Automotive Engine Components and Functions

This video tutorial introduces engine fundamentals, breaking down the engine into three main sections: bottom end, top end, and front end. It explains how engines convert fuel into motion through combustion, detailing the roles of the combustion chamber, piston, connecting rod, and crankshaft. The video further explores piston movement, including top dead center (TDC) and bottom dead center (BDC), and explains the four-stroke cycle, which includes intake, compression, power, and exhaust strokes. The tutorial emphasizes the importance of the power stroke and how engine speed is measured in RPM.

Which section of the engine includes the crankshaft and pistons?

• Rear end

• Front end

• Bottom end

• Top end

Which component is not part of the engine's bottom end?

• Pistons

• Camshaft

• Crankshaft

• Connecting rods

What is the primary function of the engine in a vehicle?

• To propel the vehicle and operate other systems

• To enhance fuel efficiency

• To provide electricity

• To cool the vehicle

What is the term for the highest point a piston reaches in the cylinder?

• Equilibrium point

• Top dead center

• Midpoint

• Bottom dead center

How many piston strokes are required to complete one four-stroke cycle?

• Five

• Four

• Three

• Two

During which stroke is the air-fuel mixture ignited?

• Intake stroke

• Compression stroke

• Power stroke

• Exhaust stroke

What happens during the exhaust stroke of the four-stroke cycle?

• Mixture is compressed

• Air-fuel mixture is drawn in

• Piston moves to top dead center

• Burned gases are expelled

Which stroke involves the piston moving down to create a low-pressure area?

• Intake stroke

• Compression stroke

• Power stroke

• Exhaust stroke

What is the role of the spark plug in a gasoline engine?

• To expel exhaust gases

• To ignite the air-fuel mixture

• To draw in air

• To compress the air-fuel mixture

What does the RPM gauge in a car measure?

• Speed of the car

• Fuel efficiency

• Crankshaft revolutions

• Engine temperature