How Car Engine Works Animation | Car Engine Explained | Engine Animation 4 stroke

Summary

This video explains the workings of a car's internal combustion engine, focusing on the four-stroke process in an inline four-cylinder engine. It covers the four stages—intake, compression, power, and exhaust—detailing how the piston, valves, and spark plug work together to generate power. The engine operates by igniting a compressed air-fuel mixture, causing expansion and thrust to drive the car. The video also highlights the role of camshafts, the compression ratio, and how exhaust gases are expelled, ensuring the cycle repeats to keep the engine running efficiently.

Takeaways

• 😀 A car engine converts heat from combustion gas into mechanical force to turn the wheels.
• 😀 Internal combustion engines work by igniting a compressed air-fuel mixture inside a cylinder, causing it to burn and expand.
• 😀 A four-stroke engine goes through four stages in each cycle: intake, compression, power, and exhaust.
• 😀 In the intake stroke, the piston moves downward and pulls in an air-fuel mixture through the intake valve.
• 😀 The compression stroke involves the piston moving upward to compress the air-fuel mixture, increasing its pressure and temperature.
• 😀 The compression ratio measures how much the air-fuel mixture is compressed, e.g., a 10:1 ratio means it’s reduced to one-tenth its original volume.
• 😀 During the power stroke, a spark plug ignites the compressed air-fuel mixture, causing it to burn and push the piston downward.
• 😀 The power generated in the power stroke is transmitted to the wheels via the transmission and driveshaft.
• 😀 In the exhaust stroke, the exhaust valve opens, and the piston pushes the exhaust gases out of the cylinder.
• 😀 The four-stroke cycle repeats continuously to keep the engine running and producing power.

Q & A

What is the primary function of a car engine?

The primary function of a car engine is to convert heat from combustion gases into mechanical force that turns the wheels and drives the car.

What is an internal combustion engine?

An internal combustion engine is a type of engine that generates power by igniting a compressed air-fuel mixture inside a sealed cylinder, causing it to burn rapidly and expand to provide energy.

What are the main strokes involved in a four-stroke engine cycle?

A four-stroke engine cycle consists of four main strokes: the intake stroke, compression stroke, power stroke, and exhaust stroke.

How does the intake stroke work in a four-stroke engine?

During the intake stroke, the piston moves downward, and the intake valve opens, allowing the air-fuel mixture to enter the cylinder. The exhaust valve remains closed, and the movement of the piston creates a vacuum that pulls the mixture into the cylinder.

What is the role of the camshaft in the four-stroke engine cycle?

The camshaft controls the timing of the intake and exhaust valves, ensuring that they open and close at the correct moments in each stroke of the engine cycle.

What happens during the compression stroke?

During the compression stroke, the piston moves upward, both the intake and exhaust valves are closed, and the air-fuel mixture is compressed. This increases the pressure and temperature of the mixture.

What does the compression ratio of an engine refer to?

The compression ratio refers to the difference between the volume of the air-fuel mixture in the cylinder during the intake stroke and the volume when it is fully compressed. For example, a 10:1 compression ratio means the mixture is reduced to one-tenth of its original volume.

How does the power stroke generate energy in the engine?

In the power stroke, a spark from the spark plug ignites the compressed air-fuel mixture, causing it to burn and expand rapidly. This pushes the piston downward, generating mechanical energy that drives the car's wheels.

What happens during the exhaust stroke?

During the exhaust stroke, the exhaust valve opens while the intake valve stays closed. The piston moves upward, expelling the burned gases (exhaust) from the cylinder.

How does the four-stroke cycle repeat after the exhaust stroke?

After the exhaust stroke, the cycle starts again with the intake stroke. This continuous process keeps the engine running, generating power to drive the vehicle.