Air valve sentence example

Pneumatics is a branch of mechanics that deals with the mechanical properties of gases. It works with the study of pressurized gas that produces mechanical motion, and the application of such gases to produce motion. Systems based on pneumatics are found in factories that deal with compressed air and inert gases. Energy produced by pneumatic systems can be more flexible, less costly, more reliable and less dangerous than some actuators and electric motors.

Despite a lack of technical training, Nikolaus August Otto (1832-1891) had the ingenuity to make the first practical internal combustion engine. He later devised the four-stroke engine, known as the Otto cycle, which was widely used for automobile and other motors.