Energy analysis and exhaust emissions of a stationary engine fueled with diesel–biodiesel blends at variable loads

Abstract

class) and biodiesel at different loads. An in-house developed system for particulate matter (PM) evaluation was created. Gaseous emissions and energy flows were evaluated. A reduction of 45% in PM emissions was observed by increasing biodiesel content from B5 to B100 at the highest load tested (27 kW). CO and NOx emissions increased slightly when compared to the mixture commercialized in Brazilian market (5% biodiesel and 95% conventional diesel). No significant variation in energy efficiency was revealed by increasing the percentage of biodiesel in the blend.

Mechanical and emissions performance of a diesel engine fueled with biodiesel, ethanol and diethyl ether blends

“…As biodiesel is free of aromatics, lower affinities with smoke for biodiesel blends reducing particulate matter are expected [27]. In addition, the oxygen content leads to more oxygen areas in the combustion process and sulfur free of biodiesel (which is a soot precursor) which are also responsible for PM reduction [38]. The tests performed using B20 presented a PM reduction at the load of 24 kW of 7.2% in relation to D100.…”

The misleading total replacement of internal combustion engines by electric motors and a study of the Brazilian ethanol importance for the sustainable future of mobility: a review

“…He also highlights the need to improve the ICEs efficiency and the possibility of developing a Brazilian engine entirely focused on having ethanol as the only fuel option, which would result in high performance and low emissions. He closes affirming the importance of several energy sources, such as electricity, hydrogen, gasoline, solar energy and ethanol, which will depend on y = 235566x 2 the conditions of each region of the planet and allows the consumer freedom of choice and energy independence. It is worth mentioning the current situation of urban transport practiced in Sweden.…”

“…Mainly motivated by the emergence of major agreements for the future of the environment since the Kyoto Protocol in 1997 [1], some groups attribute to the ICEs part of the responsibility for the energy crisis and air pollution that currently afflict the world. Criticism is more specifically directed to the consumption of non-renewable resources and the emission of pollutants, characteristics of their operation [2,3]. Among the gases derived from combustion that can affect the Earth climate, special attention is given to carbon dioxide, the CO 2 , whose increased concentration in the atmosphere is believed to heavily contribute to climate changes and the global warming [4,5].…”

Pollutant Emissions and Combustion Efficiency Assessment of Engines Using Biodiesel

“…In other investigations related to electric generators (with diesel engines), there have been increases in HC and CO 2 , but NOx and CO are reduced [26]; even the reduction of sulfur dioxide (SO 2 ) has been reported [23]. Some of the reasons for these behaviors lie in the biofuel's chemical composition: the increase in oxygen in the fuel produces high temperatures that generate these polluting gases [27]. The importance of pressure and temperature conditions to which the combustion chamber is subjected and the adequate formation of the air/fuel mixture are factors that influence the generation of polluting emissions [28].…”