Mechanical engineering project - Compressed air car also called pneumatic vehicle 

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A pneumatic vehicle was created as a mechanical engineering project. It consists of several parts: a red gas cylinder with a valve and gauge, a 12-volt battery, two dual-acting piston cylinders, blue pipelines, solenoid valves, and a free wheel with a chain, similar to a bicycle.
-The red gas cylinder stores compressed atmospheric air.
-The blue pipelines transport air between components.
-Solenoid valves control air flow; there's one input valve and two output valves.
-The battery powers the solenoid valve.
-Dual-acting piston cylinders convert air pressure into mechanical power.
-The free wheel with a chain transforms the back-and-forth piston motion into continuous spinning.
The vehicle operates by utilizing the compressed air stored in the gas cylinder as its energy source. The blue pipes carry this compressed air to the solenoid valve. The solenoid valve controls the airflow and guides it alternately to the dual-acting piston cylinders. This controlled airflow causes the piston cylinders to move back and forth, generating a reciprocating motion.
Finally, this reciprocating motion is converted into a continuous spinning motion with the assistance of the free wheel and chain mechanism, similar to how a bicycle's motion is transferred from pedaling to the wheels. This entire process enables the vehicle to move forward or perform other desired actions, depending on its design and application.