Abstract: The invention relates to a method for absorbing the vibration of a five-piston engine and to a vibration-absorbed five-piston engine. At least two separate piston units are synchronized to operate in a counter action such that a certain position of one piston unit actuates forcibly and simultaneously the operation of fuel pumps and injection nozzles intended for the two piston units. Operation of the fuel pumps can be effected mechanically by means of the actions of the piston unit.

Abstract: A power aggregate comprising a two-stroke engine, a piston rigidly linked together by means of a piston rod, a plurality of pump cylinders circumferentially mounted around the piston rod and a corresponding number of pump pistons fixed to the piston rod through the intermediary of radial rods or a flange, for reciprocation within the pump cylinders. Each pump cylinder is provided with hydraulic fluid intake and pressure ducts, and at least two of the pump cylinders have different diameters. The hydraulic duct of one or several pump cylinders operates its own hydraulic motor or actuator cylinder.