scholarly journals Corrosion of the metal parts of diesel engines in biodiesel-based fuels

2019 ◽  
Vol 8 (2) ◽  
pp. 119
Author(s):  
Xuan Phuong Nguyen ◽  
Hai Nam Vu
Keyword(s):  
Fossil Fuels ◽  
Immersion Test ◽  
Oxidation Products ◽  
Metal Corrosion ◽  
Secondary Products ◽  
Transportation Sector ◽  
Advanced Analysis ◽  
Corrosion Mechanisms ◽  
Engine Components ◽  
Static Immersion

Biodiesel, an environmentally-friendly bio-fuel, has been regarded as one of the most promising alternatives to fossil fuels whose use is rampant in the transportation sector. However, it is important that the corrosive effects of this fuel on engines are studied. This work reviews the corrosiveness that biodiesel exerts on various engine components, especially those made out of metals. First, an analysis of the corrosion mechanisms of metals exposed to biodiesel is provided. The conventional and advanced analysis methods will be applied to measure the level of corrosiveness in static immersion test, and to assess the formation of secondary products, if any, in biodiesel and any metal strips in contact with biodiesel-based fuel. The use of inhibitions to guard against corrosion will be mentioned. Lastly, several significant causes of metal corrosion, namely, the presence of dissolved oxygen and oxidation products, TAN change, a rise in dissolved water, the presence of metals, and the changes in biodiesel properties will also be presented. ©2019. CBIORE-IJRED. All rights reserved

scholarly journals Oxidative stability during frozen storage of fillets from silver catfish (Rhamdia quelen ) sedated with the essential oil of Aloysia triphylla during transport

2016 ◽  
Vol 46 (3) ◽  
pp. 560-566 ◽  
Author(s):  
Ana Paula Daniel ◽  
Lauren Fresinghelli Ferreira ◽  
Bruna Klein ◽  
Amanda Roggia Ruviaro ◽  
Andréia Quatrin ◽  
...  
Keyword(s):  
Essential Oil ◽  
Lipid Oxidation ◽  
Oxidative Stability ◽  
Frozen Storage ◽  
Storage Period ◽  
Oxidation Products ◽  
Secondary Products ◽  
Silver Catfish ◽  
Rhamdia Quelen ◽  
Aloysia Triphylla

ABSTRACT: This research aimed to evaluate whether the essential oil of Aloysia triphylla (EOAT) used in vivo as a sedative in the water for transporting fish could increase the oxidative stability of silver catfish (Rhamdia quelen) fillets during frozen storage. The chemical composition of EOAT and of fillets from fish exposed to EOAT (0, 30 or 40µL L-1) were assessed. The pH and lipid oxidation parameters (conjugated dienes, CD; thiobarbituric acid-reactive-substances, TBARS) were evaluated in the fillets throughout the storage period (-18±2oC/17 months). The main compounds found in EOAT were α- and β-citral. Treatment with EOAT did not modify the proximate composition of the fillets, but 40µL L-1 EOAT reduced pH levels when compared to the control fillets (P<0.05). Compared to the control fillets, the fillets from fish treated with 30 and 40µL L-1 EOAT had higher initial CD values (P<0.05), whereas fillets from fish treated with 40µL L-1 EOAT had lower TBARS levels after 6, 9 and 17 months of storage (P<0.05). Results indicated that use of EOAT as a sedative in silver catfish transport water delays the degradation of primary oxidation products (CD) into secondary products (TBARS) in the frozen fillets. This delay in the lipid oxidation rate may increase the shelf life of frozen fillets.

scholarly journals Alternative Aircraft Fuels

1979 ◽  
Vol 101 (1) ◽  
pp. 155-161 ◽  
Author(s):  
J. P. Longwell ◽  
J. Grobman
Keyword(s):  
Thermal Stability ◽  
Fossil Fuels ◽  
Freezing Point ◽  
Pollutant Emissions ◽  
Efficient Utilization ◽  
Ignition Characteristics ◽  
Aviation Turbine Fuel ◽  
Engine Components ◽  
Combustor Liner ◽  
Thermal Stability Of

