Continuously variable hydro-mechanical transmission

A hydro-mechanical transmission includes at least:

• a body;
• an input shaft supported for rotation relative said body around a first axis of rotation;
• an output shaft supported for rotation relative said body around a second axis of rotation;
• a hydrodynamic torque converter having at least a turbine rotor, a pump rotor, and a stator secured against rotation relative the body;
• and an eccentric gear set;
• wherein the eccentric gear set includes at least a first main gear, a planet gear, a first main eccentric, and a first auxiliary eccentric;
• wherein the planet gear has at least first toothed wreath meshing with the first main gear;
• wherein the first main eccentric has a first eccentricity;
• wherein the first auxiliary eccentric has a second eccentricity;
• wherein the first main gear has a first number of teeth having a first normal module, and the first toothed wreath of the planet gear has a second number of teeth having the first normal module;
• wherein the first eccentricity of the first main eccentric expressed in units of the normal module of teeth of the first main gear and the planet gear equals half the absolute value of the difference between the number of teeth of the first main gear and the number of teeth of the first toothed wreath of the planet gear;
• wherein the first main eccentric is supported for rotation relative the body around a third axis of rotation;
• wherein the first main eccentric keeps the first main gear and the first toothed wreath of the planet gear in permanent meshing;
• wherein the first auxiliary eccentric is supported for rotation relative the body around the third axis of rotation;
• wherein the intermediate shaft is supported for rotation in the main eccentric and the first auxiliary eccentric so that it is free to rotate relative the main eccentric and the first auxiliary eccentric around a fourth axis of rotation, and the fourth axis of rotation is free to rotate relative the third axis of rotation;
• wherein the input shaft is connected with the turbine rotor so that the input shaft and the turbine rotor both rotate in unison relative the body.