Numerical Calculation of PM Trapping and Oxidation of Diesel Particulate Filter with Catalyst. Nagoya University

Format:

Book

Conference/Event

Author/Creator:

Na Kamura, Maki, author.

Contributor:

Hattori, Masatomo

Ozawa, Masakuni

Yokota, Koji

Conference Name:

SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

The exhaust gas from the diesel engine contains particulate matter (PM) of soot that affects human health and the environment. For the reduction of the PM emission, the diesel particulate filter (DPF) is used. When the PM deposits in the DPF, the pressure drop increase. Since the increase of the pressure drop places a burden on the engine. Therefore, regular removal of the PM by combustion is required. The PM is oxidized at a temperature of about 650 . The regeneration is performed by directly leads to an increase in fuel consumption and a decrease in engine efficiency due to extra consumption. Therefore, the consumption of fuel is improved when the timing of regeneration is optimization. However, the visualization of the behavior of PM trapping and oxidation is difficult. In this study, we constructed a series of models from PM deposition to the combustion process in the DPF with a catalyst, and behavior trapping and oxidation of the PM in the DPF is calculated. As a result, we found that, when the PM trapping and regeneration are repeated, in some cases the PM was not completely oxidized in the DPF depending on the setting condition. This PM remaining in the DPF decreases the amount of oxygen supply, leading to the deposition of the new PM. And, the numerical computation made possible to presume the action of the temperature distribution of PM combustion in DPF as a function of time and PM deposition profiles. It was suggested that the temperature change at the peak time of PM combustion has characteristics of a larger the temperature increase in the backside of an inflow way. The calculation method in this study can be applied to the optimization of the design for the PM trapping and regeneration technology in the DPF with a catalyst

Notes:

Vendor supplied data

Publisher Number:

2020-01-2169

Access Restriction:

Restricted for use by site license