The efficient utilization of fossil fuels by future jet aircraft may necessitate the broadening of current aviation turbine fuel specifications. The most significant changes in specifications would be an increased aromatics content and a higher final boiling point in order to minimize refinery energy consumption and costs. These changes would increase the freezing point and might lower the thermal stability of the fuel, and could cause increased pollutant emissions, increased combustor liner temperatures, and poorer ignition characteristics. This paper discusses the effects that broadened specification fuels may have on present-day jet aircraft and engine components and the technology required to use fuels with broadened specifications.

Experimental Evaluation of Injection Pressure for a Mahua Oil Methyl Ester (MOME) Fueled C.I. Engine

2014 ◽  
Vol 984-985 ◽  
pp. 962-966
Author(s):  
B. Kondaiah ◽  
B. Durga Prasad
Keyword(s):  
Methyl Ester ◽  
Thermal Efficiency ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Specific Energy Consumption ◽  
Injection Pressure ◽  
Mahua Oil ◽  
Transportation Sector ◽  
Hc Emissions ◽  
Injection Pressures

:The population explosion in India is causing heavy consumption of energy resources. Most of the transportation sector is based on diesel as fuel. In this regard, it is high time for the search of renewable alternative fuels to reduce the dependency of oil imports. The usage of fossil fuels is also causing environment pollution. To minimize the pollution, an alternative to diesel is found to be non edible Mahua oil. In the present work, experiments were carried out on Mahua oil methyl ester (MOME) fuel and evaluated its performance at different injection pressures ranging from 190 to 220bar with the increment of 10 bar. The effect of blending of MOME with diesel at different injection pressures were studied experimentally to evaluate the brake thermal efficiency, brake specific energy consumption (BSEC), carbon monoxide (CO), and unburnt hydrocarbon (HC) emissions. It was observed from experimental results that 20% MOME (B20) have higher thermal efficiency at 190 bar compared with pure diesel and also HC and CO emissions were reduced.

Comparative Analysis on Characteristics of Gasoline & Gasoline Methanol Blend

2012 ◽  
Vol 588-589 ◽  
pp. 111-114
Author(s):  
Venkata Kalyan Chivukula ◽  
M.V. Aditya Nag
Keyword(s):  
Climate Change ◽  
Fossil Fuels ◽  
Chemical Processes ◽  
Policy Makers ◽  
Automotive Fuel ◽  
Transportation Sector ◽  
The World ◽  
Potential Alternative ◽  
Positive Properties ◽  
High Octane

Researchers, environmentalists, and policy makers are keen to reduce the dependency on use of fossil fuels towards climate change. Various alternatives are being implemented for alternate sources of energy for transportation sector; Biofuels can reduce the dependency on the import of the fossil fuels. Different kind of biofuels are available compositions are alcohols, ethers, esters etc. Commonly available biofuels are ethanol, methanol and biodiesel. They can be produced from various thermo-chemical and bio-chemical processes. Methanol has been gaining momentum as a potential alternative for traditional fossil fuels in transportation sector. There is an increased trend in the development of methanol as a fuel around the world. This paper deals with the study of the use of methanol as an automotive fuel. Methanol has certain positive properties on the vehicle’s performance. However, methanol cannot be used directly as a fuel in the vehicles due to volatility and compatibility issues. But it could be used as a blend with the gasoline for its characteristics such as high octane number and lower emissions. Blending of methanol with gasoline will have affect on the properties of blend, this paper discusses about the change in properties and its effects on engine.

scholarly journals Design Development and Analysis of Future Reliable Electric Vehicle

2021 ◽  
Vol 9 (VIII) ◽  
pp. 319-324
Author(s):  
Milan Motta
Keyword(s):  
Climate Change ◽  
Fossil Fuels ◽  
Complex Structure ◽  
Realistic Model ◽  
Design Development ◽  
Matlab Simulation ◽  
Damage Costs ◽  
Transportation Sector ◽  
And Performance ◽  
Do So

