No abstract

No abstract

The present work discusses the performance and emissions characterization of dual biodiesel sample blends on a varying compression ratio diesel engine. The dual biodiesel blends were obtained by blending two biodiesels (Mahua and Jatropha) in equal proportions volume (1:1, v/v) with mineral diesel. The sample blends were obtained on a ‘percentage by volume’ basis and named B10, B20, B30, and B40 (B10 was a blend of 5% each biodiesel with 90% mineral diesel and similarly for all other sample blends). All the experiments were performed at a constant engine speed of 1500 rpm, 50% loading conditions (2.6 kW), and varying compression ratios of 13.5:1, 14.5:1, 15.5:1, and 16.5:1. The results revealed that the sample blends had slightly higher brake power and mechanical efficiency with sample blends B10 to B40 had (0.15–1.58%) higher brake power and (1.07–12.42%) higher mechanical efficiency as compared to mineral diesel at a compression ratio of 16.5:1. The In-cylinder peak pressure and exhaust gas temperature were observed to be lower than mineral diesel for the sample blends B10 to B40 by 0.15–0.36 bar and 11.1–69.8 ℃, respectively. Also, the emissions of carbon monoxide and hydrocarbons were lower by 33–62%, respectively, for the sample with the highest blend percentage. However, the carbon dioxide emissions were found to be higher by 42.85% than mineral diesel. From the overall performance and characterization, it is concluded that B20 had optimum properties and blend percentage to be a better substitute fuel for mineral diesel among all the tested samples.

No abstract

Because the world’s fossil fuel reserves are depleting at an alarming rate as a result of increased consumption, biodiesel is a useful alternative to fossil fuels in many scenarios. Since biodiesel emits fewer harmful emissions, it’s an environmentally friendly fuel. Biodiesel can be produced at a lower cost and can be used without any modifications in the engine. The most acceptable process for biodiesel production is base-catalysed transesterification. In this present research work we prepared and compared the characteristics of the biodiesel with conventional diesel fuel. Waste fry oil taken form potato chip industry and Jatropha from Jatropha seeds methyl ester-based biodiesel was prepared using transesterification process. The pure bio-diesel was blended with diesel in some proportions making it as B20, B30, B40, B50 blends and tested in a four-stroke, four-cylinder, diesel ignition engine running at five different engine speeds 1600, 1800, 2000, 2200, 2400 respectively.

In recent years, there has been a steady increase in the number of solid wastes because of the increasing human population and urbanisation. Solids include industrial waste, agricultural waste, forest waste and waste bio-products. Bioenergy has produced a total 10% participation of energy of global energy production, energy produced from the source of biomass: plants, animal, and organic waste. In some seeds like Juliform seed, Watermelon Seed oil is prepared and blended together to produce the biodiesel and to check the performance of the biodiesel. The study also includes examination of physical and chemical properties such as pH value, viscosity, density, flash point, fire point and acid values on the produced biodiesel as well as on the conventional diesel for comparison. The study revealed that the properties of the biodiesel are very close to the conventional diesel.

Two factors that have been manipulating automobile industries and scientific communities for the study of alternative fuel/energy sources and its uses for the automobiles are depletion of oil resources and various other environmental factors. In these circumstances, some of the alternative fuel sources will have major benefits fitting into our world of automobile at present time due to their very different characteristic traits but some will also have a lot of challenging disadvantages again due to their distinct character traits. The main issue raised at the present moment is the making of the perfect choice of the alternative fuel in terms of present conditions. For the proper demarcation and determination of the perfect alternative fuel, it is essential to know the characteristics of the energy types along with their advantages and disadvantages. In this paper, a qualitative analysis of the very distinct available alternative fuels is available which are best suited for the current scenario of India (every fact and figure and demonstrations are made keeping in mind of the factor concerning the stakes and factors working in India).

No abstract