Effect of lubricating oil additives on particle size distribution and total number concentration in diesel engine

2012 ◽  
Vol 24 (7) ◽  
pp. 325-338 ◽  
Author(s):  
Lihui Dong ◽  
Gequn Shu ◽  
Xingyu Liang ◽  
Yuesen Wang ◽  
Lina Liu
Keyword(s):  
Particle Size ◽  
Diesel Engine ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Number Concentration ◽  
Lubricating Oil ◽  
Oil Additives ◽  
Lubricating Oil Additives

Study of Particle Size Distribution Emitted From a Diesel Engine by Diesel and Biodiesel-Diesel Blends Fuels

2013 ◽  
Author(s):  
Xiaobei Cheng ◽  
Liang Chen ◽  
Fangqin Yan ◽  
Guohua Chen
Keyword(s):  
Particle Size ◽  
Diesel Engine ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Diesel Fuel ◽  
Number Concentration ◽  
High Load ◽  
Injection Timing ◽  
Biodiesel Blends ◽  
Biodiesel Blend

The effect of diesel and biodiesel blends on particle size and number concentration distributions were studied in diesel engine under different operating conditions, including speeds, loads, and injection timing. The results showed that the engine load was more influential on particle size distribution than the engine speed. At the high load, diesel fuels produced mainly accumulation-mode particles, and at medium or lower load, diesel fuel produced more nuclei-mode particles. The injection timing had obviously influence on particle size distribution and number concentration. Advanced injection timing induced higher number concentrations of nuclei-mode particles for the low load and more accumulation mode particles for high load. Compared to the neat diesel fuel, the combustion process was improved when fueled with diesel-biodiesel blends. The oxygen contained in the biodiesel fuel may improve combustion. The number and mass concentration of PM was greatly decreased with the increase in biodiesel blend ratio. Biodiesel blends had an early start of injection, and particle size distributions tended to be ultra-fine particles with the increase in the ratio of biodiesel blend. The average mid-diameter range of particles was significantly affected by the change in fuel injection timing.

Determination of Particle-Size Distribution and Concentration of Cigarette Smoke by a Light-Scattering Method

1977 ◽  
Vol 9 (3) ◽  
Author(s):  
T. Okada ◽  
Y. Ishizu ◽  
K. Matsunuma
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Cigarette Smoke ◽  
Scattered Light ◽  
Geometric Mean ◽  
Number Concentration ◽  
Scattering Method ◽  
Working Standard

AbstractA new method for determining particle-size distribution of cigarette smoke particles was developed by simultaneous measurement of scattered light at three angles for a fixed wavelength. A theoretical chart useful for this purpose, which was made of the relative intensities of scattered light at the angles 45° and 135° to that at the angle 90°, was calculated on the basis of the Mie theory. The number concentration was determined from the Rayleigh ratio using the working standard method. The measurements were rapidly performed, without change of particle size during measuring time, with a device for dilution. The geometric mean diameter, the logarithmic standard deviation and the number concentration of mainstream smoke were found to be about 0.18 um, 0.4 and 3 X 10

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.

Effect of indirect non-thermal plasma on particle size distribution and composition of diesel engine particles

2017 ◽  
Vol 19 (11) ◽  
pp. 115503 ◽  
Author(s):  
Linbo GU ◽  
Yixi CAI ◽  
Yunxi SHI ◽  
Jing WANG ◽  
Xiaoyu PU ◽  
...  
Keyword(s):  
Particle Size ◽  
Diesel Engine ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Thermal Plasma ◽  
Non Thermal Plasma
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