Performance and Emission Characteristics of a CRDI Diesel Engine Fuelled by SiO_(2) Nanoparticle-Waste Fat Biodiesel Blends

This study investigates the use of waste fat biodiesel(WFB)from the leather industry as a substitute for diesel fuel.Specifically,it examines the diesel engine performance of WFB,a blend of WFB and diesel(B50),and different blends of WFB and silicon dioxide(SiO_(2))nanoparticles(B50SiO_(2)40,B50SiO_(2)80,and B50SiO_(2)120μg/g).The results indicate that the B50SiO_(2)120 blend increases brake thermal efficiency by 10.03%compared to pure biodiesel but falls 1.93%short of neat diesel.Furthermore,the B50SiO_(2)120 mixture reduces smoke,hydrocarbon,and carbon monoxide emissions by 31.87%,34.14%,and 43.97%respectively,compared to diesel.However,the B50SiO_(2)120 blend shows a 4.91%increase in nitrogen oxide emissions compared to diesel.

不可食用生物柴油在船用柴油发动机中作为一种环保和可持续的替代燃料在印度发展的潜力

This article explores the possibilities of inedible biodiesel as a viable and environmentally friendly substitute fuel for marine diesel engines in India.This article encompasses on various crucial elements,including engine compatibility,biodiesel blends,fuel quality,emissions reduction,regulatory compliance,cost analysis,environmental advantages,and research and development.Implementing biodiesel in maritime operations within India presents favourable opportunities for mitigating carbon emissions,improving air quality,bolstering energy security,promoting sustainable agriculture,and harmonizing with international environmental objectives.Nevertheless,the effective incorporation of biodiesel necessitates a meticulous examination of multiple variables and an all-encompassing methodology that involves formulating policies,investment in infrastructure,research and development,and collaboration among relevant parties.Adopting biodiesel in India’s maritime sector offers a promising prospect for substantially contributing to sustainability and environmental stewardship.

Emission and performance analysis of a diesel engine burning cashew nut shell oil bio diesel mixed with hexanol

In this study, the effect of doping hexanol into biodiesel which is from neat cashew nut shell biodiesel oil on the emissions and the performance characteristics was studied in a constant speed diesel engine. The main purpose of this work is to reduce various emissions and also to improve the performance of the diesel engine when fueled with blends of hexanol and neat cashew nut shell biodiesel. Cashew nut shell oil is not edible, and hence it can be used as a viable alternative to diesel.Cashew nut shell biodiesel is prepared by conventional transesterification. Hexanol with 99.2% purity was employed as an oxygenated additive. Experimental studies were conducted by fueling diesel as a baseline and by fueling hexanol and neat cashew nut shell biodiesel mixture. A fuel comprising 10%（by volume） of hexanol and 90%（by volume） neat cashew nut shell biodiesel was referred to as CNSBD900 H100 and fuel comprising 20%（by volume） of hexanol and 80%（by volume）of neat cashew nut shell biodiesel was referred to as CNSBD800 H200. This study also investigated the possibility of using pure biofuel in an unmodified naturally aspirated diesel engine. The outcome of this study showed that adding hexanol at10% and 20%（by volume） to cashew nut shell biodiesel results in a reduction in emissions. In addition, a significant improvement in brake thermal efficiency and reduction in brake-specific fuel consumptions were achieved. Hence, it could be concluded that hexanol could be a viable and promising additive for improving the drawbacks of biodiesel when it was used to fuel an unmodified diesel engine.

