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An Experimental Study on Relationship of the Engine rpm and the Strength of Electro-magnetic Waves in the Engine Room  

Choe, Gwang-Je (Department of Electrical Engineering, Halla University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.3, 2006 , pp. 112-118 More about this Journal
Abstract
In this paper, we presented experimental data of the strength of the electro-magnetic waves in the engine room of automobiles. Measured frequency ranges are $145{\sim}380MHz$ and $844{\sim}1044MHz$. Experimental studies are conducted by measuring the radiated power of the frequency spectrum for above frequency bands. The $\lambda/2$ dipoles used for measurement are fabricated to comply with the COMMISSION DIRECTIVE 95/54EC. Experimental results confirm that the level of radiated power in the engine room at idling rpm is about 3dB higher than that of 1500rpm.
Keywords
Electro-magnetic wave; dB; Idling; rpm;
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