Fev Motorentechnik Gmbh & Co Kg

Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft

Werner Bick

Christoph Bollig

Mathias Von Essen

Jurgen Dick

Bernd Jung

Daniel Perak

A four-cylinder, reciprocating piston-machine includes a crankshaft having a rotary axis; a center bearing supporting the crankshaft; two outer bearings flanking the center bearing and supporting the crankshaft; and first, second, third and fourth torsion springs extending parallel to the crankshaft axis. The first and second torsion springs are parallel to and facing a first side of a reference plane containing the crankshaft axis, while the third and fourth torsion springs are parallel to and facing a second side of the reference plane. First, second, third and fourth elongated balancing masses are secured to and extending unidirectionally from respective first, second, third and fourth torsion springs toward the crankshaft in a perpendicular orientation to the crankshaft axis. The first and second balancing masses are situated at the outer bearings, while the third and fourth balancing masses are situated at the center bearing. First, second, third and fourth control cams are keyed to the crankshaft and are in engagement with the respective first, second, third and fourth balancing masses for oscillating the balancing masses toward and away from the crankshaft axis to exert varying torques to the respective torsion springs.

Four-cylinder machine of the reciprocating piston type having balancing

Reciprocating piston engine having a mass-balancing arrangement

A reciprocating piston engine, in particular an internal combustion engine with at least one cylinder in which a piston connected with a crankshaft is driven so it can move back and forth. The crankshaft (1) is connected with at least one cam disk turning with it. The cam disc has a control profile which acts as an actuator on at least one additional unit, in particular a compensating weight.

Reciprocating piston engine with weight compensation

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Wurselen, Germany

Werner Bick