Basic Information

A Linear Combustion Engine project started from a pursuit of more simple and effective combustion-to-electrical energy exchange.

Linear combustion engine hasn't a mechanical shaft, the engine's output is directly in a form of electric power. The principle is based on a direct connection of two opposed pistons without a use of a crank mechanism. The connection rod holds strong magnets moving in a magnetic field of coils and - based on so called Faraday's law - the pistons oscillation is then transformed into an electrical energy. This setup is called a Linear Electrical Engine (or Generator). The principle is similar to the well known "Shake Flash Light".

Nowadays, it's the classical rotary generator (or engine) that is widespread, however if we just "unwound" this generator into a flat design we would get the Linear Combustion Engine (or generator).Therefore it is already a well known design in a way. A similar principle is also used for a well known magnetic train.

Since the engine does not use a crank mechanism the piston rod dead point is not defined. Therefore this concept is also often called a Free Piston Engine.

The project is being developed at the department of Control engineering of the Czech technical university in cooperation with Josef Božek Research center of Engine and Automotive Engineering.