scholarly journals Particulate matter emission from a heavy duty diesel engine with three binary blends

2018 ◽  
Vol 22 (5) ◽  
pp. 2065-2076 ◽  
Author(s):  
Shuli Wang ◽  
Simon Sprengers ◽  
Bart Somers ◽  
Goey De
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Low Temperature Combustion ◽  
Particulate Matter Emission ◽  
Composition Ratio ◽  
Particulate Matter Emissions ◽  
Soot Emissions ◽  
Heavy Duty Diesel ◽  
Composition Ratios ◽  
Test Fuel

Low temperature combustion using gasoline-like fuels has the potential to pro-vide high efficiencies and extremely low NOx and soot emissions. In this study, different volume percentages (30%~70%) of iso-octane, toluene, and n-butanol are blended with n-heptane separately. These blends with different composition ratios are tested on a modified single-cylinder research engine. Also, simulations are performed using a homogeneous reactor method to know the fuel-chemical effects on particulate matter emissions. Thirdly, a composition ratio of 70% is selected to perform further experiments based on the results from the initial composition ratio experiments with a focus on the particle size distributions. It was found that if the test fuel can provide sufficient ignition delay to allow fuel to premix with air fully, the soot emissions will be low and particle size is small even if the test fuel contains a lot of aromatic compounds.

Fuel Quality Effects on Particulate Matter Emissions from Light- and Heavy-Duty Diesel Engines

1994 ◽  
Author(s):  
C. J. J. Den Ouden ◽  
R. H. Clark ◽  
L. T. Cowley ◽  
R. J. Stradling ◽  
W. W. Lange ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Diesel Engines ◽  
Fuel Quality ◽  
Heavy Duty ◽  
Particulate Matter Emissions ◽  
Heavy Duty Diesel

scholarly journals Characterisation of Particulate Matter Emitted from Cofiring of Lignite and Agricultural Residues in a Fixed-Bed Combustor

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Nattasut Mantananont ◽  
Savitri Garivait ◽  
Suthum Patumsawad
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Rice Husk ◽  
Fixed Bed ◽  
Spherical Shape ◽  
Particle Morphology ◽  
Fuel Mixture ◽  
Agricultural Residues ◽  
Particulate Matter Emission ◽  
Air Supply

This study is focused on the emission of fixed bed combustor batch operated. Real-time analyser ELPI (electrical low-pressure impactor) system was used to size-segregated particulate matter emission ranging from 40 nm to 10 μm. The results show that total number concentration were3.4×103,1.6×104, and1.5×105 particles/cm3⋅kgfuel, while total mass of particles were 12.2, 8.0, and 6.5 mg/Nm3⋅kgfuelfor combustion of lignite, rice husk and bagasse, respectively. But it can be noticed that cofiring released more particulate matter. Meanwhile it was found that the effect of ratio of over-fired air to total air supply is more pronounced, since decrease in this ratio, the amount of particles are decreased significantly. For particle size distribution, it can be observed that submicron-sized particles dominate and the most prevailing size is in the range: 50 nm<Dp<100 nm, for lignite and agricultural residues. However, during cofiring of fuel mixture at 70% rice husk mass concentration, it is found that there are two major fractions of particle size; 40 nm<Dp<70 nm and 0.2 μm<Dp<0.5 μm. The analysis of particle morphology showed that the isolate shape of submicron particle produced during lignite combustion is characterised by different geometries such as round, capsule, rod, flake-like, whereas the spherical shape is obtained with combustion of rice husk.

A Study of Particle Size Distribution from a Low Temperature Combustion Heavy-Duty Diesel Engine

2011 ◽  
Vol 130-134 ◽  
pp. 2379-2382
Author(s):  
Da Yu ◽  
Yi Qiang Pei ◽  
Suo Zhu Pan ◽  
Tong Li ◽  
Zhi Qiang Han ◽  
...  
Keyword(s):  
Particle Size ◽  
Diesel Engine ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Major Change ◽  
Quality Parameters ◽  
Injection Timing ◽  
Low Temperature Combustion ◽  
Heavy Duty Diesel ◽  
Engine Emission

The use of a variety of means of control in the engine combustion temperature in the low load has been more widely used. Although the opacity of the filter paper on smoke (FSN) was used as a standard in many laboratories PM quality parameters measured, but cannot be measured under different conditions the engine size and number of particles in a major change, especially in smaller size The particles on the human body more dangerous trends. So a study of particle size distribution of a heavy diesel engine emission was investigated under the condition of different intake valve closing timing, different EGR, different injection timing and multiple injections.

Dilution Sensitivity of Particulate Matter Emissions From Reactivity Controlled Compression Ignition Combustion

2015 ◽  
Author(s):  
Wei Fang ◽  
David B. Kittelson ◽  
William F. Northrop
Keyword(s):  
Particulate Matter ◽  
Diesel Combustion ◽  
Compression Ignition ◽  
Total Particulate Matter ◽  
Reactivity Controlled Compression Ignition ◽  
Carbonaceous Particles ◽  
Relative Contribution ◽  
Particulate Matter Emissions ◽  
Soot Emissions ◽  
Hydrous Ethanol

Dual-fuel reactivity-controlled compression ignition (RCCI) combustion can yield high thermal efficiency and simultaneously low NOx and soot emissions. Although soot emissions from RCCI is very low, hydrocarbon emissions are high, potentially resulting in higher than desired total particulate matter (PM) mass and number caused by semi-volatile species converting the particle phase upon primary dilution in the exhaust plume. Such high organic fraction PM is known to be highly sensitive to the dilution conditions used when collecting samples on a filter or when measuring particle number using particle sizing instruments. In this study, PM emissions from a modified single-cylinder diesel engine operating in RCCI and conventional diesel combustion modes were investigated under different dilution conditions. To investigate the effect of the fumigated fuel on the PM emissions, 150 proof hydrous ethanol and gasoline were used as low reactivity fuels to study the relative contribution of fumigant versus directly injected fuel on the PM emissions. Our study found that PM from RCCI combustion is more sensitive to the variation of dilution conditions than PM from single fuel conventional diesel combustion. RCCI PM primarily consisted of semi-volatile organic compounds and a smaller amount of solid carbonaceous particles. The fumigated fuel had a significant effect on the PM emissions characteristics for RCCI combustion. Hydrous ethanol fueled RCCI PM contained a larger fraction of volatile materials and were more sensitive to the variation of dilution conditions compared to the gasoline fueled RCCI mode.

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