scholarly journals Comparative investigation of the effect of hemispherical and toroidal piston bowl geometries on diesel engine combustion characteristics

2018 ◽  
Vol 5 (3) ◽  
pp. 854-862 ◽  
Author(s):  
Manjunath Channappagoudra ◽  
K. Ramesh ◽  
G. Manavendra
Keyword(s):  
Diesel Engine ◽  
Comparative Investigation ◽  
Combustion Characteristics ◽  
Piston Bowl ◽  
Engine Combustion

scholarly journals Influence of Chemical Composite Additive on Combustion and Emission Characteristics of a Diesel Engine using Waste Plastic Oil as Fuel and Modified Piston Bowl

2018 ◽  
Vol 34 (6) ◽  
pp. 2806-2813
Author(s):  
Pappula Bridjesh ◽  
Pitchaipillai Periyasamy ◽  
Narayanan Kannaiyan Geetha
Keyword(s):  
Experimental Investigation ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Emission Characteristics ◽  
Soy Lecithin ◽  
Physiochemical Properties ◽  
Waste Plastic ◽  
Piston Bowl ◽  
Waste Plastic Oil ◽  
Engine Combustion

This experimental investigation is an endeavour to substitute diesel with WPO as fuel on a diesel engine. Enhancing the physiochemical properties of WPO or with hardware modifications on the engine, the performance of engine could not be improved up to the mark. The physiochemical properties of WPO are enhanced by the use of composite additive, which is a mixture of soy lecithin and 2-ethylhexyl nitrate and to improve the in-cylinder air motion; subsequently to increase the swirl and turbulence, standard hemispherical combustion chamber is modified to toroidal spherical grooves combustion chamber. The results of combined effect of modifying the combustion chamber and addition of composite additive suggest that improvements in engine-out emissions can be obtained from current diesel engines by enhancing physiochemical properties of fuel and matching geometry of combustion chamber. Engine combustion and emission characteristics under various loads for various fuels under test are as well studied.

Effects of an In-Cylinder Active Thermo-Atmosphere Environment on Diesel Engine Combustion Characteristics and Emissions

2008 ◽  
Vol 22 (5) ◽  
pp. 2991-2996 ◽  
Author(s):  
Xingcai Lu ◽  
Libin Ji ◽  
Junjun Ma ◽  
Chen Huang ◽  
Zhen Huang
Keyword(s):  
Diesel Engine ◽  
Combustion Characteristics ◽  
Engine Combustion ◽  
Atmosphere Environment

scholarly journals Cyclic Pressure Variations in A Small Diesel Engine Fueled with Biodiesel and Antioxidant Blends

2020 ◽  
Vol 17 (2) ◽  
pp. 7851-7857
Author(s):  
M.H. Ali ◽  
A. Abdullah ◽  
M.H. Mat Yasin ◽  
M.K. Kamarulzaman
Keyword(s):  
Diesel Engine ◽  
Engine Speed ◽  
Load Condition ◽  
Combustion Characteristics ◽  
Dual Fuel ◽  
Biodiesel Fuel ◽  
Cylinder Pressure ◽  
Indicated Mean Effective Pressure ◽  
Engine Combustion ◽  
Cyclic Variations

Biodiesel fuel is considered as one of the most competence sustainable replacement for fossil fuel due to their superior combustion characteristics and possesses higher oxygen content. Thus, many researchers recently investigated to improve biodiesel capability by adding additives whether by blending with dual-fuel or tri-fuel. However, the combustion characteristics for biodiesel and biodiesel-additives blends are not thoroughly examined and need additional research works to study how the biodiesel behaviour and characterise. Thus, this research main objective is to study a single-cylinder diesel engine cyclic cylinder pressure variations running with biodiesel with antioxidant (B2HA1.0 and B2HT 1.0) blends with palm oil methyl ester (POME). While The baseline fuels used for this study were biodiesel (B20) and pure diesel (B0). The entire test fuels were examined at a constant engine speed 1800 rpm with 100% engine load condition. The engine combustion characteristics were studied by utilising the indicated mean effective pressure (IMEP) and cyclic variations of combustion pressure at 200 consecutive cycles. Combustion characteristics of engine diesel have been studied by using statistical analysis. The results revealed that the engine running with biodiesel-antioxidants have higher cyclic variations of combustion from B20 and B0, which B2HA1.0 possessed the highest cyclic variations. It can be summarised from the study that biodiesel-antioxidants fuels produce a substantial influence on the engine cyclical variation, which linked to the characteristics of the engine combustion.

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