Reciprocating-piston internal combustion engine with mass balancing device

Reciprocating-piston internal combustion engine having at least one engine cylinder and at least one piston oscillating therein, and having at least one balancing mass which is driven in an oscillating manner by a crankshaft via a crank throw and a compensating connecting rod, and which is guided in a straight translatory fashion by means of a linear guide assigned in each case to the respective balancing mass, and a bearing for articulatedly connecting to the compensating connecting rod is disposed on the balancing mass in a middle portion, wherein at least two mutually spaced apart guide elements provided in the form of guide bolts, which constitute the linear guide for guiding the balancing mass along a longitudinal axis of the guide elements in a translatory fashion, and which are oriented parallel with the direction of movement of the piston and fixedly connected to the engine housing and guide bores in the balancing mass, for sliding the balancing mass along the longitudinal axis of the guide bolts in a translatory fashion are provided in the distal end portion of the balancing mass, and the guide elements are positioned at a radial distance on either side of the crankshaft axis and are disposed spaced apart from one another in the axial direction with respect to the crankshaft axis.