Abstract
This paper represents an experimental investigation to evaluate the effect of magnetic field on exhaust emissions and engine performance of four-stroke, single piston spark-ignition engine working with (10% vol.)Ethanol-Gasoline blends. Carbon monoxide CO, carbon dioxide CO2 and unburned hydrocarbon HC are examined during running of the engine with and without the presence of magnetic coils. The engine performance parameters (brake power, brake specific fuel consumption and brake thermal efficiency) are investigated too .Two magnetic coils with different intensities (1000 and 2000 Gauss) were used . The magnetic coil is placed on the line of fuel supply before the carburetor. All tests were conducted at a wide open throttle (WOT) , compression ratio 10:1 , speed of 2000 rpm and ignition timing ( between 50 and 300 BTDC ) . Results show a significant reduction in exhaust gas emissions when applying the magnetic field. A maximum reduction of 68.8 % of CO, 15 % of CO2 and 42.5 % of HC are observed when using 2000 Gauss magnetic coil. Moreover, it was noticed that all engine-affecting parameters were improved. Running the engine with 2000 Gauss and 10 vol.% ethanol-gasoline blends shows better results ( concerning pollution emissions and brake thermal power ) than 1000 Gauss magnetic coil .
Highlights
Engines manufacturers worldwide concentrated their efforts to develop spark ignition engines with high thermal efficiency and low specific fuel consumption without violating the accepted level of emissions regulations
Hamoody [4], in his MSc thesis showed that the best performance of the SI engine with little emission of pollutants was during operating the engine with compression ratio 10:1, ignition timing ( 20o BTDC ), equivalence ratio ( Ф=1 ) and engine speed at (2000 rpm) when using 10 vol.% ethanol-gasoline blends
The study concentrates on the effect of magnetic field on exhaust gas emissions ( CO, CO2 & HC ) and engine performance
Summary
Engines manufacturers worldwide concentrated their efforts to develop spark ignition engines with high thermal efficiency and low specific fuel consumption without violating the accepted level of emissions regulations.
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