In a new video, YouTuber Integza presents the construction and operation of a homemade engine powered by compressed air. Starting with a simple version, he optimizes the design step by step.
The basic mechanism is a standard crankshaft system. The piston was cut by hand from acrylic tubing and fits snugly into the cylinder. When retracted, a nail on the piston opens a ball valve that regulates the air flow from a compressor. This pushes the piston down, a process that repeats continuously.
Integza says it would be interesting to manufacture the engine entirely by 3D printing. He is testing this, but finds that the printed engine has problems starting up. As a solution, he is experimenting with magnetic sensors and electrovalves. These open when the magnet passes the sensor and let air into the cylinder. This allows the engine to operate even at very low pressure.
Another problem is the need for a lightweight compressed air reservoir. Integza tests a soda bottle and uses CO2 cartridges to maintain pressure. Using an Arduino, he monitors the pressure and refills automatically.
Integza says the design can still be optimized and is asking the community for more suggestions. Currently, you can buy the 3D model in the YouTuber’s store for $10.
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