Effects of variable O2 concentrations and injection pressures on the combustion and emissions characteristics of the petro-diesel and hydrotreated vegetable oil-based fuels under the simulated diesel engine condition

Chau, Vo Tan; Charoenphonphanich, Chinda; Karin, Preechar; Saito, Susumu; Kosaka, Hidenori

doi:10.1016/j.joei.2017.07.002

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Furthermore, lower physical ignition delay and improved mixture dispersion result in lower local temperatures [15,20]. Vo et al [14] found no difference in the cone angle with an up to 30% blend of HVO with diesel and mineral diesel. Moreover, the spray cone angle was significantly wider with neat HVO compared with diesel.…”

Section: Introductionmentioning

confidence: 99%

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Performance Improvement and Emission Reduction Potential of Blends of Hydrotreated Used Cooking Oil, Biodiesel and Diesel in a Compression Ignition Engine

Sonthalia,

Kumar

2023

Energies

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The positive effect of decarbonizing the transport sector by using bio-based fuels is high. Currently, biodiesel and ethanol are the two biofuels that are blended with fossil fuels. Another technology, namely, hydroprocessing, is also gaining momentum for producing biofuels. Hydrotreated vegetable oil (HVO) produced using this process is a potential drop-in fuel due to its improved physiochemical properties. This study aimed to reduce the fossil diesel content by blending 20% and 30% HVO and 5%, 10% and 15% waste cooking oil biodiesel on a volume basis. The blends were used to conduct a thorough performance examination of a single-cylinder compression ignition engine. The thermal efficiency of the engine was enhanced by the addition of biodiesel to the blend. The efficiency increased as the proportion of biodiesel in the mix increased, although it was still less efficient than diesel. The maximum improvement in thermal efficiency of 4.35% was observed with 20% blending of HVO and 15% blending of biodiesel compared with 20% blending of HVO and diesel. However, the HC (decrease of 30%), CO (decrease of 23.5%) and smoke (decrease of 21.1%) emissions were observed to be the lowest with 30% blending of HVO and 15% blending of biodiesel. A fuzzy-logic-based Taguchi method and Grey’s method were then applied to find the best blend of HVO, biodiesel and diesel. The combination of the two methods made it easier to carry out multi-objective optimization. The brake thermal efficiency (BTE), smoke and NO emissions were selected as the output parameters to optimize the HVO and biodiesel blend. The optimization study showed that 30% blending of HVO and 15% blending of biodiesel was the best blend, which was authenticated using the confirmation experiment.

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Section: Introductionmentioning

confidence: 99%

“…Other advantages of HVO are better cold-start properties, shorter primary combustion, less white smoke and low noise [13]. Due to low lubricity, it is suggested that the content of HVO while blending with diesel should be limited to 50% [14]. Also, it was found that 30% blending of HVO in diesel can meet the EN590 norms [15].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement and Emission Reduction Potential of Blends of Hydrotreated Used Cooking Oil, Biodiesel and Diesel in a Compression Ignition Engine

Sonthalia,

Kumar

2023

Energies

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“…Kim et al 2020, 23 experimented with ethanol‐diesel blends in compression ignition (CI) engine to study combustion parameters like ignition delay, combustion duration and regulated emissions for 3 to 10% of blends, they reported maximum heat release rate (HRR max ) increased by 13.5%, ignition delay increased by 1.7 Crank angle (CA), HC emissions were reduced by 50% concerning diesel and soot opacity was also decreased from 5% to 3% 23 . Chau et al 2017 24 investigated the effects of varying oxygen concentrations on combustion and emission by employing hydrotreated vegetable oil (HVO). They reported that the low O 2 content, a significant reduction in NOx was obtained.…”

Section: Introductionmentioning

confidence: 99%

“…They reported that the low O 2 content, a significant reduction in NOx was obtained. The increased oxygen content with a HVO fraction contributed to a shorter ignition delay and a lower rate of heat release 24 . Sayin 2010 25 tested ethanol–diesel blends with 10% and 15% ethanol v/v in a CI engine for 30 Nm engine loading at 1000 and 1800 rpm of engine speeds.…”

Section: Introductionmentioning

confidence: 99%

“…The increased oxygen content with a HVO fraction contributed to a shorter ignition delay and a lower rate of heat release. 24 Sayin 2010 25 tested ethanol-diesel blends with 10% and 15% ethanol v/v in a CI engine for 30 Nm engine loading at 1000 and 1800 rpm of engine speeds. It showed that CO, HC, and smoke opacity diminished although NOx and Specific fuel consumption increased for tested conditions.…”

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confidence: 99%

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Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

Sahu

Shukla

2022

Env Prog and Sustain Energy

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Increasing air pollution and implementation of stricter emission regulations led to the research for the clean combustion concept of combustion engines. To resolve this concern, it is important to look for a clean and stable combustion concept that can adapt easily to an old existing engine as well as newer engines. The present study was performed to investigate the combustion stability and emission for blends of methanol (M), ethanol (E), and butanol (B) to evaluate the effect of their inherent oxygen content. Alcohol blends were prepared for two different oxygen mass fractions of 2.5% and 5% oxygen, m/m (defined as M2.5, E2.5, B2.5 and M5, E5, B5). For this, different volume fraction of respective alcohol was required (M2.5 and M5 contained 5.2% and 10.3% methanol respectively, E2.5 and E5 contained 7.4% and 14.8% ethanol respectively, B2.5 and B5 contained 11.7% and 23.3% butanol respectively).Detailed combustion analysis was performed for the alcohol blends (2.5% and 5% oxygen mass fraction) using the parameters like cycle-to-cycle analysis, coefficient of variation, combustion phasing etc. M5 showed the better stable combustion considering the lowest coefficient of variation for CA50 and indicated mean effective pressure. Moreover, the performance of E5 showed improved efficiency with brake thermal efficiency (BTE) of 27.94% and reduced brake specific fuel consumption. Significant reductions in hydrocarbon (HC), smoke and carbon dioxide (CO 2 ) emissions were recorded for 2.5% and 5% oxygenated condition. M5 showed lowest emission level among tested fuel with 20% lower oxide of nitrogen (NO) and 50% lower HC.

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The Effect of EGR Ratios and Ambient Temperatures on Diesel Combustion Characteristics in Constant Volume Combustion Chamber

Mai,

Tan,

Tran

et al. 2024

Proceedings of the International Conference on Sustainable Energy Technologies

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Effects of variable O2 concentrations and injection pressures on the combustion and emissions characteristics of the petro-diesel and hydrotreated vegetable oil-based fuels under the simulated diesel engine condition

Cited by 11 publications

References 28 publications

Performance Improvement and Emission Reduction Potential of Blends of Hydrotreated Used Cooking Oil, Biodiesel and Diesel in a Compression Ignition Engine

Performance Improvement and Emission Reduction Potential of Blends of Hydrotreated Used Cooking Oil, Biodiesel and Diesel in a Compression Ignition Engine

Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

The Effect of EGR Ratios and Ambient Temperatures on Diesel Combustion Characteristics in Constant Volume Combustion Chamber

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