Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

Liu, Wei; Zhang, Wugao; Zhu, Lei; Li, Xinling; Huang, Zhen

doi:10.1007/s11434-009-0304-2

Cited by 7 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated data were in agreement with the experimental data. Increased VNP and total particle number concentrations with increasing FSC were also observed previously [17]. It was shown that particles increased in diameter when the FSC increased from 0.06%-0.2%.…”

Section: Effect Of Fsc and Sampling Conditions On Vnp Number Size Dissupporting

confidence: 82%

Formation and transformation of volatile nanoparticles from a diesel engine during exhaust dilution

Huang

2012

Chin. Sci. Bull.

Self Cite

View full text Add to dashboard Cite

A classic H 2 SO 4 -H 2 O binary homogeneous nucleation model coupled to an aerosol dynamics model, suitable for studying the formation and transformation of volatile nanoparticles (VNPs) during diesel engine exhaust dilution, has been developed. Using the H 2 SO 4 -H 2 O binary homogeneous nucleation model, the nucleation ratio and molecular cluster size were calculated. The effect of aerosol dynamic processes on VNP number size distributions was studied. The effects of fuel sulfur content (FSC) and sampling conditions in the laboratory on VNP number size distributions were also calculated. Our simulations demonstrated that nucleation increased the cluster number concentration and that FSC, temperature and humidity significantly affected the nucleation ratio and molecular cluster size. Coagulation promoted the evolution of cluster-particle size distributions from monodisperse to polydisperse. Soot present in the exhaust can suppress the formation of VNPs. FSC and sampling conditions, like the primary dilution temperature, the primary dilution relative humidity, residence time and the primary dilution ratio have significant effects on VNP number size distributions. . VNP number size distributions are nonlinear and highly sensitive to the temperature, humidity and dilution ratio during the dilution process. Recently, theoretical studies on VNPs in diesel engine exhaust have been conducted [7,8]. These studies largely focused on the evolution of VNPs in the atmosphere, leaving many questions about the mechanisms driving the formation and transformation of VNPs. Further research in this area is necessary. In this study, a classic H 2 SO 4 -H 2 O binary homogeneous nucleation model coupled to an aerosol dynamics model is presented. The work in this paper includes: (1) the nucleation ratio and molecular cluster size based on binary H 2 SO 4 -H 2 O homogeneous nucleation theory, (2) the effect of the aerosol dynamic processes on VNP number size distributions and (3) the effects of fuel sulfur content (FSC) and sampling conditions in the laboratory on VNP number size distributions. The experimental results were then compared with the modeling results.

show abstract

Section: Effect Of Fsc and Sampling Conditions On Vnp Number Size Dissupporting

confidence: 82%

Formation and transformation of volatile nanoparticles from a diesel engine during exhaust dilution

Huang

2012

Chin. Sci. Bull.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The particulate emissions of diesel vehicles is an important source of ultrafine particles in urban atmosphere, and these particles are harmful to human health [5][6][7] , therefore emission regulations become increasingly stringent. At present, the researches about CTL mainly come from engine test bench.…”

Section: Introductionmentioning

confidence: 99%

On Road Particle Emissions of a Diesel Car Fueled with Coal to Liquids

Tan

Ding

Zhi

et al. 2013

AMM

View full text Add to dashboard Cite

Particle emissions of a diesel car fueled with coal to liquids (CTL) on road were tested. The particle number and size distribution were mainly studied. Three typical roads were adopted in this test, including urban arterial roads, secondary roads and freeways. The results show that transient particle number of the car has a corresponding relationship with the vehicle speed. With the speed increasing, the number of both nucleation mode particles and accumulation mode particles increase continuously. With the CTL blend ratio increasing, the number of nucleation mode particles and accumulation mode particles decreases, especially accumulation mode particles whose size are more than 100nm diameter. With the CTL blend ratio increasing, the particle numbers in the three typical roads show downward trends, especially on freeways. It shows that the CTL fuel can distinctly reduce the exhaust particle number of diesel cars on road.

show abstract

Particle size distributions and OC, EC emissions from a diesel engine with the application of in-cylinder emission control strategies

Zhou

Guan

et al. 2014

Fuel

View full text Add to dashboard Cite

Characteristics of ultrafine particle from a compression-ignition engine fueled with low sulfur diesel

Cited by 7 publications

References 20 publications

Formation and transformation of volatile nanoparticles from a diesel engine during exhaust dilution

Formation and transformation of volatile nanoparticles from a diesel engine during exhaust dilution

On Road Particle Emissions of a Diesel Car Fueled with Coal to Liquids

Particle size distributions and OC, EC emissions from a diesel engine with the application of in-cylinder emission control strategies

Contact Info

Product

Resources

About