Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTAL COMPARISON OF DIESEL AND DIESEL BUTANOL MIXTURES IN A COMPRESSION IGNITION ENGINE
Submission Author:
Lucas Peixoto , PR
Co-Authors:
Lucas Peixoto, Stephan Hennings Och, Carlos augusto Henning Laurindo, Paulo Philippi
Presenter: Lucas Peixoto
doi://10.26678/ABCM.COBEM2019.COB2019-2144
Abstract
Renewable fuel sources are a focus of research in Brazil, especially the ones derived from sugarcane, due to its large agricultural potential, the country focus, being on the production and commercialization of ethanol, a well-researched fuel. Nevertheless, new options of alcohol fuels are being researched in the last decade. Higher alcohols such as n-butanol draw the attention due to its greater energy density resulted from its four carbon-carbon bonds, compared to ethanol two, another characteristic that appeals its cetane number closer to Diesel fuel, making its mixture with Diesel an attractive fuel to compression ignition engines. The aim is to evaluate experimentally the effects of n-butanol addition (10%, 15% and 20%) in commercial Diesel on a single cylinder compression ignition engine. The parameters analyzed were brake power, torque, brake specific fuel consumption, emissions and exhaust gas temperature. A single cylinder compression ignition engine was coupled to an eddy-current dynamometer and instrumented with pressure and temperature sensors as well emissions measurement probe. Tests were conducted with engine loads of 25%, 50%, 75% and 100% at 2000 rpm. The results show that butanol Diesel blends produce lower and nitrogen oxide (NOx) due to butanol oxygen content and its higher enthalpy of vaporization while producing more carbon monoxide (CO), carbon dioxide (CO2) and unburned hydrocarbon (HC) than pure Diesel. Brake specific fuel consumption of butanol Diesel blends is showed to be higher to diesel at all loads. Exhaust temperature also due to the higher enthalpy of vaporization is lower or similar in butanol Diesel blends than in the reference fuel.
Keywords
diesel engines, n-butanol, renewable fuels, emission
