Comparison of PM emissions from a gasoline direct injected (GDI) vehicle and a port fuel injected (PFI) vehicle measured by electrical low pressure impactor (ELPI) with two fuels: Gasoline and M15 methanol gasoline

Bin, Liang; Ge, Yunshan; Tan, Jianwei; Xiu-kun, Han; Gao, Liping; Hao, Lijun; Ye, Wentao; Dai, Peipei

doi:10.1016/j.jaerosci.2012.11.008

Cited by 150 publications

(58 citation statements)

References 26 publications

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“…The amount of particles collected in each stage is proportional to the current value of the corresponding channel [17], which will be converted to an aerodynamic size distribution of the exhaust particles. And based on the particle density determined by the particle diameter, the particle mass distribution can also be estimated [18].…”

Section: Testing Equipmentsmentioning

confidence: 99%

Application of Instantaneous Emission Modeling for Rural Vehicle Emission Estimation

Hao¹,

Liu²,

Wang³

et al. 2017

dtcse

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Abstract. Rural vehicles (RVs) contribute a large proportion to total air pollutant emissions in China. In order to develop and evaluate the RV emission control legislation and policy, accurate emission factors and emission inventories for RVs need to be investigated. In this paper, based on the tri-wheel rural vehicle (3-W RV) emission data measured using portable emission measurement system (PEMS) on real roads, an instantaneous emission model was developed and used to estimate the hot stabilized 3-W RV emissions and fuel consumption under real driving conditions. The modeling approach of the instantaneous emission model was presented, and the instantaneous emission model was validated using the experimental results. The predicted emissions and fuel consumption of Foton Lovol 3-W RV met well with the measured results over the selected driving trip, and the prediction errors were in the range of 3-9%.

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Section: Testing Equipmentsmentioning

confidence: 99%

Application of Instantaneous Emission Modeling for Rural Vehicle Emission Estimation

Hao¹,

Liu²,

Wang³

et al. 2017

dtcse

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show abstract

“…Datas show that PFI and GDI have similar NOx emissions. Since the mixture is heterogeneous and fuel impinges on surfaces of piston and cylinder unexpectedly, the GDI engine may form large amount of soot in the combustion process and emit much more particulates than the PFI [10] [11] . The particulate number (PN) of the PFI and the GDI engine are shown in Fig.…”

Section: B Comparison On Emissions Between the Pfi And The Gdi Enginementioning

confidence: 99%

Study on Compound Injection Technology in Gasoline Engines

Song¹,

An²

2015

Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science

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Abstract-This paper described the compound injection (PFDI) technology that combines the port fuel injection (PFI) and gasoline direct injection (GDI) system, and optimized the injection parameters by experiments to meet different requirements for mixture concentration at different conditions to improve power performance and fuel economy, and reduce emissions. The two typical gasoline engine fuel systems, PFI and GDI, were studied and their power, fuel economy performance and emissions were compared by experiments. The experiments show that the two systems have different adapting conditions and the particulate emission is the most drawbacks for the GDI engine. The advantages and current application of the PFDI system were studied and the future application strategy was discussed. The results indicate that the PFDI system can fully utilize the advantages of PFI and GDI and achieve lower emissions and better fuel economy, prominently reduce the particulate emission. The PFDI system has been implemented by several OEM to meet the Euro 6+ emission standards.

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“…Similarly, particle measurement by electrical low-pressure impactors (ELPI) also requires particles to be charged in a corona charger, therefore faradic current produced by charged particles of each channel can be measured (Marjamaki et al, 2000). In addition, particle charging is an important process in gas purification facilities such as electrostatic precipitators (ESPs) (Kim et al, 2012;Qi and Kulkarni, 2012;Liang et al, 2013;Luond and Schlatter, 2013;Clack, 2015) and filtration facilities (Sambudi et al, 2016). Compared with bipolar charging, unipolar charging of airborne particles has attracted particular attention, primarily due to its higher charging efficiency, since the recombination of charged particles with ions of opposite polarity are avoided.…”

Section: Introductionmentioning

confidence: 99%

Developments in Unipolar Charging of Airborne Particles: Theories, Simulations and Measurements

Zheng

Chang

Yang

et al. 2016

Aerosol Air Qual. Res.

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Charging of airborne particle is an important process in both scientific studies and industrial applications, of which the unipolar charging takes up the major part due to higher charging efficiency. In order to understand the charging mechanism of airborne particles, accordingly to predict the efficiency of unipolar chargers, different theoretical models have been proposed and investigated in all regimes. Numerical techniques have been also adopted by researchers to analyze the charging process of airborne particles and thus to model the unipolar chargers. On the other hand, with the advent and application of various measuring techniques, the electric charges measurement of airborne particles was made possible for researchers. In this work, we mainly present a summary of these models, numerical techniques and experimental results on unipolar charging in all regimes, as well as the recent developments in the design of unipolar chargers, trying to briefly overview the development in this research field.

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Comparison of PM emissions from a gasoline direct injected (GDI) vehicle and a port fuel injected (PFI) vehicle measured by electrical low pressure impactor (ELPI) with two fuels: Gasoline and M15 methanol gasoline

Cited by 150 publications

References 26 publications

Application of Instantaneous Emission Modeling for Rural Vehicle Emission Estimation

Application of Instantaneous Emission Modeling for Rural Vehicle Emission Estimation

Study on Compound Injection Technology in Gasoline Engines

Developments in Unipolar Charging of Airborne Particles: Theories, Simulations and Measurements

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