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Vasudevan, D.
- Experimental Study on Performance and Exhaust Emission Characteristics of a C.I. Engine Fuelled with Tri Compound Oxygenated Diesel Fuel Blends
Authors
1 Department of Mechanical Engineering, University College of Engineering, BIT Campus, Tiruchirappalli, IN
2 PSNA College of Engineering and Technology, Dindigul, IN
Source
Indian Journal of Science and Technology, Vol 8, No 1 (2015), Pagination: 96-102Abstract
Transport vehicles greatly pollute the environment through emissions such as CO, CO2, NOX, SOX, unburnt or partially burnt HC and particulate emissions. Fossil fuels are the chief contributors to urban air pollution and major source of Green House Gases (GHGs) and considered to be the prime cause behind the global climate change. Though diesel fuelled compression ignition engine can operate at high thermal efficiency creates more emission of HC and CO, the high level of NOX poses problems. The high combustion temperature and lean mixtures used are the reasons. This paper presents the results of performance and emission analyses carried out in an unmodified diesel engine fuelled with Tamanu Methyl Ester (TME), DiEthyl Ether (DEE) its blends with diesel. Engine tests have been conducted to get the comparative measures of Brake Specific Fuel Consumption (BSFC), Brake Thermal Efficiency (BTE) and emissions such as HC, CO, NOX and Exhaust gas temperature to evaluate the behaviour of TME, DEE and diesel in varying proportions. The results reveal that blends of TME, DEE with diesel up to 20% and 20% by volume provide better engine performance (BSFC and BTE) increased up to 3-4% and the exhaust emission gets decreased dramatically.Keywords
C.I. Engine, Diethyl Ether, Exhaust Emission, Performance.- Experimental Study on Performance and Exhaust Emission Characteristics of a C.I. Engine Fuelled with Tri Compound Oxygenated Diesel Fuel Blends
Authors
1 Department of Mechanical Engineering, University College of Engineering, BIT Campus, Tiruchirappalli, IN
2 Department of Mechanical Engineering, PSNA College of Engineering & Technology, Dindigul, IN
Source
Indian Journal of Science and Technology, Vol 8, No 4 (2015), Pagination: 307-313Abstract
Transport vehicles greatly pollute the environment through emissions such as CO, CO2, NOX, SOX, unburnt or partially burnt HC and particulate emissions. Fossil fuels are the chief contributors to urban air pollution and major source of Greenhouse Gases (GHGs) andconsidered to be the prime cause behind the global climate change. Though diesel fuelled compression ignition engine can operate at high thermal efficiency creates more emission of HC and CO, the high level of NOX poses problems. The high combustion temperature and lean mixtures used are the reasons. This paper presents the results of performance and emission analyses carried out in an unmodified diesel engine fuelled with Tamanu Methyl Ester (TME), Diethyl Ether (DEE) its blends with diesel. Engine tests have been conducted toget the comparative measures of Brake Specific Fuel Consumption (BSFC), Brake ThermalEfficiency (BTE) and emissions such as HC, CO, NOX and Exhaust gas temperature toevaluate the behaviour of TME, DEE and diesel in varying proportions. The results reveal that blends of TME, DEE with diesel up to 20% and 20% by volume provide better engine performance (BSFC and BTE) increased up to 3-4% and the exhaust emission gets decreased dramatically.Keywords
C.I. Engine, Diethyl Ether, Exhaust Emission, Performance, TME.- A Note on the Occurrence of Carbonatite in the Nellur Schist Belt, Near Vinjamur, Udayagiri Taluk, A.P.
Authors
1 Geological Survey of India, Hyderabad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 18, No 9 (1977), Pagination: 515-518Abstract
About 80 km north-north-west of Nellore, in the northern portion of the Nellore schist belt (referable to the Dharwar and older metamorphics) linear bands of rock of considerable strike length made up of Calcite, dolomite, siderite, with concentrations of baryte and phlogopite, Occur as conformable sheets within a cogenetic volcanic sequence of intermediate to acid rocks. The volcanic sequence into which the carbonatites are emplaced is part of a group of rocks, locally called the Udayagiri group.
The Carbonatites occurring here can be classified essentially into two groups: (1) Fine grained siderite-rich rock exhibiting flow banding, vugs and other features suggestive of flow. This variety is rich in baryte and euhedral phlogopite plates; (2) Sheets of carbonate rich rock emplaced in conformity with the litho-layering trends of the enclosing meta-volcanics. These are medium to coarse grained, deep brownish rocks made up of siderite, clacite, dolomite, baryte and soda-amphibole, with magnetite and apatite in lesser amounts. Also found are micro-layers of a green mineral which has a characteristic fluorescence, and is strongly suspected to be a cerium-lanthanum rare earth mineral. The first type is seen about 1 km ssw of Bandakindipalli (14°52'30": 79°44') while the second is near Kodandarama baryte mine at 4.5 km wsw of Vinjamur (14°50': 79°35').
- An Early Precambrian Volcanogenic Banded Barytes Deposit near Vinjamur, Nellore District, Andhra Pradesh, India
Authors
1 86, II Cross, III Phase, J. P. Nagar Bangalore 560078, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 33, No 5 (1989), Pagination: 444-446Abstract
A unique 3 b.y. old banded barytic rock formation has been described in intimate association with meta-rhyolitic tuff. The barytic rock is made up of barytes, magnetite, quartz, garnet, tourmaline, epidote, psilomelane and occasionally tremolire and calcite. It is stratiform, being conformable in disposition to the meta-rhyolitic rock with which it is co-folded.Associated with the stratiform barytes deposits are hematite-quartz bands (tetsukeii in Japanese literature), the presence of which within a volcano-sedimentary sequence marks a horizon of fossil hydrothermal activity and is indicative of the presence of sulphides lower in the stratigraphic column.
- Tensile Behaviour of Thermal Cycled Titanium (Ti-6Al-4V) Alloy
Authors
1 Department of Mechanical Engineering, Annamalai University, Annamalai Nagar-608002, Tamilnadu, IN
2 Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar-608002, Tamilnadu, IN
3 Department of Mechanical Engineering, E.G.S Pillay Engineering College, Nagapattinam-611002, Tamilnadu, IN
Source
Artificial Intelligent Systems and Machine Learning, Vol 3, No 8 (2011), Pagination: 538-542Abstract
Titanium is recognized for its strategic importance as a unique lightweight, high strength alloyed structurally efficient metal for critical, high-performance aircraft, such as jet engine and airframe components. Titanium is called as the "space age metal" and is recognized for its high strength-to-weight ratio. Today, titanium alloys are common, readily available engineered metals that compete directly with stainless and Specialty steels, copper alloys, nickel based alloys and composites. Titanium alloys are needed to be heat treated in order to reduce residual stress developed during fabrication and to increase the strength. Titanium (Ti-6Al-4V) alloy is an alpha beta alloy which is subjected to annealing and solution treatment to attain beta phase. This beta phase is maintained by quenching and subsequent aging to increase strength. Thermal cycling process was carried out for heat treated Ti-6Al-4V specimens. Forced air used for cooling. This paper reports on the investigation of tensile behaviour of different Heat treated and thermal cycled Titanium (Ti-6Al-4V) alloy and the micro structural changes.Keywords
Thermal Cycling, Heat Treatment, Solutionizing, Aging, Tensile Strength.- Development of Non-Polluted Vehicle Using Aqua Silencer
Authors
1 Mechanical Engineering, K.S. Rangasamy College of Technology,Tiruchengode-637 215, IN
2 Mechanical Engineering, Annamalai University, Annamalainagar, Tamilnadu, IN