Combustion characteristics of lemongrass (Cymbopogon flexuosus) oil in a partial premixed charge compression ignition engine

Alagumalai, Avinash

doi:10.1016/j.aej.2015.03.021

Cited by 65 publications

(19 citation statements)

References 19 publications

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“…The combustion pressure and heat release rate were averaged over 200 cycles of the engine running through the combustion analyzer. The heat release rate was calculated using the following formula [12,13,24,25]:…”

Section: Discussionmentioning

confidence: 99%

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Effects of Fuel Injection Pressure on Combustion and Emission Characteristics under Low Speed Conditions in a Diesel Engine Fueled with Palm Oil Biodiesel

Kim

Choi

2019

Energies

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In this study, the effect of injection pressure on combustion and emission characteristics was evaluated on a common rail direct injection diesel engine fueled with palm oil biodiesel. Recently, many studies have been conducted to utilize biodiesel produced from various sources to prevent environmental pollution and the depletion of petroleum resources. The oxygen content and high cetane number of biodiesel can reduce the production of exhaust pollutants by improving the combustion, but its high viscosity deteriorates the atomization of the injected fuel. Particularly at low engine speed conditions like idle, poor atomization and low airflow in the cylinder deteriorates the combustion efficiency. Increasing the fuel injection pressure is one of the effective methods to improve the atomization of biodiesel without mechanical modification of the current diesel engine. In this study, combustion characteristics and emission levels of pollutants were measured by varying the fuel injection pressure applying palm oil biodiesel. As a result, it was confirmed that increasing the injection pressure to apply palm oil biodiesel at low engine speed can reduce ignition delay and improve combustion efficiency so that nitrogen oxides (NOx) is increased but soot formation is reduced. Carbon monoxide (CO) and hydrocarbon (HC) are slightly reduced but these are increased again when using 100% palm oil biodiesel. The increased NOx due to increased injection pressure can be reduced by applying exhaust gas recirculation (EGR).

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Section: Discussionmentioning

confidence: 99%

“…The piston cylinder volume (V, m 3 ) can be calculated as a function of crank angle from the compression ratio, bore, stroke, and length of connecting the rod vis the sider-crank system. The volume of the cylinder (V, m 3 ) is given by Equation (2) as follows [12,24,25]:…”

Section: Discussionmentioning

confidence: 99%

Effects of Fuel Injection Pressure on Combustion and Emission Characteristics under Low Speed Conditions in a Diesel Engine Fueled with Palm Oil Biodiesel

Kim

Choi

2019

Energies

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“…Lemongrass oil has low heating value (36 MJ/kg) [6] and slightly low cetane number (45, 38) [6,7], thus needed to be blended with diesel in order to use in diesel engine. When compared to base diesel, lemongrass oil-diesel blends increased BTE and BSFC of the engine [8].…”

Section: Introductionmentioning

confidence: 99%

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

et al. 2018

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Essential oils are derived from not-fatty parts of plants and are mostly used in aromatherapy, as well as cosmetics and perfume production. The essential oils market is growing rapidly due to their claimed health benefits. However, because only therapeutic grade oil is required in the medicinal sector, there is a substantial low-value waste stream of essential oils that can be used in the transportation and agricultural sectors. This study investigated the influence of orange, eucalyptus, and tea tree oil on engine performance and combustion characteristics of a multi-cylinder compression ignition engine. Orange, eucalyptus, and tea tree oil were blended with diesel at 10% by volume. For benchmarking, neat diesel and 10% waste cooking biodiesel-diesel blend were also tested. The selected fuels were used to conduct engine test runs with a constant engine speed (1500 RPM (revolutions per minute)) at four loads. As the load increased, frictional power losses decreased for all of the fuel samples and thus mechanical efficiency increased. At higher loads (75% and 100%), only orange oil-diesel blends produced comparable power to diesel and waste cooking biodiesel-diesel blends. Fuel consumption (brake and indicated) for the essential oil-diesel blends was higher when compared to base diesel and waste cooking biodiesel-diesel blends. Thermal efficiency for the essential oil-diesel blends was comparable to base diesel and waste cooking biodiesel-diesel blends. At higher loads, blow-by was lower for essential oil blends as compared to base diesel and waste cooking biodiesel-diesel blends. At 50% and 100% load, peak pressure was lower for all of the essential oil-diesel blends when compared to base diesel and waste cooking biodiesel-diesel blends. From the heat release rate curve, the essential oil-diesel blends ignition delay times were longer because the oils have lower cetane values. Overall, the low-value streams of these essential oils were found to be suitable for use in diesel engines at 10% blends by agricultural producers of these oils.

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“…The fuel spraying type porous medium is a concept of making porous nozzles to inject diesel fuels. A new type of porous injector nozzle was reported and investigated experimentally by Reijinders et al [30]. Fuel spray interface with a porous medium is given in figure 3.…”

Section: Figure 2 the Porous Medium Ignition Processmentioning

confidence: 99%

Impacts on Nox Emission Control Measures to Achieve EURO VI Limits - A Review

Supramani¹,

Kumar²

2019

JESA

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The intention of this review study is to investigate the control measures of NOx emission. Even though the diesel engine sector plays a pivotal role in economic growth, it brings an unavoidable environmental deterioration. The current work reviews the effect of EGR, boost pressure variation, fuel modification, advanced engine combustion concepts, and after treatment processes for reducing NOx emission to EURO VI level. The outcomes of bio-diesel performance and other emission characteristics are too highlighted. In addition to this, specific attention is given to Porous Medium Combustion (PMC) technology adopted in diesel engines and a separate section is devoted. In order to facilitate a better understanding of PMC technology, simulation and experimental results of NOx emission are reported. Through this porous medium experimental study, it was found that NOx, HC and CO emissions were reduced significantly. Reducing the NOx and PM emissions might simultaneously increase the chance of usage of diesel and biodiesel blends fuelled CI engines in near future. The findings of this research work serve as best possible ways for achieving ultra-low NOx emission subjected to EURO VI norms level is suggested in future directions to give the reader insight and the track for the future investigation.

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Combustion characteristics of lemongrass (Cymbopogon flexuosus) oil in a partial premixed charge compression ignition engine

Cited by 65 publications

References 19 publications

Effects of Fuel Injection Pressure on Combustion and Emission Characteristics under Low Speed Conditions in a Diesel Engine Fueled with Palm Oil Biodiesel

Effects of Fuel Injection Pressure on Combustion and Emission Characteristics under Low Speed Conditions in a Diesel Engine Fueled with Palm Oil Biodiesel

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

Impacts on Nox Emission Control Measures to Achieve EURO VI Limits - A Review

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