Performance evaluation of Nannochloropsis oculate–carbon nanoparticle blend as fuel in compression ignition engine

Abstract

In this study, multiwalled carbon nanotubes (MWCNTs) were used as a property improvers for fuel obtained from Nannochloropsis oculate for application in a compression ignition engine. The engine's performance was monitored in accordance with its newly induced characteristics. The fixed biodiesel ratio was blended with different proportions of MWCNTs. The nanotubes were ultrasonicated with the biodiesel in different doses of 50,75, 100 and 150 ppm, respectively, and the resulting fuels were subjected to performance tests as compared with conventional diesel‐fuel in a Yanmar Model‐TF120M diesel engine. It was observed that cylinder pressure and heat release rates were higher under full load condition as compared with those obtained for the diesel fuel. Furthermore, the results compared favorably for both fuels in terms of combustion, emissions and engine performance. The brake thermal efficiency of the blended fuel improved by 2.72, 2.81, 3.07 and 2.24% for BC‐50, BC‐75, BC‐100 and BC‐150 as compared with that of diesel fuel. The release of CO2, NO x , hydrocarbons and carbon monoxide decreased in favor of the blends. From the analysis, a dosing level of 100 ppm MWCNTs in the biofuel is recommended for best engine performance and combustion, with optimal emission reduction. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

Investigating the emissions and performance of hydrogen enriched-biogas-Parinari polyandra biodiesel in a direct injection (DI) engine

“…The quantity of NO x emissions decreased in the following order of magnitude: (HE-B)0.75 (171 g/kWh) > D (100) ð149 g =kWhÞ > BeB 0.5 (112 g/kWh) > B (100) (111.5 g/ kWh) > B(HE-B)0.5 (111 g/kWh) > B(HE-B)1.0 (107 g/kWh) > B(HE-B)0.75 kg/h-fuel (81 g/kWh); similar results were found in the work of ref. [21].…”

“…Also, due to the high flame speed of H 2 , it was discovered that the ignition delay was shortened. According to G omez-Montoya et al [21], H 2 addition (i.e., 5e20% H 2 vol/vol of fuel) in a biogas-diesel fueled engine increases the BTE and in-cylinder pressure with a reduction in carbon monoxide emissions. Suzuki et al [22] investigated the performance of a multi-cylinder engine using H 2 and diesel mixed as fuel.…”

Complex analysis of combustion and emission parameters of bio‐renewable fuel mixtures in dual‐fuel mode

“…62 To obtain the required reactivity gradient, additives that increase the cetane number were mixed with the LRF and then injected directly into the combustion chamber as an HRF. Additives that improve the cetane number were used in an advanced combustion technology engine using a single-fuel strategy, namely di-tert-butyl peroxide (DTBP) [62][63][64][65][66] and 2-ethylhexyl nitrate (2-EHN). 39,63,67,68 Properties of the additives are summarized in Table 2.…”

The effect of biogas and dimethyl ether on the thermal characteristics of a dual‐fuel diesel engine: A numerical study

“…Various combustion technologies have been applied to diesel engines, including low‐temperature combustion, dual‐fuel combustion, and the use of alternative fuels with diesel, like bio‐diesel 5–11 …”

“…3,4 Various combustion technologies have been applied to diesel engines, including low-temperature combustion, dualfuel combustion, and the use of alternative fuels with diesel, like bio-diesel. [5][6][7][8][9][10][11] The use of dual-fuel engines is expected to provide a better way to regulate combustion than traditional diesel engines. The combustion attributes of the mixture of blended fuels and air are the process of mixing fuel and air, the vaporization of the fuel, and the Chemical reaction of each fuel.…”