Emission Characteristics for Waste Cooking Oil Biodiesel Blend in a Marine Diesel Propulsion Engine

Abstract

Diesel engines are widely used for propulsion on large ships, which has the undesired characteristic of generating large amounts of harmful emissions. To reduce these emissions, some alternative fuel was developed and used in a marine diesel engine. In this study, an experiment was carried out on a 6-cylinder turbocharged direct-injection marine diesel propulsion engine. A small proportion blend of biodiesel-diesel was used, aimed at exploring the emission characteristics and emission reduction mechanism for diesel propulsion engines. The results show that the high oxygen content of biodiesel blend is crucial for inhibiting the formation of particulate matter (PM) and reducing the formation of total unburned hydrocarbon (THC) and carbon monoxide (CO), which reduces the emission of harmful gases. At the same time, the number of particles (PN) has also decreased. However, the rapid burn rate of biodiesel was found to reduce brake thermal efficiency (BTE), resulting in an increase of fuel consumption and exhaust gas temperature (EGT), which can promote the formation of nitrogen oxides (NO x). More carbon dioxide (CO 2) is released due to the increased fuel consumption. The emission characteristics of the biodiesel blend and diesel fuel are discussed in this work.

A review on regulations, current status, effects and reduction strategies of emissions for marine diesel engines

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Biodiesel production from palm olein: A sustainable bioresource for Nigeria

“…Nigeria as a country has made little progress in establishing sustainable energy system amidst many unimplemented policies (Ishola et al, 2019), and her biofuels industry is not an exception (Odetoye et al, 2019). Different types of biofuels emanate from different countries, depending on their available bioresources (Wu et al, 2019), and the technology considered most appropriate and economical (Avagyan and Singh, 2019). Experimentation and continuous research are enabling the development of viable biodiesel feedstocks and suitable production procedures (Abbaszaadeh et al, 2012).…”

Waste-to-Energy Approach for Utilizing Non-edible Soapnut Oil Methyl Ester as a Fuel in a Twin-Cylinder Agricultural Tractor Diesel Engine

“…The variation of CO emission with the brake power for the tested fuel blends was compared in Figure . The CO emission is due to incomplete combustion of fuel and depends upon many factors, such as higher viscosity, improper spray pattern, engine temperature, carbon/hydrogen ratio, and air/fuel ratio. , The reduction in CO emission is achieved by enriching the fuel with extra oxygen through increasing the biodiesel percentage, which promotes further oxidation of CO during the exhaust process . CO emission of soapnut biodiesel blends SNB20 and SNB30 was lower at all of the loads compared to diesel.…”