How does an engine “suck” in air? Like during the intake stroke it goes down which creates a low pressure area and the air rushes in. But how does all that work? How does the piston going down allow air to be pulled in? LOL please explain it as simple TY!
In: Engineering
Some people call 4-stroke ICEs “suck, squeeze, bang, blow” for this reason. Piston travels “down” (not necessarily down from the perspective of a person standing on the street, but away from the head of the cylinder); the ensuing vacuum draws air into the cylinder. In a carbeurated engine, this also draws fuel into the air stream in the carburetor, while in a fuel injection engine, the fuel injector meters in a precise amount of fuel at a specific time, right into the cylinder.
This is for a naturally aspirated engine. In a turbo or supercharged engine, there is a blower (just a high volume air compressor, really) that forces more air into the cylinder than what would naturally be drawn in (asperated).
Latest Answers