Mechanism Investigation of Hydrocarbon Emissions from the In-Cylinder Post-Injection Effect on NO Oxidation over a Diesel Oxidation Catalyst

2019 ◽  
Vol 123 (37) ◽  
pp. 8009-8016
Author(s):  
Pan Wang ◽  
Jing Yi ◽  
Nnabuike Ezukwoke ◽  
Kai Li ◽  
Lili Lei
Keyword(s):  
Diesel Oxidation Catalyst ◽  
No Oxidation ◽  
Oxidation Catalyst ◽  
Hydrocarbon Emissions ◽  
Post Injection ◽  
Diesel Oxidation ◽  
Injection Effect

Diesel Oxidation Catalyst Control of Hydrocarbon Aerosols From Reactivity Controlled Compression Ignition Combustion

2011 ◽  
Author(s):  
Vitaly Y. Prikhodko ◽  
Scott J. Curran ◽  
Teresa L. Barone ◽  
Samuel A. Lewis ◽  
John M. Storey ◽  
...  
Keyword(s):  
Combustion Process ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Hydrocarbon Emissions ◽  
Compression Ignition ◽  
Reactivity Controlled Compression Ignition ◽  
Diesel Oxidation ◽  
Homogeneous Combustion ◽  
Compression Ignition Combustion ◽  
And Control

Reactivity Controlled Compression Ignition (RCCI) is a novel combustion process that utilizes two fuels with different reactivity to stage and control combustion and enable homogeneous combustion. The technique has been proven experimentally in previous work with diesel and gasoline fuels; low NOx emissions and high efficiencies were observed from RCCI in comparison to conventional combustion. In previous studies on a multi-cylinder engine, particulate matter (PM) emission measurements from RCCI suggested that hydrocarbons were a major component of the PM mass. Further studies were conducted on this multi-cylinder engine platform to characterize the PM emissions in more detail and understand the effect of a diesel oxidation catalyst (DOC) on the hydrocarbon-dominated PM emissions. Results from the study show that the DOC can effectively reduce the hydrocarbon emissions as well as the overall PM from RCCI combustion. The bimodal size distribution of PM from RCCI is altered by the DOC which reduces the smaller mode 10 nm size particles.

scholarly journals Evaluation of NO Oxidation Properties over a Mn-Ce/γ-Al2O3Catalyst

2016 ◽  
Vol 2016 ◽  
pp. 1-5
Author(s):  
Pan Wang ◽  
Peng Luo ◽  
Junchen Yin ◽  
Lili Lei
Keyword(s):  
Electron Microscope ◽  
Sol Gel ◽  
Diesel Oxidation Catalyst ◽  
No Oxidation ◽  
Oxidation Catalyst ◽  
X Ray Diffraction ◽  
Oxidation Activity ◽  
Transmission Electron ◽  
Diesel Oxidation ◽  
Oxidation Properties

With the purpose of studying the effect of diesel oxidation catalyst (DOC) on the NO oxidation activity, a series ofxMn10Ce/γ-Al2O3(x= 4, 6, 8, and 10) catalysts were synthesized by acid-aided sol-gel method. The physicochemical properties of the catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and Transmission Electron Microscope (TEM). Result showed that the crystalline size of MnOxand CeO2ranges from 5 nm to 30 nm and manganese existed mainly in the catalysts in the form of manganese dioxide. Moreover, NO oxidation experiments were carried out to evaluate the activity of the catalysts; according to the results, 6Mn10Ce/γ-Al2O3catalyst showed the supreme NO oxidation activity with a NO to NO2conversion rate of 83.5% at 300°C. Compared to 500 ppm NO inlet concentration, the NO conversion was higher than that of 750 and 1000 ppm NO over 6Mn10Ce/γ-Al2O3catalyst in the temperature range of 150–300°C.

Evaluation of H2 effect on NO oxidation over a diesel oxidation catalyst

2015 ◽  
Vol 179 ◽  
pp. 542-550 ◽  
Author(s):  
Muhammad Mufti Azis ◽  
Xavier Auvray ◽  
Louise Olsson ◽  
Derek Creaser
Keyword(s):  
Diesel Oxidation Catalyst ◽  
No Oxidation ◽  
Oxidation Catalyst ◽  
Diesel Oxidation ◽  
H2 Effect

The impact of CO and C3H6 pulses on PtO reduction and NO oxidation in a diesel oxidation catalyst

2016 ◽  
Vol 181 ◽  
pp. 644-650 ◽  
Author(s):  
Adéla Arvajová ◽  
Petr Kočí ◽  
Volker Schmeißer ◽  
Michel Weibel
Keyword(s):  
Diesel Oxidation Catalyst ◽  
No Oxidation ◽  
Oxidation Catalyst ◽  
Diesel Oxidation ◽  
The Impact
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