Diesel engines start quizz

Diesel engines are always louder than gasoline engines

• True

• False

Why diesel engines last longer than gasoline engines?

• Because diesel engines consume less fuel than gasoline engines

• Because they have lesser movable parts

• Because diesel engines run at lower rpms

• They never last longer than gasoline engines

Diesel engines are only economical for high mileage driving

• True

• False

Why diesel engines generate more torque than gasoline engines

• Because their higher compression ratio

• Because diesel fuel has more energy density than gasoline fuel

• Because of their longer strokes

• All the options are correct

What is the function of spark plugs in some diesel engines?

• Ignite fuel to develop power

• Increase exhaust temperature to help clean emissions

• To help start the engine in cold climates

• To ensure all fuel is consumed increasing fuel efficiency

What was the motivation for the creation of the diesel engine?

• Winning a science fair

• Having a more fuel efficient engine

• To create engines locally in face of difficult exportation and importation of the time

• To gain notoriety among inventors

What was the great contribution of Robert Bosch to diesel engines?

• Being the first to use diesel fuel for diesel engines

• Using the diesel engine in automotive applications for the first time

• Demonstrate the affordable price of diesel

• Creation of a fuel pump small enough to use diesel engines in more applications

Komatsu currently uses Cummins engines in its machines

• True

• False

Komatsu engines are exclusively use in Komatsu equipment

• True

• False

What is the higher injection pressure in modern diesel engines?

• 26,000 psi

• 30,000 psi

• 36,000 psi

• 45,000 psi