(Artikel) Pengaruh Penggunaan Variasi Sistem Pengapian Terhadap Performa Motor 4 Tak 125cc

Anggrik Adi Marzuki Putra, Anggrik and Nely Ana Mufarida, Nely and Asmar Finali, Asmar (2020) (Artikel) Pengaruh Penggunaan Variasi Sistem Pengapian Terhadap Performa Motor 4 Tak 125cc. Fakultas Teknik Universitas Muhammadiyah Jember.

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Abstract

Ignition system is the most important thing on a motorcycle, because this system regulates
electricity so that it becomes a spark. In the ignition system there are several important
components such as CDI and spark plugs. CDI (Capacitor Discharge Ignition) is an ignition
system on an internal combustion engine by utilizing the energy stored in a capacitor that is used
to produce high voltage to the ignition coil so that with a high voltage output the coil will produce
spark in the spark plug. This amount of energy stored in the capacitor determines how strong the
spark from the spark plug is to ignite the gas mixture in the combustion chamber. The greater the
energy stored in the capacitor, the stronger the spark produced in the spark plug to ignite the
combustion gas mixture with a note measured on the use of the same coil. Large energy will also
make it easier for spark to penetrate the high compression or fuel gas mixture which is a lot of the
result of greater throttle opening. Therefore, the condition of the CDI must be very good or normal,
because a half-dead or abnormal CDI will greatly affect the performance of a motorcycle. There
are two types of CDI which are commonly used on motorbikes, namely CDI which has Limiter and
CDI that do not have Limiter or unlimiter. Most of the default CDIs used by motorcycle
manufacturers are CDIs with a type of limiter, which means there is a limit on certain engine speed
or high RPM. So that when the RPM is high or has reached its limit, a motorcycle cannot be driven
to a higher RPM and if forced it will only waste fuel. That's why testing is done experimentally
using unlimter CDI which has a higher RPM limit or even has no limits and also adds a spark plug
variation, which uses standard plugs and iridium plugs. to test it using a dynamometer or dyno test,
so that you get a comparison between the limiter and unlimiter.

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Item Type:	Peer Review
Keywords/Kata Kunci:	CDI Unlimiter, CDI limiter, RPM, dynotest.
Subjects:	600 Technology and Applied Science
Divisions:	Faculty of Engineering > Department of Mechanical Engineering (S1)
Depositing User:	Nely Ana Mufarida | nelyana@unmuhjember.ac.id
Date Deposited:	20 Aug 2021 03:30
Last Modified:	27 Sep 2021 04:17
URI:	http://repository.unmuhjember.ac.id/id/eprint/11800

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