Fuel System,Injection Pump,What Fuel Injection must do?,1.Correct Fuel Quantity 2.Fuel delivery time 3.Delivery rate 4.Fuel atomization 5.Fuel distribution,Pump Element,Cylinder,Plunger,Control Groove,Slot,Feed Hole,Delivery Valve,Dumping Valve,Operating Injection Pump,Delivery Valve,Damping Valve,Plunger,Fuel Chamber,Injection Control No fuel delivery,Fuel feed hole,Control groove,Delivery chamber,Control rack,Injection Control Fuel Delivery,Fuel feed hole,Control groove,Delivery chamber,Control rack,Injection Control Amount of Fuel Delivery,Minimum fuel,Maximum fuel,(A),