Assessment on the consequences of injection timing and injection pressure on combustion characteristics of sustainable biodiesel fuelled engine

Shameer, P. Mohamed; Ramesh, K.

doi:10.1016/j.rser.2017.07.048

Cited by 111 publications

(31 citation statements)

References 96 publications

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“…Biodiesel, which is prepared by the transesterification of vegetable oils or animal fats, is a green alternative energy for diesel engines. Because the raw materials of biodiesel do not contain any sulfur, aromatic compounds, or other harmful substances, diesel engines fueled with biodiesel can relieve air pollution .…”

Section: Introductionmentioning

confidence: 99%

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Zhong

Liu

2019

Env Prog and Sustain Energy

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In this article, the particulates formed by the combustion of diesel, 20% and 50% biodiesel blended in diesel (denoted as B20 and B50, respectively), and biodiesel were collected. The micromorphologies of the particulates were observed by scanning electron microscopy. Furthermore, the small‐angle X‐ray scattering technique was used to analyze the gyration radius, size distribution, interfacial characteristics, and fractal characteristics of the particulates. The results show that the size of the particulates formed by combustion of the fuels was concentrated between 10 and 35 nm and obeyed a Gaussian distribution. Moreover, the addition of biodiesel to diesel led to smaller particulate sizes for the biodiesel/diesel blend: the mean radii of the particulates for diesel, B20, B50, and biodiesel were 11.5 nm, 10.8 nm, 10.2 nm, and 9.7 nm, respectively. In addition, an interfacial layer was observed between the particulates, and the average interfacial thickness of the particulates was between 1.54 and 1.89 nm. The mass fractal dimension of the particulates was between 0.2 and 2.5, and the surface fractal dimension of the particulates was between 2.1 and 2.9. The addition of biodiesel to diesel resulted in a more compact particulate structure and the rougher surface. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Section: Introductionmentioning

confidence: 99%

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Zhong

Liu

2019

Env Prog and Sustain Energy

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“…Ignition delay is shortened with increase in pressure [13]. Advancement in injection timing and higher injection pressure lead to better combustion [14]. From the above figure it is clear that at 550°C on increasing the air pressure, although values of ignition delay are marginally decreases at all injection pressures but the variation in the values of ignition delay obtained from both sprays is very less or we can say that at higher temperatures the effect of different sprays is diluted.…”

Section: Hollow Cone Spraymentioning

confidence: 80%

Improvement in Ignition Delay Characteristics of Diesel Engine Combustion by Varying Combustion Chamber Air Pressure

Gupta*,

Khan

2019

IJITEE

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Complete and clean combustion is always desirable for better performance of engine and less emissions. An experimental work is carried in constant volume combustion chamber for getting conditions like diesel engine combustion to study the ignition delay characteristics of diesel engine combustion by varying combustion chamber air pressure. In this experimental work, air pressure of combustion chamber varied from 10 to 25 bar, hot surface temperature inside the combustion chamber varied from 350°C to 550°C and fuel injection pressures varied from 100 to 200 bar for hollow cone spray and solid cone spray . For this work a set-up is made in which the flame detection is done by digital storage oscilloscope using an optical method. The findings of the work suggests that combustion chamber air pressure and injection pressure are significantly varies the values of ignition delay at a particular hot surface temperature. It is also find that on increasing the values of combustion chamber air pressure and injection pressure, ignition delay values are decreases although the variation in ignition delay is less at higher injection pressure and combustion chamber air pressure.

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“…The variation of the ignition delay period was more significant at 5.5-6.5 bar IMEP during combustion of conventional diesel and biogas at the valve. The higher ignition delay indicated that more diffusion of the direct-injected fuel occurred at these loads and the least difference in the ignition delay among the test fuels could be an influence of fuel quality or direct injection pressure [43]. Figure 12d further revealed that the traditional premixed approach demonstrated the highest ignition delay period at all the load condition, though decreased as the load increased.…”

Section: • Burning and Ignition Delay Periodsmentioning

confidence: 90%

An Experimental Investigation on the Influence of Port Injection at Valve on Combustion and Emission Characteristics of B5/Biogas RCCI Engine

et al. 2020

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High unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions, on account of the premixed air-fuel mixture entering the crevices and pre-mature combustion, are setbacks to reactivity-controlled compression ignition (RCCI) combustion at a low load. The influence of direct-injected B5 and port injection of biogas at the intake valve was, experimentally, examined in the RCCI mode. The port injection at the valve was to elevate the temperature at low load and eliminate premixing for reduced pre-mature combustion and fuel entering the crevices. An advanced injection timing of 21° crank angle before top dead centre and fraction of 50% each of the fuels, were maintained at speeds of 1600, 1800 and 2000 rpm and varied the load from 4.5 to 6.5 bar indicated mean effective pressure (IMEP). The result shows slow combustion as the load increases with the highest indicated thermal efficiency of 36.33% at 5.5 bar IMEP. The carbon dioxide and nitrogen oxides emissions increased, but UHC emission decreased, significantly, as the load increases. However, CO emission rose from 4.5 to 5.5 bar IMEP, then reduced as the load increases. The use of these fuels and biogas injection at the valve were capable of averagely reducing the persistent challenge of the CO and UHC emissions, by 20.33% and 10% respectively, compared to the conventional premixed mode.

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Assessment on the consequences of injection timing and injection pressure on combustion characteristics of sustainable biodiesel fuelled engine

Cited by 111 publications

References 96 publications

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Study on the Structure Characteristics of Diesel Engine Particulates Based on Small‐Angle X‐Ray Scattering

Improvement in Ignition Delay Characteristics of Diesel Engine Combustion by Varying Combustion Chamber Air Pressure

An Experimental Investigation on the Influence of Port Injection at Valve on Combustion and Emission Characteristics of B5/Biogas RCCI Engine

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