Diesel Fuel Pump

Diesel fuel pumps are designed to inject a specific amount of fuel at a very specific time. They control the injectors by the pressure waves of the fuel that they pump. They are usually linked to the crankshaft or the camshaft through a series of gears. These gears allow the fuel pump to be driven directly by the crankshaft of the engine. However, some are belt driven and some are chain driven. The diesel fuel pump has mechanisms in it which allows more or less fuel to be pumped. If less fuel is pumped into the cylinders, this slows the engine. Pumping more fuel increases the speed of the engine. Consequently, the fuel pump regulates the speed of the diesel engine.