diesel engine

What is a diesel engine?

• An engine that uses gasoline as its main fuel

• An engine that uses diesel or solar fuel as its main fuel

• An engine that uses natural gas as its main fuel

• An engine that uses a mixture of water and chemicals as fuel

What is the basic principle of operation in a diesel engine?

• It uses spark plugs to ignite the fuel

• It uses compressed air to ignite the fuel

• It injects a mixture of air and fuel simultaneously

• It uses a glow plug to ignite the fuel in a low temperature environment

What is the main advantage of a diesel engine over a gasoline engine?
A. Diesel engines are lighter and more compact
B. Diesel engines produce more pollution
C. Diesel engines are more fuel-efficient
D. Diesel engines are easier to start in cold temperatures

• Diesel engines are lighter and more compact

• Diesel engines produce more pollution

• Diesel engines are more fuel-efficient

• Diesel engines are easier to start in cold temperatures

How does the fuel injection system in a diesel engine work?

• Fuel is injected directly into the combustion chamber at high pressure

• Fuel is mixed with air before entering the combustion chamber

• Fuel flows through a carburetor and mixes with air

• Fuel is preheated before being injected into the engine

What is the function of a turbocharger in a diesel engine?

• To reduce fuel consumption

• To reduce the noise produced by a diesel engine

• To filter pollutants from exhaust gases

• To increase engine power by improving airflow to the combustion chamber

What does the compression ratio in a diesel engine refer to?

• The ratio of pressure before and after combustion

• The ratio of fuel to air in the combustion process

• The ratio of the combustion chamber volume at top dead center to bottom dead center

• The ratio of engine speed to engine capacity

Which of the following is a disadvantage of diesel engines?

• Diesel engines are more expensive in terms of maintenance and spare parts

• Diesel engines have cleaner emissions compared to gasoline engines

• Diesel engines are lighter and smaller

• Diesel engines are easier to start in cold weather

The primary fuel used by a diesel engine is...

• gasoline

• diesel

• natural gas

• bioethanol

Which of the following is a key component in the cooling system of a diesel engine?
A. Radiator, fan, and thermostat
B. Piston, crankshaft, and camshaft
C. Carburetor, air filter, and fuel hose
D. Alternator, starter, and coil

• 
  Radiator, fan, and thermostat
  

• Piston, crankshaft, and camshaft

• Carburetor, air filter, and fuel hose

• alternator, starter coil

What causes diesel engines to have more torque at lower speeds compared to gasoline engines?

• Diesel engines have more cylinders

• Diesel engines use higher compression ratios

• Diesel engines do not require fuel injection

• Diesel engines always use a turbocharger