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.

Effect of Biodiesel Fuel Injection Timing and Venture for Gaseous Fuel Induction on the Performance, Emissions and Combustion Characteristics of Dual Fuel Engine

“…Diesel engine operation with gaseous fuel in dual fuel mode typically has five stages of combustion phases, instead of the regular four as observed in liquid fueled diesel engines. Diesel engine performance was found to be inferior when fueled with gaseous fuels and the same could be improved by advancing the fuel injection timing, increasing compression ratio, and optimizing both nozzle and combustion chamber combinations (Banapurmath et al, 2011;Yaliwal, et al, 2014;Yaliwal et al, 2016). At higher compression ratio and advanced injection timing, the smoke, hydrocarbon emissions were considerably reduced while NOx emissions increased over the range of operating conditions (Fazal et al, 2011;Agarwal and Assanis, 1998).…”

“…Compression ignition (CI) engines are conveniently operated with wide variety of alternative fuels and these fuels have favorable advantages such as renewability, sustainability, and biodegradability and could address the energy security, environmental and socio-economic issues of a country as well (Banapurmath et al, 2011;Yaliwal et al, 2014;Yaliwal et al, 2016). Several researchers have carried out investigations on diesel engines powered with liquid and gaseous fuels unlike.…”

“…Several researchers have carried out investigations on diesel engines powered with liquid and gaseous fuels unlike. Accordingly, biodiesels derived from non-edible resources and gaseous fuels such as producer gas, compressed natural gas (CNG) and hydrogen are promising alternative fuel candidates for complete or partial replacement for fossil diesel (Banapurmath et al, 2011;Yaliwal et al, 2014;Yaliwal et al, 2016).…”

“…Lower calorific value of biodiesel decreases the engine performance and hence for achieving same power output, more quantity of fuel needs to be supplied per stroke (Senthilkumar et al, 2015). Higher emission levels in biodiesel injected engines can be minimized by the use of gaseous fuel when the same engine is modified to operate in dual fuel engine (Banapurmath et al, 2011;Yaliwal et al, 2014;Sabinus, 2012;Jinlin, 2011). However, because of its high self-ignition temperature and lower cetane number, gaseous fuel operation demands small quantity of pilot liquid fuels to be injected (Banapurmath et al, 2011;Yaliwal et al, 2014;Yaliwal et al, 2016).…”

“…Higher emission levels in biodiesel injected engines can be minimized by the use of gaseous fuel when the same engine is modified to operate in dual fuel engine (Banapurmath et al, 2011;Yaliwal et al, 2014;Sabinus, 2012;Jinlin, 2011). However, because of its high self-ignition temperature and lower cetane number, gaseous fuel operation demands small quantity of pilot liquid fuels to be injected (Banapurmath et al, 2011;Yaliwal et al, 2014;Yaliwal et al, 2016). Diesel engine operation with gaseous fuel in dual fuel mode typically has five stages of combustion phases, instead of the regular four as observed in liquid fueled diesel engines.…”