The impact of ceria-coated partial-flow particulate filter on diese engine combustion and emission characteristics using B20

Name: Myat Hsu Thin

LCSH: Combustion

LCSH: Heat of combustion

LCSH: Diesel motor -- Combustion

Abstract: Due to increasingly stringent emissions standards, diesel engines and vehicles are now primarily oriented toward mitigating the release of hazardous exhaust gases and solid particulate matter. These emissions have garnered considerable attention due to their notable implications for environmental sustainability and public health. This paper examines the effects of incorporating a retrofit partial flow diesel particulate filter (P-DPF) on the combustion and emission characteristics of both the diesel engine and vehicle. The diesel engine was subjected to testing on an eddy current dynamometer, maintaining consistent engine speeds of 1000, 1500, and 2000 rpm while varying the engine torques at 56, 84, 112, and 140 Nm. The findings of the study indicated that the installation of the after-treatment system had no significant effects on fuel consumption and brake thermal efficiency. However, it was observed that the indicated thermal efficiency exhibited an increase, primarily attributable to the backpressure exerted by the after-treatment system. Additionally, despite receiving the same energy input, the positive indicated work experienced an elevation, resulting in higher combustion in-cylinder pressure and heat release rate. The retrofit partial flow diesel particulate filter (P-DPF) exhibited a significant reduction of approximately 65% in smoke emissions by effectively capturing and retaining soot particles within the partial filter. The analysis of nitrogen monoxide (NO), carbon dioxide (C02), oxygen (02), and exhaust temperature revealed that the trapped particles proceeded oxidation to C02 through the reaction with nitrogen dioxide (N02) and oxygen (02). Furthermore, the soot morphology and nanostructure from the diesel engine would be analyzed by using the transmission electron microscope (TEM) and x-ray diffraction method (XRD). The diesel vehicle test was examined based on the New European Driving Cycle (NEDC) by employing non-catalyzed and ceria-coated P-DPF. The non-catalyzed P-DPF can reduce particle mass (PM) emissions by 57% while the ceria-coated one can achieve a reduction of 66%. The utilization of ceria P-DPF can reduce particle number (PN) by approximately 42%

King Mongkut's Institute of Technology Ladkrabang. KMITL Lifelong Learning Center

Address: BANGKOK

Email: lifelong@kmitl.ac.th

Name: Preechar Karin

Role: Thesis Advisor

Email : preechar.ka@kmitl.ac.th

Name: Peerawat Saisirirat

Role: Thesis Co-Advisor

Name: Hidenori Kosaka

Role: Thesis Co-Advisor

Created: 2023

Modified: 2025-03-20

Issued: 2025-03-15

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Automotive and Advanced Transportation Engineering

Grantor: King Mongkut's Institute of Technology Ladkrabang

©copyrights King Mongkut's Institute of Technology Ladkrabang

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