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Author

Mahmoud S. Waly

Bio: Mahmoud S. Waly is an academic researcher from Banha University. The author has contributed to research in topics: Diesel fuel & Materials science. The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the authors used n-octanol and diethyl ether as cosolvents and ignition improvers to improve the usability of methanol in diesel engines.

50 citations

Journal ArticleDOI
TL;DR: In this paper , the applicability of methanol in CI engines utilizing n-octanol, diethyl ether (DEE), and different nanoparticle additives (at a concentration of 50 ppm), mainly aluminum oxide, titanium oxide, multiwalled carbon nanotube, graphene oxide, and graphene nanoplatelets as cosolvents and ignition improvers was investigated.

9 citations

Journal ArticleDOI
TL;DR: In this paper , the effects of adding N-doped MWCNTs into diesel fuel for a single-cylinder CI engine working at a rated speed of 1500 rpm and different loads were studied.
Abstract: Nanoparticles are considered promising additives to diesel fuel and significantly affect engine performance and exhaust emission levels. Nitrogen-doped multiwalled carbon nanotubes (N-doped MWCNTs) are one of the effective catalysts owing to their promising properties, which have recently increased their usability in many applications. These features make them good candidates as a catalyst to enhance diesel engine performance. The effects of adding N-doped MWCNTs into diesel fuel for a single-cylinder CI engine working at a rated speed of 1500 rpm and different loads were studied. Four doses of N-doped MWCNTs were added to diesel fuel using ultrasonic dispersion. Multiwalled carbon nanotubes (MWCNTs) were used as reference additives to compare their results with those obtained by N-doped MWCNTs. The results illustrated that most blends of N-doped MWCNTs were preferred in combustion behavior, engine performance, and exhaust emission analysis with respect to diesel and MWCNTs blends. Thus, there was a significant increase in the in-cylinder pressure and heat release rate compared to pure diesel. Also, the brake thermal efficiency was increased, and the brake specific fuel consumption was reduced compared to diesel. For all N-doped MWCNTs blends, there were remarkable reductions in NOx, soot, and CO formations, and it is mainly preferred over MWCNTs/diesel blends in exhaust emissions reduction.

3 citations

Journal ArticleDOI
TL;DR: In this paper , the applicability of methanol in CI engines utilizing n-decanol as cosolvents was investigated, and the results showed that the ndecanol was utilized as a cosolvent.
Abstract: Abstract This research endeavored to boost the applicability of methanol in CI engines utilizing n-decanol as cosolvents. The work was split into binary phases. Firstly, the stabilities of pure methanol ( M100 ) and hydrous-methanol ( MH10 ), with diesel as a reference fuel, were examined applying various temperatures: 10 °C, 20 °C, and 30 °C. The findings showed that the M100 -diesel and MH10 -diesel combinations were unstable. Thus, n-decanol was utilized as a cosolvent. Following by the engine combustion and emissions characteristics were evaluated by manipulating three proportions of M100-diesel mixtures with n-decanol. Three mixtures comprised of 5, 10, and 15% M100 with 20% n-decanol, which are denoted as M5, M10, and M15, correspondingly. These combinations were assessed via thermogravimetric assessment, and their physicochemical properties were assessed corresponding to the ASTM. The maximum in-cylinder pressure, heat release rate, and pressure rise rate diminished by 10, 11, and 10%, respectively, for the M100/diesel/n-decanol combinations compared with the diesel oil. The brake thermal efficiency lowered by 10%, whereas the brake specific fuel consumption enlarged by 10% for the combinations compared with the diesel. NO x and smoke opacity levels diminished by about 30 and 50%, respectively, whereas the CO and UHC enlarged by about 50 and 60% for the blends compared with the diesel oil.

1 citations


Cited by
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Journal ArticleDOI
01 Sep 2022-Fuel
TL;DR: In this article , the performance and emission characteristics of the premixed charge compression ignition (PCCI) engine operated with induction of ethanol in the inlet manifold and direct injection of multi-walled carbon nanotube (MWCNT)-blended Tamanu methyl ester (TME) at various proportions such as 10, 40, 70, and 100 ppm in comparison with the conventional CI engine fueled with diesel and TME.

28 citations

Journal ArticleDOI
01 Jan 2022-Energy
TL;DR: In this paper, the suitability of tri-fuel blend (diesel, ethanol and di-butyl ether) prepared in various proportions was reported, which revealed better fuel economy and significant reduction in NOx and smoke emissions.

21 citations

Journal ArticleDOI
01 Jan 2022-Energy
TL;DR: In this article , the suitability of tri-fuel blend (diesel, ethanol and di-butyl ether) prepared in various proportions was reported, which revealed better fuel economy and significant reduction in NOx and smoke emissions.

21 citations

Journal ArticleDOI
15 Jul 2022-Energies
TL;DR: In this article , eight different concentrations of diesel, waste oil derived biodiesel (WOB), and 1-pentanol (P) ternary mixtures were determined by the design of experimental method (DOE).
Abstract: Higher alcohols can be included as a third component in biodiesel-diesel mixtures to improve fuel properties and reduce emissions. Determining the optimum concentrations of these fuels according to the purpose of engine use is important both environmentally and economically. In this study, eight different concentrations of diesel (D), waste oil derived biodiesel (WOB), and 1-pentanol (P) ternary mixtures were determined by the design of experimental method (DOE). In order to determine the engine performance and exhaust emission parameters of these fuels, they were tested on a diesel engine with a constant load of 6 kW and a constant engine speed of 1800 rpm. Using the test results obtained, a full quadratic mathematical model with a 95% confidence level was created using the Response Surface Method (RSM) to predict five different output parameters (BSFC, BTE, CO, HC, and NOx) according to the fuel mixture ratios. The R2 accuracy values of the outputs were found at the reliability level. According to the criteria that BTE will be maximum and BSFC, CO, HC, and NOx emissions will be minimum, the optimization determined that the fuel mixture 79.09% D-8.33% WOB-12.58% P concentration (DWOBPopt) will produce the desired result. A low prediction error was obtained with the confirmation test. As a result, it is concluded that the optimized fuel can be an alternative to the commonly accepted B7 blend and can be used safely in diesel engines.

15 citations

Journal ArticleDOI
TL;DR: In this article , the authors investigated the impact of the nature of hydrocarbon fraction blended with ethyl alcohol impurity concentrate on the final characterization of E85 fuel and, in particular, on its phase stability and Reid vapor pressure.

14 citations