How does a car engine works on a macro level?


How does a car engine works on a macro level?

In: 0

At the top level, a car’s internal combustion engine typically works by igniting and burning a fuel/air mixture, which pushes a piston down. That piston is connected to a crank shaft; which turns the linear motion into rotational motion. The crankshaft is connected to the transmission, which changes the RPM and distributes it to the wheels. For any specifics, you’ll wanna look at a YouTube video of how an internal combustion engine works.

Hot air takes up more space than cold air (think about how steam expands) so a car engine takes advantage of that by burning gas in a confined space. That hotter air expands and forces a piston to move and create more space. That straight line motion is then converted into a rotational motion to turn the wheels of the car

Air and fuel is burned in a cylinder. Expanding gases from the fuel burning pushes the piston down the cylinder in a reciprocating motion. Rod connecting the piston to the crank shaft turns reciprocating motion into rotating motion.

Car engines work on a 4-stroke cycle:

Intake valve opens, fuel and air is drawn into the cylinder by the motion of the piston moving down in the cylinder.

Intake valve closes, piston pushes up the cylinder and compresses the fuel and air mixture

Spark from spark plug ignites the fuel and air mixture, expanding gasses force the piston back down the cylinder.

Exhaust: Exhaust valve opens, piston moves up the cylinder and pushes exhaust gasses out of the cylinder. Cycle repeats a couple thousand times per minute




the working parts move up inside the pots and SUCK in air/fuel mix

The working parts move down and SQUEEZE the mix in the pots (makes it more explosive)

Spark ignites squeezed mix and BANG

The stink left over from the bang gets BLOWn out


What do you mean by macro level?