selva Ganesh Kumar
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Direct Injection ◽  
Spherical Shape ◽  
Experimental Investigations ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Piston Bowl

The present work deals with the experimental investigations on the effect of refined rice bran oil and its blends with diesel on performance and emission characteristics of diesel engine with different combustion chamber geometry. The engine was tested with various neat vegetable oils and it was found that with refined rice bran oil the performance and emission characteristics were comparable with that of neat diesel. The K- factor of the combustion chamber geometry (ratio of the piston bowl volume to the clearance volume) was maintained at 0.74. The D/d ratio (ratio of piston crown diameter to piston bowl diameter) was altered to achieve re-entrant and torroidal shapes from spherical shape. Tests were carried out for each blend, with particular geometry of combustion chamber. Results with different combustion chamber geometry and different blends have been compared.

STUDIES ON EFFECTS OF COMBUSTION CHAMBER GEOMETRY AND INJECTION PRESSURE ON BIODIESEL COMBUSTION

2012 ◽  
Vol 36 (4) ◽  
pp. 429-438 ◽  
Author(s):  
Chandrashekharapua Ramachandraiah Rajashekhar ◽  
Tumkur Krishnamurthy Chandrashekar ◽  
Chebbiyyan Umashankar ◽  
Rajagopal Harish Kumar
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Experimental Studies ◽  
Injection Pressure ◽  
High Viscosity ◽  
Combustible Mixture ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Engine Combustion ◽  
Performance And Emissions

Combustion of biodiesels has inherent problems due to their high viscosity and low volatility. This paper relates the modification of engine combustion chamber design, for inducing turbulence to improve the combustibility of combustible mixture. A survey of literature shows that experimental studies have not been done on a tri-chambered piston for evaluating influence on the performance and emission characteristics using diesel blends as well. The objective of this work is to study the effect of combustion chamber geometry and injection pressure on performance and emissions of a biodiesel (Jatropha) fuelled multi-chambered piston diesel engine. The performance and emission characteristics were studied and it has been noticed that for the engine under consideration 200 bar injection pressure gives optimum performance.

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