CONTROL GP-GOVERNOR 1W7411 - Caterpillar

Illustration 1 g01343842
Fuel Injector Operation (1) Rocker arm (2) Screw (3) Pushrod (4) Lifter Assembly (5) Camshaft (6) Fuel injector clamp (7) Fuel injector (8) Rack
Illustration 2 g00313984
Fuel Injector (7) Fuel injector (9) Gear (10) PlungerFuel injector (7) is held in position in the cylinder head by fuel injector clamp (6). Fuel is injected into the combustion chamber when rocker arm (1) pushes the top of the fuel injector downward. The movement of the rocker arm is controlled by camshaft (5) through lifter assembly (4) and pushrod (3) .The amount of fuel that is injected is controlled by rack (8). Movement of the rack causes rotation of gear (9) which is fastened to plunger (10). Rotation of the plunger changes the effective stroke of the plunger. The plunger's effective stroke is the part of the stroke that is actually injecting fuel.Injection timing is dependent on two factors:
Angular location of camshaft (5)
Location of plunger (10) The angular location of the camshaft is controlled by the camshaft drive gears at the rear of the engine. The location of the plunger can be adjusted with screw (2).