Engine balancing system

An engine balancing system, comprising:

• an engine body;
• wherein at least two slider-crank mechanisms are provided inside the engine body;
• a first slider-crank mechanism of the at least two slider-crank mechanisms is arranged opposite to a second slider-crank mechanism of the at least two slider-crank mechanisms;
• the first slider-crank mechanism and the second slider-crank mechanism connected via a crank;
• a slider in the first slider-crank mechanism is moved at a speed and an acceleration similar to a speed and an acceleration of a slider in the second slider-crank mechanism;
• a ratio of the speed of the slider in the first slider-crank mechanism to the speed of the slider in the second slider-crank mechanism and a ratio of the acceleration of the slider in the first slider-crank mechanism to the acceleration of the slider in the second slider-crank mechanism are approximately constant;
• wherein each slider-crank mechanism of the at least two slider-crank mechanisms comprises a connecting rod connected to the crank, and a crankshaft connected to the crank is shared between the at least two slider-crank mechanisms;
• a length of the connecting rod of the first slider-crank mechanism is L1, and a length of the crank of the first slider-crank mechanism is e1;
• a length of the connecting rod of the second slider-crank mechanism is L2, and a length of the crank of the second slider-crank mechanism is e2;
• a product of L1 and e2 is K1, and a product of L2 and e1 is K2;
• and
• a ratio of K1 to K2 ranges from 0.8 to 1.2.