Meinardhi, Azhar Rahmansyah (2019) Pemodelan Dinamik dan Perancangan Rasio E-CVT (Electric Continuously Variable Transmission) untuk Kendaraan Off-Road Berpenggerak Motor Listrik. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perkembangan teknologi pada bidang otomotif mengalami beberapa pergeseran segmen. Dari sistem penggerak, kendaraan dengan internal combustion engine (ICE) kini mulai tergeser dengan kendaraan berpenggerak motor listrik. Dari sistem transmisi, kendaraan dengan sistem transmisi otomatis kian diminati salah satunya adalah continuously variable transmission (CVT). Elektrifikasi dari kendaraan menjangkau ke seluruh segmen termasuk kendaraan off-road. Namun, transmisi CVT tidak bisa mengakomodasi torsi yang besar sesuai karakteristik kendaraan off-road karena terbatas oleh gesekan antara belt dan pulley. Terdapat jenis CVT yang mampu mengakomodasi torsi yang besar yaitu ECVT (electric continuously variable transmission) dengan basis planetary gear. Untuk itu perlu dilakukan penelitian terhadap performa kendaraan dengan kombinasi ECVT maupun fix gear ratio (dual speed transmission) yang merupakan transmisi dari mobil off-road objek amatan. Penelitian ini dilakukan dalam beberapa tahapan penelitian. Tahapan pertama adalah pengumpulan data sebagai variabel perhitungan dengan pengukuran, pengujian, maupun simulasi. Tahap ke dua adalah membuat pemodelan dinamik kendaraan menggunakan Simulink baik kendaraan dengan ECVT maupun dual-speed transmission fix gear ratio. Tahap ketiga yaitu melakukan simulasi dari model dinamik yang telah disusun dan melakukan analisis untuk mengetahui performa kendaraan dengan masing-masing transmisi.
Dari penelitian ini didapati dari simulasi bahwa konfigurasi ECVT planetary gear yang optimal adalah dengan mode 1 yaitu motor input 1 pada sun gear, motor input 2 untuk regulator rasio pada ring gear, dan output pada carrier (planet) gear. Pada mode ini mobil dapat mencapai kecepatan 69,2 km/jam dalam waktu 34,03 detik. Rasio transmisi yang didesain adalah 3,84 sampai 0,86. Planetary gear memiliki jumlah gigi pada ring gear sebanyak 85, jumlah gigi pada sun gear 31, dan jumlah gigi pada planet gear sebanyak 27 dengan modul 1,5. Untuk tebal gear pada perhitungan dihasilkan sebesar 15 mm. Hasil perhitungan menunjukan bahwa roda gigi dapat dikatakan aman melalui perhitungan lewis dan AGMA apabila menggunakan material carbon steel SAE 1050 dengan BHN 223. Jika dibandingkan fix gear ratio, ECVT memiliki performa yang unggul tetapi tidak signifikan. Fix gear ratio menawarkan performa yang baik dengan mekanisme kerja yang sederhana dibandingkan ECVT yang membutuhkan input motor tambahan untuk regulator rasio sehingga dibutuhkan juga kontroler untuk 2 motor listrik. Namun, ECVT memiliki keuntungan lain jika difungsikan sebagai regenerative braking.
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Technological developments in the automotive field have experienced several segment shifts. From the driven system, vehicles with an internal combustion engine (ICE) are now starting to be displaced by electric motorized vehicles. From the transmission system, vehicles with automatic transmission systems are increasingly in demand, one of which is continuously variable transmission (CVT). Electrification from vehicles reaches all segments including off-road vehicles. However, the CVT transmission cannot accommodate large torque according to the characteristics of off-road vehicles because it is limited by friction between the belt and pulley. There is a type of CVT that is able to accommodate large torque, namely ECVT (electric continuously variable transmission) on a planetary gear base. For this reason, research on vehicle performance with a combination of ECVT and fix gear ratio (dual speed transmission) needs to be carried out, which is the transmission of the object's off-road observation vehicle. This research was conducted in several stages of research. The first stage is the collection of data as a calculation variable by measurement, testing, and simulation. The second stage is to make dynamic modeling of vehicles using Simulink both vehicles with ECVT and dual speed transmission fix gear ratio. The third stage is to simulate the dynamic model that has been prepared and conduct an analysis to determine the performance of the vehicle with each transmission. From this study it was found from the simulation that the optimal planetary gear configuration was by mode 1, namely motor input 1 on the sun gear, motor input 2 for the ratio regulator on the ring gear, and output on the carrier (planet) gear. In this mode the car can reach speeds of 69.2 km / h in 34.03 seconds. The designed transmission ratio is 3.84 to 0.86. Planetary gear has the number of gears on the ring gear as much as 85, the number of gears on the sun gear 31, and the number of gears on the planet gear as much as 27 with a 1.5 module of gear. For the thickness of the gear produced at the calculation of 15 mm. The calculation results show that the gears can be said to be safe through Lewis and AGMA calculations when using SAE 1050 carbon steel material with BHN 223. When compared to the fix gear ratio, the ECVT has better performance but is not significant. The fixed gear ratio offers good performance with a simple working mechanism compared to the ECVT which requires additional motor input for the ratio regulator so a controller for 2 electric motors is also needed. However, ECVT has another advantage if it functions as a regenerative braking.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | transmisi otomatis, cvt, planetary gear, rasio gear, simulink, dynotest |
| Subjects: | T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL671.6. Materials--Fatigue. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Azhar Rahmansyah Meinardhi |
| Date Deposited: | 21 Jul 2026 06:21 |
| Last Modified: | 21 Jul 2026 06:21 |
| URI: | http://repository.its.ac.id/id/eprint/72215 |
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