Evaluation of Butanol–Gasoline Blends in a Port Fuel-injection, Spark-Ignition Engine

Abstract

Résumé -Évaluation de mélange butanol-essence dans un moteur à allumage commandé à injection indirecte -Cet article évalue le potentiel de l'utilisation de différents mélanges butanolessence dans un moteur à allumage commandé à injection indirecte afin de quantifier l'influence de l'ajout de butanol sur les émissions des hydrocarbures imbrûlés (HC), le monoxyde de carbone (CO) et les oxydes d'azote (NOx). De plus, l'influence sur la stabilité de combustion, le délai d'inflammation et sur la durée de la phase de combustion turbulente développée y sont également présentés. Les principaux résultats : 1) un mélange de 40 % butanol et 60 % essence (B40) par volume diminue les émissions de HC ; 2) aucun effet significatif sur les émissions de NOx n'a été observé à l'exception du mélange 80% butanol/20 % essence ; 3) l'ajout de butanol améliore la stabilité de combustion ; 4) l'ajout de butanol réduit le délai d'inflammation, quantifié par la durée pour consommer 10% de masse de gaz frais; et 5) la consommation spécifique de carburant pour un mélange stoechiométrique de B40 est 10% supérieure à celle de l'essence. [0][1][2][3][4][5][6][7][8][9][10] Abstract -Evaluation of Butanol-Gasoline Blends in a Port Fuel-Injection, Spark-Ignition Engine -This paper assesses different butanol-gasoline blends used in a port fuel-injection, spark-ignition engine to quantify the influence of butanol addition on the emission of unburned hydrocarbons, carbon monoxide, and nitrogen oxide. Furthermore, in-cylinder pressure was measured to quantify combustion stability and to compare the ignition delay and fully developed turbulent combustion phases as given by

Combustion Process Analysis in a DISI Engine Fuelled with N-Butanol through UV-VIS Emission Spectroscopy

“…Lower NO x emissions when using the alcohol are in line with the findings of most studies about butanol combustion in SI engines [14]- [16].The reduction in NOx emissions is due to the low adiabatic temperature when engine operates on butanol. …”

Insights into Stoichiometric and Lean Combustion Phenomena of Gasoline–Butanol, Gasoline–Ethanol, Iso-Octane–Butanol, and Iso-Octane–Ethanol Blends in an Optical Spark-Ignition Engine

“…Butanol itself has been studied in the literature much less than ethanol and mostly in PFI engines as well; some benefits in terms of blending have been reported (e.g. better stability) but trends have been sensitive to equivalence ratio, spark timing, engine temperature and valve overlap (Malcolm et al, 2007;Todd et al, 2010;Szwaja and Naber, 2010;Dernotte et al, 2010;Merola et al, 2011Merola et al, , 2012Tornatore et al, 2013;Cairns et al, 2013;Deng et al, 2013;Brequigny et al, 2013). In contrast, very few alcohol-blended combustion studies have been conducted in latest technology Direct Injection Spark-Ignition (DISI) engines that are more sensitive to fuel properties than PFI engines.…”

Combustion Characteristics and Cyclic Irregularity of an EFI Gasoline Engine Fueled with n-Butanol/gasoline Blends

“…By analysing the heat release of butanol/gasoline blends (hereafter called butanol blends), Yang et al [6] found that, without any modifications to the original engine, the ignition delay of butanol blends is longer than that of gasoline, while the peak value of IHRR of butanol blends is smaller. What's more, literatures [7][8][9] discovered that when the blend ratio of butanol is less than 20%, the engine power remains about the same, while CO and NO X emissions decrease.…”