Technical Advantages compared with conventional four cycle engines
No valves, no valve train, no camshaft
Substancial reduction of mechanical noises
No limits of engine revolutions caused by valve operation
Reduction in engine height and engine compartment dimensions
The cylinder block and cylinder head can be manufactured in a single place
Reduction of the number of parts required for the creation of the fuel-/air mixture and for the ignition in Otto engines
Half the number of injection nozzles and pump parts in Diesel engines
Reduction in friction due to elimination of the valve system
Reduction in vacuum performance at lower rpm
Improved creation of fuel-/air mixture at lower rpm caused by higher flush pressure and higher optimised velocity of introduction of the mixture into the combustion chamber
Greater thermal efficiency by half the number of combustion cylinders for a given kilowatt output
Higher thermal efficiency caused by higher compression
Optimal design of the combustion chambers due to:
The relation of surface area to volume
Squeeze flowing in the TDC of the chamber caused
by an uninterrupted circular form of the squeeze area
Shorter flame path
Constant temperatures in the combustion chambers due to the abscence of very hot exhaust valves
Higher heat density in the exhaust channel due to the greater ignition frequency. For high performance engines, if a catalytic converter is required, its operation occurs earlier
