Potential for Reduction of Exhaust Emissions in a Common-Rail Direct-Injection Diesel Engine by Fueling with Fischer–Tropsch Diesel Fuel Synthesized from Coal

Chen, Song; Gong, Guohong; Song, Jinou; Lv, Gang; Cao, Xiaofeng; Liu, Lidong; Pei, Yiqiang

doi:10.1021/ef201378r

Cited by 22 publications

(6 citation statements)

References 27 publications

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“…F-T diesel is synthesized via the indirect liquefaction of coal using Fischer-Tropsch (F-T) technology [9]. Due to the addition of the coal gasification stage in the production process of F-T diesel, there is a significant difference between coal-to-oil and gas-to-liquid alternatives, including fuel composition, H/C ratio, distillation temperature, and viscosity, all of which play an important role in the formation of exhaust emissions [10]. The price equivalent of F-T diesel from coal is lower than the average crude oil price for the year of study in [11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Pilot Injection Strategy on Performance of Diesel Engine under Ethanol/F-T Diesel Dual-Fuel Combustion Mode

Yang,

Chen,

Liu

et al. 2023

Processes

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To reduce emissions and save energy, alternative fuel and dual-fuel mode have been widely applied in the field of diesel engines. The pilot injection has potential to reduce engine vibration noise and pollutant emissions. The effects of a diesel fuel pilot injection strategy on the performance of an ethanol/F-T diesel dual-fuel engine were experimentally investigated on a four-cylinder four-stroke common rail diesel engine modified with an ethanol injection system. The results indicate that the variation in the combustion characteristic parameters with pilot injection timing is nonlinear and the difference is small, while soot, NOx, and CO tend to decrease, with an increase in pilot injection timing. With the increase in pilot injection amount, pmax, combustion duration, CO and soot increased; pmax phase and CA50 were closer to TDC; HRRmax and the ignition delay period decreased. The BSFC tends to increase with the increase in pilot injection timing and the increase in pilot injection amount, while the BTE shows the opposite trend. The value and the variation range of COVpmax are small. The effect of the pilot injection amount on ethanol/F-T diesel dual-fuel engine is more significant. The research presented in this paper can provide reference directions for the formulation of a fuel injection strategy of ethanol/F-T diesel dual-fuel combustion mode to reduce NOx without worsening the combustion process and presenting an insufficient fuel economy.

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Section: Introductionmentioning

confidence: 99%

“…Moreover, F-T diesel can obtain lower NO x , CO, and soot emissions [5,8,13]. In addition, F-T diesel fuel can be used in conventional diesel engines without any modification, with negligible or minimal engine efficiency gains [10]. F-T diesel can also be blended with other fuels to further improve engine performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pilot Injection Strategy on Performance of Diesel Engine under Ethanol/F-T Diesel Dual-Fuel Combustion Mode

Yang,

Chen,

Liu

et al. 2023

Processes

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“…30 The CO, HC, NO X , and PM emissions present a decreasing trend as the DICL ratio in the fuel is increased. 31…”

Section: Introductionmentioning

confidence: 99%

“…30 The CO, HC, NO X , and PM emissions present a decreasing trend as the DICL ratio in the fuel is increased. 31 As mentioned above, the combustion and emission characteristics of DDCL and DICL has been investigated separately. However, comparative studies on DDCL and DICL is rarely conducted, and the research of DDCL and DICL blends is even less.…”

Section: Introductionmentioning

confidence: 99%

Effects of diesel from direct and indirect coal liquefaction on combustion and emissions in a six-cylinder turbocharged diesel engine

Zhang

Tang

Qi-bin

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The aim of this study is to evaluate the effects of diesel from direct coal liquefaction (DDCL) and diesel from indirect coal liquefaction (DICL) on combustion and emissions. A six-cylinder turbocharged diesel engine fueled with DDCL, DICL, petroleum diesel (PD), 58% DDCL, and 42% DICL blended by volume (BD58) is used. The experiments are carried out at 1400 and 2300rpm engine speeds and various engine loads (10%, 25%, 50%, 75%, and 90% of the full-load). The results show that the brake thermal efficiency (BTE) of PD was higher than that of CTL (the maximum difference was 2%) at medium and high loads. At 10% load of 1400 rpm, the CO, HC and formaldehyde emissions of DDCL are 88.9%, 44.3% and 26.5% higher than those of PD respectively, and the CO, HC, and formaldehyde emissions of DICL are 30.1%, 15.3%, and 15.2% lower than those of PD. The differences among four fuels decrease rapidly with the increase of load. The NOX emissions of PD are the highest due to high nitrogen content (102.3 μg/g) and low hydrogen-carbon (H/C) ratio. The fuel with higher cetane number has less formaldehyde emission at low loads, while the fuel with lower H/C has less formaldehyde emission at high loads. The particle size distribution shows a bimodal shape at different loads and the peak particle size of accumulation mode and nucleation mode all increases with the increase of load. The particulate emission of different fuels from high to low is the order of PD > DDCL > BD58 > DICL. In addition, the emissions of polycyclic aromatic hydrocarbons (PAHs) and toxicity equivalent (TE) of PD are highest at all loads. The proportion of soluble organic fractions (SOF) from DDCL, DICL, and BD58 is higher than that of PD.

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“…Kim et al analyzed the production of Fischer-Tropsch CTL fuel and its potential as an alternative automotive fuel [19]. Song et al discussed the potential of CTL for reducing exhaust emissions in the European steady state cycle (ESC) test mode [20]. The results indicated that the emissions decreased compared with diesel fuel, while there was no obvious difference in the total particle number.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Injection Parameters on the Performance of a Diesel Engine with Fischer–Tropsch Fuel Synthesized from Coal

et al. 2018

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Experimental research was conducted on a turbo-charged, inter-cooling and common-rail diesel engine with Fischer–Tropsch fuel synthesized from Coal-to-liquid (CTL), in order to investigate the influence of different injection parameters on the combustion, emissions and efficiency characteristics of the engine. The results showed that the ignition point was advanced, the in-cylinder pressure and heat release rate increased as the injection timing advanced and the injection pressure increased. By comparing the peak in-cylinder pressure of 100 cycles for one sample, it was found that the coefficient variation (COV) remained under 2% throughout the tests and the combustion process remained stable. NOx emissions decreased with delayed injection timing and lower injection pressure. In contrast to NOXNOx emissions, soot emissions were almost zero when the injection pressure was up to 143.5 MPa. The indicated thermal efficiency (ITE) showed no obvious change with different injection parameters, and remained under 40% in all the tests.

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Potential for Reduction of Exhaust Emissions in a Common-Rail Direct-Injection Diesel Engine by Fueling with Fischer–Tropsch Diesel Fuel Synthesized from Coal

Cited by 22 publications

References 27 publications

Effect of Pilot Injection Strategy on Performance of Diesel Engine under Ethanol/F-T Diesel Dual-Fuel Combustion Mode

Effect of Pilot Injection Strategy on Performance of Diesel Engine under Ethanol/F-T Diesel Dual-Fuel Combustion Mode

Effects of diesel from direct and indirect coal liquefaction on combustion and emissions in a six-cylinder turbocharged diesel engine

Experimental Study of Injection Parameters on the Performance of a Diesel Engine with Fischer–Tropsch Fuel Synthesized from Coal

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