## How does a petrol car engine work?
The petrol car engine is a complex piece of machinery, but its basic principles of operation are relatively simple. In this post, we will take a look at the four main strokes of the petrol engine cycle, and how they work together to create power.
The four strokes of the petrol engine cycle
The petrol engine cycle consists of four strokes:
1. Intake stroke
2. Compression stroke
3. Power stroke
4. Exhaust stroke
These four strokes are repeated over and over again, and they are what make the engine run.
The intake stroke
The intake stroke begins with the piston at the top of the cylinder. The intake valve opens, and the piston moves down the cylinder, drawing in a mixture of air and fuel. The intake valve then closes.
The compression stroke
The compression stroke begins with the piston at the bottom of the cylinder. The piston moves up the cylinder, compressing the air-fuel mixture. This compression makes the mixture more combustible.
The power stroke
The power stroke begins with the piston at the top of the cylinder. The spark plug ignites the air-fuel mixture, and the resulting combustion creates a lot of pressure. This pressure pushes the piston down the cylinder, creating power.
The exhaust stroke
The exhaust stroke begins with the piston at the bottom of the cylinder. The exhaust valve opens, and the piston moves up the cylinder, pushing the exhaust gases out of the cylinder. The exhaust valve then closes.
How the four strokes work together
The four strokes of the petrol engine cycle work together to create power. The intake stroke draws in a mixture of air and fuel, the compression stroke compresses the mixture, the power stroke creates power, and the exhaust stroke expels the exhaust gases.
The power created by the engine is used to turn the crankshaft, which in turn drives the wheels of the car.
Conclusion
The petrol car engine is a complex piece of machinery, but its basic principles of operation are relatively simple. The four strokes of the petrol engine cycle work together to create power, which is used to turn the crankshaft and drive the wheels of the car.
