Particle number emissions from a light-duty diesel engine with biodiesel fuels under transient-state operating conditions

Tan, Piqiang; Ruan, Shuai-shuai; Hu, Zhiyuan; Lou, Diming; Li, Hu

doi:10.1016/j.apenergy.2013.07.009

Cited by 92 publications

(20 citation statements)

References 29 publications

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“…Although the use of a mobility sizer is always considered to be a controversial way to determine PM characteristics, its high speed and stability are indisputable, especially in comparing PM emissions; thus it is widely used in PM investigations [3][4][5][6][7]. The results from the mobility sizer were also verified to be consistent in tendency with that from TEM investigations [8].…”

Section: Introductionsupporting

confidence: 70%

Comparative Study on Particles Formation in a Diesel Engine When Lubricating Oil Involved in Fuel Combustion

Dong

Han

Liang

et al. 2015

Journal of Chemistry

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The effect of lubricating oil on the morphology of particulate matter (PM) was studied in a diesel engine fueled with pure diesel fuel and blended fuel containing 0.5% by weight of lubricating oil. Particulate matter emitted by diesel engines is formed primarily by soot agglomerates which are composed of primary particles. In this paper, particulate matter was collected with a thermophoretic sampling system, and a high-resolution transmission electron microscope (TEM) was used to investigate the primary particles. A Fast Particulate Spectrometer, DMS 500, was used to determine the particle size distributions. The TEM results indicated that the mean diameters of the primary particles increased after the oil was added into the fuel. Particle size distributions results showed that lubricating oil in the fuel gave rise to a higher concentration in nucleation mode.

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Section: Introductionsupporting

confidence: 70%

Comparative Study on Particles Formation in a Diesel Engine When Lubricating Oil Involved in Fuel Combustion

Dong

Han

Liang

et al. 2015

Journal of Chemistry

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“…The adverse effects of vehicular emissions, especially particulate matter emissions on health and environment have triggered research interests in fuel formulations (Chen et al, 2012b;Giakoumis et al, 2012;Millo et al, 2012;Chen et al, 2015;Amara et al, 2016), engine calibration and designs (Chen et al, 2012a;Lee and Jeong, 2012;Tan et al, 2014;Chen et al, 2017), and effective after treatment technologies (Mamakos et al, 2013b;Lee et al, 2015) to reduce ultrafine particle emissions. Increasingly stringent regulations such as Euro 5/6 legislation, which specifies a non-volatile particle number emission limit of 6 × 10 11 particles km -1 to complement the mass-based limit for particulate emissions from light-duty diesel vehicles, have been proposed Otsuki et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of a Condensation Particle Counter Challenged by Particles with Varying Wettability to Working Liquid

Zhang

2017

Aerosol Air Qual. Res.

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The counting efficiency of an in-house laminar flow Condensation Particle Counter (CPC) was investigated experimentally. The CPC was challenged by different sources of particles (ambient particles, and combustion particles generated from CH 4 and C 2 H 4 ), and the counting efficiency of the in-house ultrafine CPC (IUCPC) was obtained by comparing particle concentration data measured by the IUCPC with that measured by a reference instrument, TSI CPC 3775. The counting efficiency is closely related to the contact angle (an indication of the wettability of particles by the working fluid) and the combination of the saturator and the condenser temperatures. The particles from different sources appeared to have different contact angles, in other words, different wettability by the working liquid.

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“…Diesel engines are widely employed for their efficient fuel consumption and low CO 2 emission, but they are also one of the widely recognized sources for particle emission, which has negative impacts on the environment and human health. Increasingly stringent legislations on vehicular emissions have triggered research interests in fuel formulations and oxygenated fuel addition [1][2][3][4][5], engine calibration and designs [6][7][8][9], and effective after treatment technologies [10,11] to reduce particle and gaseous emissions. Among all the aforementioned techniques, engine calibration has limited room for emissions improvement, and the effects of oxygenated fuel addition on particle emissions are somewhat controversial [2].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of DPF Micropore Structure and Particle Property on Its Filtration Process

Meng

Fang

et al. 2016

Journal of Combustion

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A single layer filtration system was developed to investigate the filtration and regeneration performance of diesel particle filter (DPF). The particle layer thickness was directly measured online to analyze the different filtration stages. The influence of particle property on particle layer stage performance was also investigated. The results indicate that the filtration velocity can greatly affect the deep bed filtration stage, and the deposited particle layer can be compressed even in very low filtration velocity and higher filtration velocity trends to form denser particle layer. Optimizing the pore structure can effectively shorten the deep bed filtration stage and reduce the pressure drop eventually. An empirical function was proposed to relate the pore structure and the initial increment rate of pressure drop, which presented that reducing the pore size distribution range (3σ) can result in low DPF filtration pressure drop. The filtration stage could be further divided into four stages, and the value of particle layer thickness ranging within 15~20 μm has been found to be critical number for the shift from the transient stage to the cake filtration stage. Particle with large primary diameter and BET surface was beneficial to form loose particle layer.

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Particle number emissions from a light-duty diesel engine with biodiesel fuels under transient-state operating conditions

Cited by 92 publications

References 29 publications

Comparative Study on Particles Formation in a Diesel Engine When Lubricating Oil Involved in Fuel Combustion

Comparative Study on Particles Formation in a Diesel Engine When Lubricating Oil Involved in Fuel Combustion

Experimental Investigation of a Condensation Particle Counter Challenged by Particles with Varying Wettability to Working Liquid

Experimental Study on the Influence of DPF Micropore Structure and Particle Property on Its Filtration Process

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