Pada saat temperatur mesin masih dingin (belum tercapai temperatur kerja), mesin sulit hidup (sebagian bahan bakar yang diinjeksikan menempel pada manifold, sehingga campuran jadi kurus).

Metode Penginjeksian Bahan Bakar

Quiz
•
Instructional Technology
•
12th Grade
•
Hard
Safiq Abdillah
FREE Resource
15 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Saat kunci kontak pada posisi start, arus akan ke injektor dan saklar waktu start masih menutup (on), Injektor akan terbuka dan bahan bakar menyemprot. Penyemprotan maksimum = 9 detik. Tujuannya = Bila terjadi gagal start tidak terjadi banjir (bahan bakar berlebih).
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Saat kunci kontak posisi start, ECU menerima tegangan sinyal dari kunci kontak. ECU mengkalkulasi durasi injeksi berdasarkan : Temperatur Mesin, Temperatur Udara masuk, Tegangan baterai. Bila ada sinyal putaran ECU akan memberi durasi sinyal Injeksi yang aktual (diperlukan).
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Total Durasi Injeksi = 4 + 1 + 1 = 6 mili detik. Bila temperatur semakin rendah maka durasi injeksi dibuat semakin besar (lama).
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Setelah mesin hidup pengontrolan durasi injeksi dikelompokkan pada 3 tingkatan : - Injeksi Dasar (Basic Injection Duration) - Sistem Koreksi (Injection Correction) - Koreksi Tegangan (Voltage Correction)
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Pencampuran bahan bakar dan udara secara stokiometri (campuran ideal). Yaitu 14,7 kg udara dibanding 1 kg bahan bakar.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Apa yang dimaksud dengan campuran ideal dalam penginjeksian?
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