ANALISIS VARIASI DERAJAT PENGAPIAN TERHADAP KINERJA MESIN
ABSTRAK: This study
aims to determine
the influence of
ignition timing degree
variations to engine performance (BMEP, rate of fuel consumption and SFC) on 4
stroke petrol engine with varieties of engine
rotational speed (rpm)
that use premium
as a fuel.
In this research,
it was used
three variations of ignition timing degree, namely: standard, advance 3o
and advance 6o This research was
done using a
motorcycle Honda Supra
NF 100 D.
This investigation used dynotester to determine the torque and
power from the engine. Investigation of
engine power was done on rotational speed from 5000 rpm to 9000 rpm by
range 1000 rpm, while fuel consumption test was conducted on rotational speed from 5000 rpm to 9000 rpm by
range 2000 rpm. From the results of this
research, it can be concluded that the
lowest BMEP,equal to 923.5 kPa is resulted
by the ignition
timing advanced 6 o on
rotational speed between
5000 rpm to
6500 rpm. Meanwhile, the lowest
fuel consumption (2.589 kg/h) and SFC are resulted by the ignition timing advanced
6 o on rotational speed 9000 rpm.
Penulis: Syahril Machmud,
Untoro Budi Surono, Leydon Sitorus
Kode Jurnal: jptmesindd140163
