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How Do Pneumatic Valve Return Systems Work

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How Do Pneumatic Valve Return Systems Work
Compressed-air engine

A Compressed-air engine is a pneumatic actuator that creates useful work by expanding compressed air. They have existed in many forms over the past two centuries, ranging in size from hand held turbines up to several hundred horsepower. Some types rely on pistons and cylinders, others use turbines. Many compressed air engines improve their performance by heating the incoming air, or the engine itself. Some took this a stage further and burned fuel in the cylinder or turbine, forming a type of internal combustion engine.

How the Air Car Works
Basics

The pneumatic engines are based on the same mechanical principles as steam engines, with the same characteristics. The only difference is, that instead of using steam, it uses compressed air to generate power.
The engine is made of brand new (and a small percentage of mint condition - like new) original LEGO® parts. The pneumatic elements are modified, to increase engine performance and your enjoyment.
‹ How pneumatic engines work?
Gasoline is already the fuel of the past. It might not seem that way as you fill up on your way to work, but the petroleum used to make it is gradually running out. It also pollutes air that's becoming increasingly unhealthy to breathe, and people no longer want to pay the high prices that oil companies are charging for it. Automobile manufacturers know all of this and have spent lots of time and money to find and develop the fuel of the future.
The search is on, but what will this fuel of the future be? Ready-made fuels like petroleum are becoming more difficult to find and automobile manufacturers are turning to greener energy sources like batteries. These batteries can be charged with energy and placed in a car where that energy can be released. As good as that idea might seem, some manufacturers think air could become an even better energy source.
Air? At first glance, the idea of running a car on air seems almost too good to be true. If we can use

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