Experimental study on sparking ignition engine performance for optimal mixing ratio of ethanol–gasoline blended fuels

2016 ◽  
Vol 100 ◽  
pp. 869-879 ◽  
Author(s):  
S. Phuangwongtrakul ◽  
W. Wechsatol ◽  
T. Sethaput ◽  
K. Suktang ◽  
S. Wongwises
Keyword(s):  
Experimental Study ◽  
Engine Performance ◽  
Mixing Ratio ◽  
Blended Fuels ◽  
Optimal Mixing

Experimental Study on the Compressive Strength of Nano-Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 1563-1567 ◽  
Author(s):  
Bang Hua Xie ◽  
Chun Tao Wang ◽  
Min Fu Fu ◽  
Yun Sheng Li
Keyword(s):  
Experimental Study ◽  
Growth Rate ◽  
Compressive Strength ◽  
Concrete Research ◽  
Mixing Ratio ◽  
Mixing Ratios ◽  
Compressive Strength Of Concrete ◽  
Optimal Mixing ◽  
Effect Of Age

In order to investigate the effect of Nano-SiO2 on the compressive strength of concrete, the paper studies the effect of different mixing ratios (0%~3%) on the compressive strength, and the effect of age on the compressive strength of nano-concrete. Research shows that the incorporation of Nano-SiO2 increased the compressive strength of concrete: it increases slowly with the mixing ratio 0%~1%; the growth rate is declining when the mixing ratio is 1.5%~3%; the optimal mixing ratio is 1.0~1.5%, which can replace 3.33~10% of cement.

scholarly journals A Comparison of Ethanol, Methanol, and Butanol Blending with Gasoline and Its Effect on Engine Performance and Emissions Using Engine Simulation

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1322
Author(s):  
Simeon Iliev
Keyword(s):  
Alternative Fuels ◽  
Fossil Fuels ◽  
Gasoline Engine ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Engine Simulation ◽  
Engine Model ◽  
Fuel Blends ◽  
Performance And Emissions ◽  
Blended Fuels

Air pollution, especially in large cities around the world, is associated with serious problems both with people’s health and the environment. Over the past few years, there has been a particularly intensive demand for alternatives to fossil fuels, because when they are burned, substances that pollute the environment are released. In addition to the smoke from fuels burned for heating and harmful emissions that industrial installations release, the exhaust emissions of vehicles create a large share of the fossil fuel pollution. Alternative fuels, known as non-conventional and advanced fuels, are derived from resources other than fossil fuels. Because alcoholic fuels have several physical and propellant properties similar to those of gasoline, they can be considered as one of the alternative fuels. Alcoholic fuels or alcohol-blended fuels may be used in gasoline engines to reduce exhaust emissions. This study aimed to develop a gasoline engine model to predict the influence of different types of alcohol-blended fuels on performance and emissions. For the purpose of this study, the AVL Boost software was used to analyse characteristics of the gasoline engine when operating with different mixtures of ethanol, methanol, butanol, and gasoline (by volume). Results obtained from different fuel blends showed that when alcohol blends were used, brake power decreased and the brake specific fuel consumption increased compared to when using gasoline, and CO and HC concentrations decreased as the fuel blends percentage increased.

scholarly journals Effect of Coconut Biodiesel Blended Fuels on Engine Performance and Emission Characteristics

2013 ◽  
Vol 56 ◽  
pp. 583-590 ◽  
Author(s):  
A.M. Liaquat ◽  
H.H. Masjuki ◽  
M.A. Kalam ◽  
I.M. Rizwanul Fattah ◽  
M.A. Hazrat ◽  
...  
Keyword(s):  
Engine Performance ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Blended Fuels

Performance Investigation of a Four Stroke Diesel Engine, Using Water-Based Ferrofluid as an Additive

2011 ◽  
Author(s):  
F. Daneshvar ◽  
N. Jahani ◽  
M. B. Shafii
Keyword(s):  
Experimental Study ◽  
Magnetic Nanoparticles ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Brake Specific Fuel Consumption ◽  
Engine Exhaust ◽  
Brake Thermal Efficiency ◽  
Diesel Fuels ◽  
Water Based

