Investigation of the Performances of a Diesel Engine Operating on Blended and Emulsified Biofuels from Rapeseed Oil

Vladimir Anatolyevich Markov,Anatoly Anatolyevich Zherdev,Sergey Nikolaevich Devyanin,Sergey Anatolyevich Zykov,Bowen Sa,Pablo Ramon Vallejo Maldonado,Aleksandr Dmitrievich Denisov,Hewage Chithral Ambawatte

doi:10.3390/en14206661

Abstract

The article discusses the possibility of using blended biofuels from rapeseed oil (RO) as fuel for a diesel engine. RO blended diesel fuel (DF) and emulsified multicomponent biofuels have been investigated. Fuel physicochemical properties have been analyzed. Experimental tests of a diesel engine D-245 in the operating conditions of the external characteristic curve and the 13-mode test cycle have been conducted to investigate the effect of these fuels on engine performances. CFD simulations of the nozzle inner flow were performed for DF and ethanol-emulsified RO. The possibility of a significant improvement in brake thermal efficiency of the engine has been noted. The efficiency of using blended biofuels from RO as a motor fuel for diesel engines has been evaluated based on the experimental test results. It was shown that in comparison with the presence of RO in emulsified multicomponent biofuel, the presence of water has a more significant effect on NOx emission reduction. The content of RO and the content of water in the investigated emulsified fuels have a comparable influence on exhaust smoke reduction. Nozzle inner flow simulations show that the emulsification of RO changes its flow behaviors and cavitation regime.

Highlights

Given the growing problem of global warming and increasingly stringent emissions regulations, a number of measures must be taken to reduce emissions of carbon dioxide (CO2) and emissions of pollutant substances
The Performances of the Diesel Engine Fueled with diesel fuel (DF)-rapeseed oil (RO) Blends
At the first stage of research, the diesel engine D-245 was tested on pure DF and DF-RO blends

Summary

Introduction

Given the growing problem of global warming and increasingly stringent emissions regulations, a number of measures must be taken to reduce emissions of carbon dioxide (CO2) and emissions of pollutant substances. The use of renewable fuels solves the gradual depletion of fossil fuel reserves and the rise in prices for oil and oil products. Under these conditions, using renewable fuels in transport, agriculture, and other sectors of the economy becomes necessary and economically justified [1,2,3]. Renewable fuels are fuels obtained from renewable energy resources of plant origin, the raw material reserves of which are practically unlimited [4,5] These fuels include synthetic biofuels obtained from plant mass [6,7], bioalcohol fuels [8,9], fuels produced from vegetable oils [10,11], and gaseous biofuels—biogas, syngas produced from the gasification of municipal solid waste, food and wood industry waste, agricultural waste, etc. These fuels include synthetic biofuels obtained from plant mass [6,7], bioalcohol fuels [8,9], fuels produced from vegetable oils [10,11], and gaseous biofuels—biogas, syngas produced from the gasification of municipal solid waste, food and wood industry waste, agricultural waste, etc. [12,13]

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