ANALISIS EFEKTIVITAS PEMBERSIHAN INJEKTOR ELECTRONIC FUEL INJECTION (EFI) MENGGUNAKAN ALAT PEMBERSIH BERBASIS ULTRASONIK
DOI:
https://doi.org/10.36257/machinery.v7i2.11961Keywords:
EFI Injector, Ultrasonic, Cavitation, Fuel Flow Rate, Spray PatternAbstract
Injektor Electronic Fuel Injection (EFI) merupakan komponen penting dalam sistem bahan bakar kendaraan bermotor yang rentan mengalami penurunan kinerja akibat endapan kerak karbon dan kotoran pada lubang nozzle. Penelitian ini bertujuan untuk menganalisis efektivitas alat penguji dan pembersih injektor EFI berbasis ultrasonik terhadap peningkatan volume bahan bakar, pola semprotan, dan keseragaman kinerja antar injektor. Metode yang digunakan adalah eksperimen dengan variasi waktu pembersihan ultrasonik (5, 10, 15, dan 20 menit) pada empat buah injektor Toyota bensin. Pengujian dilakukan pada tekanan fuel rail 43 psi dengan frekuensi pulsa 16 Hz dan lebar pulsa 2 ms selama 5 menit. Hasil penelitian menunjukkan bahwa pembersihan ultrasonik selama 10 menit menghasilkan peningkatan volume tertinggi, yaitu dari 59 ml menjadi 82 ml (kenaikan 23 ml atau 38,98%). Keseragaman volume antar keempat injektor mencapai rentang 80–84 ml setelah pembersihan, dengan selisih maksimum 4 ml. Tekanan sistem bahan bakar terbukti stabil pada 43 psi untuk semua kondisi pengujian. Alat ini juga berfungsi sebagai media pembelajaran praktik yang efektif di lingkungan pendidikan kejuruan otomotif.
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