Question 309Motor Plants - Assistant Engineer

The correct answer is A. The part labeled "E" in the illustration is the fuel injection pump, which is responsible for developing the highest fuel pressure in the diesel engine system. The fuel injection pump is the component that pressurizes the fuel to the high levels required for injection into the engine's cylinders. The other options (X, Y, and Z) likely represent other engine components, such as the fuel lines or the engine block, which do not generate the highest fuel pressure in the system. The fuel injection pump is the critical component that creates the necessary high-pressure fuel delivery for the engine to operate effectively.