Universal climate change has already had noticeable effects on the environment. Net damage costs of climate change are likely to be considerable and to swell over time and emissions from transportation sector and use of fossil fuels in this scenario is just like adding fuel to fire. This work is a small effort made not only to portray the development of future reliable technologies in eVehicle that provides a cleaner solution with less carbon footprint but also to explain and establish the importance of the eVehicle as the most efficient and clean means of transportation with the help of plan and performance analysis. This paper presents the detailed analysis of different components of Battery operated eVehicle. The proposed EV Design addresses issues like range, drive train efficiency, fast exploration of higher system voltages ,charging times and reduced vehicle weight and tries to develop it as an option that is significantly safe, energy efficient, environmentally-friendly and easily controllable and to do so design, analysis and MATLAB simulation is carried out on battery operated eVehicle. As a BEV has a complex structure for analysis a realistic model is considered the accuracy simulation results are verified with theoretical outcome.

scholarly journals Evolution of the ε and γ phases in biodegradable Fe–Mn alloys produced using laser powder-bed fusion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Črtomir Donik ◽  
Jakob Kraner ◽  
Aleksandra Kocijan ◽  
Irena Paulin ◽  
Matjaž Godec
Keyword(s):  
Laser Power ◽  
Scanning Speed ◽  
Immersion Test ◽  
Pure Metal ◽  
Corrosion Stability ◽  
Powder Bed ◽  
Ε Phase ◽  
Mn Content ◽  
Static Immersion ◽  
Comprehensive Study

AbstractThe key feature of Fe–Mn alloys is gradual degradability and non-magneticity, with laser power bed fusion (LPBF) parameters influencing the microstructure and chemical composition. Our study focuses on biodegradable Fe–Mn alloys produced by mechanically mixing pure metal feedstock powders as part of the LPBF process. The Mn content and, consequently, the γ-ε phase formation in LPBF samples are directly correlated with an adapted energy–density (E) equation by combining the five primary LPBF parameters. We varied laser power (P) in a range of 200–350 W and scanning speed at 400 and 800 mm/s, and a comprehensive study was performed on samples with similar E. The study also showed an almost linear correlation between the LPBF's laser power and the material's hardness and porosity. The corrosion resistance was significantly reduced (from 13 to 400 μm/year) for the LPBF samples compared to a conventionally produced sample due to the dual-phase microstructure, increased porosity and other defects. The static immersion test showed that the process parameters greatly influence the quantity of oxides and the distribution of their diameters in the LPBF samples and, therefore, their corrosion stability. The most challenging part of the study was reducing the amount of ε phase relative to γ phase to increase the non-magnetic properties of the LPBF samples.

A Laboratory Study of N-Oleoyl Sarcosine As a Rust Inhibitor in Some Petroleum Products★

CORROSION ◽  
1957 ◽  
Vol 13 (10) ◽  
pp. 92-96 ◽  
Author(s):  
ROBERT M. PINES ◽  
JOHN D. SPIVACK
Keyword(s):  
Sea Water ◽  
Water Drop ◽  
Immersion Test ◽  
Petroleum Products ◽  
Laboratory Studies ◽  
Turbine Oil ◽  
Static Water ◽  
Water Drop Test ◽  
Rust Inhibitor ◽  
Static Immersion

Abstract Laboratory studies indicate that N-oleoyl sarcosine (I) is an effective oil soluble rust inhibitor in solution in gasoline, mineral oil and silicone lubricants. Rusting tests used included: Turbine Oil Rusting Test (ASTM D665-54), a Static Immersion Test, Humidity Cabinet Test (JAN H-792), Static Water Drop Test (MIL-L-17353 Bu. Ord.). In addition, a number of auxiliary tests were run to indicate the effect of (I) on other properties of the test liquid. Hydrocarbon solutions of N-oleoyl sarcosine are particularly effective in preventing rusting in the presence of synthetic sea water and in resisting water extraction of the inhibitor. 5.8.2

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