The 4 Stroke Engine Reinvented!

Andrew Feliks, a Polish sound engineer and ace rallyist has invented a new 4 stroke engine. 

This new concept eliminates the most complicated mechanism in the combustion engine: the head and valve train. The idea is to replace the camshaft with a crankshaft and replace the valves with pistons. By doing this, the inventor, Andrew Feliks, created a new and very simple four stroke engine.

In this invention the piston with compressions rings slides in a cylinder which has a side port. A pair of these pistons and cylinders replaces the intake and exhaust valve.

As the principal crankshaft rotates twice, the timing piston assembly crankshaft turns only once - similar to a camshaft in traditional teaming gear. The set of "pistons valves" doesn't have the disadvantages of traditional valves such as clearance tolerance. The lubrication system is not a problem - it is a normal engine turned "upside-down".

One of the most important advantages of the timing piston assembly is the fact that while the height of the head doesn't change, the intake volume of the engine increases, because the intake volume doesn't depend only on the main piston. The motion of the timing piston assembly increases the volume relationship of intake and exhaust "valve" pistons. This leads to a 20 to 50 percent increase in intake chamber volume.

Another advantage of the timing piston assembly is the absence of valve clearance - there is no adjustment to be made. In conventional engines, this clearance is detrimental because it increases engine operation noise and causes impacts in the timing gear mechanism. Automatic hydraulic systems used for eliminating valve clearance are relatively complex and expensive.

For further read on detailed description and animation visit his website