Experimental Investigation of Impacts of Injection Timing and Pressure on Combustion and Particulate Matter Emission in a Spray-Guided GDI Engine

Zhang, Miaomiao; Wei, Hong; Xie, Fei; Su, Yan; Han, Lupeng; Wu, Bin

doi:10.1007/s12239-018-0038-8

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…The burn fraction of engine decreased to 95% due to the incomplete combustion, when applied EGR with lower temperature conditions of engine. An undesired reduction in fuel efficiency can be occurred from this incomplete combustion which result in an increase PM concentrations [22]. The effect of engine speed and engine load on PM concentrations is shown in Figures 7, Figure 8 and Figure 9.…”

Section: Resultsmentioning

confidence: 99%

Investigation the combined effects of exhaust gas recirculation (EGR) and alcohol-diesel blends in improvement of NOX-PM Trade-off in compression ignition (CI) diesel engine

Fayad

Ooda

Chaichan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The increasing demand to decrease the greenhouse gas emissions leads to find clean fuel and renewable fuel such as ethanol and methanol that good replacement of oil-derived transportation fuels. The combined effects of alcohols blends (ethanol-diesel and methanol-diesel) and with and without EGR on NOX-PM Trade-off in diesel engine were investigated under variable engine loads and speeds. The EGR is considered efficient technology to reduce the NOX emissions in compression ignition (CI) diesel engines. The current study highlighted on the trade-off between nitrogen oxides (NOX) and particulate matter (PM). The oxygenating content in the ethanol blend (E10) and methanol blend (M10) decrease the PM concentrations in the exhaust pipe compared to the diesel fuel for different engine operating conditions with keep NOX emissions in the moderate level. It was found that the NOX/PM concentrations significantly decreased from the combustion of E10 and M10 under variable engine loads and speeds.

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Section: Resultsmentioning

confidence: 99%

Investigation the combined effects of exhaust gas recirculation (EGR) and alcohol-diesel blends in improvement of NOX-PM Trade-off in compression ignition (CI) diesel engine

Fayad

Ooda

Chaichan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…On the other hand, the n-butanol injected directly into the cylinder evaporates and absorbs heat, causing a drop in the temperature of the cylinder. Additionally, with the increase of NDIr, the local rich-fuel region increases, resulting in the formation of an inhomogeneous mixture and, finally, mass-spread combustion [21]. When NDIr is lower (20%), all these beneficial factors predominate and encourage the Ttq to rise.…”

Section: Combustion Characteristicsmentioning

confidence: 99%

“…DI can form a localized concentration area near the spark plug and form a layered mixture in the whole cylinder to promote a better combustion effect and improve combustion thermal efficiency [20]. However, DI also has problems such as higher demand for fuel supply pressure, HC, and more emission of particulate matter [21]. PFI allows fuel and air to mix better in the inlet [22].…”

Section: Introductionmentioning

confidence: 99%

Research on Combustion and Emission Characteristics of a N-Butanol Combined Injection SI Engine

Shang

Miao

et al. 2023

Sustainability

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Using n-butanol as an alternative fuel can effectively alleviate the increasingly prominent problems of fossil resource depletion and environmental pollution. Combined injection technology can effectively improve engine combustion and emission characteristics while applying combined injection technology to n-butanol engines has not been studied yet. Therefore, this study adopted butanol port injection plus butanol direct injection mode. The engine test bench studied the combustion and emission performance under different direct injection ratios (NDIr) and excess air ratios (λ). Results show that with increasing NDIr, the engine torque (Ttq), peak in-cylinder pressure (Pmax), peak in-cylinder temperature (Tmax), and the maximum rate of heat release (dQmax), all rise first and then drop, reaching the maximum value at NDIr = 20%. The θ0-90 and COVIMEP decrease first and then increase as NDIr increases. NDIr = 20% is considered the best injection ratio to obtain the optimal combustion performance. NDIr has little affected on CO emission, and the NDIr corresponding to the lowest HC emissions are concentrated at 40% to 60%, especially at lean burn conditions. NOx emissions increase with increasing NDIr, especially at N20DI, but not by much at NDIr of 40–80%. With the increase in NDIr, the number of nucleation mode particles, accumulation mode particles, and total particle decrease first and then increase. Therefore, the n-butanol combined injection mode with the appropriate NDIr can effectively optimize SI engines’ combustion and emission performance.

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Effect of polyoxymethylene dimethyl ethers on particle properties and diesel particulate filter regeneration

Tian

Cai

et al. 2018

Chem. Pap.

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Experimental Investigation of Impacts of Injection Timing and Pressure on Combustion and Particulate Matter Emission in a Spray-Guided GDI Engine

Cited by 9 publications

References 31 publications

Investigation the combined effects of exhaust gas recirculation (EGR) and alcohol-diesel blends in improvement of NOX-PM Trade-off in compression ignition (CI) diesel engine

Investigation the combined effects of exhaust gas recirculation (EGR) and alcohol-diesel blends in improvement of NOX-PM Trade-off in compression ignition (CI) diesel engine

Research on Combustion and Emission Characteristics of a N-Butanol Combined Injection SI Engine

Effect of polyoxymethylene dimethyl ethers on particle properties and diesel particulate filter regeneration

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