Symmetric 4 speed transmission with countershaft power-shift gearbox and input reduction gear set

A system for a multi-ratio gearbox, comprising:

• a first shaft coupled to one or more input speed reduction gear sets;
• a second shaft coupled to a multi-range clutch, wherein the second shaft is coupled to the first shaft via a first input speed reduction gear set of the one or more input speed reduction gear sets;
• a third shaft coupled to a low-speed clutch;
• a fourth shaft coupled to a high-speed clutch;
• a first electric motor coupled to an input side of the first shaft via a rotor shaft, wherein the rotor shaft is positioned vertically below the first shaft and the first shaft does not have any clutches positioned thereon;
• a second electric motor coupled to the input side of the first shaft;
• a charging pump coupled directly to a vertical top of a housing of the multi-ratio gearbox, the charging pump configured to control transmission hydraulic pressures;
• a pump motor coupled to the charging pump, the pump motor coupled to the charging pump on a same side as the first electric motor and the second electric motor relative to the housing;
• and
• a controller with instructions stored in non-transitory memory that are executed by the controller to operate the multi-ratio gearbox with each of the first electric motor and the second electric motor turning in a first forward direction with each of four gear ratios including with:
• (1) the multi-range clutch in a first position, the low-speed clutch engaged, and the high-speed clutch disengaged, (2) the multi-range clutch in a second position, the low-speed clutch engaged, and the high-speed clutch disengaged, (3) the multi-range clutch in the first position, the low-speed clutch disengaged, and the high-speed clutch engaged, and (4) the multi-range clutch in the second position, the low-speed clutch disengaged, and the high-speed clutch engaged,
• wherein the first electric motor and the second electric motor are positioned below the vertical top of the housing.