4. In the fuel injection pumps for Diesel engine the effective pressure strokes of the plungers in the fuel injection pump are regulated by means of a
A. Needle valve
B. Camshaft
C. Fuel pump
D. Control rack
4. In the fuel injection pumps for Diesel engine the effective pressure strokes of the plungers in the fuel injection pump are regulated by means of a
A. Needle valve
B. Camshaft
C. Fuel pump
D. Control rack