Performance and Emission Characteristics of a Diesel Engine Using Catalysts With Exhaust Gas Ricirculation

2006 ◽  
Author(s):  
P. V. Walke ◽  
N. V. Deshpande ◽  
A. K. Mahalle
Keyword(s):  
Diesel Engine ◽  
Catalytic Converter ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
Oxides Of Nitrogen ◽  
Test Rig ◽  
Perforated Plates ◽  
Performance And Emission ◽  
Secondary Air ◽  
Gas Recirculation

Testing of catalytic converter with exhaust gas recirculation system for diesel engine to reduce pollute gases is chosen for present work. The emphasis is given on hydrocarbon (HC), carbon monoxide (CO) and oxides of nitrogen. The catalytic converter was developed with variations of catalyst plates. Perforated plates of copper and combination of copper oxide and cerium oxide (CeO2 +CuO) were used as the catalyst. Copper spacer was used in between plates to vary the distance. Secondary air was injected into the converter to aid oxidization of HC and CO. Experimental study was carried out on computerized kirloskar single cylinder four stroke (10 B.H.P, 7.4 KW) diesel engine test rig with an eddy current dynamometer. The converter was tested with various combination with exhaust gas re-circulation (EGR) system. There are some improvements in the reduction and conversion efficiency of HC & CO. Exhaust gas re-circulation has proved to be effective in reducing NOx.

Operating Parameters of Catalysts With Catalytic Converter for Compression Ignition Engine

2005 ◽  
Author(s):  
P. V. Walke ◽  
N. V. Deshpande ◽  
L. P. Daddamwar
Keyword(s):  
Diesel Engine ◽  
Catalytic Converter ◽  
Circulation System ◽  
Exhaust Gas ◽  
Compression Ignition ◽  
Oxides Of Nitrogen ◽  
Test Rig ◽  
Compression Ignition Engine ◽  
Perforated Plates ◽  
Secondary Air

Testing of catalytic converter with exhaust gas re-circulation system for diesel engine to reduce pollute gases is chosen for present work. The emphasis is given on hydrocarbon (HC), carbon monoxide (CO) and oxides of nitrogen. The catalytic converter was developed with variations of catalyst plates. Perforated plates of copper and combination of copper oxide and cerium oxide (CeO2 +CuO) were used as the catalyst. Copper spacer was used in between plates to vary the distance. Secondary air was injected into the converter to aid oxidization of HC and CO. Experimental study was carried out on computerized kirloskar single cylinder four stroke (10 B.H.P, 7.4 KW) diesel engine test rig with an eddy current dynamometer. The converter was tested with various combination with exhaust gas re-circulation (EGR) system. There are some improvements in the reduction and conversion efficiency of HC & CO. Exhaust gas re-circulation has proved to be effective in reducing NOx.

Testing of New Catalyst for Compression Ignition Engine Exhaust Treatment

2005 ◽  
Author(s):  
P. V. Walke ◽  
N. V. Deshpande
Keyword(s):  
Diesel Engine ◽  
Catalytic Converter ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Oxides Of Nitrogen ◽  
Compression Ignition Engine ◽  
Engine Exhaust ◽  
Exhaust Treatment ◽  
Secondary Air ◽  
Gas Recirculation

Testing of catalytic converter with exhaust gas recirculation system for diesel engine to reduce pollute gases is chosen for present work. The emphasis is given on hydrocarbon (HC), carbon monoxide (CO) and oxides of nitrogen. The catalytic converter was developed with variations of catalyst plates. Perforated plates of copper and combination of copper oxide and cerium oxide (CeO2 +CuO2) were used as the catalyst. Copper spacer is used in between plates to vary the distance. Secondary air was injected into the converter to aid oxidization of HC and CO. Experimental study was carried out on computerized kirloskar single cylinder four stroke (10 B.H.P, 7.4 KW) diesel engine test rig with an eddy current dynamometer. The converter was tested with various combination of the exhaust gas re-circulation (EGR) system. There are some improvements in the reduction and conversion efficiency of HC & CO. Exhaust gas recirculation has proved to be effective in reducing NOx.

A Detailed Study of the Effects of Biodiesel Addition and Exhaust Gas Recirculation on Diesel Engine PCCI Combustion, Performance and Emission Characteristics by KIVA–CHEMKIN Coupling

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
Alborz Zehni ◽  
Rahim Khoshbakhti Saray ◽  
Elahe Neshat
Keyword(s):  
Diesel Engine ◽  
Heat Release ◽  
Exhaust Gas Recirculation ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
Performance And Emission ◽  
Combustion Performance ◽  
Temperature Heat ◽  
Dilution Effects ◽  
Gas Recirculation

In this study, a numerical study is performed by KIVA–CHEMKIN code to investigate the effects of biodiesel addition and exhaust gas recirculation (EGR) on diesel engine premixed charge compression ignition (PCCI) combustion, performance, and emission characteristics. The studies are performed for neat diesel fuel and mixture of 10–40% biodiesel addition at 67%, 50%, and 40% EGR. For this purpose, a multichemistry surrogate mechanism using methyl decanoate (MD) and methyl-9-decenoate (MD9D) is used. The main innovation of this work is analyzing the chemical, thermodynamic, and dilution effects of biodiesel addition as well as different EGR ratios on PCCI combustion behavior. The results show that the main effect of EGR on PCCI combustion of biodiesel blend is related to the high temperature heat release (HTHR), and its effect on low temperature heat release (LTHR) is low. With increasing biodiesel addition, the role of the chemical effect is increased compared to the thermodynamic and dilution effects. Rate of production analysis (ROPA) indicate that for the different biodiesel ratios, the effect of reaction nC7H16 + HO2 = C7H15-2 + H2O2 is more effective on the start of combustion (SOC) compared to the other reactions. For a defined biodiesel addition, with decreasing EGR, total (unburned) hydrocarbon (THC) and CO are decreased, while NOx and indicated specific fuel consumption (ISFC) are increased.

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