Polycyclic aromatic hydrocarbon emissions of non-road diesel engine treated with non-thermal plasma technology

Gao, Jianbing; Ma, Chaochen; Xing, Shikai; Sun, Liwei; Liu, Jiangquan

doi:10.1007/s11814-016-0222-3

Cited by 20 publications

(14 citation statements)

References 27 publications

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“…Under the pressure of fossil fuel consumption and environmental pollution caused by internal combustion engine powered vehicles, 1 − 5 much attention is focused on polymer electrolyte membrane (PEM) fuel cell systems. PEM fuel cell systems are free of pollutants and have a high energy density.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Investigations of an Opposed Rotary Piston Compressor for the Air Feeding of a Polymer Electrolyte Membrane Fuel Cell System

et al. 2020

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Automotive polymer electrolyte membrane fuel cell systems are attracting much attention, driven by the requirements of low automotive exhaust emissions and energy consumption. A polymer electrolyte membrane fuel cell system provides opportunities for the developments in different types of air compressors. This paper proposed an opposed rotary piston compressor, which had the merits of more compact structures, less movement components, and a high pressure ratio, meeting the requirements of polymer electrolyte membrane fuel cell systems. Preliminary performance evaluations of the opposed rotary piston compressor were conducted under various scenarios. This will make a foundation for optimizations of outlet pipe layouts of the compressor. A three-dimensional numerical simulation approach was used; further, in-cylinder pressure evolutions, fluid mass flow rates, and P – V diagrams were analyzed. It indicated that the cyclic period of the opposed rotary piston compressor was half of reciprocating piston compressors. The specific mass flow rate of the compressor is in the range of 0.094–0.113 kg·(s·L) −1 for the given scenarios. Outlet ports 1 and 2 dominated the mass flow in the discharge process under scenarios 1, 3, and 4. In-cylinder pressure profiles show multipeaks for all of these scenarios. In-cylinder pressure increased rapidly in the compression process and part of the discharge process, which led to high energy consumption and low adiabatic efficiency. The maximum adiabatic efficiency is approximately 43.96% among the given scenarios.

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Section: Introductionmentioning

confidence: 99%

Preliminary Investigations of an Opposed Rotary Piston Compressor for the Air Feeding of a Polymer Electrolyte Membrane Fuel Cell System

et al. 2020

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“…In addition, the adhered OC were dominated by low volatile OC, which was demonstrated in Figure 1(b), where the mass loss was almost zero before 400 °C for aging PM. Although functional groups could be detected using FTIR spectra, Gas Chromatography-Mass Spectrometry (GC-MS) 54 device was needed to specific OC in future works, further to analyze the adsorption characteristics by PM. disorder and soot graphitization conditions 40,55,56 , which were corresponding to the Raman shifts at ~1380 cm -1 and ~1590 cm -1 , respectively.…”

Section: Pm Nanostructure Ftir and Raman Characteristicsmentioning

confidence: 99%

Oxidation Kinetic Analysis of Diesel Particulate Matter using Single- and Multistage Methods

et al. 2019

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“…Strong evidence shows the connection between emissions from diesel vehicles and smog, which is believed to contribute to severe respiratory diseases, particularly in urban environments . Stringent emission regulations were put in action and became the main drive for advanced engine technologies, such as partially premixed compression ignition (PPCI), partially premixed combustion (PPC), high pressure fuel injection, split injection, advanced control, diesel oxidation catalysts (DOCs), diesel particulate filters (DPFs), selective catalyst reduction (SCR), nonthermal plasma (NTP) systems, and adoption of biodiesel . Nevertheless, the challenge of high exhaust emissions during engine cold start and warm‐up still remains, which is caused by the low cylinder and exhaust temperatures, resulting in poor catalyst efficiency .…”

Section: Introductionmentioning

confidence: 99%

On the emission reduction through the application of an electrically heated catalyst to a diesel vehicle

Gao

Tian

Sorniotti

2019

Energy Science & Engineering

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Exhaust emissions from diesel engine powered vehicles are considerably high during cold start and warm‐up, because of the poor catalyst performance due to the insufficient catalyst temperature. The controlled heat injection allowed by electrically heated catalysts can effectively reduce the catalyst light‐off time with relatively moderate fuel penalty. This paper compares the exhaust temperature and emissions of a case study diesel vehicle in cold and warm start conditions, and proposes two electrically heated catalyst control strategies, which are evaluated in terms of emission reduction and energy consumption with different target temperature settings. In addition, a new performance indicator, that is, the specific emission reduction, is used to evaluate the after‐treatment system and associated thermal management. For the worldwide harmonized light vehicle test cycle, the results without electrically heated catalyst show that from both cold and warm start conditions a large amount of operating points of the engine is located in the region of partial catalyst light off. Moreover, emissions, especially in terms of carbon monoxide and hydrocarbon, significantly decrease with the electrically heated catalyst implementation, for example, by at least 50% from cold start; however, they still tend to be rather substantial when the fuel is re‐injected after the engine cutoff phases. The exhaust temperature is lower than the target values in the sections of the driving cycle in which the electrically heated catalyst power is saturated according to the maximum level allowed by the device. The carbon dioxide penalty brought by the electrically heated catalyst ranges from 3.93% to 6.65% and from 6.49% to 9.35% for warm and cold start conditions, respectively.

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Polycyclic aromatic hydrocarbon emissions of non-road diesel engine treated with non-thermal plasma technology

Cited by 20 publications

References 27 publications

Preliminary Investigations of an Opposed Rotary Piston Compressor for the Air Feeding of a Polymer Electrolyte Membrane Fuel Cell System

Preliminary Investigations of an Opposed Rotary Piston Compressor for the Air Feeding of a Polymer Electrolyte Membrane Fuel Cell System

Oxidation Kinetic Analysis of Diesel Particulate Matter using Single- and Multistage Methods

On the emission reduction through the application of an electrically heated catalyst to a diesel vehicle

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