Variable compression ratio device

A variable compression ratio device configured to be incorporated into an internal combustion engine, the variable compression ratio device comprising:

• rotation coupler assemblies, formed by gears that have internal and external teeth that are disposed at distal ends of a crankshaft of the internal combustion engine to cause the crankshaft to rotate;
• an eccentric actuator configured to cause changes in a relative position of the crankshaft;
• and
• an electronic control unit that is configured to actuate a step motor or servomotor to cause eccentrics of the eccentric actuator to change the relative position of the crankshaft in relation to a top of cylinders of the internal combustion engine to control a compression rate of combustion chambers of the internal combustion engine, wherein a turn of the crankshaft is transferred to a flywheel and a toothed gear via the rotation coupler assemblies belt.

An internal combustion engine comprising:

• one or more cylinders housing pistons that are coupled to a crankshaft;
• and
• variable compression ratio device comprising:
• rotation coupler assemblies formed by gears that have internal and external teeth that are disposed at distal ends of the crankshaft to cause the crankshaft to rotate;
• and
• two or more eccentrics configured to cause translation variations of the crankshaft, wherein:
• the two or more eccentrics are positioned on trunnions of the crankshaft before and after each connecting rod and respective balances;
• the translation variations are to be converted into rotation and transmitted to a toothed gear and to a flange of a flywheel;
• and
• the two or more eccentrics are aligned with corresponding gears to cause changes in translation of a position of the crankshaft in any angle from 0° to 180° responsive to actuation by an electronic control unit that causes a step motor or servomotor to transfer movements of the step motor or the servomotor to a shaft that has a same quantity of intermediate gears as a quantity of the corresponding gears joined to the two or more eccentrics.