Analisis Karakteristik Kebisingan Knalpot Komposit Pada Mobil Toyota Kijang Tipe 7K
Abstract: Problem this study
is focused on the noise produced by the silencer of vehicle which can be very
dangerous for our health especially for
the health of those who live in urban areas.
There have been many studies on how
to reduce the noise of produced by the silencer of vehicle conducted by the
experts using various research methods such as by changing the construction
form or by changing the material that can be
used to reduce
the noise produced by the silencer of the vehicle. In this research, the writer conducted a study on how to reduce the noise produced by
the silencer of a vehicle using of composite silencer of the same size and
standard in reducing the noise produced by the silencer of Toyota Kijang 7K.
The composite was made of the
Rockwool fibers and polyester resins (thermosetting) using the hand-lay up method. The study was conducted in a
laboratory using the laboratory equipment such as sound pressure
level meter ,engine tune-up tester
(Okuda Koki ea-800a). The data of this study (the noise) was obtained
through the hemispherical method with the distance of one meter from the
silencer and divided into four point. The noise
measurement was done in the pivots of X+, X-, Y+ and Z- at each point by
Sound Pressure Level Meter. The
other data taken were the
temperature and the
velocity of exhaust gas flow on all of the four
point. The data obtained were
analyzed through the software
of Microsoft Excel. The result of
this study shows the highest reduction of noise level (0.93 % = 0.18 dB).
Keywords: Noise Produced by
Silencer, Composite of Silencer, Reduction of Noise Produced by Silencer
Penulis: Eka Sunitra, Mulyadi,
Supriyadi
Kode Jurnal: jptmesindd090186
