Potential of n-butanol/diesel blends for CI engines under post injection strategy and different EGR rates conditions

Zhou, Xiaorong; Qian, Weiwei; Pan, Mingzhang; Huang, Rong Fung; Xu, Leilei; Yin, Jichong

doi:10.1016/j.enconman.2019.112329

Cited by 56 publications

(37 citation statements)

References 64 publications

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“…Despite that, BSFC slightly improves up to α post :~15 • CA for SoI: 30 • CA as the amount of fuel burned in the compression stroke reduces. As it can be inferred from the Figure 15b, increasing α 2IVO and therefore RGF deteriorates BSFC due to the reduced volumetric efficiency and O 2 concentration [2]. In addition, the rate of increase in BSFC due to α post decreases slightly for the greater α 2IVO angles.…”

Section: Emission and Performance Analysismentioning

confidence: 77%

“…Energies 2021, 14, x FOR PEER REVIEW 15 o the Figure 15b, increasing α 2IVO and therefore RGF deteriorates BSFC due to the redu volumetric efficiency and O 2 concentration [2]. In addition, the rate of increase in BS due to α post decreases slightly for the greater α 2IVO angles.…”

Section: Emission and Performance Analysismentioning

confidence: 89%

“…Figure 9 illustrates the effect of α 2IVO on ICP, ICT and HRR patterns for SoI: −15 • CA, PFQ: 7.5% and α post : 22 • CA. With the addition of residual gases to the intake charge, the first peak of HRR and consequently the maximum ICP decreases as a result of decreasing volumetric efficiency, O 2 concentration and increasing thermal capacity [2]. This effect appears to be higher as α 2IVO or iEGR increases [34].…”

Section: Combustion Analysismentioning

confidence: 99%

“…Due to the strict pollutant emission regulations, diesel engine development studies can be carried out limitedly because of the trade-off relationships between the soot and NO x emissions which are the inevitable results of the compression-ignition combustion mechanism [1,2]. Although advanced exhaust aftertreatment systems are effective and quite durable, they still impose extra packaging problems and costs for the overall powertrain system.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

Akgül

Özener

Büyük³

et al. 2020

Energies

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This work presents a numerical study that investigates the optimum post-injection strategy and internal exhaust gas recirculation (iEGR) application with intake valve re-opening (2IVO) aiming to optimize the brake specific nitric oxide (bsNO) and brake specific soot (bsSoot) trade-off with reasonable brake specific fuel consumption (BSFC) via 1D engine cycle simulation. For model validation, single and post-injection test results obtained from a heavy-duty single cylinder diesel research engine were used. Then, the model was modified for 2IVO application. Following the simulations performed based on Latin hypercube DoE; BSFC, bsNO and bsSoot response surfaces trained by feedforward neural network were generated as a function of the injection (start of main injection, post-injection quantity, post-injection dwell time) and iEGR (2IVO dwell) parameters. After examining the effect of each parameter on pollutant emission and engine performance, multi-objective pareto optimization was performed to obtain pareto optimum solutions in the BSFC-bsNO-bsSoot space for 8.47 bar brake mean effective pressure (BMEP) load and 1500 rpm speed condition. The results show that iEGR and post-injection can significantly reduce NO and soot emissions, respectively. The soot oxidation capability of post-injection comes out only if it is not too close to the main injection and its efficiency and effective timing are substantially affected by iEGR rate and main injection timing. It could also be inferred that by the combination of iEGR and post-injection, NO and soot could be reduced simultaneously with a reasonable increase in BSFC if start of main injection is phased properly.

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Section: Emission and Performance Analysismentioning

confidence: 77%

Section: Emission and Performance Analysismentioning

confidence: 89%

Section: Combustion Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

Akgül

Özener

Büyük³

et al. 2020

Energies

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“…Recently, it was reported as a potential fuel for spark ignition engines or as an additive to diesel fuels. 26,27 Although cultivation of M. pulcherrima on depolymerized lignocelluloses provides an advantage of agricultural wastes recycling, the need of high amount of organic acids and enzymes for the pretreatment increases the overall production cost. 28 It is estimated that 30% to 50% of food produced globally, equivalent to 1 to 2 billion tonnes, are not used for human consumption, 29 and up to 600 million tonnes of it potentially collectable in urban areas.…”

Section: Introductionmentioning

confidence: 99%

A sustainable approach for bioconversion of food and lignocellulosic wastes into liquid biofuel using a new Metschnikowia pulcherrima isolate

et al. 2020

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Summary In the present study, valorization of food and lignocellulosic wastes into biodiesel and 2‐phenylethanol using Metchinikowia pulcherrima isolated from rotten food wastes was evaluated. At the optimum pH of 5.5, food waste hydrolysate (FWH) showed 74.1% higher dry weight than the corresponding synthetic medium. Rice straw (RS) and softwood sawdust (WWA) were used as additional carbon sources to increase the C:N ratio of FWH. WWA enhanced the biomass production by 23.3% and 55.9% over the corresponding RS and FWH, respectively; while RS enhanced lipid accumulation. Due to enhancement of growth, 75 g WWA showed the maximum recorded lipid productivity of 2.49 g L−1 d−1. Interestingly, both hexoses and pentoses were effectively metabolized. Regarding fatty acid profile of M. pulcherrima, RS‐ and WWA‐enriched growth media showed higher saturated fatty acids proportions (56.9% and 98.3%, respectively, over that of FWH), with better biodiesel characteristics. FWH showed the heights significant production of 2‐phenylethanol up to 56.7 mg L−1 after 96 hours. However, FWH enriched with WWA showed the highest gross energy output of 33.98 GJ m−3 y−1. Thus, the present study suggested an integrated approach of M. pulcherrima cultivation on FWH enriched with WWA for efficient biofuel production through waste recycling.

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An Outlook on Oxygenated Fuel for Transportation

Pal,

Pandey,

Kunwar

et al. 2023

Renewable Energy Innovations

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Potential of n-butanol/diesel blends for CI engines under post injection strategy and different EGR rates conditions

Cited by 56 publications

References 64 publications

Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

A sustainable approach for bioconversion of food and lignocellulosic wastes into liquid biofuel using a new Metschnikowia pulcherrima isolate

An Outlook on Oxygenated Fuel for Transportation

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