KATA PENGANTAR

Puji syukur kehadirat Allah SWT atas segala limpahan rahmat dan

hidayahnya sehingga penulis dapat menyelesaikan laporan metodologi penelitiaan

ini.

Laporan ini disusun dalam rangka menyelesaikan tugas mata kuliah di

Jurusan Teknik Mesin STITEKNAS JAMBI. Penulis menyadari bahwa tanpa

bantuan dan bimbingan dari berbagai pihak dan dosen tidak akan terlaksana

dengan baik. Tidak ada yang dapat penulis berikan sebagai ungkapan balas budi

selain doa, semoga Allah SWT memberikan balasan atas segala kebaikannya.

Penulis telah berusaha sebaik baiknya untuk menyelesaikan laporan ini

dan berharap semoga laporan dapat bermanfaat bagi pihak yang berkepentingan

kelak. Dengan hati ikhlas dan tangan terbuka dinantikan pendapat, kritikan dan

saran yang bersifat konstruktif demi menambah wawasan dan pengetahuan

penulis.

Untuk kesempatan ini penulis ucapkan terimakasih kepada yang

terhormat:

1. Bapak DR. Suratno, M.Pd selaku ketua STITEKNAS Jambi

2. Bapak Ir Generousdi,M.T selaku dosen mata kuliah Metodologi

Penelitian di Stiteknas Jambi.

3. Semua pihak yang terkait yaitu teman-teman yang telah membantu

dalam menyelesaikan laporan metodologi penelitian ini.

Jambi, 27 mei 2015

Penulis

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DAFTAR ISI

LEMBAR PENGESAHAN

ABSTRAK

KATA PENGANTAR.....................................................................................................................i

DAFTAR ISI.......................................................................................................................................ii

DAFTAR GAMBAR..........................................................................................................................iv

DAFTAR TABEL ..............................................................................................................................v

DAFTAR SIMBOL.............................................................................................................................vi

BAB I PENDAHULUAN...................................................................................................................1

1.1 Latar Belakang.................................................................................................................2

1.2 Rumusan Masalah............................................................................................................2

1.3 Tujuan Praktikum.............................................................................................................2

1.4 Batasan masalah......................................................................................................3

1.5 Manfaat Praktikum...........................................................................................................3

1.6 Sistematika penulisan..............................................................................................4

BAB II KAJIAN PUSTAKA.............................................................................................................5

2.1 Sejarah perkembangan motor bakar.................................................................................5

2.2 Pengertian umum motor bakar.........................................................................................6

2.3 Menurut siklus motor bakar ............................................................................................7

2.4 Ruang lingkup motor bakar..............................................................................................8

2.4.1 Langkah isap..................................................................................................9

2.4.2 Langkah kompresi.......................................................................................9

2.4.3 Langkah usaha.............................................................................................10

2.4.4 Langkah buang............................................................................................11

2.5 Sistem bahan bakar..........................................................................................................16

2.6 Bahan bakar premium..............................................................................................16

2.7 Nilai oktan............................................................................................................17

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2.8 Perbandingan bahan bakar dan udara...................................................................18

2.9 karburator.............................................................................................................19

BAB III METODE PENULISAN.......................................................................................................28

3.1 Skema gambar penelitian.................................................................................................28

3.2.1 Gelas ukur.....................................................................................................29

3.2.2 Tacho Meter................................................................................................30

3.2.3 Kompersi tester...........................................................................................31

3.2.4 Stop watch ..................................................................................................32

3.3 Prosedur pengujian...........................................................................................................33

3.4 Tabel data.........................................................................................................................35

3.5 Diagram alir.....................................................................................................................36

BAB IV PEMBAHASAN...................................................................................................................37

4.1 Tabel hasil pengujian ......................................................................................................37

4.2 Grafik...............................................................................................................................38

4.3 Analisa grafik...................................................................................................................41

BAB V PENUTUP..............................................................................................................................43

5.1 Kesimpulan......................................................................................................................43

5.2 Saran.................................................................................................................................43

DAFTAR PUSTAKA

LAMPIRAN

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