centrifugal pump not shown by the rotating block 2 itself for which only some sealings not shown are required at the speeds of this engine 500 20 000 rpm sufficient pressure is produced for oil water and charging pressure in this manner in an advantageous embodiment of the invention all oil pump parts all water pump parts a large part of the distribution and the vee ropes can be omitted in principle per cylinder block the ignition of the gas mixture takes place at one location only hence only one ignition system is needed per cylinder block as a result of which synchronization problems do not occur also per cylinder block only one gas mixture system carburetor injection system etc and only one inlet and one outlet port are needed because of this too a large part of the distribution of the injectors plug leads etc can be left out in an advantageous embodiment of the invention the pressure pulses in the inlet and outlet pieces are higher frequent which simplifies the noise damping in principle the operation of the ignition mixture formation motor management etc can remain the same as is presently the case in known engines a substantial additional advantage is that the engine according to the invention can be very.