Reciprocating piston-internal combustion engine i.e. one-cylinder reciprocating piston-internal combustion engine, has balancing shaft, where distance of axis of shaft to axis of crankshaft is in determined relation to offset of crank drive

摘要

The engine has a balancing shaft (3) driven by a crankshaft (2) with a same rotational speed in an opposite direction. A distance (d1) of a rotational axis of the balancing shaft to a rotational axis of the crankshaft is in determined relation to an offset (a) of a crank drive (1). Rotational gravitational force effect of the balancing shaft is equal or unequal to rotational free gravitational force of the crank drive. An imbalance mass (1') produces rotating mass force. Maximum mass torque caused by the offset is calculated relative to the rotational axis of the crank shaft.