scholarly journals Optimum Design of Manganese-coated Copper Catalytic Converter to Reduce Carbon Monoxide Emissions on Gasoline Motor

2015 ◽  
Vol 23 ◽  
pp. 86-92 ◽  
Author(s):  
RM. Bagus Irawan ◽  
P. Purwanto ◽  
H. Hadiyanto
Keyword(s):  
Carbon Monoxide ◽  
Optimum Design ◽  
Catalytic Converter

Optimum design of catalytic converter to reduce carbon monoxide emissions on diesel engine

2020 ◽  
Author(s):  
Rajasekar Rajendran ◽  
U. Logesh ◽  
N. S. Praveen ◽  
Ganesan Subbiah
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engine ◽  
Optimum Design ◽  
Catalytic Converter

S. I. Engine Pollution Control Using Low-Cost Palletized Catalytic Converter

Volume 2 ◽  
2004 ◽  
Author(s):  
Madhuri Jakkaraju ◽  
Vasudha Patri
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Pollution Control ◽  
Noble Metals ◽  
Fossil Fuel ◽  
Catalytic Converter ◽  
Low Cost ◽  
Hydrocarbon Emissions ◽  
Oxides Of Nitrogen ◽  
Carbon Dioxide Co2

I. C. Engines consume large amounts of fossil fuel emitting harmful pollutants like carbon monoxide (CO), unburnt hydrocarbons (UBHC), and oxides of nitrogen (NOx). By using a catalytic converter (CC), the carbon monoxide, hydrocarbon emissions can be transformed into less harmful carbon dioxide (CO2) & water vapor (H2O). Currently available CC’s are using costly noble metals like platinum (pt), palladium (pd), rhodium (rh) etc., hence making them expensive. This paper deals with the use of low-cost palletized silver coated alumina as the catalyst element in a CC. In this study, alumina and silver were used in the ratio of 10:1. All tests have been conducted on a stationary S.I. Engine at a constant speed of 1500 r.p.m with and without CC. Also, the performance of the palletized CC in combination with promoters like Bismuth, Cerium and Lanthanum was tested which have shown better results than silver alone as the coating element. It has been experimentally determined that the CO emissions have dropped from 7.25 (% vol) to 3.03(% vol) and the HC values have reduced from 350 ppm to 190 ppm.

Numerical Investigation of Radiation Effects in Catalytic Combustion

2007 ◽  
Author(s):  
Sandip Mazumder ◽  
Michael Grimm
Keyword(s):  
Carbon Monoxide ◽  
Thermal Radiation ◽  
Catalytic Combustion ◽  
Radiation Effects ◽  
Single Channel ◽  
Radiation Transport ◽  
Catalytic Converter ◽  
Discrete Ordinates ◽  
Flammability Limits ◽  
Carbon Monoxide Combustion

In modeling catalytic combustion in a monolithic catalytic converter, it is generally assumed that the gas within the individual monolith channels does not interfere with thermal radiation. To date, no quantitative study has been undertaken to validate this assumption. Past studies for carbon monoxide combustion also appear to indicate that the emissivity of the washcoat has little effect on the thermal radiation field. In order to investigate these two issues, methane-air combustion on platinum is modeled inside a single channel of a monolith using a detailed surface reaction mechanism comprised of 24 reactions between 19 species. Radiation transport is modeled using the Discrete Ordinates Method and a gray formulation. Planck-mean absorption coefficients of the gases, calculated from the HITEMP and HITRAN databases, are used to investigate participating medium effects. All calculations were performed using the commercial CFD code, CFD-ACE+™, supplemented by user-subroutines for calculating the absorption coefficient of the gas mixture. Results show that the conversion percentages and temperature distributions are unaltered by the inclusion of participating medium radiation effects, verifying the commonly held belief, stated earlier. However, in strong contrast with carbon monoxide combustion, the emissivity of the washcoat was found to significantly affect flammability limits in the case of methane combustion—the flame being hotter and more stable for smaller values of emissivity.

Numerical Investigation of Radiation Effects in Monolithic Catalytic Combustion Reactors

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Sandip Mazumder ◽  
Michael Grimm
Keyword(s):  
Carbon Monoxide ◽  
Thermal Radiation ◽  
Catalytic Combustion ◽  
Radiation Effects ◽  
Single Channel ◽  
Radiation Transport ◽  
Catalytic Converter ◽  
Radiative Properties ◽  
Discrete Ordinates ◽  
Carbon Monoxide Combustion

In modeling catalytic combustion in a monolithic catalytic converter, it is generally assumed that the gas within the individual monolith channels does not interfere with thermal radiation. To date, no quantitative study has been undertaken to validate this assumption. Past studies for carbon monoxide combustion also appear to indicate that the emissivity of the washcoat has little effect on the thermal radiation field. In order to investigate these two issues, methane-air combustion on platinum is modeled inside a single channel of a monolith using a detailed surface reaction mechanism comprised of 24 reactions between 19 species. Radiation transport is modeled using the Discrete Ordinates Method and a gray formulation. Planck-mean absorption coefficients of the gases, calculated from the HITEMP and HITRAN databases, are used to investigate participating medium effects. All calculations were performed using the commercial CFD code, CFD-ACE+™, supplemented by user-subroutines for calculating the radiative properties of the gas mixture. Results show that the conversion percentages and temperature distributions are unaltered by the inclusion of participating medium radiation effects, verifying the commonly held belief, stated earlier. However, in strong contrast with carbon monoxide combustion, the emissivity of the washcoat was found to significantly affect flammability limits in the case of methane combustion—the flame being hotter and more stable for smaller values of emissivity.

scholarly journals PENGGUNAAN TEMBAGA SEBAGAI BAHAN CATALYTIC CONVERTER TERHADAP PERFORMA MESIN SEPEDA MOTOR SATRIA FU 150

2018 ◽  
Vol 3 (2) ◽  
pp. 97-106
Author(s):  
Muhammad Zaki ◽  
Abdul Ghofur ◽  
Sigit Mujiarto
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Chemical Reaction ◽  
Catalytic Converter ◽  
Copper Catalyst ◽  
Engine Performance ◽  
Copper Plate

Many motorcycles  increased  within past few years, the gas emmited from the motorclyce will be polluted  the population. One of technology that can reduce the emmited gas is using catalytic converter on the muffler. Catalytic converter is a catalyst that can alter or accelerate a matter (chemical reaction) of a carbon monoxide into carbon dioxide. In this research will use two types of catalytic converter that is honey comb and a copper plate. From the test can be seen that the catalytic converter with a honey comb shape better in terms of engine performance than the catalytic converter shaped plate. Compared wihtout any catalytic converter, the highest percentage honey comb catalyst reduce  the power within 0.12 HP, and torque increased to 0.04 Nm. While the highest copper catalyst  that reduce the power within 0.71 HP, and torque decreased to 0.2 Nm.

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