Reactivity controlled compression ignition and low temperature combustion of Fischer-Tropsch Fuel Blended with n-butanol

Soloiu, Valentin; Gaubert, Remi; Moncada, Jose; Wiley, Justin T.; Williams, Johnnie; Harp, Spencer; Ilie, Marcel; Mothershed, David

doi:10.1016/j.renene.2018.09.047

Cited by 36 publications

(9 citation statements)

References 27 publications

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“…In this work, to evaluate the trend of the knock for the researched compression-ignition engine [76], the Ringing Intensity (RIN), also named as the ringing index, for each tested fuel sample at different engine loads was estimated using the following formula which was recommended by Soloiu et al [77,78]. RIN has been taken into consideration for the DI compression-ignition engine by Wei et al [79] even though this index has been completely implemented as the basic indicator to monitor the knock inclination for the homogenous charge compression-ignition engines.…”

Section: Methodology Of the Engine Testsmentioning

confidence: 99%

The industrial-grade hemp (Cannabis sativa L.) seed oil biodiesel application in a diesel engine: combustion, harmful pollutants, and performance characteristics

Yılbaşı

Yeşilyurt

Yaman

et al. 2022

Sci. Tech. Energ. Transition

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The core focus of the present investigation is regarding biodiesel production from industrial hemp seed oil applying single-stage homogenous catalyzed transesterification process obtaining high yield of methyl ester. The engine tests were carried out on a single-cylinder, four-stroke, water-cooled, unmodified diesel engine operating with hemp seed oil methyl ester as well as its blends with conventional diesel fuel. The experimental findings of the test fuels were compared with those from diesel. The results pointed out that the performance and combustion behaviors of biodiesel fuels are just about in line with those of diesel fuel propensity. The specific fuel consumption for 5% biodiesel blend (0.291 kg/kW h), 10% biodiesel blend (0.305 kg/kW h), and 20% biodiesel blend (0.312 kg/kW h) blends at full load was closer to diesel (0.275 kg/kW h). In the meantime, the thermal efficiency for biodiesel was found to be at the range of 15.98–24.97% and it was slightly lower than that of diesel (18.10–29.85%) at the working loads. On the other hand, the harmful pollutant characteristics of carbon monoxide, hydrocarbon, and smoke opacity for biodiesel and its blends were observed to be lower in comparison with diesel during the trials. However, the oxides of nitrogen emissions for biodiesel were monitored to be as 6.85–15.40 g/kW h which was remarkably higher than that of diesel (4.71–8.63 g/kW h). Besides that, the combustion behaviors of biodiesel and its blends with diesel showed much the same followed those of diesel. Namely, the duration of ignition delay of biodiesel–diesel blends was shorter than that of diesel fuel because of the higher cetane number specification of the methyl ester. The highest gas pressures inside the cylinder as well as the rates of the heat release of biodiesel including test fuels are lower in contrast to the diesel due to the shorter ignition delay. It could be concluded that the utilization of biodiesel produced from industrial hemp seed oil in the diesel engine up to 20% (by vol.) will decrease the consumption of diesel and environmental pollution, especially in developing countries.

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Section: Methodology Of the Engine Testsmentioning

confidence: 99%

The industrial-grade hemp (Cannabis sativa L.) seed oil biodiesel application in a diesel engine: combustion, harmful pollutants, and performance characteristics

Yılbaşı

Yeşilyurt

Yaman

et al. 2022

Sci. Tech. Energ. Transition

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“…Ignition delay or delay time is the time between the beginning of fuel injection into the combustion chamber and the beginning of combustion [34,[54][55][56][57]. This period of time in the diesel engine exerts a great influence on both engine design and performance.…”

Section: Analysis Of Ignition Delaymentioning

confidence: 99%

“…This difficulty has made the indirect method a little less accurate. Some researchers have suggested methods for evaluating the delay time by heat release from pressure-time data [41,56,62]. Another is suggested using the log P-log V curve.…”

Section: Analysis Of Ignition Delaymentioning

confidence: 99%

Study of effects of ignition improvers on ethanol compression ignition in the rapid compression machine

Sánchez

Martins

Braga

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The world recognizes that the main source of energy used in transportation is diesel fuel because it is more economical and is also more efficient. For this reason, various sectors of transport and fuel production are developing new technologies aiming at the replacement of traditional fossil fuels by other renewable sources. In the current market, it is possible to find systems that run on blends of diesel and other renewable fuels and test systems that run on mixtures of ethanol and some other substance to reduce auto-ignition. To be able to use ethanol in compression ignition (CI) engines where diesel fuel is typically used, the poor flammability of ethanol under compression ignition conditions is the major problem to be overcome. The techniques used in trials with CI engines to correct this problem are preheating the air in the intake manifold, increasing the compression ratio or the addition of an ignition improver for ethanol. In this study, different tests were carried out in a rapid compression machine using ignition improvers derived from polyethylene glycol. Tests were conducted for different instants for the start of injection of the mixtures and different compression ratios.

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“…Due to stringent emissions regulations, low temperature combustion is more popular than conventional combustion among engine researchers [11]. In Dual fuel mode LTC can be achieved as the LTC requires 2 different reactivity fuels.…”

Section: Introductionmentioning

confidence: 99%

Optimization of critical angle, distance and flow rate of secondary fuel injection in DI diesel engine using computational fluid dynamics

Sonachalam

Manieniyan

2021

SN Appl. Sci.

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This study presents the optimization of the intake manifold and the optimized flow rate of the acetylene gas which acts as a low reactivity fuel to achieve the superior performance and emission characteristics used in the Reactivity controlled compression ignition (RCCI) engine. Intake manifold is one of the engine components which are an important factor in determining the quality of combustion. A very recent evolution of the RCCI engine using the low temperature combustion technique requires a low reactivity fuel which is injected through the secondary fuel injector. The secondary fuel injector must be designed and optimized to allow the acetylene gas to maximize the engine performance and the amount of acetylene gas in liters per minute required for better combustion. If the secondary fuel injector is mounted apart from the critical point, then the performance of the RCCI engine may be poor and also if the acetylene gas is not supplied properly, there is a risk of poor combustion and also if the acetylene gas is supplied excessively, there is a risk of knocking along with the backfire due to the excess fuel charge accumulation during the combustion process. Physical testing of the secondary fuel injector in the intake manifold with different angles, distance and flow rate of supply of acetylene gas is time and cost consuming process. To mitigate this issue optimization is done through computational fluid dynamics principles comes in handy to minimize time and money. In our study, ANSYS-FLUENT software is used for simulation purposes. Optimization of acetylene gas injector distance is carried out by analyzing the pressure contours at the entrance of the combustion chamber. The optimized flow rate of acetylene gas and the injector inclination is found by analyzing the flow contours of turbulent kinetic energy and turbulent dissipation rate.

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Reactivity controlled compression ignition and low temperature combustion of Fischer-Tropsch Fuel Blended with n-butanol

Cited by 36 publications

References 27 publications

The industrial-grade hemp (Cannabis sativa L.) seed oil biodiesel application in a diesel engine: combustion, harmful pollutants, and performance characteristics

The industrial-grade hemp (Cannabis sativa L.) seed oil biodiesel application in a diesel engine: combustion, harmful pollutants, and performance characteristics

Study of effects of ignition improvers on ethanol compression ignition in the rapid compression machine

Optimization of critical angle, distance and flow rate of secondary fuel injection in DI diesel engine using computational fluid dynamics

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