The application of diesel oxidation catalysts to heavy duty diesel engines in Japan

Hosoya, Mitsuru; Shimoda, Masatoshi

doi:10.1016/0926-3373(96)00025-2

Cited by 40 publications

(27 citation statements)

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“…The filter was then extracted with deionized water. This fraction included sulfate, nitrate, and other water-soluble salts, but most of this fraction is composed of sulfate and sulfateassociated water (Wang et al, 2000;Stein, 1996;Hosoya and Shimoda, 1996;Gekas et al, 2002). The weight loss of the water-extracted portion is referred to as "sulfate/water".…”

Section: Measurement Experimentsmentioning

confidence: 99%

“…In this study, PM was fractionated in terms of the soluble organic fraction (SOF), dry soot (DS), and sulfate/water. The PM collected on the PTFE-coated filter was first extracted with dichloromethane and the weight loss by dichloromethane extraction was assigned to SOF (Stratakis and Stamatelos, 2003;Boehman et al, 2005;Stein, 1996;Hosoya and Shimoda, 1996). The filter was then extracted with deionized water.…”

Section: Measurement Experimentsmentioning

confidence: 99%

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Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Shi

et al. 2008

Journal of Environmental Sciences

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Section: Measurement Experimentsmentioning

confidence: 99%

Section: Measurement Experimentsmentioning

confidence: 99%

Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Shi

et al. 2008

Journal of Environmental Sciences

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“…Previous research showed that the DOC can effectively reduce the emission of total particulate matter due to the oxidation of the SOF in the particulate (Pataky et al 1994;Hosoya and Shimoda 1996) and hence a reduction of health hazardous substances in the particulate matter (Bagley et al 1998). In this study, after passing through the DOC, the PM mass concentration can be further reduced except at the engine load of 0.13 MPa at 1280 rev/min and 1920 rev/min.…”

Section: Smoke Opacity and Particulate Mass Concentrationsmentioning

confidence: 58%

Experimental Study on Particulate Emissions of a Methanol Fumigated Diesel Engine Equipped with Diesel Oxidation Catalyst

Zhang

Cheung

Chan

et al. 2011

Aerosol Science and Technology

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In this article, the effects of fumigation methanol, diesel oxidation catalyst, and engine operation parameters (engine load and engine speed) on diesel smoke opacity, particulate mass concentration, particulate number concentration and the soluble organic fraction (SOF) in the particulate were investigated at certain selected operation conditions. Experiments were performed on a 4-cylinder direct injection diesel engine operating at three engine speeds and three loads for each engine speed. For each engine speed, there was a decrease of smoke opacity with increase in the level of fumigation methanol. The reduction was particularly obvious at the high engine load but was not significant at the low and medium engine loads. For all test conditions, fumigation methanol could effectively reduce the particulate mass and number concentrations. However, fumigation methanol increased the fraction of SOF in the particles. The DOC could further reduce the particulate mass and number concentrations as well as the fraction of SOF in the particles when the exhaust gas temperature was sufficiently high.

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“…Research has shown that DOC could affect PM emissions in three ways: soot oxidation, soluble organic fraction (SOF) removal, and sulfate formation [6,7]. PM mass emissions may be increased by a DOC through significant sulfate formation when the fuel sulfur content is high [6].…”

Section: Introductionmentioning

confidence: 99%

Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operating on diesel and biodiesel

Shi

Song

et al. 2011

Front. Environ. Sci. Eng.

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The effects of a diesel oxidation catalytic (DOC) converter on diesel engine emissions were investigated on a diesel bench at various loads for two steady-state speeds using diesel fuel and B20. The DOC was very effective in hydrocarbon (HC) and CO oxidation. Approximately 90%-95% reduction in CO and 36%-70% reduction in HC were realized using the DOC. Special attention was focused on the effects of the DOC on elemental carbon (EC) and organic carbon (OC) fractions in fine particles (PM 2.5 ) emitted from the diesel engine. The carbonaceous compositions of PM 2.5 were analyzed by the method of thermal/optical reflectance (TOR). The results showed that total carbon (TC), OC and EC emissions for PM 2.5 from diesel fuel were generally reduced by the DOC. For diesel fuel, TC emissions decreased 22%-32% after the DOC depending on operating modes. The decrease in TC was attributed to 35%-97% decrease in OC and 3%-65% decrease in EC emissions. At low load, a significant increase in the OC/EC ratio of PM 2.5 was observed after the DOC. The effect of the DOC on the carbonaceous compositions in PM 2.5 from B20 showed different trends compared to diesel fuel. At low load, a slight increase in EC emissions and a significant decrease in OC/EC ratio of PM 2.5 after DOC were observed for B20.

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The application of diesel oxidation catalysts to heavy duty diesel engines in Japan

Cited by 40 publications

References 1 publication

Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Experimental Study on Particulate Emissions of a Methanol Fumigated Diesel Engine Equipped with Diesel Oxidation Catalyst

Effects of a diesel oxidation catalyst on gaseous pollutants and fine particles from an engine operating on diesel and biodiesel

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