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Title: Experimental Investigations and Modelling Studies on Performance of Spark Ignited Engine with Varied Composition of Producer gas
Researcher: Babu, Metikela Sreedhar
Guide(s): Clement, Shibu
Keywords: Mechanical Engineering, Spark Ignited Engine, Producer gas
University: Birla Institute of Technology and Science
Completed Date: 2016
Abstract: Internal combustion engines have been a major source for power generation worldwide over many decades. The utility of engines powering the generator sets (gensets) has been a newlinetremendous benefit to society but at the cost of degradation to environment due to harmful newlineemissions. In this context, as a part to combat climate change and to reduce dependency on fossil fuels, major research is focused on (i) improving the existing engine design, (ii)improving the combustion process (iii) after treatment of exhaust gases and (iv) adoption of renewable fuels. Among the alternative fuels, Producer gas (PG) is one such renewable and eco-friendly fuel, having a potential to meet the twin requirement of improving the incylinder combustion process and also an ability to undergo a cleaner combustion resulting in lower emission levels. PG is derived from a thermo-chemical energy conversion route. Here the biomass undergoes a gasification process (air as gasification agent) in a gasifier, giving newlinerise to a multi component fuel called Producer gas. PG is a mixture of three combustibles and two non-combustibles gases namely, hydrogen, methane, carbon monoxide and carbondi-oxide, nitrogen respectively. The composition and calorific value of PG varies widely depending upon the type of feed stock used and gasifier design. Among the reactor units, downdraft gasifiers are most suitable for engine application due to their ability to break down higher hydrocarbons like tar and clinkers. Based on above discussion, in the present work the dynamics associated with engine combustion process against the fluctuating trend in producer gas fuel composition is taken up. In order to assess the magnitude of variation in engine combustion and performance parameters, bottled fuel gas was considered. However, interfacing highly pressurized PG bottle is challenging. This arrangement requires great control and systematic handling of induction system for safe operation of PG engine. Owing to typical A/F mass ratio, the PG engine requires tailor made carbuna
Pagination: 144p.
Appears in Departments:Mechanical Engineering

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