Experimental assessment of performance and exhaust emission characteristics of a diesel engine fuelled with Punnai biodiesel/butanol fuel blends

This work examines the effect of butanol as an oxygenated additive to lower carbon monoxide,smoke,nitrogen oxide and hydrocarbon emissions and to improve the performance aspects of Calophyllum inophyllum(Punnai)biodiesel.Singlecylinder,oil-cooled compression ignition engines are employed in this work.Neat Punnai biodiesel(P100)is blended with butanol at 10%and 20%by volume and labelled as B10 P90 and B20 P80,respectively.Methanol and alkaline catalyst(KOH)were used for the transesterification process for biodiesel production.The transesterification technique yielded 88%biodiesel from raw Punnai oil.Engine tests resulted in lower CO,smoke,NO_x and HC emissions when fuelled with both butanol blends when compared to P100.In addition,BSFC(brake-specific fuel consumption)reduced and BTE(brake thermal effciency)increased with the inclusion of butanol blends(B10 and B20)to neat Punnai biodiesel.

Emission and performance study emulsi ed orange peel oil biodiesel in an aspirated research engine

This study paves the way on reducing smoke emission and NO_x emissions of research diesel engine by detailing the e ect of water addition in biodiesel. Fuel samples were prepared with di erent concentrations of water in orange peel oil biodiesel(94% waste orange peel oil biodiesel + 4% water + 2% Span 80(WOPOBDE1) and 90% waste orange peel oil biodiesel + 8% water + 2% Span 80(WOPOBDE2). Span 80 was employed as a nonionic surfactant, which emulsifies water in biodiesel. Experimental results revealed that the nitrogen oxides and smoke emission of orange peel oil biodiesel emulsion were reduced by 11%–19% and 3%–21%, respectively, compared to that of neat orange peel oil biodiesel(WOPOBD). In addition, the introduction of orange peel oil–water emulsions in the diesel engine considerably reduced the emissions of unburned hydrocarbons and carbon monoxide. The overall hydrocarbon emission of WOPOBDE2 was 12.2% lower than that of WOPOBD and 16.3% lower than that of diesel. The overall CO emission of WOPOBDE2 was 17% lower than that of base fuel(WOPOBD) and 21.8% lower than that of diesel. Experimental results revealed that modified fuel had higher brake thermal e ciency and lower brake specific fuel consumption than that of base fuel at all engine brake power levels.

Detailed study on the effect of different ignition enhancers in the binary blends of diesel/biodiesel as a possible substitute for unaltered compression ignition engine

This study examines the impact of the oxygenated additives namely DTBP(Di-Tetra-Butyl-Phenol) and 1-Pentadecanol(1-DEC) on emissions,combustion and performance patterns of Karanja biodiesel/diesel blends.Two additives were selected as ignition improver owing to their improved physicochemical properties.The additives were mixed at 10% volume with the equal blends of diesel and biodiesel.Experimental results revealed that by adding additives and biodiesel to diesel found no phase separation.HRR and peak pressure were highest for diesel and least for KBD/D blends.However,blending the additives enhanced its HRR and peak pressure.Addition of additives lowered the harmful emissions significantly with a slight increase in NO emissions to the KBD/D blends.In addition,a noteworthy increase in performance aspects was observed for KBD/D blends by adding DTBP and 1-Pentadecanol.

Emissions analysis on second generation biodiesel

This work investigates the effect of adding pentanol with biodiesel derived from cashew nut shell on its emissions characteristics is conducted in stationery diesel engine. The main purpose of this work is intended to reduce the emissions by fuelling biodiesel derived from cashew nut shell and the pentanol blends. Cashew nut shell biodiesel is prepared by transesterification process. Oxygenated additive used in the work is Pentanol. The experiment is con-ducted using four test fuels such-as, biodiesel derived from cashew nut shell （CNSBD）, a fuel containing 90% cashew nut shell biodiesel and 10% pentanol （CNSBD90P 10）, a fuel containing 80% cashew nut shell biodiesel and 20% pentanol （CNSBDSOP20） and neat diesel. Experimental work concluded that by adding 10% of pentanol to cashew nut shell biodiesel 10.1%, 2.6%, 5.1% and 2.1%reduction in CO, HC, NOx and Smoke emissions were observed respectively. Further by fueling with these blends, no modifications in engines were required.