Effect of the Air Flow on the Combustion Process and Preheating Effect of the Intake Manifold Burner

Li, Zhishuang; Wang, Ziman; Mo, Haoyang; Wu, Han

doi:10.3390/en15093260

Cited by 5 publications

(6 citation statements)

References 34 publications

(53 reference statements)

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“…The combustion trend is in coherence with the BVE of fuel mixtures, projecting combustion efficiencies to respond positively to the increasing blending proportion of biodiesel, as shown in Figure 10. The increasing trend of blend efficiency is similar to that studied by Li et al (2022). The least burned fuel blend was B 5 with 54.5%, while B 100 had 81.47%, and D 100 had 88.06% at 0.0001125 kg/s or 75% loading capacity.…”

Section: Combustion Efficiency Outcomesupporting

confidence: 80%

“…Researchers have also focused on the experimental and numerical dimensions of ICE flow. Increasing diesel and air flow rates in flame stability, combustion efficiency, and other parameters increased the combustion flame instability and efficiency (Li et al, 2022). An engine was studied as a twophase flow-accommodating entity for heat and fluid flow in CFD studies of velocity magnitude, penetration length, swirl and tumble ratios, and heat release rate, and an experimented heat flow characteristic in blends of 100% pure Khaya senegalensis biodiesel blend (B 100 ), B 20 , and pure diesel blend (D 100 ) of Jatropha biodiesel (Atgur et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Effects of the fuel blend flow rate on engine combustion performance

Onojowho,

Asere

2024

Front. Energy Res.

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The aim of this study is to investigate the post-injection flow interactive effects of atomized fuel blends from an injector system of known characteristics into a direct injection compression ignition engine combustion chamber and their outcomes. Attempts were made to link the interactive influence of blend mixture quality, effluence and consumption rate of fuel injection properties on frictional loss, heat liberation, combustion, and volumetric efficiency performance outcomes of the engine. This numerical–experimental dimension study began with computational fluid dynamics (CFD) prediction of fuel in-cylinder behavior between a 225° CA (crank angle) (45°ABDC—after bottom dead center) and 360°CA (0° BTDC—before top dead center) compression stroke elapsing into an expansion stroke. A Testo gas analyzer was used to determine the combustion efficiency. The experiments validated the CFD outcomes presented. Willans lines were applied on blends to compare piston frictional losses. A swirl prediction maximum peak of 0.027237 at 336.15 CA for pure diesel blend (D100) at 2,300 rpm and 0.066811 at 341.3 CA for pure biodiesel blend (B100) at 1,800 rpm aided the mixing quality. The instantaneous velocity on the sinusoidal profile and contour around the swirling peak crank angle revealed ignition activity resulting from high mixing quality. The engine possessed high-efficient fuel blends burning strength on a minimum of 54.5% at a higher flow rate. The engine speed and flow rate interaction on the heat liberation rate made a symmetric profile for D100 and B100. Engine energy loss on friction was minimal with D100 compared to B100 and 5% biodiesel to 95% diesel blend (B5).

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Section: Combustion Efficiency Outcomesupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Effects of the fuel blend flow rate on engine combustion performance

Onojowho,

Asere

2024

Front. Energy Res.

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“…In combustor A there is a regular increase in temperature along with the flow rate and Re at a constant equivalent ratio. If the air flow speed is greater, the combustion chamber temperature will be higher and the combustion rate will be faster, which will affect the fuel flow requirements in the system [20]. Combustor B has the same characteristics as combustor A.…”

Section: Calculation Of Reynolds Number (Re)mentioning

confidence: 99%

The Effect of Insulation Thickness on Heat Transfer Characteristics and Flammability in Tube Mesoscale Combustors

Evita Leninda Fahriza Ayuni,

Andinusa Rahmandhika,

Daryono

et al. 2024

ARFMTS

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Micropower generator is a micro-scale energy source that has two main components, namely a micro/mesoscale combustor and thermophotovoltaics (TPV). The micro-scale combustor is one part that functions as a combustion chamber that produces heat in micropower plants. Heptane is used as fuel, while the combustor combustion chamber with a diameter of 3.5 mm is made from duraluminium-quart glass tube. Combustion stability in the combustion chamber is influenced by several factors, such as temperature, geometry, and combustion chamber design. In order to maintain flame stability, mesh is added to the combustion chamber. One way to minimize heat loss in the combustion chamber is to add an insulating layer to the combustion chamber. This research aims to prove the role of adding an insulating layer in flame stability in mesoscale burners. It is necessary to add an appropriate insulating layer to minimize heat loss so that it remains stable in the mesoscale burner. This experimental test shows that the temperature distribution when adding an insulation layer with a thickness of 3 mm has a higher temperature on the outside compared to a thickness of 6 mm. Meanwhile, the temperature inside the combustor chamber with a thickness of 6 mm is superior to that with a thickness of 3 mm. The flame limit of the combustor with a mesh distance of 5 mm for liquid heptane fuel was successfully stable at an equivalent ratio of ɸ0.97 – 1.5 with a maximum speed of 31.7.

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“…Moreover, compared with the standard preheating plug, increasing the length of the preheating part by 4mm can reduce the amount of CO, HC, NOX, and particulate matter emitted by 12.9%, 9.3%, 14.3%, and 9.8%, respectively, because with the increase in the glow plug length, the intake heating effect is further enhanced. For large diesel engines, using an intake air-heater to increase the intake temperature is another practical way to control emissions under cold start conditions [55]. Vivegananth and Ramesh [56] proposed a method to improve the cold start capability of low-compression ratio diesel engines by recompressing the intake air.…”

Section: Intake Heatingmentioning

confidence: 99%

“…The intake temperature of the diesel engine could be increased by installing an intake heater between the intake manifold and the turbocharger. The experimental results showed that the cold start For large diesel engines, using an intake air-heater to increase the intake temperature is another practical way to control emissions under cold start conditions [55]. Vivegananth and Ramesh [56] proposed a method to improve the cold start capability of lowcompression ratio diesel engines by recompressing the intake air.…”

Section: Intake Heatingmentioning

confidence: 99%

Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

Zhang

Huang

et al. 2023

Energies

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Reducing diesel engine emissions under cold start conditions has become much more valuable as environmental issues become more important. Regarding diesel engine emissions under cold start conditions, this review summarizes the emission mechanisms and specifically focuses on the research progress of four reduction strategies: biodiesel utilization, intake heating, injection optimization, and aftertreatment technologies. In general, adding biodiesel and Di-Ethyl-Ether (DEE) could provide the benefit of reducing emissions and maintaining engine performance. Intake heating and appropriate injection strategies could also effectively reduce emissions under cold start conditions. Unlike normal operating conditions, lean nitrogen oxide traps (LNT) or electrically heated catalysts (EHC) should be utilized in the aftertreatment of diesel engines to minimize emissions under cold start conditions. By offering the valuable information above, this review could be a helpful reference in reduction strategies for diesel engines under cold start conditions in both academia and industry.

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Effect of the Air Flow on the Combustion Process and Preheating Effect of the Intake Manifold Burner

Cited by 5 publications

References 34 publications

Effects of the fuel blend flow rate on engine combustion performance

Effects of the fuel blend flow rate on engine combustion performance

The Effect of Insulation Thickness on Heat Transfer Characteristics and Flammability in Tube Mesoscale Combustors

Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

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