Muwaffaq, Abdul Hakam (2016) Prediksi Performa Marine Diesel 4 Langah 93 KW dengan Metode Simulasi. Undergraduate thesis, Institut Technology Sepuluh Nopember.
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Abstract
Desain marine diesel 4 langkah telah berhasil dilakukan. Sebelum
dibangun perlu diprediksi performanya. Prediksi dilakukan dengan
menggunakan metode simulasi. Metode ini dianggap paling efektif
karena dilakukan tanpa membangun mesin terlebih dahulu.
Pemodelan dan simulasi dilakukan dengan menggunakan software
atau aplikasi. Simulasi model mencakup seluruh bagian mesin
yakni intake, compression, power, dan exhaust. Prediksi performa
mesin dilakukan berdasarkan variasi putaran mesin 1000, 1200,
1400, 1500, 1600, 1700, 1800, 2000, 2200, 2300 rpm, dan setiap
putaran dilakukan pembebanan 20%, 40%, 60%, 80%, 100%, dan
110%. Hasil Simulasi berupa karakteristik performa mesin (seperti,
torsi, daya, sfoc, bmep), dan karakteristik proses pembakaran
(seperti heat release, pressure, ignition delay). Dari simulasi
didapatkan hasil sfoc terhemat terjadi pada putaran 1700 rpm
dengan 228.24 gr/kWh. Brake power terendah adalah 42.24 kW
pada putaran 1000 rpm, dan tertinggi sebesar 96.37 kW pada
putaran 2200 rpm. Maksimum brake torque sebesar 446.473 Nm
pada putaran 1600 rpm. Brake mean effective pressure (bmep)
tertinggi pada 1600 rpm dengan nilai 14.30 bar. Tekanan tertinggi
pada silinder terjadi pada beban 100% (full load), nilai tekanan
tertinggi adalah 120.04 bar pada crank angle 8.63 derajat. Ignition
ii
delay terpendek terjadi pada putaran 2200 rpm dengan durasi
0.0315 milisecond dengan pembebanan 20%. Dan heat release
yang terjadi mempunyai nilai terbesar adalah 0.0284 j/kg/CA
terjadi pada sudut engkol 7.52o.
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Four-stroke marine diesel design has been successfully
carried out. Before build the engine, we needs to predict its
performance. Prediction is done using simulation methods. This
method is the most effective because it is done without building the
engine. Modeling and simulation use the software or applications.
Simulation models covers all parts of the engine cycle consisting
of intake, compression, power and exhaust. Performance
prediction of the engine is based on engine speed variations 1000,
1200, 1400, 1500, 1600, 1700, 1800, 2000, 2200, 2300 rpm, and
the engine load 20%, 40%, 60%, 80%, 100%, and 110%.
Simulations can produce the engine characteristics such as torque,
power, sfoc, bmep, and combustion characteristics such as heat
release, pressure, ignition delay. The result during the simulation,
the minimum and economic of specific fuel oil consumption
occured at 1700 rpm with 228.24 gr/kWh. Lowest brake power is
42.24 kW at 1000 rpm, and the highest was 96.37 kW at 2200 rpm.
The maximum brake torque of 446 473 Nm at 1600 rpm. Brake
mean effective pressure (BMEP) at 1600 rpm with a highest value
of 14.30 bar. The highest pressure in the cylinder occurs at 100%
load (full load), the value of the highest pressure is 120.04 bar at
8.63 crank angle degrees. Ignition shortest delay occurs at 2200
iv
rpm rotation with a duration of 0.0315 milliseconds by 20% engine
load. And the maximum value of heat release is 0.0284 j/kg/CA at
7.52o crank angle.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSS 621.436 Muw p-1 |
| Uncontrolled Keywords: | Marine Diesel, performa, simulasi, pemodelan |
| Subjects: | T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ799 Diesel motor--Electronic control. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 21 Feb 2020 02:09 |
| Last Modified: | 21 Feb 2020 02:09 |
| URI: | http://repository.its.ac.id/id/eprint/75088 |
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