The Effect of Titanium Oxide Content in Piston Coating on the Performance and Emission Characteristics of Bio-Diesel Fuelled C.I. Engine

2013 ◽  
Vol 795 ◽  
pp. 24-28 ◽  
Author(s):  
C.R. Rajashekhar ◽  
C. Umashankar ◽  
T.K. Chandrashekar ◽  
P. Naveen
Keyword(s):  
Titanium Oxide ◽  
Cooling System ◽  
Thermal Barrier ◽  
Emission Characteristics ◽  
Oxide Content ◽  
Weight Percentage ◽  
Performance And Emission ◽  
Piston Crown ◽  
Barrier Coating ◽  
Hc Emissions

Thermal barrier coating has proven to be effective in improving the thermal efficiency and initiation of an effective cooling system of the engine. In the present work the engine piston crown was plasma coated with 150μm thicknss of catalytic ceramic material Alumina-Titanium oxide (Al2O3-TiO2) over a 60μm thickness of NiCrAl bond coat. Available literature on this topic suggest that the particular effect of TiO2 on the over all thermal barrier characteristics have not been established clearly. It was therefore felt that the effect of weight percentage of TiO2 in the Al2O3-TiO2, might influence the performance and emission characteristics of the engine. The TiO2 weight % has been tested at 10% and 15% levels. The engine used was four strokes, single cylinder direct injected diesel engine. The engine was tested with diesel & at 30% Honge bio-diesel with diesel and the results obtained clearly indicate that the specific fuel consumption, CO & HC emissions have come down by increasing the weight % of TiO2.

scholarly journals Effect of Thermal Barrier Coating on the Performance and Emissions of Diesel Engine Operated with Conventional Diesel and Palm Oil Biodiesel

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 692
Author(s):  
Navin Ramasamy ◽  
Mohammad Abul Kalam ◽  
Mahendra Varman ◽  
Yew Heng Teoh
Keyword(s):  
Thermal Barrier Coating ◽  
Palm Oil ◽  
Silicon Oxide ◽  
Engine Performance ◽  
Spray Coating ◽  
Thermal Barrier ◽  
Performance And Emission ◽  
Barrier Coating ◽  
Carbon Dioxide Co2 ◽  
Palm Oil Biodiesel

In this study, the performance and emission of a thermal barrier coating (TBC) engine which applied palm oil biodiesel and diesel as a fuel were evaluated. TBC was prepared by using a series of mixture consisting different blend ratio of yttria stabilized zirconia (Y2O3·ZrO2) and aluminum oxide-silicon oxide (Al2O3·SiO2) via plasma spray coating technique. The experimental results showed that mixture of TBC with 60% Y2O3·ZrO2 + 40% Al2O3·SiO2 had an excellent nitrogen oxide (NO), carbon monoxide (CO), carbon dioxide (CO2), and unburned hydrocarbon (HC) reductions compared to other blend-coated pistons. The finding also indicated that coating mixture 50% Y2O3·ZrO2 + 50% Al2O3·SiO2 had the highest brake thermal efficiency (BTE) and lowest of brake specific fuel consumption (BSFC) compared to all mixture coating. Reductions of HC and CO emissions were also recorded for 60% Y2O3·ZrO2 + 40% Al2O3·SiO2 and 50% Y2O3·ZrO2 + 50% Al2O3·SiO2 coatings. These encouraging findings had further proven the significance of TBC in enhancing the engine performance and emission reductions operated with different types of fuel.

scholarly journals Control of Exhaust Emissions Using Piston Coating on Two-StrokeSI Engines with Gasoline Blends

2021 ◽  
Vol 8 (1) ◽  
pp. H16-H20
Author(s):  
A.V.N.S. Kiran ◽  
B. Ramanjaneyulu ◽  
M. Lokanath M. ◽  
S. Nagendra ◽  
G.E. Balachander
Keyword(s):  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Fossil Fuels ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Specific Fuel Consumption ◽  
Thermal Barrier ◽  
Piston Crown ◽  
Barrier Coating

An increase in fuel utilization to internal combustion engines, variation in gasoline price, reduction of the fossil fuels and natural resources, needs less carbon content in fuel to find an alternative fuel. This paper presents a comparative study of various gasoline blends in a single-cylinder two-stroke SI engine. The present experimental investigation with gasoline blends of butanol and propanol and magnesium partially stabilized zirconium (Mg-PSZ) as thermal barrier coating on piston crown of 100 µm. The samples of gasoline blends were blended with petrol in 1:4 ratios: 20 % of butanol and 80 % of gasoline; 20 % of propanol and 80 % of gasoline. In this work, the following engine characteristics of brake thermal efficiency (BTH), specific fuel consumption (SFC), HC, and CO emissions were measured for both coated and non-coated pistons. Experiments have shown that the thermal efficiency is increased by 2.2 % at P20. The specific fuel consumption is minimized by 2.2 % at P20. Exhaust emissions are minimized by 2.0 % of HC and 2.4 % of CO at B20. The results strongly indicate that the combination of thermal barrier coatings and gasoline blends can improve engine performance and reduce exhaust emissions.

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