scholarly journals Effects of the NiFe2O4 nanoadditive on the performance and emission characteristics of diesel engines: ultrasonic green synthesis by T3 hormone

RSC Advances ◽  
2021 ◽  
Vol 11 (44) ◽  
pp. 27701-27713
Author(s):  
Samira Mandizadeh ◽  
Omid Amiri ◽  
Masoud Salavati-Niasari
Keyword(s):  
Green Synthesis ◽  
Diesel Engines ◽  
Ultrasonic Method ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Synthesis Of Nanostructures

In the present study, nanocrystals are synthesized by the ultrasonic method in different morphologies with T3 hormone as a template. Different parameters are investigated for the synthesis of nanostructures.

Vegetable Oils as Fuel for Diesel Engines: An Overview

2002 ◽  
Author(s):  
A. K. Babu ◽  
G. Devaradjane
Keyword(s):  
Diesel Engine ◽  
Vegetable Oils ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Emission Characteristics ◽  
Combustion Chambers ◽  
Engine Operation ◽  
Performance And Emission ◽  
Diesel Fuels ◽  
Conventional Diesel Fuel

The intent of this paper is to summarize the state of knowledge on use of vegetable oils as diesel fuels. Fuel related properties are reviewed and compared with conventional diesel fuel. The use of neat vegetable oil (edible and/or nonedible), biodiesel and its blends in a diesel engine has been discussed. Performance and emission characteristics are highlighted. Suitability of different combustion chambers for diesel engine operation with vegetable oils is outlined. Techniques to decrease viscosities are discussed. An overview on current developments on the use of vegetable oils directly and indirectly in diesel engines is presented.

scholarly journals Production, Quantitative Analysis of Fatty Acids, Engine Performance and Emission Characteristics of Biodiesel Fuel Derived from Virgin Coconut Oil

2020 ◽  
Vol 5 (7) ◽  
pp. 1397-1404
Author(s):  
Alex Y ◽  
Roji George Roy
Keyword(s):  
Diesel Engine ◽  
Physicochemical Properties ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Engine Performance ◽  
Coconut Oil ◽  
Biodiesel Fuel ◽  
Emission Characteristics ◽  
Virgin Coconut Oil ◽  
Performance And Emission

Biodiesel has become more attractive recently, because of its environmental benefits and the fact that it is made from renewable resources. Over the past few decades, most of the countries depending on diesel engines for transportation. Some of its valuable advantages like highest thermal efficiency made it very popular. At the same time, the cost of diesel fuel is increasing, due to the depletion of fossil fuels. In this current scenario, we need an alternative fuel instead of diesel fuel. Many of the researchers have successfully placed several works on generating energy from different types of alternative sources including solar and some kind of conversion processes including renewable agricultural products into liquid fuel. One of the biggest challenges for developing countries in relation to energy consumption is to develop and implement technologies that help to improve efficiency of automobile engines, also to reduce the emissions of harmful gases and particulate matters. In order to avoid environmental impacts, emissions are reduced or eliminated by introducing renewable energy resources. The present research chronicles the production and testing of renewable biodiesel fuel derived from virgin coconut oil on a diesel engine, to analyses the engine performance and emission characteristics. In the first phase of work, production of biodiesel fuel from virgin coconut oil using transeterification process with two types of catalysts (homogenous and heterogeneous). The preliminary results shows that, with the addition of homogenous catalyst called Potassium Hydroxide (KOH) with methanol shows much higher activity than that of heterogeneous catalysts, and it shows more similar properties with diesel fuel. The results obtained from the chemical test and physicochemical properties of transesterified biodiesel fuel clearly proves the above-mentioned statement. The chemical tests such as GCMS and FT-IR clearly shows that the biodiesel fuel has sufficient amount of volatile components and functional groups. Then, physicochemical properties include, Fire point, Flashpoint, density, and viscosity were analyzed. Finally, Engine performance and Emission characteristics were analysed to confirm, whether this biodiesel fuel is suitable for diesel engines, without any engine modifications. It was found to be, the transesterified virgin coconut oil biodiesel has similar properties to that of the diesel fuel. From the physiochemical properties and engine performance clearly shows that, coconut oil biodiesel is suitable for diesel engine on blending, at a blending percentage level of 20% with conventional diesel fuel. Since the obtained transesterified biofuel can be used as an alternative fuel for diesel engines. The several journal reports and find outs from experimental investigation clearly depicts that the efficiency of the transesterified biofuel mainly depends upon the amount of catalyst adding and type of catalysts present in the biofuel, whether it is homogenous or heterogeneous catalyst is suitable with methanol. Finally, from the analysis made from biodiesel fuel. Coconut Oil Biodiesel fuel has less emission characteristics than that of the diesel fuels.

Influences of Charge Air Humidity and Temperature on the Performance and Emission Characteristics of Diesel Engines

1996 ◽  
Vol 40 (02) ◽  
pp. 172-177
Author(s):  
Cherng-Yuan Lin ◽  
Yuan-Liang Jeng
Keyword(s):  
Carbon Monoxide ◽  
Sulfur Dioxide ◽  
Diesel Engines ◽  
Excess Oxygen ◽  
Emission Characteristics ◽  
Air Conditioner ◽  
Performance And Emission ◽  
Sulfur Dioxide Emissions ◽  
Test Engine ◽  
Higher Temperature

The effects of humidity and temperature of intake air on the performance and emission characteristics of diesel engines were systematically investigated in order to improve their design and operations. A fourstroke diesel engine with a displacement volume of 3856 cc was employed as the test engine. The intake air was conditioned to various temperatures and humidities via an air-conditioner before entering the intake port of the engine. This study shows that the air consumption rate, brake torque, and nitrogen oxides decrease, while the brake specific fuel consumption, carbon monoxide, and sulfur dioxide increase with both the temperature and humidity of the charge air. However, the effects of the humidity on the formation of the carbon monoxide and sulfur dioxide emissions are more significant at a higher temperature of the charge air. Furthermore, charge air temperature tends to increase the percentage of C02 in the exhaust while decreasing the percentage of excess oxygen.

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