Study on Performance Enhancement Technologies for Two Cylinder Diesel Engine for Off-Road Applications

Karthikeyan, S.; Annamalai, K.

doi:10.1007/978-981-19-3467-4_37

Cited by 1 publication

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“…Porosity configuration of cordierite substrate [5] In a high-porosity substrate, the DOC catalyst penetrates the wall, and the catalyst amount on the wall surface is relatively small. As a result, in the high-porosity substrate fundamental concept, pores in the substrate walls are used as "added" catalyst support, suppressing decreases in hydraulic diameter (Hd) as the catalyst amount is increased [5][6]. Accordingly, selection of a substrate with thin wall technology is significant for increased open frontal area; for this, typically, cell densities of 300 and 400 cpsi for offroad diesel engines can be preferred.…”

Section: Diesel Oxidation Catalyst (Doc) Configurationsmentioning

confidence: 99%

“…For this, a platinum (Pt)-catalyst-coated DOC substrate is used to convert NO to NO2 in the exhaust gas. In this study, for the selected catalyst, the passive regeneration of soot in the presence of NO2 is accomplished between the temperature ranges of 250 °C and 375 °C [11][12][13][14]. Active regenerations are required due to the challenging operating conditions, and Cordierite DPF material is chosen to meet the DPF's robustness requirements.…”

Section: Fig 5 Soot Accumulation Processmentioning

confidence: 99%

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Study on Selection of Diesel Engine Exhaust After-Treatment System Materials and Emission Performance for Genset Applications

SUBRAMANİAN,

KANDASWAMY

2023

International Journal of Automotive Science and Technology

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The use of diesel engines for the transportation sector is ubiquitous and covers a broad continuum, like buses, trucks, agriculture, construction equipment, generators, and industrial applications. However, because of their increased use of off-road engines, they contribute more emissions in various sectors than on-road. As a result, worldwide, regardless of ongoing emission control efforts, these off-road, stationary engines also continue to be a substantial source of air pollutant emissions in the United States, European Union and Asian markets. Accordingly, while improving emissions performance, the selection of after-treatment system materials and the use of compatible after-treatment specification selections are also critical. This is only possible by effectively combining clean diesel technologies such as Fuel Injection Equipment (FIE), Turbocharger with Intercooler (TCIC), Cooled Exhaust Gas Recirculation (C-EGR), and after-treatment systems like Diesel Oxidation Catalyst (DOC), Selective Catalytic Reduction (SCR), and Diesel Particulate Filter (DPF). Overall, in this study, the influence of after-treatment system configurations and their effect on emission reduction performance are studied for three different DOC specifications based on emission testing for catalyst and size optimization. With the selected DOC catalyst specification, suitable combinations of DPF and SCR specifications are optimized further using GT-SUIT software simulation. This study was carried out during the conversion of a 15 kW NA engine to a 27 kW TCIC engine to meet diesel engine emission norms.

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Section: Diesel Oxidation Catalyst (Doc) Configurationsmentioning

confidence: 99%