Semakin menipisnya cadangan minyak bumi saat ini dan diperkirakan habis 15-20 tahun lagi, membuat kelangkaan bahan bakar minyak akan sulit dihindari. Ide-ide mengenai bahan bakar alternatif pun mulai dipikirkan, baik pengembangan bahan bakar baru pengganti bahan bakar maupun penambahan bahan–bahan tertentu pada bahan bakar minyak. Dari penelitian sebelumnya belum didapat hasil yang optimal terhadap kinerja mesin diperlukan penelitian lebih lanjut tentang pengaruh variasi 0%, 7% dan 8% bioaditif. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh variasi penambahan jumlah  bioaditif  terhadap performa mesin konsumsi bahan bakar dan emisi gas buang sepeda motor.

Objek penelitian ini adalah Honda CS1 150 PGM-FI dengan variasi penambahan bioaditif  0%, 7%, dan 8%. Penelitian ini menggunakan metode eksperimen dengan pengambilan data  menggunakan alat adalah tachometer, chassis dynamometer, exhaust gas analyzer, dan fuel meter. Data Hasil penelitian dianalisis secara deskriptif dan dihitung secara teoritis dimasukkan dalam tabel dan grafik.

Hasil pengujian menunjukkan bahwa penambahan bioaditif minyak kayu putih  pada sepeda motor  Honda  CS1 150 PGM-FI  dapat meningkatkan torsi rata-rata sebesar 2,22%, meningkatkan daya rata-rata sebesar 2,53% dengan variasi bioaditif 8%. Kemampuan mereduksi emisi gas buang CO rata-rata sebesar 34,15%, emisi gas buang HC rata-rata sebesar 14,59% dengan variasi bioaditif 8%. Selanjutnya dapat menurunkan konsumsi bahan bakar rata-rata sebesar 35,78% pada variasi bioaditif 8%. Dari hasil tersebut menunjukan bahwa semakin banyak penambahan bioaditif kedalam bahan bakar pertalite akan menghasilkan kinerja mesin yang baik dan efisien.

Kata kunci: Bioaditif, emisi gas buang, konsumsi bahan bakar,   performa mesin.

The depletion of current petroleum reserves and estimated to run out in 15-20 years, making scarcity of fuel oil will be difficult to avoid. Ideas on alternative fuels have begun to be considered, both the development of new fuels to replace fuels and the addition of certain ingredients to fuel oil. Previous studies have not yet found optimal results on engine performance. Further research is needed about the effect of variations in 0%, 7% and 8% bioaditive. The purpose of this study was to determine the effect of variations in the amount of bioadditive addition to engine performance in fuel consumption and motorcycle exhaust emissions.

             The object of this research is the Honda CS1 150 PGM-FI with variations in the addition of bioadditive 0%, 7%, and 8%. This study uses an experimental method with data collection using a tool is a tachometer, dynamometer chassis, exhaust gas analyzer, and fuel meter. Data The results of the study were analyzed descriptively and theoretically calculated included in tables and graphs.

The test results show that the addition of eucalyptus oil bioadditive on a Honda CS1 150 PGM-FI motorcycle can increase the average torque of 2.22%, increase the average power of 2.53% with a bioadditive variation of 8%. Ability to Reduce CO exhaust emissions by an average of 34.15%, HC exhaust emissions by an average of 14.59% with a bioadditive variation of 8%. Then can reduce fuel consumption by an  average of 35.78% at 8% bioadditive variation. From these results it is shown that the more bioadditive addition to pertalite fuel will produce good and efficient engine performance.

Keyword: Bioaditives, exhaust emissions, fuel consumption, engine performance.