In this experimental study, a four stroke diesel engine was conducted to investigate the effect of adding water-based ferrofluid to diesel fuel on engine performance. To our knowledge, Magnetic nanoparticles had not been used before. To this end, emulsified diesel fuels of 0, 0.4, and 0.8 water-based ferrofluid/Diesel ratios by volume were used as fuel. The ferrofluid used in this study was a handmade water-based ferrofluid prepared by the authors. The results show that adding water-based ferrofluid to diesel fuel has a perceptible effect on engine performance, increasing the brake thermal efficiency relatively up to 12%, and decreasing the brake specific fuel consumption relatively up to 11% as compared to diesel fuel. In addition, the results indicate that increasing ferrofluid concentration will magnify the results. Furthermore, it was found that magnetic nanoparticles can be collected at the engine exhaust using magnetic bar.

scholarly journals Synthesis of Tungsten-Doped Vanadium Dioxide Using a Modified Polyol Method Involving 1-Dodecanol

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5384
Author(s):  
Yonghyun Lee ◽  
Sang Won Jung ◽  
Sang Hwi Park ◽  
Jung Whan Yoo ◽  
Juhyun Park
Keyword(s):  
Linear Growth ◽  
Mixing Ratio ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Metal Insulator ◽  
X Ray ◽  
Mixing Ratios ◽  
The Difference ◽  
Modified Polyol Method ◽  
Optimal Mixing

The doping of tungsten into VO2 (M) via a polyol process that is based on oligomerization of ammonium metavanadate and ethylene glycol (EG) to synthesize a vanadyl ethylene glycolate (VEG) followed by postcalcination was carried out by simply adding 1-dodecanol and the tungsten source tungstenoxytetrachloride (WOCl4). Tungsten-doped VEGs (W-VEGs) and their calcinated compounds (WxVO2) were prepared with varying mixing ratios of EG to 1-dodecanol and WOCl4 concentrations. Characterizations of W-VEGs by powder X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and infrared and transmittance spectroscopy showed that tungsten elements were successfully doped into WxVO2, thereby decreasing the metal-insulator transition temperature from 68 down to 51 °C. Our results suggested that WOCl4 variously combined with 1-dodecanol might interrupt the linear growth of W-VEGs, but that such an interruption might be alleviated at the optimal 1:1 mixing ratio of EG to 1-dodecanol, resulting in the successful W doping. The difference in the solar modulations of a W0.0207VO2 dispersion measured at 20 and 70 °C was increased to 21.8% while that of a pure VO2 dispersion was 2.5%. It was suggested that WOCl4 coupled with both EG and 1-dodecanol at an optimal mixing ratio could improve the formation of W-VEG and WxVO2 and that the bulky dodecyl chains might act as defects to decrease crystallinity.

scholarly journals Characterization of Performance of Short Stroke Engines with Valve Timing for Blended Bioethanol Internal Combustion

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 759 ◽  
Author(s):  
Kun-Ho Chen ◽  
Yei-Chin Chao
Keyword(s):  
Co2 Emissions ◽  
Ignition Time ◽  
Engine Performance ◽  
Valve Timing ◽  
Atkinson Cycle ◽  
Blended Fuel ◽  
Exhaust Valves ◽  
Blended Fuels ◽  
Stroke Engine

The present study provides a feasible strategy for minimizing automotive CO2 emissions by coupling the principle of the Atkinson cycle with the use of bioethanol fuel. Motor cycles and scooters have a stroke to bore ratio of less than unity, which allows higher speeds. The expansion to compression ratio (ECR) of these engines can be altered by tuning the opening time of the intake and exhaust valves. The effect of ECR on fuel consumption and the feasibility of ethanol fuels are still not clear, especially for short stroke engines. Hence, in this study, the valve timing of a short stroke engine was tuned in order to explore potential bioethanol applications. The effect of valve timing on engine performance was theoretically and experimentally investigated. In addition, the application of ethanol/gasoline blended fuels, E3, E20, E50, and E85, were examined. The results show that consumption, as well as engine performance of short stroke motorcycle engines, can be improved by correctly setting the valve controls. In addition, ethanol/gasoline blended fuel can be used up to a composition of 20% without engine modification. The ignition time needs to be adjusted in fuel with higher compositions of blended ethanol. The fuel economy of a short stroke engine cannot be sharply improved using an Atkinson cycle, but CO2 emissions can be reduced using ethanol/gasoline blended fuel. The present study demonstrates the effect of ECR on the performance of short stroke engines, and explores the feasibility of applying ethanol/gasoline blended fuel to it.

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