V.S. Yaliwal

Bio: V.S. Yaliwal is an academic researcher from SDM College of Engineering and Technology. The author has contributed to research in topics: Diesel fuel & Diesel engine. The author has an hindex of 10, co-authored 35 publications receiving 368 citations.

Effect of injection parameters and producer gas derived from redgram stalk on the performance and emission characteristics of a diesel engine

Abstract: The improvement in performance has been observed by changing the injector nozzle's geometry of the dual-fuel liquid–gas engine The combined effect of injector parameters and producer gas (PG) derived from the redgram stalk on the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has been studied The injector nozzles with 4, 5, and 6 holes (diameter of 02, 025, and 03 mm) were analyzed Diesel-PG operation with 4 holes, 025 mm diameter nozzle and HOME-PG operation with 6 holes, 025 mm diameter nozzle resulted in better performance and lower emissions Diesel-PG operation has 45% higher BTE (brake thermal efficiency) with a 4 hole nozzle and 07% higher for a 025 mm diameter 6 holes nozzle than HOME-PG operation The HOME-PG operation results showed that the with an injection opening pressure of 240 bar, 6-hole nozzle, and a diameter of 025 mm have an improved BTE of 58% with emission levels 15–30% lower than those of other geometries

Production and utilization of renewable and sustainable gaseous fuel for power generation applications: A review of literature

Abstract: Alternative fuels have numerous advantages compared to fossil fuels as they are renewable and biodegradable besides providing energy security and foreign exchange saving addressing environmental concerns, and socio-economic issues as well. Therefore renewable fuels can be predominantly used as fuel for transportation and power generation applications. In view of this exhaustive experiments on the use of producer gas for both spark ignition (SI) and compression ignition (CI) engine applications for short and long term trial runs have been reported in the literature. Today, the use of biomass derived producer gas is more reliant for addressing rural power generation and is a promising technique for controlling both NOx and soot emission levels. Researchers have found that, the brake thermal efficiency of producer gas operated single and dual-fuel engines were far lower compared to diesel/biodiesel operated engine and suggested that, this can be improved by improving the fuel properties, adopting good operating parameters or altering engine design. In order to address this, many researchers/scientists have proposed different solutions for enhancing the performance of a producer gas operated engine. Majority of the research work is focused on the utilization of compressed natural gas (CNG) and liquefied petroleum gas (LPG) in engines operated on both single and dual fuel mode. However, use of producer gas in engines still needs more detailed studies, as this area is less investigated. Literature review suggests that the combustion characteristics of the producer gas operated engines need extensive research for a long-term use in both gas and dual-fuel engine. In this context, this paper mainly presents a literature review based on the utilization of producer gas as fuel for transport and power generation applications. Based on the review of literatures, it can be concluded that this area requires more research with long term engine operation.

Effect of Wood Type and Carburetor on the Performance of Producer Gas-Biodiesel Operated Dual Fuel Engines

Abstract: Modern compression ignition engines combine excellent fuel efficiency with high power output, and have the ability to use high quality renewable fuels, which can be produced efficiently from biomass. With regards to the progressively stringent emission legislation in the automotive sector and the need to reduce greenhouse gas emissions over the coming decades, this research work is directed at developing diesel engine-gasifier integrated systems to operate on renewable fuels. In the present work, to make the diesel engine completely independent of fossil fuel, the diesel fuel was replaced by Honge oil methyl ester and producer gas. The non edible fuel mainly consists of biodiesel derived from Honge oil called Honge oil Methyl Ester [HOME]. The main biomass sources for producer gas generation are obtained from both ordinary and Honge wood. The proposed work therefore involves development of a system completely independent of diesel fuel with biodiesel derived from non-edible oil i.e., Honge oil and producer gas operation. In the study different carburetors were designed and developed to check the suitability of the producer gas and air mixing. Carburetors of Y- shaped, basic and parallel gas entry were considered for the study. The parallel flow carburetor operated biodiesel-gasifier dual fuel engine results in better performance compared to Y-shaped and basic carburetor system. The parallel carburetor ensures stoichiometric air and producer gas mixing compared to Y-shaped carburetor. Honge wood results in poor performance than the babul wood because of its lower density, higher moisture content and lower calorific value resulting in poorer quality of the gas.

World energy outlook

Abstract: This chapter discusses leading problems linked to energy that the world is now confronting and to propose some ideas concerning possible solutions. Oil deserves special attention among all energy sources. Since the beginning of 1981, it has merely been continuing and enhancing the downward movement in consumption and prices caused by excessive rises, especially for light crudes such as those from Africa, and the slowing down of worldwide economic growth. Densely-populated oil-producing countries need to produce to live, to pay for their food and their equipment. If the economic growth of the industrialized countries were to be 4%, even if investment in the rational use of energy were pushed to the limit and the development of nonpetroleum energy sources were also pursued actively, it would be extremely difficult to prevent a sharp rise in prices. It is evident that it is absolutely necessary to pursue actively the development of coal, natural gas, and nuclear power if a physical shortage of energy is not to block economic growth.

Inedible vegetable oils and their derivatives for alternative diesel fuels in CI engines: A review

Abstract: The use of inedible vegetable oils as an alternative fuel for diesel engine is accelerated by the energy crisis due to depletion of resources and increased environmental problems including the great need for edible oil as food and the reduction of biodiesel production cost, etc. Of a lot of inedible vegetable oils which can be exploited for substitute fuel as diesel fuel, seven vegetable oils, i.e., jatropha, karanja, mahua, linseed, rubber seed, cottonseed and neem oils were selected for discussion in this review paper. The application of jatropha oil as a liquid fuel for CI engine can be classified with neat jatropha oil, engine modifications such as preheating, and dual fuelling, and fuel modifications such as jatropha oil blends with other fuels, mostly with diesel fuel, biodiesel, biodiesel blends and degumming. Therefore, jatropha oil is a leading candidate for the commercialization of non-edible vegetable oils. There exists a big difference in the fuel properties of seven inedible vegetable oils and its biodiesels considered in this review. It is clear from this review that biodiesel generally causes an increase in NOx emission and a decrease in HC, CO and PM emissions compared to diesel. It was reported that a diesel engine without any modification would run successfully on a blend of 20% vegetable oil and 80% diesel fuel without damage to engine parts. This trend can be applied to the biodiesel blends even though particular biodiesel shows 40% blend. In addition, the blends of biodiesel and diesel can replace the diesel fuel up to 10% by volume for running common rail direct injection system without any durability problems.

A review on latest developments and future prospects of heterogeneous catalyst in biodiesel production from non-edible oils

Abstract: The research on biodiesel production via heterogeneous catalyzed approach is continuously studied by scientist in order to gain a sustainable process for industrial production and to improve its fuel quality The green resource of biodiesel feedstock and catalyst is the major criteria to influence the biodiesel yield and sustainability of the process For the state of the art biodiesel production technology, heterogeneous catalyst received great attention for simple and low cost manufacturing process In terms of easy separation and high reusability The most special characteristic of heterogeneous catalyst is its tuning properties that generate acidic-basicity, surface area and porosity that can highly advance the variety of the feedstock for esterification/transesterification process Different traits of the heterogeneous catalysts (solid base, solid acid, acid-base and bio-catalyst) are studied in this review as each holds a specialty of features to the process Thus, the study of heterogeneous catalyst should continue to be evaluated and taken into account if the catalyst are to be employed in the commercial sector as that remains the pivotal goal of these studies In consideration to the debate of food vs fuel as well as low cost production, non-edible feedstock was further discussed by using heterogeneous catalyzed system