Mulyo, Andre Tri (2019) Pemodelan Analisis Kekuatan Struktur Engine Dual Fuel Untuk Mencari Batasan Kekuatan Operasional. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pembuatan engine kapal modern saat ini mengarah kepada nilai efisiensi yang lebih tinggi serta menekan emisi gas buang lebih rendah. Dengan pemakaian system bahan bakar dual fuel nilai efisiensi dan emisi dapat diraih. Perbedaan karakteristik bahan bakar membuat sebuah ruang bakar dan semua komponen didalamnya harus dirancang untuk memenuhi kedua tipe bahan bakar. Ruang bakar harus efektif menerima proses pertukaran energi ketika gas dibakar didalamnya, dan pada saat yang lain harus efektif ketika minyak digunakan didalamnya. Karakteristik yang berbeda dari kedua tipe bahan bakar harus dapat bekerja pada sebuah ruang bakar (combustion chamber) yang sama. Maka dari itu struktur engine perlu dilakukan pemodelan dan Analisa kekuatan dengan bahan dan bentuk standard. Seberapa besar titik lemah dari komponen tersebut saat menerima tekanan saat proses pembakaran gas dan minyak terjadi. Pemodelan struktur engine dilakukan berdasarkan analisa struktur dan bentuk (strength and forms analysis). Hasil dari analisa ialah Stress material piston tertinggi terdapat pada diesel 100% di sudut 3600 dengan nilai stress material 106,88 Mpa dan deformasi sebesar 0,0421 mm. Dengan sudut poros engkol yang sama yaitu 360 0 Stress material terendah terdapat pada CNG 100% dengan nilai stress 96,614 Mpa dan deformasi 0,0381 mm. Semakin besar campuran CNG hingga seluruhnya CNG membuat nilai tegangan material piston semakin turun. Hal ini di karenakan nilai temperature dan tekanan dalam silinder yang ikut menuruh. Hal ini di karenakan nilai flash point pada CNG sangat tinggi.
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The making of modern ship engines now leads to higher efficiency values and lowe emissions of exhaust gases. With the use of a dual fuel fuel system the value of efficiency and emissions can be achieved. The difference in fuel characteristics makes a combustion chamber and all the components inside it must be designed to meet both types of fuel. The combustion chamber must be effective in accepting the energy exchange process when the gas is burned inside, and at other times it must be effective when oil is used in it. The different characteristics of the two types of fuel must work in the same combustion chamber. So from that the engine structure needs to be done modeling and analyzing strength with standard materials and shapes. How big is the weak point of the component when receiving pressure when the gas and oil combustion process occurs. Modeling the engine structure is carried out based on strength and forms analysis. The result of the analysis is that the highest piston material stress is found in 100% diesel at an angle of 3600 with a material stress value of 106.88 Mpa and a deformation of 0.0421 mm. With the same crankshaft angle, namely 3600 , the lowest stress material is found on 100% CNG with a stress value of 96.614 MPa and a deformation of 0.0381 mm. The greater the CNG mixture until all CNG makes the piston material voltage value decreases. This is due to the temperature and pressure values in the cylinders that follow. This is because the flash point value on CNG is very high.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSSP 623.84 Mul p-1 2019 |
| Uncontrolled Keywords: | Dual Fuel, CNG, Diesel, Struktur, Piston, Analisa Kekuatan |
| Subjects: | 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: | Andre Trimulyo |
| Date Deposited: | 19 Jun 2024 07:30 |
| Last Modified: | 19 Jun 2024 07:30 |
| URI: | http://repository.its.ac.id/id/eprint/69406 |
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