In the 1920s, who developed practical, compact injection pumps and governors that allowed the use of smaller diesel engines to power trucks, buses, and automobiles?

Technician A says diesel engines are the most efficient combustion systems in use today. Technician B says that, compared to other engines, diesel engines convert burning fuel into the most mechanical energy. Who is correct?

Select one:

The following are all advantages of diesel engines, EXCEPT __________.

Select one:

How many crankshaft rotations are required to complete all four strokes of the Otto cycle?

Select one:

Tech A says the intake stroke is happening when the piston is traveling from the top (TDC) to the bottom (BDC). Tech B says the following stroke is the compression stroke, and it compresses the air trapped in the cylinder. Who is correct?

The bore of the engine is__________________.

The stroke of the engine is__________________.

What are the four strokes of 1 complete engine cycle in the order of occurrence?

Tech A says compression ignition engines are totally different than gasoline spark ignited engines. Tech B says there are some similarities because both systems work on the same principle; they only differ in how the fuel is ignited. Who is correct?

Who developed the concept of the CI engine?

__________ was used to make the first biodiesel fuel.

Technician A says coal dust was the original diesel fuel. Technician B says the first biodiesel fuel was made out of peanut oil. Who is correct?

Select one:

What are the two operating types of Diesel Engines?

Diesel engines are classified by__________.