Prediksi Performa Marine Diesel 4 Langah 93 KW dengan Metode Simulasi

Muwaffaq, Abdul Hakam (2016) Prediksi Performa Marine Diesel 4 Langah 93 KW dengan Metode Simulasi. Undergraduate thesis, Institut Technology Sepuluh Nopember.

[img]
Preview
Text
4214105002-Undergraduate_Thesis.pdf - Accepted Version

Download (1MB) | Preview

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. ==================================================================================================== 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: https://repository.its.ac.id/id/eprint/75088

Actions (login required)

View Item View Item