Ramadhan, Emir Reza Arbita (2022) Studi Eksperimen Penggunaan Eco Racing Octane Booster Pada Bahan Bakar Beroktan Rendah Dengan Variasi Rasio Kompresi Mesin Terhadap Performa dan Konsumsi BBM Honda CB150R. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Berkembangnya teknologi pada mesin kendaraan bermotor bersiklus otto memaksa produsen bahan bakar untuk memproduksi bahan bakar gasoline yang lebih baik, salah satu
parameter bahan bakar yang baik adalah memiliki angka oktan
yang tinggi. Namun terkadang bahan bakar yang tersedia hanya
memiliki angka oktan yang rendah. Guna meningkatkan angka oktan bahan bakar tersebut, PT. BEST menciptakan produk zat
aditif Eco Racing Octane Booster yang diklaim dapat meningkatkan angka oktan, memperbaiki performa mesin, dan dapat menghemat BBM. Penelitian ini bertujuan untuk membuktikan kebenaran klaim pabrikan Eco Racing Octane Booster tersebut.
Studi eksperimen ini dilakukan pada mesin Honda CB150R memakai BBM RON 88, RON 90, campuran RON 88 dengan Eco Racing, dan campuran RON 90 dengan Eco Racing yang sesuai dengan anjuran pakai pada kemasan. Penggunaan bahan bakar tersebut dilakukan pada dua rasio kompresi mesin berbeda yaitu CR 11:1 (kondisi mesin standar) dan CR 10:1 (tambahan packing head mesin 0,5 mm). Pengujian setiap bahan bakar pada setiap kompresi mesin yang digunakan dilakukan menggunakan Superflow dynamometer & flowbenches pada kondisi fully open throttle yang dilakukan pada kecepatan 30 km/h sampai dengan 90 km/h dengan interval kenaikan kecepatan uji
sebesar 5 km/h yang bertujuan untuk mendapatkan data erforma
mesin yaitu torsi dan daya serta konsumsi bahan bakar spesifik (SFC), emisi gas buang, air fuel ratio (AFR), temperatur mesin, dan temperatur gas buang.
Hasil dari penelitian ini didapatkan adanya peningkatan low heating value (LHV) dan angka oktan serta penurunan viskositas dan densitas pada bahan bakar yang ditambahkan pil Eco Racing. Berdasarkan pengujian, pada nilai data rata-rata hasil pengujian pada kompresi mesin 10:1, penambahan pil Eco Racing pada premium RON 88 menghasilkan peningkatan nilai daya 0,21%, torsi 0,16%, efisiensi termal 0%, kadar emisi CO 2,5%, dan kadar emisi UHC 8,09% serta penurunan nilai SFC 0,80%, sedangkan penambahan pil Eco Racing pada pertalite RON 90 menghasilkan peningkatan nilai daya 2,52%, torsi 2,25%, efisiensi termal 8,11%, dan kadar emisi UHC 4,77% serta penurunan nilai SFC 5,33% dan kadar emisi CO 15,22%. Pada nilai data rata-rata hasil pengujian pada kompresi mesin 11:1, penambahan pil Eco Racing pada premium RON 88 menghasilkan peningkatan nilai daya 4,41%, torsi 1,67%, dan efisiensi termal 11,27% serta penurunan nilai SFC 11,61%, kadar emisi CO 0,72%, dan kadar emisi UHC 24,18%, sedangkan penambahan pil Eco Racing pada pertalite RON 90 menghasilkan peningkatan nilai torsi 0,29%, SFC 2,29%, dan kadar emisi UHC 3,41% serta penurunan nilai daya 0,80%, efisiensi termal 1,23%, dan kadar emisi CO 6,56%. Penambahan Eco Racing pada bahan bakar premium RON 88 dan pertalite RON 90 lebih unggul pada putaran mesin rendah sampai menengah karena menghasilkan rata-rata nilai daya, torsi, dan efisiensi termal paling besar serta SFC paling rendah yang terjadi pada rasio kompresi mesin 10:1 dan 11:1.
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The technology development for motorized vehicle engines
with Otto-cycle stipulates the fuel manufacturer to produce better gasoline products, one of the parameters for good fuel is having high octane number level. But sometimes the market fuel only has a low octane number. To increase the amount of octane number of the fuel, PT. BEST created an additive substance called Eco Racing Octane Booster that claimed can help increase octane number in the fuel, improve the engine performance, and save fuel. This research aims to prove the accuracy of the claims from Eco Racing Octane Booster manufacturer. This experimental study was conducted with a Honda CB150R engine using fuel RON 88, RON 90, a mixture of RON 88 with Eco Racing, and a mixture of RON 90 with Eco Racing that is recommended by the packaging. The use of those fuels was conducted in two different engine compression ratios, which are CR 11:1 (standard engine condition) and CR 10:1 (additional packing head of 0.5 mm engine). The fuel testing on each compression engine used is carried out using Superflow dynamometers & flowbenches at fully open throttle conditions that are done on speed 30 km/h to 90 km/h with intervals of increasing the test speed of 5 km/h to obtain engine performance data which are torque and power and also specific fuel consumption (SFC), exhaust emissions, air-fuel ratio (AFR), engine temperature, and
exhaust gas temperature.
The results from this research found an increasing of low
heating value (LHV) and octane number as well as a decrease in the viscosity and density of the fuel added with Eco Racing pills. Based on the test, the average data value of the test results on engine compression is 10:1, the addition of the Eco Racing pill to the premium RON 88 increased the values of power 0.21%, torque 0.16%, thermal efficiency 0%, CO emission level 2.5%, and UHC emission level of 8.09% with a decreased the value is SFC 0.80%, while the addition of Eco Racing pills to pertalite RON 90 increased the values of power 2.52%, torque 2.25%, thermal efficiency 8.11%, and UHC emission level of 4.77% with decreased the values of SFC 5.33% and CO emission level 15.22%. On the average data value of the test results on engine compression is 11:1, the addition of the Eco Racing pill to the premium RON 88 increased in power values 4.41%, torque 1.67%, and thermal
efficiency 11.27% with decreased the values of SFC 11.61%, CO emission level 0.72%, and UHC emission level 24.18%, while the addition of Eco Racing pills to pertalite RON 90 increased the values of torque 0.29%, SFC 2.29%, and UHC emission level 3.41% with decreased in power value of 0.80%, thermal efficiency 1.23%, and CO emissions level 6.56%. The addition of Eco Racing to the premium RON 88 and pertalite RON 90 is superior at low to medium engine speeds because it produces the highest average power, torque, and thermal efficiency values and the lowest SFC occurs at engine compression ratios of 10:1 and 11:1.
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