Operation Of The Fuel Supply Pump - Isuzu 4JJ1-TC Service Manual

Operation of the Fuel Supply Pump

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Ring cam menekan plunger "A" kedalam kearah atas
seperti putaran eccentric cam seperti ditunjukan gambar.
Plunger "B" didorong dalam arah berlawanan dari plu-
nger "A" oleh tekanan spring. Sebagai hasilnya, plunger
"B" menghisap bahan bakar disaat plunger "A" menya-
lurkan bahan bakar dengan tekanan ke fuel rail.
4JJ1-TC Engine-41
1. Suction Control Valve (SCV)
2. Suction Valve
3. Delivery Valve
4. Eccentric Cam
5. Ring Cam
6. Plunger A Top Dead Center
(TDC) at Compression Stroke
7. Plunger B Bottom Dead
Center (BDC) at Intake Stroke
8. Plunger A Beginning of
Compression Stroke
9. Plunger B Beginning of
Compression Stroke
10. Plunger A Bottom Dead
Center (BDC) at Intake Stroke
11. Plunger B Top Dead Center
(TDC) at Compression Stroke
12. Plunger A Beginning of
Compression Stroke
13. Plunger B Beginning of Intake
Stroke