Effects of a DOC+DPF system on emission characteristics of China Π engineering vehicle diesel engine and influence factors of trapping efficiency of PM for DOC+DPF system

Shao, Shushan; Cheng, Junnan; Zhang, Bo; Ma, Ning; Zhang, Dongxu; Wang, Yulong; Tian, Jinling; Cheng, Jin; Hu, Naitao; Tan, Jianwei; Wang, Xiaoyan; Zhang, Xuemin

doi:10.1080/15567036.2018.1520337

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…For example, some engines operating according to highpressure fuel injection system diagrams, exhaust gas recirculation, and intake turbochargers have been researched to reduce emissions as well as improve engine performance [45]- [47]. Diesel engines use exhaust gas approaches integrated into exhaust lines, filters for diesel PM, selective emission control systems, catalysts for diesel oxidation, or other waste heat recovery techniques to meet emission standards [48]- [52]. However, exhaust gas treatment methods cannot mitigate all exhaust gas components to the desired level, always have side effects, and can increase back pressure leading to reduced thermal efficiency [53], [54].…”

Section: Introductionmentioning

confidence: 99%

A Simulation Study on a Premixed-charge Compression Ignition Mode-based Engine Using a Blend of Biodiesel/Diesel Fuel under a Split Injection Strategy

Cao,

Johnson

2024

Int. J. Adv. Sci. Eng. Inf. Technol.

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Environmental pollution from transportation means and natural resource degradation are the top concern globally. According to statistics, NOx and PM emissions from vehicles account for 70% of total emissions in urban areas. Therefore, finding solutions to reduce NOx and PM emissions is necessary. Changing the engine's internal combustion method is considered promising and influential among the known solutions. One of the research directions is a combustion engine using the Premixed Charge Compression Ignition (PCCI) method combined with biofuels to improve the mixture formation and combustion process, reducing NOx and PM emissions. Therefore, this study presents the mechanism of the formation of PM and NOx emissions in the traditional combustion and the low-temperature combustion process of internal combustion engines. Besides, the theoretical basis of flame spread during combustion is also introduced. The key feature of this research is that it has modeled the combustion process in diesel engines under the PCCI modes. This was accomplished using blends of waste cooking oil (WCO)-based biodiesel and diesel fuel, as well as the ANSYS Fluent software. The results showed that PCCI combustion using B20 fuel can significantly reduce NOx and PM emissions, although HC and CO emissions tend to increase, and thermal efficiency tends to decrease. In further studies, different modes of the PCCI combustion process should be thoroughly examined so that this process can be implemented in practice to reduce pollutant emissions.

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Section: Introductionmentioning

confidence: 99%

A Simulation Study on a Premixed-charge Compression Ignition Mode-based Engine Using a Blend of Biodiesel/Diesel Fuel under a Split Injection Strategy

Cao,

Johnson

2024

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…The particle trap technology on the market is more mature and the particulate trap efficiency is high, reaching more than 90% [18][19][20]. In 2019, Shao Shushan's study showed that the CPM emission characteristics of engineering vehicle diesel engines improved observably under 3 different conditions with DOC + CDPF, and its CPM emission was reduced by over 85% [21]. Wang Deyuan found that significantly increasing the HC concentration can increase the particle oxidation rate, but it has little effect on the overall regeneration rate and increases the HC slip amount [22].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Carbon Particulate Matter Removal Performance of Dual-Fuel Marine Engine with DOC + CDPF

Yang

Tan

et al. 2023

Atmosphere

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This study analyzes Diesel Oxidation Catalyst (DOC) and Carbon Diesel Particulate Filter (CDPF) after-treatment systems integrated into a WARTSILA W20DF marine dual-fuel engine. The CDPF was coated with a non-precious metal catalyst whose catalytic redox performance improved with increasing temperature. The carbon particulate matter combustion reached up to 12.5 mg/s at 800 K and over 20 mg/s at 900 K. Then, the W20DF running at 230 kW, 450 kW, 680 kW, and 810 kW with 1000 rpm; a Tisch 10-8xx; and an AVL SPC 478 were used to sample and analyze the carbon particulate matter (CPM) before and after DOC + CDPF. The gaseous emissions (O2, CO2, CO, HC, NOx, and NO2) were analyzed with the flue gas analyzer AVL i60. The results show that the collected carbon particulate matter simultaneously became darker as the load decreased. This study finds that the maximum amount of CPM per unit volume of exhaust gas occurs under 50% working conditions and the lowest amount under 90% working conditions. After DOC + CDPF treatment with a non-precious metal coating, the CPM was reduced by about 50%. Furthermore, this type of catalyst’s efficiency rises with the temperature increase. The CPM combustion efficiency reached up to 20 mg/s at 900 K. The other gas components in the exhaust gas before and after DOC + CDPF also changed. These research results have a significant reference value for DOC + CDPF optimization to decrease the carbon particulate matter in marine engines.

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Experimental study on the emission characteristics of a non-road diesel engine equipped with different after-treatment devices

Zhang

Lou

Tan

et al. 2019

Environ Sci Pollut Res

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Effects of a DOC+DPF system on emission characteristics of China Π engineering vehicle diesel engine and influence factors of trapping efficiency of PM for DOC+DPF system

Cited by 14 publications

References 18 publications

A Simulation Study on a Premixed-charge Compression Ignition Mode-based Engine Using a Blend of Biodiesel/Diesel Fuel under a Split Injection Strategy

A Simulation Study on a Premixed-charge Compression Ignition Mode-based Engine Using a Blend of Biodiesel/Diesel Fuel under a Split Injection Strategy

Analysis of Carbon Particulate Matter Removal Performance of Dual-Fuel Marine Engine with DOC + CDPF

Experimental study on the emission characteristics of a non-road diesel engine equipped with different after-treatment devices

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