Influence of 1-butanol and 1-pentanol addition to diesel fuel on exhaust and noise emissions under stationary and transient conditions

Tribological Performance of Biomass-Derived Bio-Alcohol and Bio-Ketone Fuels

“…As next-generation promising alternative fuels, some bio-alcohols and bio-ketones are produced from biomass-derived waste or lignocellulosic materials, such as agricultural wastes, forest residues, sewage and municipal wastes and used oils [6,7]. Their life cycle greenhouse gas emissions can be considerably lower than that of conventional fuels, depending on production [8,9].…”

“…The bio-alcohols and bio-ketones mentioned above are well defined in their engine combustion and emissions characteristics [6,7,14,24], but not in their tribological performance. The current work comprehensively investigates the effects of diesel blending with bio-alcohols (i.e., butanol, pentanol and cyclopentanol) and a bio-ketone (i.e., cyclopentanone) with different molecular structures (C 4 and C 5 ) and gasoline-diesel blends on the fuels' properties and tribological performance.…”

Evaluation of n-butanol as blending component in unmodified heavy-duty diesel engine

“…Regarding tailpipe emissions, a substantial decrease in the particulate emissions was reported owing to the additional oxygen carried by the fuel and higher volatility of n-butanol [17]; further, an increase in the THC emissions was also reported [160], [70]. It is important to note that the CO and NOX emissions do not exhibit a clear trend as the observations vary between studies [19], [161], [18]. Table 2.5 shows a detailed summary of the different studies found in the literature on the combustion, performance, and emissions of butanol-diesel blends in diesel engines and vehicles under stationary or transient conditions.…”

“…It has also been reported that the ignition delay is shortened in an environment with higher in-cylinder temperature (under different injection strategies [149], [150], [151] and with increasing engine load [152]). The peak HRR increases because more fuel is reacted during premixed combustion [153], [18] (owing to the additional oxygen from n-butanol, which promotes greater air-fuel mixing). Studies by Huang et al [71] and Yan et al [154] reported increases in the peak in-cylinder pressure, whereas studies by Nour et al [155] and Yursi et al [156] reported lowering of the peak in-cylinder pressure.…”

“…The growing interest in n-butanol as a blending component for fossil-based diesel and the increasing number of publications on n-butanol/ethanol are evidenced. Regarding the use of n-butanol-blended diesel fuel in CI engines, most studies in the literature have focused on single-cylinder and light-duty engines under limited operating conditions of load and speed [15], [16], and only few have acquired measurements over the entire driving cycle [17], [18]. Researchers observed a substantial decrease in the particle emissions owing to the additional oxygen carried by the fuel and higher volatility of n-butanol, whereas the total hydrocarbon (THC) emissions were reported to be increased.…”