Data/hora: 04/06/2024 10:33:16

Provedor de dados: 	111	
País: 	China	
Título: 	Influence of coolant temperature on the performance of a four stroke spark ignition engine employing a dual circuit cooling system	
Autores: 	A. Rehman; Department of Mechanical Engineering, M. A. National Institute of Technology Bhopal; R. M. Sarviya; Department of Mechanical Engineering, M. A. National Institute of Technology Bhopal; Savita Dixit; Department of Applied Chemistry, M. A. National Institute of Technology Bhopal; Rajesh Kumar Pandey; Department of Mechanical Engineering, M. A. National Institute of Technology Bhopal.	
Data: 	2010-05-07	
Ano: 	2010	
Resumo: 	Diesel engines have attracted attention because of their higher thermal efficiency and lower carbon dioxide emissions than gasoline engines. &amp;nbsp;On the other hand, oxides of nitrogen (NOx) and particulate matter (PM) in the exhaust from diesel engines are difficult to be reduced simultaneously because a decrease in one is likely to result in an increase in the other. &amp;nbsp;In this paper, an attempt has been made to compare the effect of the heat lost to the coolant in the cylinder block, and in the cylinder head with a conventional cooling circuit with corresponding effects in an engine with a dual cooling circuit. &amp;nbsp;A dual cooling circuit employs separate cooling circuits for the cylinder block, and for the cylinder head. &amp;nbsp;A single cylinder, four-stroke, water cooled, naturally aspirated spark ignition engine test rig was developed for the purpose. &amp;nbsp;The influences of the cylinder block and cylinder head temperatures on brake specific fuel consumption (bsfc) and on exhaust emissions were measured. &amp;nbsp;The results show that raising the temperature of the coolant in the engine block can produce significant improvements in bsfc with a corresponding reduction in the hydrocarbon (HC) emissions. &amp;nbsp;Similarly, lowering the coolant temperature in the cylinder head can increase the knock limit of the engine with a corresponding reduction in the levels of NOx in the exhaust emissions. &amp;nbsp;&amp;nbsp;The objective of this investigation was to access the magnitude of the likely benefits of the dual circuit cooling system.Keywords: dual circuit cooling system, spark ignition engine, heat transfer, engine cooling&amp;nbsp;Citation: Rehman A., R. M. Sarviya, S. Dixit, and R. K. Pandey. &amp;nbsp;Influence of coolant temperature on the performance of a four stroke spark ignition engine employing a dual circuit cooling system. &amp;nbsp;Agric Eng Int: CIGR Journal, 2010, 12(1): 84－90.&amp;nbsp;	
Idioma: 	Inglês	
Identificador: 	http://www.cigrjournal.org/index.php/Ejounral/article/view/1122	
Editor: 	International Commission of Agricultural and Biosystems Engineering	
Formato: 	application/pdf	
Fonte: 	Agricultural Engineering International: CIGR Journal; Vol 12, No 1 (2010): CIGR Journal	
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